Optical fiber communications john m senior

1971, with permission from The Optical Society of America; Figure 2.30 from Fiber manufacture at AT&T with the MCVD process in Journal of Lightwave Technology, LT-48, pp.. 1978, © IEEE 1

Optical Fiber Communications Principles and Practice

This highly successful book, now in its third edition, has been extensively updated to include

both new developments and improvements to technology and their utilization within the optical

fiber global communications network

The third edition, which contains an additional chapter and many new sections, is now structured

into 15 chapters to facilitate a logical progression of the material, to enable both straightforward

access to topics and provide an appropriate background and theoretical support

Key features

• An entirely new chapter on optical networks, incorporating wavelength routing and

optical switching networks

• A restructured chapter providing new material on optical amplifier technology,

wavelength conversion and regeneration, and another focusing entirely on integrated

optics and photonics

• Many areas have been updated, including: low water peak and high performance

single-mode fibers, photonic crystal fibers, coherent and particularly phase-modulated

systems, and optical networking techniques

• Inclusion of relevant up-to-date standardization developments

• Mathematical fundamentals where appropriate

• Increased number of worked examples, problems and new references

This new edition remains an extremely comprehensive introductory text with a practical

orientation for undergraduate and postgraduate engineers and scientists It provides excellent

coverage of all aspects of the technology and encompasses the new developments in the field

Hence it continues to be of substantial benefit and assistance for practising engineers,

technologists and scientists who need access to a wide-ranging and up-to-date reference

to this continually expanding field

Professor John Senior is Pro Vice-Chancellor for Research and Dean of the Faculty of

Engineering and Information Sciences at the University of Hertfordshire, UK This third edition

of the book draws on his extensive experience of both teaching and research in this area

Third Edition

Optical Fiber Communications

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Optical Fiber Communications

Principles and Practice

Third edition

John M Senior

assisted by

M Yousif Jamro

Pearson Education Limited

Edinburgh Gate

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Essex CM20 2JE

England

and Associated Companies throughout the world

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First published 1985

Second edition 1992

Third edition published 2009

© Prentice Hall Europe 1985, 1992

© Pearson Education Limited 2009

The right of John M Senior to be identified as author of this work has

been asserted by him in accordance with the Copyright, Designs and Patents Act 1988.

All rights reserved No part of this publication may be reproduced, stored in a retrieval

system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording or otherwise, without either the prior written permission of the publisher or a licence permitting restricted copying in the United Kingdom issued by the Copyright

Licensing Agency Ltd, Saffron House, 6–10 Kirby Street, London EC1N 8TS.

All trademarks used herein are the property of their respective owners The use of any

trademark in this text does not vest in the author or publisher any trademark ownership rights in such trademarks, nor does the use of such trademarks imply any affiliation with

or endorsement of this book by such owners.

ISBN: 978-0-13-032681-2

British Library Cataloguing-in-Publication Data

A catalogue record for this book is available from the British Library

Library of Congress Cataloging-in-Publication Data

Senior, John M., 1951–

Optical fiber communications : principles and practice / John M Senior, assisted by

M Yousif Jamro — 3rd ed.

p cm.

Includes bibliographical references and index.

ISBN-13: 978-0-13-032681-2 (alk paper) 1 Optical communications 2 Fiber optics.

I Jamro, M Yousif II Title.

Printed and bound by Ashford Colour Press Ltd, Gosport

The publisher’s policy is to use paper manufactured from sustainable forests.

To Judy and my mother Joan, and in memory of my father Ken

www.elsolucionario.org

1.3 Advantages of optical fiber communication 7

2.3.4 Phase shift with total internal reflection and the

2.5.2 Mode-field diameter and spot size 60

2.5.4 Group delay and mode delay factor 64

4.4.4 Plasma-activated chemical vapor deposition

4.4.5 Summary of vapor-phase deposition

4.7 Stability of the fiber transmission characteristics 199

4.8.3 Cable sheath, water barrier and cable core 206

Chapter 5: Optical fiber connections: joints,

6.2.4 Optical feedback and laser oscillation 303 6.2.5 Threshold condition for laser oscillation 307

6.3 Optical emission from semiconductors 309

6.6.3 Vertical cavity surface-emitting lasers 347

6.7.1 Threshold current temperature dependence 350

6.10 Narrow-linewidth and wavelength-tunable lasers 369

Chapter 7: Optical sources 2: the light-emitting diode 396

8.8.3 Speed of response and traveling-wave photodiodes 462

www.elsolucionario.org

8.9 Semiconductor photodiodes with internal gain 470

8.9.2 Silicon reach through avalanche photodiodes 472

8.9.5 Benefits and drawbacks with the avalanche photodiode 480

9.4.2 High-impedance (integrating) front-end 526

Chapter 10: Optical amplification, wavelength

10.4.2 Raman and Brillouin fiber amplifiers 571 10.4.3 Waveguide amplifiers and fiber amplets 575

10.5.1 Cross-gain modulation wavelength converter 584 10.5.2 Cross-phase modulation wavelength converter 586 10.5.3 Cross-absorption modulation wavelength converters 592

11.4.1 Beam splitters, directional couplers and switches 616

11.4.3 Periodic structures for filters and injection lasers 627 11.4.4 Polarization transformers and wavelength converters 634

Chapter 12: Optical fiber systems 1: intensity

12.6.1 The optoelectronic regenerative repeater 708 12.6.2 The optical transmitter and modulation formats 711

12.6.7 Line coding and forward error correction 734

12.7.4 Subcarrier double-sideband modulation (DSB–IM) 752 12.7.5 Subcarrier frequency modulation (FM–IM) 754

12.9.3 Orthogonal frequency division multiplexing 768

12.10 Application of optical amplifiers 778

13.4 Practical constraints of coherent transmission 835

13.4.4 Transmission medium limitations 843

13.6.6 Polarization diversity reception and polarization

xvi Contents

14.4 Fiber refractive index profile measurements 926

15.2.2 Optical network node and switching elements 974 15.2.3 Wavelength division multiplexed networks 976 15.2.4 Public telecommunications network overview 978

15.3 Optical network transmission modes, layers and protocols 979

15.3.3 Open Systems Interconnection reference model 985

representative or visit www.pearsoned.co.uk/senior-optical

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The preface to the second edition drew attention to the relentless onslaught in the ment of optical fiber communications technology identified in the first edition in the context of the 1980s Indeed, although optical fiber communications could now, nearlytwo decades after that period finished, be defined as mature, this statement fails to signalthe continuing rapid and extensive developments that have subsequently taken place.Furthermore the pace of innovation and deployment fuelled, in particular, by the Internet

develop-is set to continue with developments in the next decade likely to match or even exceedthose which have occurred in the last decade Hence this third edition seeks to record andexplain the improvements in both the technology and its utilization within what is largely

an optical fiber global communications network

Major advances which have occurred while the second edition has been in print include:those associated with low-water-peak and high-performance single-mode fibers; thedevelopment of photonic crystal fibers; a new generation of multimode graded index plasticoptical fibers; quantum-dot fabrication for optical sources and detectors; improvements inoptical amplifier technology and, in particular, all-optical regeneration; the realization ofphotonic integrated circuits to provide ultrafast optical signal processing together with silicon photonics; developments in digital signal processing to mitigate fiber transmissionimpairments and the application of forward error correction strategies In addition, therehave been substantial enhancements in transmission and multiplexing techniques such asthe use of duobinary-encoded transmission, orthogonal frequency division multiplexingand coarse/dense wavelength division multiplexing, while, more recently, there has been aresurgence of activity concerned with coherent and, especially, phase-modulated transmis-sion Finally, optical networking techniques and optical networks have become establishedemploying both specific reference models for the optical transport network together withdevelopments originating from local area networks based on Ethernet to provide for thefuture optical Internet (i.e 100 Gigabit Ethernet for carrier-class transport networks).Moreover, driven by similar broadband considerations, activity has significantly increased

in relation to optical fiber solutions for the telecommunication access network

Although a long period has elapsed since the publication of the second edition in 1992,

it has continued to be used extensively in both academia and industry Furthermore, asdelays associated with my ability to devote the necessary time to writing the updates forthis edition became apparent, it has been most gratifying that interest from the extensiveuser community of the second edition has encouraged me to find ways to pursue the neces-sary revision and enhancement of the book A major strategy to enable this process has beenthe support provided by my former student and now colleague, Dr M Yousif Jamro, workingwith me, undertaking primary literature searches and producing update drafts for manychapters which formed the first stage of the development for the new edition An extensiveseries of iterations, modifications and further additions then ensued to craft the final text

In common with the other editions, this edition relies upon source material from thenumerous research and other publications in the field including, most recently, theProceedings of the 33rd European Conference on Optical Communications (ECOC’07)which took place in Berlin, Germany, in September 2007 Furthermore, it also draws uponthe research activities of the research group focused on optical systems and networks that

I established at the University of Hertfordshire when I took up the post as Dean of Faculty

in 1998, having moved from Manchester Metropolitan University Although the bookremains a comprehensive introductory text for use by both undergraduate and post-graduate engineers and scientists to provide them with a firm grounding in all significantaspects of the technology, it now also encompasses a substantial chapter devoted to opticalnetworks and networking concepts as this area, in totality, constitutes the most importantand extensive range of developments in the field to have taken place since the publication

of the second edition

In keeping with a substantial revision and updating of the content, then, the practicalnature of the coverage combined with the inclusion of the relevant up-to-date standardiza-tion developments has been retained to ensure that this third edition can continue to bewidely employed as a reference text for practicing engineers and scientists Followingvery positive feedback from reviewers in relation to its primary intended use as a teaching/learning text, the number of worked examples interspersed throughout the book has beenincreased to over 120, while a total of 372 problems are now provided at the end of relev-ant chapters to enable testing of the reader’s understanding and to assist tutorial work.Furthermore, in a number of cases they are designed to extend the learning experiencefacilitated by the book Answers to the numerical problems are provided at the end of therelevant sections in the book and the full solutions can be accessed on the publisher’s web-site using an appropriate password

Although the third edition has grown into a larger book, its status as an introductorytext ensures that the fundamentals are included where necessary, while there has been noattempt to cover the entire field in full mathematical rigor Selected proofs are developed,however, in important areas throughout the text It is assumed that the reader is conversantwith differential and integral calculus and differential equations In addition, the readerwill find it useful to have a grounding in optics as well as a reasonable familiarity with thefundamentals of solid-state physics

This third edition is structured into 15 chapters to facilitate a logical progression ofmaterial and to enable straightforward access to topics by providing the appropriate back-ground and theoretical support Chapter 1 gives a short introduction to optical fiber com-munications by considering the historical development, the general system and the majoradvantages provided by this technology In Chapter 2 the concept of the optical fiber as atransmission medium is introduced using the simple ray theory approach This is followed

by discussion of electromagnetic wave theory applied to optical fibers prior to tion of lightwave transmission within the various fiber types In particular, single-modefiber, together with a more recent class of microstructured optical fiber, referred to as photonic crystal fiber, are covered in further detail The major transmission characteristics

considera-of optical fibers are then dealt with in Chapter 3 Again there is a specific focus on theproperties and characteristics of single-mode fibers including, in this third edition, enhanceddiscussion of single-mode fiber types, polarization mode dispersion, nonlinear effects and,

in particular, soliton propagation

Chapters 4 and 5 deal with the more practical aspects of optical fiber communicationsand therefore could be omitted from an initial teaching program A number of these areas,however, are of crucial importance and thus should not be lightly overlooked Chapter 4deals with the manufacturing and cabling of the various fiber types, while in Chapter 5 thedifferent techniques to provide optical fiber connection are described In this latter chapterboth fiber-to-fiber joints (i.e connectors and splices) are discussed as well as fiber branch-ing devices, or couplers, which provide versatility within the configuration of optical fibersystems and networks Furthermore, a new section incorporating coverage of optical isola-tors and circulators which are utilized for the manipulation of signals within optical net-works has been included.

Chapters 6 and 7 describe the light sources employed in optical fiber communications

In Chapter 6 the fundamental physical principles of photoemission and laser action arediscussed prior to consideration of the various types of semiconductor and nonsemi-conductor laser currently in use, or under investigation, for optical fiber communications.The other important semiconductor optical source, namely the light-emitting diode, isdealt with in Chapter 7

The next two chapters are devoted to the detection of the optical signal and the fication of the electrical signal obtained Chapter 8 discusses the basic principles of opticaldetection in semiconductors; this is followed by a description of the various types of photodetector currently employed The optical fiber direct detection receiver is then con-sidered in Chapter 9, with particular emphasis on its performance characteristics

ampli-Enhanced coverage of optical amplifiers and amplification is provided in Chapter 10,which also incorporates major new sections concerned with wavelength conversion pro-cesses and optical regeneration Both of these areas are of key importance for current andfuture global optical networks Chapter 11 then focuses on the fundamentals and ongoingdevelopments in integrated optics and photonics providing descriptions of device techno-logy, optoelectronic integration and photonic integrated circuits In addition, the chapterincludes a discussion of optical bistability and digital optics which leads into an overview

of optical computation

Chapter 12 draws together the preceding material in a detailed discussion of the majorcurrent implementations of optical fiber communication systems (i.e those using intensitymodulation and the direct detection process) in order to give an insight into the design criteria and practices for all the main aspects of both digital and analog fiber systems Twonew sections have been incorporated into this third edition dealing with the crucial topic

of dispersion management and describing the research activities into the performanceattributes and realization of optical soliton systems

Over the initial period since the publication of the second edition, research interest andactivities concerned with coherent optical fiber communications ceased as a result of theimproved performance which could be achieved using optical amplification with conven-tional intensity modulation–direct detection optical fiber systems Hence no significantprogress in this area was made for around a decade until a renewed focus on coherent optical systems was initiated in 2002 following experimental demonstrations using phase-modulated transmission Coherent and phase-modulated optical systems are thereforedealt with in some detail in Chapter 13 which covers both the fundamentals and the initialperiod of research and development associated with coherent transmission prior to 1992,together with the important recent experimental system and field trial demonstrations

primarily focused on phase-modulated transmission that have taken place since 2002 Inparticular a major new section describing differential phase shift keying systems togetherwith new sections on polarization multiplexing and high-capacity transmission have beenincorporated into this third edition.

Chapter 14 provides a general treatment of the major measurements which may beundertaken on optical fibers in both the laboratory and the field The chapter is incorpor-ated at this stage in the book to enable the reader to obtain a more complete understanding

of optical fiber subsystems and systems prior to consideration of these issues It continues toinclude the measurements required to be taken on single-mode fibers and it addresses themeasurement techniques which have been adopted as national and international standards.Finally, Chapter 15 on optical networks comprises an almost entirely new chapter forthe third edition which provides both a detailed overview of this expanding field and a dis-cussion of all the major aspects and technological solutions currently being explored Inparticular, important implementations of wavelength routing and optical switching net-works are described prior to consideration of the various optical network deployments thathave occurred or are under active investigation The chapter finishes with a section whichaddresses optical network protection and survivability

The book is also referenced throughout to extensive end-of-chapter references whichprovide a guide for further reading and also indicate a source for those equations that havebeen quoted without derivation A complete list of symbols, together with a list of com-mon abbreviations in the text, is also provided SI units are used throughout the book

I must extend my gratitude for the many useful comments and suggestions provided bythe diligent reviewers that have both encouraged and stimulated improvements to the text.Many thanks are also given to the authors of the multitude of journal and conferencepapers, articles and books that have been consulted and referenced in the preparation ofthis third edition and especially to those authors, publishers and companies who havekindly granted permission for the reproduction of diagrams and photographs I would alsolike to thank the many readers of the second edition for their constructive and courteousfeedback which has enabled me to make the substantial improvements that now comprisethis third edition Furthermore, I remain extremely grateful to my family and friends whohave continued to be supportive and express interest over the long period of the revisionfor this edition of the book In particular, my very special thanks go to Judy for her con-tinued patience and unwavering support which enabled me to finally complete the task,albeit at the expense of evenings and weekends which could have been spent more fre-quently together

John M Senior

We are grateful to the following for permission to reproduce copyright material:

Figures 2.17 and 2.18 from Weakly guiding fibers in Applied Optics, 10, p 2552, OSA

(Gloge, D 1971), with permission from The Optical Society of America; Figure 2.30 from

Fiber manufacture at AT&T with the MCVD process in Journal of Lightwave Technology,

LT-4(8), pp 1016–1019, OSA (Jablonowski, D P 1986), with permission from TheOptical Society of America; Figure 2.35 from Gaussian approximation of the fundamental

modes of graded-index fibers in Journal of the Optical Society of America, 68, p 103,

OSA (Marcuse, D 1978), with permission from The Optical Society of America; Figure

2.36 from Applied Optics, 19, p 3151, OSA (Matsumura, H and Suganuma, T 1980),

with permission from The Optical Society of America; Figures 3.1 and 3.3 from Ultimate

low-loss single-mode fibre at 1.55 mum in Electronic Letters, 15(4), pp 106–108,

Institution of Engineering and Technology (T Miya, T., Teramuna, Y., Hosaka, Y and

Miyashita, T 1979), with permission from IET; Figure 3.2 from Applied Physics Letters,

22, 307, Copyright 1973, American Institute of Physics (Keck, D B., Maurer, R D and

Schultz, P C 1973), reproduced with permission; Figure 3.10 from Electronic Letters, 11,

p 176, Institution of Engineering and Technology (Payne, D N and Gambling, W A

1975), with permission from IET; Figures 3.15 and 3.17 from The Radio and Electronic Engineer, 51, p 313, Institution of Engineering and Technology (Gambling, W A.,

Hartog, A H and Ragdale, C M 1981), with permission from IET; Figure 3.18 fromHigh-speed optical pulse transmission at 1.29 mum wavelength using low-loss single-

mode fibers in IEEE Journal of Quantum Electronics, QE-14, p 791, IEEE (Yamada, J I.,

Saruwatari, M., Asatani, K., Tsuchiya, H., Kawana, A., Sugiyama, K and Kumara, T 1978),

© IEEE 1978, reproduced with permission; Figure 3.30 from Polarization-maintaining

fibers and their applications in Journal of Lightwave Technology, LT-4(8), pp 1071–1089,

OSA (Noda, J., Okamoto, K and Susaki, Y 1986), with permission from The Optical

Society of America; Figure 3.34 from Nonlinear phenomena in optical fibers in IEEE Communications Magazine, 26, p 36, IEEE (Tomlinson, W J and Stolen, R H 1988), ©

IEEE 1988, reproduced with permission; Figures 4.1 and 4.4 from Preparation of sodium

borosilicate glass fibers for optical communication in Proceedings of IEE, 123, pp 591–

595, Institution of Engineering and Technology (Beales, K J., Day, C R., Duncan, W J.,Midwinter, J E and Newns, G R 1976), with permission from IET; Figure 4.5 from A

review of glass fibers for optical communications in Phys Chem Glasses, 21(1), p 5,

Society of Glass Technology (Beales, K J and Day, C R 1980), reproduced with

per-mission; Figure 4.7 Reprinted from Optics Communication, 25, pp 43–48, D B Keck

and R Bouilile, Measurements on high-bandwidth optical waveguides, copyright 1978,with permission from Elsevier; Figure 4.8 from Low-OH-content optical fiber fabricated

by vapor-phase axial-deposition method in Electronic Letters, 14(17), pp 534–535,

Institution of Engineering and Technology (Sudo, S., Kawachi, M., Edahiro, M., Izawa,T., Shoida, T and Gotoh, H 1978), with permission from IET; Figure 4.20 from Optical

fibre cables in Radio and Electronic Engineer (IERE J.), 51(7/8), p 327, Institution of

Engineering and Technology (Reeve, M H 1981), with permission from IET; Figure 4.21from Power loss, modal noise and distortion due to microbending of optical fibres in

Applied Optics, 24, pp 2323, OSA ( Das, S., Englefield, C G and Goud, P A 1985), with

permission from The Optical Society of America; Figure 4.22 from Hydrogen inducedloss in MCVD fibers, Optical Fiber Communication Conference, OFC 1985, USA, TUII,February 1985, OFC/NFOEC (Lemaire, P J and Tomita, A 1985), with permission fromThe Optical Society of America; Figures 5.2 (a) and 5.16 (a) from Connectors for optical

fibre systems in Radio and Electronic Engineer (J IERE), 51(7/8), p 333, Institution of

Engineering and Technology (Mossman, P 1981), with permission from IET; Figure 5.5

(b) from Jointing loss in single-loss fibres in Electronic Letters, 14(3), pp 54–55,

Institution of Engineering and Technology (Gambling, W A., Matsumura, H and Cowley,

A G 1978), with permission from IET; Figure 5.7 (a) from Figure 1, page 1, Optical

Fiber Arc Fusion Splicer FSM-45F, No.: B- 06F0013Cm, 13 February 2007, http://

www.fujikura.co.jp/00/splicer/front-page/pdf/e_fsm-45f.pdf; with permission fromFujikura Limited; Figure 5.7 (b) from Figure 4, page 1, Arc Fusion Splicer, SpliceMate,

SpliceMate Brochure, http://www.fujikura.co.jp/00/splicer/front-page/pdf/splicemate_

brochure.pdf, with permission from Fujikura Limited; Figure 5.8 (a) from Optical

commun-ications research and technology in Proceedings of the IEEE, 66(7), pp 744–780, IEEE

(Giallorenzi, T G 1978), © IEEE 1978, reproduced with permission; Figure 5.13 from

Simple high-performance mechanical splice for single mode fibers in Proceedings of the

Optical Fiber Communication Conference, OFC 1985, USA, paper M12, OFC/NFOEC

(Miller, C M., DeVeau, G F and Smith, M Y 1985), with permission from The OpticalSociety of America; Figure 5.15 from Rapid ribbon splice for multimode fiber splicing in

Proceedings of the Optical Fiber Communication Conference, OFC1985, USA, paper

TUQ27, OFC/NFOEC (Hardwick, N E and Davies, S T 1985), with permission fromThe Optical Society of America; Figure 5.21 (a) from Demountable multiple connector

with precise V-grooved silicon in Electronic Letters, 15(14), pp 424–425, Institution of

Engineering and Technology (Fujii, Y., Minowa, J and Suzuki, N 1979), with permission

from IET; Figure 5.21 (b) from Very small single-mode ten-fiber connector in Journal of

Lightwave Technology, 6(2), pp 269–272, OSA (Sakake, T., Kashima, N and Oki, M.

1988), with permission from The Optical Society of America; Figure 5.20 from coupling-efficiency optical interconnection using a 90-degree bent fiber array connector

High-in optical prHigh-inted circuit boards High-in IEEE Photonics Technology Letters, 17(3), pp 690–

692, IEEE (Cho, M H., Hwang, S H., Cho, H S and Park, H H 2005), © IEEE 2005,reproduced with permission; Figure 5.22 (a) from Practical low-loss lens connector for

optical fibers in Electronic Letters, 14(16), pp 511–512, Institution of Engineering and

Technology (Nicia, A 1978), with permission from IET; Figure 5.23 from Assembly

technology for multi-fiber optical connectivity solutions in Proceedings of IEEE/LEOS

Workshop on Fibres and Optical Passive Components, 22–24 June 2005, Mondello, Italy,

IEEE (Bauknecht, R Kunde, J., Krahenbuhl, R., Grossman, S and Bosshard, C 2005),

© IEEE 2005, reproduced with permission; Figure 5.31 from Polarization-independentoptical circulator consisting of two fiber-optic polarizing beamsplitters and two YIG

spherical lenses in Electronic Letters, 22, pp 370–372, Institution of Engineering and

www.elsolucionario.org

Technology (Yokohama, I., Okamoto, K and Noda, J 1985), with permission from IET;Figures 5.36 and 5.38 (a) from Optical demultiplexer using a silicon echette grating in

IEEE Journal of Quantum Electronics, QE-16, pp 165–169, IEEE (Fujii, Y., Aoyama,

K and Minowa, J 1980), © IEEE 1980, reproduced with permission; Figure 5.44 from Filterless ‘add’ multiplexer based on novel complex gratings assisted coupler in

IEEE Photonics Technology Letters, 17(7), pp 1450–1452, IEEE (Greenberg, M and

Orenstein, M 2005), © IEEE 2005, reproduced with permission; Figure 6.33 from Lowthreshold operation of 1.5μm DFB laser diodes in Journal of Lightwave Technology,

LT-5, p 822, IEEE (Tsuji, S., Ohishi, A., Nakamura, H., Hirao, M., Chinone, N andMatsumura, H 1987), © IEEE 1987, reproduced with permission; Figure 6.37 adapted

from Vertical-Cavity Surface-Emitting Lasers: Design, Fabrication, Characterization,

and Applications, Cambridge University Press (Wilmsen, C W., Temkin, H and

Coldren, L A 2001), reproduced with permission; Figure 6.38 from Semiconductor

laser sources for optical communication in Radio and Electronic Engineer, 51, p 362,

Institution of Engineering and Technology (Kirby, P A 1981), with permission from IET;Figure 6.47 from Optical amplification in an erbium-doped fluorozirconate fibre between

1480 nm and 1600 nm in IEE Conference Publication 292, Pt 1, p 66, Institution of

Engineering and Technology (Millar, C A., Brierley, M C and France, P W 1988), withpermission from IET; Figure 6.48 (a) from High efficiency Nd-doped fibre lasers using

direct-coated dielectric mirrors in Electronic Letters, 23, p 768, Institution of Engineering

and Technology (Shimtzu, M., Suda, H and Horiguchi, M 1987), with permission from

IET; Figure 6.48 (b) from Rare-earth-doped fibre lasers and amplifiers in IEE Conference

Publication, 292 Pt 1, p 49, Institution of Engineering and Technology (Payne, D N

and Reekie, L 1988), with permission from IET; Figure 6.53 from Wavelength-tunable and single-frequency semiconductor lasers for photonic communications networks in

IEEE Communications Magazine, October, p 42, IEEE (Lee, T P and Zah, C E 1989),

© IEEE 1989, reproduced with permission; Figure 6.55 from Single longitudinal-mode

operation on an Nd3+-doped fibre laser in Electronic Letters, 24, pp 24–26, IEEE

(Jauncey, I M., Reekie, L., Townsend, K E and Payne, D N 1988), © IEEE 1988,

reproduced with permission; Figure 6.56 from Tunable single-mode fiber lasers in Journal

of Lightwave Technology, LT-4, p 956, IEEE (Reekie, L., Mears, R J., Poole, S B and

Payne, D N 1986), © IEEE 1986, reproduced with permission; Figure 6.58 reprinted

from Semiconductors and Semimetals: Lightwave communication technology, 22C,

Y Horikoshi, ‘Semiconductor lasers with wavelengths exceeding 2μm’, pp 93–151,

1985, edited by W T Tsang (volume editor), copyright 1985, with permission fromElsevier; Figure 6.59 from PbEuTe lasers with 4–6μm wavelength mode with hot-well

epitaxy in IEEE Journal of Quantum Electronics, 25(6), pp 1381–1384, IEEE (Ebe, H.,

Nishijima, Y and Shinohara, K 1989), © IEEE 1989, reproduced with permission; Figure

7.5 reprinted from Optical Communications, 4, C A Burrus and B I Miller, Small-area

double heterostructure aluminum-gallium arsenide electroluminsecent diode sources foroptical fiber transmission lines, pp 307–369, 1971, copyright 1971, with permission fromElsevier; Figure 7.6 from High-power single-mode optical-fiber coupling to InGaAsP

Institution of Engineering and Technology (Uji, T and Hayashi, J 1985), with permissionfrom IET; Figure 7.8 from Sources and detectors for optical fiber communications appli-

cations: the first 20 years in IEE Proceedings on Optoelectronics, 133(3), pp 213–228,

Institution of Engineering and Technology (Newman, D H and Ritchie, S 1986), withpermission from IET; Figure 7.9 (a) from 2 Gbit/s and 600 Mbit/s single-mode fibre-transmission experiments using a high-speed Zn-doped 1.3μm edge-emitting LED in

Electronic Letters, 13(12), pp 636–637, Institution of Engineering and Technology

(Fujita, S., Hayashi, J., Isoda, Y., Uji, T and Shikada, M 1987), with permission fromIET; Figure 7.9 (b) from Gigabit single-mode fiber transmission using 1.3μm edge-

emitting LEDs for broadband subscriber loops in Journal of Lightwave Technology,

LT-5(10) pp 1534–1541, OSA (Ohtsuka, T., Fujimoto, N., Yamaguchi, K., Taniguchi, A.,Naitou, N and Nabeshima, Y 1987), with permission from The Optical Society ofAmerica; Figure 7.10 (a) from A stripe-geometry double-heterostructure amplified-spontaneous-emission (superluminescent) diode in IEEE Journal of Quantum ElectronicsQE-9, p 820 (Lee, T P., Burrus, C A and Miller, B I 1973), with permission from IET;Figure 7.10 (b) from High output power GaInAsP/InP superluminescent diode at 1.3μm

in Electronic Letters, 24(24) pp 1507–1508, Institution of Engineering and Technology

(Kashima, Y., Kobayashi, M and Takano, T 1988), with permission from IET; Figure7.14 from Highly efficient long lived GaAlAs LEDs for fiber-optical communications in

IEEE Trans Electron Devices, ED-24(7) pp 990–994, Institution of Engineering and

Technology (Abe, M., Umebu, I., Hasegawa, O., Yamakoshi, S., Yamaoka, T., Kotani, T.,Okada, H., and Takamashi, H 1977), with permission from IET; Figure 7.15 from

coupling to small numerical aperture silica optical fibers in IEEE Trans Electron Devices,

ED-26(8), pp 1215–1220, Institution of Engineering and Technology (Goodfellow, R C.,Carter, A C., Griffith, I and Bradley, R R 1979), with permission from IET; Figures

7.19 and 7.23 were published in Optical Fiber Telecommunications II, T P Lee, C A.

Burrus Jr and R H Saul, Light-emitting diodes for telecommunications, pp 467–507,edited by S E Miller and I P Kaminow, 1988, Copyright Elsevier 1988; Figure 7.20from Lateral confinement InGaAsP superluminescent diode at 1.3μm in IEEE Journal of Quantum Electronics, QE19, p 79, IEEE (Kaminow, I P., Eisenstein, G., Stulz, L W and

Dentai, A G 1983), © IEEE 1983, reproduced with permission; Figure 7.21 adapted fromFigure 6, page 121 of AlGaInN resonant-cavity LED devices studied by electromodulated

reflectance and carrier lifetime techniques in IEE Proceedings on Optoelectronics,

vol 152, no 2, pp 118–124, 8 April 2005, Institution of Engineering and Technology(Blume, G., Hosea, T J C., Sweeney, S J., de Mierry, P., Lancefield, D 2005), with per-mission from IET; Figure 7.22 (b) from Light-emitting diodes for optical fibre systems in

Radio and Electronic Engineer (J IERE), 51(7/8), p 41, Institution of Engineering and

Technology (Carter, A C 1981), with permission from IET; Figure 8.3 from Optical

Communications Essentials (Telecommunications), McGraw-Hill Companies (Keiser, G.

2003), with permission of the McGraw-Hill Companies; Figure 8.19 (a) from Improved

germanium avalanche photodiodes in IEEE Journal of Quantum Electronics, QE-16(9),

pp 1002–1007 (Mikami, O., Ando, H., Kanbe, H., Mikawa, T., Kaneda, T and Toyama, Y.1980), © IEEE 1980, reproduced with permission; Figure 8.19 (b) from High-sensitivityHi-Lo germanium avalanche photodiode for 1.5μm wavelength optical communication

in Electronic Letters, 20(13), pp 552–553, Institution of Engineering and Technology

(Niwa, M., Tashiro, Y., Minemura, K and Iwasaki, H 1984), with permission from IET;

Figure 8.24 from Impact ionisation in multi-layer heterojunction structures in Electronic

Letters, 16(12), pp 467–468, Institution of Engineering and Technology (Chin, R.,

Holonyak, N., Stillman, G E., Tang, J Y and Hess, K 1980), with permission from IET;

Figure 8.25 Reused with permission from Federico Capasso, Journal of Vacuum Science

& Technology B, 1, 457 (1983) Copyright 1983, AVS The Science & Technology

Society; Figure 8.29 Reused with permission from P D Wright, R J Nelson, and

T Cella, Applied Physics Letters, 37, 192 (1980) Copyright 1980, American Institute of

Physics; Figure 8.32 from MSM-based integrated CMOS wavelength-tunable optical

receiver in IEEE Photonics Technology Letters, 17(6) pp 1271–1273 (Chen, R., Chin, H.,

Miller, D A B., Ma, K and Harris Jr., J S 2005); © IEEE 2005, reproduced with

per-mission; Figure 9.5 from Receivers for optical fibre communications in Electronic and

Radio Engineer, 51(7/8), p 349, Institution of Engineering and Technology (Garrett, I.

1981), with permission from IET; Figure 9.7 from Photoreceiver architectures beyond

40 Gbit/s, IEEE Symposium on Compound Semiconductor Integrated circuits, Monterey,California, USA, pp 85–88, October ( Ito, H 2004), © IEEE 2004, reproduced with per-mission; Figure 9.14 from GaAs FET tranimpedance front-end design for a wideband

optical receiver in Electronic Letters, 15(20), pp 650–652, Institution of Engineering and

Technology (Ogawa, K and Chinnock, E L 1979), with permission from IET; Figure 9.15

published in Optical Fiber Telecommunications II, B L Kaspar, Receiver design, p 689,

edited by S E Miller and I P Kaminow, 1988, Copyright Elsevier 1988; Figure 9.17

from An APD/FET optical receiver operating at 8 Gbit/s in Journal of Lightwave

Technology, LT-5(3) pp 344–347, OSA (Kaspar, B L., Campbell, J C., Talman, J R.,

Gnauck, A H., Bowers, J E and Holden, W S 1987), with permission from The Optical

Society of America; Figure 9.23 Reprinted from Optical Fiber Telecommunications IV A:

Components, B L Kaspar, O Mizuhara and Y K Chen, High bit-rates receivers,

trans-miters and electronics, pp 784–852, Figure 1.13, page 807, edited by I P Kaminow and

T Li, Copyright 2002, with permission from Elsevier; Figure 10.3 from Semiconductor

laser optical amplifiers for use in future fiber systems in Journal of Lightwave Technology

6(4), p 53, OSA (O’Mahony, M J 1988), with permission from The Optical Society

of America; Figure 10.8 from Noise performance of semiconductor optical amplifiers,International Conference on Trends in Communication, EUROCON, 2001, Bratislava,Slovakia, 1, pp 161–163, July (Udvary, E 2001), © IEEE 2001, reproduced with permis-sion; Figure 10.17 from Properties of fiber Raman amplifiers and their applicability to

digital optical communication systems in Journal of Lightwave Technology, 6(7), p 1225,

IEEE (Aoki, Y 1988), © IEEE 1988, reproduced with permission; Figure 10.18 (a) fromSemiconductor Raman amplifier for terahertz bandwidth optical communication in

Journal of Lightwave Technology, 20(4), pp 705–711, IEEE (Suto, K., Saito, T., Kimura,

T., Nishizawa, J I and Tanube, T 2002), © IEEE 2002, reproduced with permission;

Figure 11.2 from Scaling rules for thin-film optical waveguides, Applied Optics, 13(8),

p 1857, OSA (Kogelnik, H and Ramaswamy, V 1974), with permission from the Optical Society of America; Figure 11.7 Reused with permission from M Papuchon,

Y Combemale, X Mathieu, D B Ostrowsky, L Reiber, A M Roy, B Sejourne, and

M Werner, Applied Physics Letters, 27, 289 (1975) Copyright 1975, American Institute

of Physics; Figure 11.13 from Beam-steering micromirrors for large optical cross-connects

in Journal of Lightwave Technology, 21(3), pp 634–642, OSA (Aksyuk, V A et al.

2003), with permission from The Optical Society of America; Figure 11.23 from 5 Git/smodulation characteristics of optical intensity modulator monolithically integrated with

DFB laser in Electronic Letters, 25(5), pp 1285–1287, Institution of Engineering and

Technology (Soda, H., Furutsa, M., Sato, K., Matsuda, M and Ishikawa, H 1989), withpermission from IET; Figure 11.24 from Widely tunable EAM-integrated SGDBR

laser transmitter for analog applications in IEEE Photonics Technology Letters, 15(9),

pp 1285–1297, IEEE (Johansson, L A., Alkulova, Y A., Fish, G A and Coldren, L A.2003), © IEEE 2003, reproduced with permission; Figure 11.25 from 80-Gb/s InP-based

waveguide-integrated photoreceiver in IEEE Journal of Sel Top Quantum Electronics,

11(2), pp 356–360, IEEE (Mekonne, G G., Bach, H G., Beling, A., Kunkel, R., Schmidt,

D and Schlaak, W 2005), © IEEE 2005, reproduced with permission; Figure 11.27

from Wafer-scale replication of optical components on VCSEL wafers in Proceedings of

Optical Fiber Communication, OFC 2004, Los Angeles, USA, vol 1, 23–27 February,

© IEEE 2004, reproduced with permission; Figure 11.28 from Terabus:

terabit/second-class card-level optical interconnect technologies in IEEE Journal of Sel Top Quantum

Electronics, 12(5), pp 1032–1044, IEEE (Schares, L., Kash, J A., Doany, F E., Schow,

C L., Schuster, C., Kuchta, D M., Pepeljugoski, P K., Trewhella, J M., Baks, C W andJohn, R A 2006), © IEEE 2006, reproduced with permission; Figure 11.29 from Figure 2,http://www.fujitsu.com/global/news/pr/archives/month/2007/20070119-01.html, courtesy

of Fujitsu Limited; Figure 11.33 (b) from Large-scale InP photonic integrated circuits:

enabling efficient scaling of optical transport networks, IEEE Journal of Se Top.

Quantum Electronics, 13(1) pp 22–31, IEEE (Welch, D F et al 2007), © IEEE 2007,

reproduced with permission; Figure 11.33 (c) from Monolithically integrated 100-channel

WDM channel selector employing low-crosstalk AWG in IEEE Photonics

Techno-logy Letters, 16(11), pp 2481–2483, IEEE (Kikuchi, N., Shibata, Y., Okamoto, H.,

Kawaguchi, Y., Oku, S., Kondo, Y and Tohmori, Y 2004), © IEEE 2004, reproducedwith permission; Figure 11.35 Reused with permission from P W Smith, I P Kaminow,

P J Maloney, and L W Stulz, Applied Physics Letters, 33, 24 (1978) Copyright 1978,

American Institute of Physics; Figure 11.38 from All-optical flip-flop multimode

interfer-ence bistable laser diode in IEEE Photonics Technology Letters, 17(5), pp 968–970, IEEE

(Takenaka, M., Raburn, M and Nakano, Y 2005), © IEEE 2005, reproduced with sion; Figure 11.42 from Optical bistability, phonomic logic and optical computation

permis-in Applied Optics, 25, pp 1550–1564, OSA (Smith, S D 1986), with permission from

The Optical Society of America; Figure 12.4 from Non-linear phase distortion and itscompensation in LED direct modulation in Electronic Letters, 13(6), pp 162–163,Institution of Engineering and Technology (Asatani, K and Kimura, T 1977), with permission from IET; Figures 12.6 and 12.7 from Springer-Verlag, Topics in AppliedPhysics, vol 39, 1982, pp 161–200, Lightwave transmitters, P W Schumate Jr and M

DiDomenico Jr., in H Kressel, ed., Semiconductor Devices for Optical Communications,

with kind permission from Springer Science and Business Media; Figure 12.12 from

Electronic circuits for high bit rate digital fiber optic communication systems in IEEE

Trans Communications, COM-26(7), pp 1088–1098, IEEE (Gruber, J., Marten, P.,

Petschacher, R and Russer, P 1978), © IEEE 1978, reproduced with permission; Figure

12.13 from Design and stability analysis of a CMOS feedback laser driver in IEEE Trans.

Instrum Meas., 53(1), pp 102–108, IEEE (Zivojinovic, P., Lescure, M and Tap-Beteille,

H 2004), © IEEE 2004, reproduced with permission; Figure 12.14 from Laser automaticlevel control for optical communications systems in Third European Conference onOptical Communications, Munich, Germany, 14–16 September (S R Salter, S R., Smith,

D R., White, B R and Webb, R P 1977), with permission from VDE-Verlag GMBH;

xxviii Acknowledgements

Figure 12.15 from Electronic circuits for high bit rate digital fiber optic communication

systems in IEEE Trans Communications, COM-26(7), pp 1088–1098, IEEE (Gruber, J.,

Marten, P., Petschacher, R and Russer, P 1978), © IEEE 1978, reproduced with sion; Figure 12.35 from NRZ versus RZ in 10–14-Gb/s dispersion-managed WDM

permis-transmission systems in IEEE Photonics Technology Letters, 11(8), pp 991–993, IEEE

(Hayee, M I., Willner, A E., Syst, T S and Eacontown, N J 1999), © IEEE 1999, reproduced with permission; Figure 12.36 from Dispersion-tolerant optical transmission

system using duobinary transmitter and binary receiver in Journal of Lightwave

Techno-logy, 15(8), pp 1530–1537, OSA (Yonenaga, K and Kuwano, S 1997), with permission

from The Optical Society of America; Figure 12.44 Copyright BAE systems Plc

Reproduced with permission from Fibre optic systems for analogue transmission, Marconi

Review, XLIV(221), pp 78–100 (Windus, G G 1981); Figure 12.53 from Performance

of optical OFDM in ultralong-haul WDM lightwave systems in Journal of Lightwave

Technology, 25(1), pp 131–138, OSA (Lowery, A J., Du, L B and Armstrong, J 2007),

with permission from The Optical Society of America; Figure 12.58 from 110 channels ×

2.35 Gb/s from a single femtosecond laser in IEEE Photonics Technology Letters, 11(4),

pp 466–468, IEEE (Boivin, L., Wegmueller, M., Nuss, M C and Knox, W H 1999),

© IEEE 1999, reproduced with permission; Figure 12.64 from 10 000-hop cascaded

in-line all-optical 3R regeneration to achieve 1 250 000-km 10-Gb/s transmission in IEEE

Photonics Technology Letters, 18(5), pp 718–720, IEEE (Zuqing, Z., Funabashi, M.,

Zhong, P., Paraschis, L and Yoo, S J B 2006), © IEEE 2006, reproduced with sion; Figure 12.65 from An experimental analysis of performance fluctuations in high-capacity repeaterless WDM systems in Proceedings of OFC/Fiber Optics EngineeringConference (NFOEC) 2006, Anaheim, CA, USA, p 3, 5–10 March, OSA (Bakhshi, B.,Richardson, L., Golovchenko, E A., Mohs, G and Manna, M 2006), with permission

permis-from The Optical Society of America; Figure 12.73 permis-from Springer-Verlag, Massive WDM

and TDM Soliton Transmission Systems 2002, A Hasegawa, © 2002 Springer, with kind

permission from Springer Science and Business Media; Figure 13.7 from Techniques

for multigigabit coherent optical transmission in Journal of Lightwave Technology,

LT-5, p 1466, IEEE (Smith, D W 1987), © IEEE 1987, reproduced with permission;Figure 13.15 from Costas loop experiments for a 10.6μm communications receiver in

IEEE Tras Communications, COM-31(8), pp 1000–1002, IEEE (Phillip, H K., Scholtz,

A L., Bonekand, E and Leeb, W 1983), © IEEE 1983, reproduced with permission;

Figure 13.18 from Semiconductor laser homodyne optical phase lock loop in Electronic

Letters, 22, pp 421–422, Institution of Engineering and Technology (Malyon, D J.,

Smith, D W and Wyatt, R 1986), with permission from IET; Figure 13.32 from A consideration of factors affecting future coherent lightwave communication systems in

Journal of Lightwave Technology, 6, p 686, OSA (Nosu, K and Iwashita, K 1988), with

permission from The Optical Society of America; Figure 13.34 from RZ-DPSK field trail

over 13 100 km of installed non-slope matched submarine fibers in Journal of Lightwave

Technology, 23(1) pp 95–103, OSA (Cai, J X et al 2005), with permission from The

Optical Society of America; Figure 13.35 from Polarization-multiplexed 2.8 Gbit/s chronous QPSK transmission with real-time polarization tracking in Proceedings of the33rd European Conference on Optical Communications, Berlin, Germany, pp 263–264,

syn-3 September (Pfau, T et al 2007), with permission from VDE Verlag GMBH; Figure 1syn-3.syn-36

from Hybrid 107-Gb/s polarization-multiplexed DQPSK and 42.7-Gb/s DQPSK transmission

at 1.4 bits/s/Hz spectral efficiency over 1280 km of SSMF and 4 bandwidth-managedROADMs in Proceedings of the 33rd European Conference on Optical Communications,Berlin, Germany, PD1.9, September, with permission from VDE Verlag GMBH; Figure

13.37 from Coherent optical orthogonal frequency division multiplexing in Electronic

Letters, 42(10), pp 587–588, Institution of Engineering and Technology (Shieh, W and

Athaudage, C 2006), with permission from IET; Figure 14.1 (a) from Mode scrambler for

optical fibres in Applied Optics, 16(4), pp 1045–1049, OSA (Ikeda, M., Murakami, Y.

and Kitayama, C 1977), with permission from The Optical Society of America; Figure14.1 (b) from Measurement of baseband frequency reponse of multimode fibre by using a

new type of mode scrambler in Electronic Letters, 13(5), pp 146–147, Institution of

Engineering and Technology (Seikai, S., Tokuda, M., Yoshida, K and Uchida, N 1977),with permission from IET; Figure 14.6 from An improved technique for the measurement

of low optical absorption losses in bulk glass in Opto-electronics, 5, p 323, Institution of

Engineering and Technology (White, K I and Midwinter, J E 1973); with permissionfrom IET; Figure 14.8 from Self pulsing GaAs laser for fiber dispersion measurement in

IEEE Journal of Quantum Electronics, QE-8, pp 844–846, IEEE (Gloge, D., Chinnock,

E L and Lee, T P 1972), © IEEE 1972, reproduced with permission; Figure 14.12,image of 86038B Optical Dispersion Analyzer, © Agilent Technologies, Inc 2005,Reproduced with Permission, Courtesy of Agilent Technologies, Inc.; Figure 14.13 (a)

from Refractive index profile measurements of diffused optical waveguides in Applied

Optics, 13(9), pp 2112–2116, OSA (Martin, W E 1974), with permission from The

Optical Society of America; Figures 14.13 (b) and 14.14 Reused with permission from

L G Cohen, P Kaiser, J B Mac Chesney, P B O’Connor, and H M Presby, Applied

Physics Letters, 26, 472 (1975) Copyright 1975, American Institute of Physics; Figures

14.17 and 14.18 (a) Reused with permission from F M E Sladen, D N Payne, and M J

Adams, Applied Physics Letters, 28, 255 (1976) Copyright 1976, American Institute of Physics; Figure 14.19 from An Introduction to Optical Fibers, McGraw-Hill Companies

(Cherin, A H 1983), with permission of the McGraw-Hill Companies; Figure 14.26

Reused with permission from L G Cohen and P Glynn, Review of Scientific Instruments,

44, 1749 (1973) Copyright 1973, American Institute of Physics; Figure 14.31 (a) from EXFOhttp://documents.exfo.com/appnotes/anote044-ang.pdf, accessed 21 September 2007, withpermission from EXFO; Figure 14.31 (b) from http://www.afltelecommunications.com,Afltelecommunications Inc., accessed 21 September 2007, with permission from FujikuraLimited; Figure 14.35 from EXFO, OTDR FTB-7000B http://documents.exfo.com/appnotes/anote087-ang.pdf, accessed 21 September 2007, with permission from EXFO;Figure 14.36 from EXFO P-OTDR, accessed 21 September 2007, with permission from

EXFO; Figure 15.1 from Future optical networks in Journal of Lightwave Technology,

24(12), pp 4684–4696 (O’Mahony, M J., Politi, C., Klonidis, D., Nejabati, R andSimeonidou, D 2006), with permission from The Optical Society of America; Figures15.14 (a) and (b) from ITU-T Recommendation G.709/Y.1331(03/03) Interfaces for theOptical Transport Network (TON), 2003, reproduced with kind permission from ITU;Figures 15.25 and 15.26 from Enabling technologies for next-generation optical packet-

switching networks in Proceedings of IEEE 94(5), pp 892–910 (Gee-Kung, C., Jianjun, Y.,

Yong-Kee, Y., Chowdhury, A and Zhensheng, J 2006), © IEEE 2006, reproduced withpermission; Figures 15.30, 15.31 and 15.32 from www.telegeography.com, accessed

17 October 2007, reproduced with permission; Figure 15.34 from Transparent optical

www.elsolucionario.org

protection ring architectures and applications in Journal of Lightwave Technology,

23(10), pp 3388–3403 (Ming-Jun, L., Soulliere, M J., Tebben, D J., Nderlof, L., Vaughn,

M D and R E Wagner, R E 2005), with permission from The Optical Society ofAmerica; Figure 15.46 from Hybrid DWDM-TDM long-reach PON for next-generation

optical access in Journal of Lightwave Technology, 24(7), pp 2827–2834 (Talli, G

and Townsend, P D 2006), with permission from The Optical Society of America; Figure 15.52 from IEEE 802.3 CSMA/CD (ETHERNET), accessed 17 October 2007, reproduced with permission; Figure 15.53 (a) from ITU-T Recommendation G.985(03/2003) 100 Mbit/s point-to-pint Ethernet based optical access system, accessed

22 October 2007, reproduced with kind permission from ITU; Figure 15.53 (b) from ITU-TRecommendation Q.838.1 (10/2004) Requirements and analysis for the managementinterface of Ethernet passive optical networks (EPON), accessed 19 October 2007, repro-duced with kind permission from ITU; Table 15.4 from Deployment of submarine opticalfiber bacle and communication systems since 2001, www.atlantic-cable.com/Cables/CableTimeLine/index2001.htm, reproduced with permission

In some instances we have been unable to trace the owners of copyright material, and

we would appreciate any information that would enable us to do so

List of symbols and

abbreviations

A constant, area (cross-section, emission), far-field pattern size, mode

ampli-tude, wave amplitude (A0)

A21 Einstein coefficient of spontaneous emission

Ac peak amplitude of the subcarrier waveform (analog transmission)

a fiber core radius, parameter which defines the asymmetry of a planar guide

(given by Eq (10.21)), baseband message signal (a(t))

ab(λ) effective fiber core radius

aeff bend attenuation fiber

ak integer 1 or 0

am(λ) relative attenuation between optical powers launched into multimode and

single-mode fibers

B constant, electrical bandwidth (post-detection), magnetic flux density, mode

amplitude, wave amplitude (B0)

B12, B21 Einstein coefficients of absorption, stimulated emission

BF modal birefringence

Bfib fiber bandwidth

BFPA mode bandwidth (Fabry–Pérot amplifier)

Bm bandwidth of an intensity-modulated optical signal m(t), maximum 3 dB

bandwidth (photodiode)

Bopt optical bandwidth

Br recombination coefficient for electrons and holes

BT bit rate, when the system becomes dispersion limited (BT(DL))

b normalized propagation constant for a fiber, ratio of luminance to composite

video, linewidth broadening factor (injection laser)

C constant, capacitance, crack depth (fiber), wave coupling coefficient per unit

length, coefficient incorporating Einstein coefficients

Ca effective input capacitance of an optical fiber receiver amplifier

Cd optical detector capacitance

Cf capacitance associated with the feedback resistor of a transimpedance

optical fiber receiver amplifier

Cj junction capacitance (photodiode)

CL total optical fiber channel loss in decibels, including the dispersion–

equalization penalty (CLD)

C0 wave amplitude

CT total capacitance

CT polarization crosstalk

c velocity of light in a vacuum, constant (c1, c2)

D amplitude coefficient, electric flux density, distance, diffusion coefficient,

corrugation period, decision threshold in digital optical fiber transmission,

fiber dispersion parameters: material (DM); profile (DP); total first order (DT);

waveguide (DW), detectivity (photodiode), specific detectivity (D*)

(photodetector), thickness of recombination region (optical source), pindiameter (mode scrambler)

vari-able, electron energy

EF Fermi level (energy), quasi-Fermi level located in the conduction band (EFc),

valence band (EFv) of a semiconductor

semicon-ductor (bandgap energy)

Em(t) subcarrier electric field (analog transmission)

F probability of failure, transmission factor of a semiconductor–external

inter-face, excess avalanche noise factor (F(M)), optical amplifier noise figure

Fto total noise figure for system of cascaded optical amplifiers

cavity gain of a semiconductor laser amplifier

C gain coefficient per unit length (laser cavity)

gm transconductance of a field effect transistor, material gain coefficient

C

H(ω) optical power transfer function (fiber), circuit transfer function

equalization)

HCL(ω) closed loop current to voltage transfer function (receiver amplifier)

Heq(ω) equalizer transfer function (frequency response)

HOL(ω) open loop current to voltage transfer function (receiver amplifier)

Hout(ω) output pulse spectrum from an optical fiber receiver

for optical fiber (h(t)), mode coupling parameter (PM fiber)

hA(t) optical fiber receiver amplifier impulse response (including any equalization)

hout(t) output pulse shape from an optical fiber receiver

hp(t) input pulse shape to an optical fiber receiver

ht(t) transmitted pulse shape on an optical fiber link

Ibias bias current for an optical detector

coherent receiver

iamp optical receiver, preamplifier total noise current

if noise current generated in the feedback resistor of an optical fiber receiver

transimpedance preamplifier

iN total noise current at a digital optical fiber receiver

noise current

noise current

xxxiv List of symbols and abbreviations

isig signal current obtained in an optical fiber receiver

iTS total shot noise current for a photodiode without internal gain

KI stress intensity factor, for an elliptical crack (KIC)

vector for an electron in a crystal, ratio of ionization rates for holes and electrons, integer, coupling coefficient for two interacting waveguidemodes, constant

(wave-guide modes)

Lac insertion loss of access coupler in distribution system

LD diffusion length of charge carriers (LED), fiber dispersion length

of guided modes or mode volume; for a multimode step index fiber (Ms); for

multimode graded index fiber (Mg), mean value (M1) and mean square value

(M2) of a random variable

M x

excess avalanche noise factor (also denoted as F(M))

optical signal (m(t)), mean value of a random variable, integer, optical

modulation index (subcarrier amplitude modulation)

N integer, density of atoms in a particular energy level (e.g N1, N2, N3),

minority carrier concentration in n-type semiconductor material, number of

input/output ports on a fiber star coupler, number of nodes on distribution

system, noise current, dimensionless combination of pulse and fiber eters (soliton)

n refractive index (e.g n1, n2, n3), stress corrosion susceptibility, negative-type

semiconductor material, electron density, number of chips (OCDM)

neff effective refractive index of a single-mode fiber

mater-ial, probability of error (P(e)), of detecting a zero level (P(0)), of detecting a one level (P(1)), of detecting z photons in a particular time period (P(z)),

conditional probability of detecting a zero when a one is transmitted

power (P1, P2, etc.)

transmitted through fiber sample

Pc optical power coupled into a step index fiber, optical power level

Pint internally generated optical power (optical source)

Pout initial output optical (prior to degradation) power from an optical source

PRa(t) backscattered optical power (Rayleigh) within a fiber

xxxvi List of symbols and abbreviations

www.elsolucionario.org

p crystal momentum, average photoelastic coefficient, positive-type

semicon-ductor material, probability density function (p(x))

R photodiode responsivity, radius of curvature of a fiber bend, electrical

resist-ance (e.g Rin, Rout); facet reflectivity (R1, R2)

R12 upward transition rate for electrons from energy level 1 to level 2

R21 downward transition rate for electrons from energy level 2 to level 1

Ra effective input resistance of an optical fiber receiver preamplifier

Rb bias resistance, for optical fiber receiver preamplifier (Rba)

REdB ratio of electrical output power to electrical input power in decibels for an

optical fiber system

Rf feedback resistance in an optical fiber receiver transimpedance preamplifier

ROdB ratio of optical output power to optical input power in decibels for an optical

fiber system

RTL total load resistance within an optical fiber receiver

reflectivity, electro-optic coefficient

rER, rET reflection and transmission coefficients, respectively, for the electric field at

a planar, guide–cladding interface

rHR, rHT reflection and transmission coefficients respectively for the magnetic field at

a planar, guide–cladding interface

(fiber), power spectral density S(ω)

Sm(ψ) spectral density of the intensity-modulated optical signal m(t)

[(S/N)p–p] with rms signal power [(S/N)rms]

Ta insertion loss resulting from an angular offset between jointed optical fibers

fiber link

TF fictive temperature

Tl insertion loss resulting from a lateral offset between jointed optical fibers

fiber link

Tsyst total 10 to 90% rise time for an optical fiber system

TT total insertion loss at an optical fiber joint

t time, carrier transit time, slow(ts), fast (tf)

waveguide

Vopt voltage reading corresponding to the total optical power in a fiber

Vsc voltage reading corresponding to the scattered optical power in a fiber

vA(t) receiver amplifier output voltage

thickness, grating line spacing

xxxviii List of symbols and abbreviations