Iec 60793 2 10 2015

10 Ta le 2 – Dimen ional req irements common to category A1 fibres.. A .2 Dimensional requirements Ta le A.1 contain dimen ional req irements sp cific to A1a f ibres.. Table A.2 – Me ha

Opt ical fibres –

Part 2- 10: Product specificat ions – Sect ional specificat ion for cat egory A1

Fibres opt iques –

Part ie 2- 10: Spécificat ions de produit s – Spécificat ion int ermédiaire pour les

fibres mult imodales de cat égorie A1

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Th st an -alo e a plc t io for c n ultin th e tire

biblo ra hic l informat io o IEC Intern tio al Sta d rd ,

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d c me ts A v aia le for P , Ma OS, A ndroid Ta let s a d

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Opt ical fibres –

Part 2- 10: Product specificat ions – Sect ional specificat ion for cat egory A1

Fibres opt iques –

Part ie 2- 10: Spécificat ions de produit s – Spécificat ion int ermédiaire pour les

fibres mult imodales de cat égorie A1

INT ERNAT IONAL

ELECT ROT ECHNICAL

ELECT ROT ECHNIQUE

INT ERNAT IONALE

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FOREWORD 5

1 Sco e 7

2 Normative ref eren es 7

3 Terms, def i ition an a breviation 9

3.1 Terms an def i ition 9

3.2 Ab reviation 9

4 Sp cif i ation 9

4.1 Dimen ional req irements 9

4.2 Mec anical req irements 10 4.3 Tran mis ion req irements 1

4.4 En ironmental req irements 13 4.4.1 General 13 4.4.2 Mec anical en ironmental requirements (common to al fibres in category A1) 14 4.4.3 Tran mis ion en ironmental req irements 15 (normative) Fami y sp cification for A1a multimode fibres 16 An ex A A.1 General 1

6 A.2 Dimen ional req irements 16 A.3 Mec anical req irements 17 A.4 Tran mis ion req irements 17 A.5 En ironmental req irements 18 (normative) Fami y sp cification for A1b multimode fibres 19 An ex B B.1 General 19 B.2 Dimen ional req irements 19 B.3 Mec anical req irements 19 B.4 Tran mis ion req irements 19 B.5 En ironmental req irements 2

(normative) Famiy sp cif i ation for A1d multimode f ibres 21

An ex C C.1 General 21

C.2 Dimen ional req irements 21

C.3 Mec anical req irements 21

C.4 Tran mis ion req irements 21

C.5 En ironmental req irements 2

(normative) Fibre diff erential mode delay (DMD) an calc lated efective An ex D modal b n width (EMBc) req irements 2

D.1 A1a.2 f ibre DMD req irements 2

D.1.1 General 2

D.1.2 DMD templates 2

D.1.3 DMD interval mas s 2

D.2 A1a.2 f ibre EMB c req irements 2

D.2.1 General 2

D.2.2 Calc lated ef fective b n width 2

D.3 A1a.3 DMD req irements 2

D.3.1 General 2

D.3.2 DMD templates 2

D.3.3 DMD interval mas s 2

D.4 A1a.3 f ibre EMB

c

req irements 2

D.4.1 General 2

D.4.2 Calc lated ef fective b n width 2

(informative) Modal b n width con ideration an tran mit er req irements 2

An ex E E.1 Bac grou d 2

E.2 Tran miter en ircled f l x (EF) an centre wavelen th req irements 2

E.2.1 En ircled flu 2

E.2.2 Centre wavelen th 2

E.3 EMB 3

(informative) Ban width nomen lature explanation 31

An ex F (informative) Prel minary in ication for items ne din further stu y 3

An ex G G.1 Ef fective modal b n width (EMB) at 1 3 0 nm 3

G.2 Scal n of EMB with DMD 3

(inf ormative) Ap lcation s p orted by A1 fibres 3

An ex H H.1 International y stan ardised a pl cation 3

H.2 Used commercial b n width sp cification 3

H.3 Cros referen e of fibre typ s in this stan ard an ISO/IEC 1 8 1 3

H.4 Ref eren e doc ments 3

(informative) 1-Giga it, 10-Giga it, 4 -Giga it an 10 -Giga it Ethernet An ex I a pl cation 3

Biblogra h 4

Fig re 1 – Relation b twe n b n width at 8 0 nm an 1 3 0 nm 13 Fig re D.1 – DMD template req irements 2

Ta le 1 – Dimen ional atributes an me s rement method 10 Ta le 2 – Dimen ional req irements common to category A1 fibres 10 Ta le 3 – Ad itional dimen ional atributes req ired in f ami y sp cification 10 Ta le 4 – Mec anical at ributes an me s rement method 1

Ta le 5 – Mec anical req irements common to category A1 f ibres 1

Ta le 6 – Tran mis ion atributes an me s rement method 12 Ta le 7 – Ad itional tran mis ion at ributes req ired in fami y sp cification 12 Ta le 8 – En ironmental exp s re tests 13 Ta le 9 – At ributes me s red for en ironmental tests 14 Ta le 10 – Strip f orce f or en ironmental tests 14 Ta le 1 – Ten i e stren th for en ironmental tests 14 Ta le 12 – Stres cor osion s s e tibi ty for en ironmental tests 15 Ta le 13 – Chan e in at en ation for en ironmental tests 15 Ta le A.1 – Dimen ional req irements sp cific to A1a f ibres 16 Ta le A.2 – Mec anical req irements sp cific to A1a f ibres 17 Ta le A.3 – Tran mis ion req irements sp cific to A1a f ibres 18 Ta le B.1 – Dimen ional req irements sp cific to A1b f ibres 19 Ta le B.2 – Mec anical req irements sp cific to A1b f ibres 19 Ta le B.3 – Tran mis ion req irements sp cific to A1b f ibres 2

Ta le C.2 – Mec anical req irements sp cif i to A1d fibres 21

Ta le C.3 – Tran mis ion req irements sp cific to A1d f ibres 2

Ta le D.1 – DMD templates f or A1a.2 f ibres 2

Ta le D.2 – DMD interval mas s f or A1a.2 f ibres 2

Ta le D.3 – DMD weig tin s (1 of2) 2

Ta le D.4 – DMD templates f or A1a.3 f ibres 2

Ta le D.5 – DMD interval mas s f or A1a.3 f ibres 2

Ta le F.1 – Ban width nomen lature explanation 31

Ta le H.1 – Some international y stan ardised a pl cation s p orted by A1a and A1b f ibres 3

Ta le H.2 – Typical y u ed commercial b n width sp cification for A1a an A1b graded-in ex multimode fibres 3

Ta le H.3 – Cros referen e b twe n this stan ard an ISO/IEC 1 8 1 3

Ta le I 1 – Summary of 1 Gb/s, 10 Gb/s, 4 Gb/s an 10 Gb/s Ethernet req irements an ca a i ties (1 of 3) 3

INTERNATIONAL ELECTROTECHNICAL COMMISSION

1 Th Intern tio al Ele trote h ic l Commis io (IEC) is a worldwid org niz tio for sta d rdiz tio c mprisin

al n tio al ele trote h ic l c mmite s (IEC Natio al Commite s) Th o je t of IEC is to promote

intern tio al c -o eratio o al q e tio s c n ernin sta d rdiz tio in th ele tric l a d ele tro ic f i ld To

this e d a d in a ditio to oth r a tivitie , IEC p bls e Intern tio al Sta d rd , Te h ic l Sp cif i atio s,

Te h ic l Re orts, Pu lcly Av ia le Sp cif i atio s (P S) a d Guid s (h re f ter refer e to a “IEC

Pu lc tio (s)”) Th ir pre aratio is e tru te to te h ic l c mmite s; a y IEC Natio al Commite intere te

in th s bje t d alt with ma p rticip te in this pre aratory work Intern tio al g v rnme tal a d n

n-g v rnme tal org niz tio s laisin with th IEC als p rticip te in this pre aratio IEC c la orate clo ely

with th Intern tio al Org niz tio f or Sta d rdiz tio (ISO) in a c rd n e with c n itio s d termin d b

a re me t b twe n th two org niz tio s

2) Th f ormal d cisio s or a re me ts of IEC o te h ic l maters e pre s, a n arly a p s ible, a intern tio al

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intere te IEC Natio al Commite s

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Commite s in th t s n e Whie al re s n ble ef forts are ma e to e s re th t th te h ic l c nte t of IEC

Pu lc tio s is a c rate, IEC c n ot b h ld re p n ible f or th wa in whic th y are u e or f or a y

misinterpretatio b a y e d u er

4) In ord r to promote intern tio al u if ormity, IEC Natio al Commite s u d rta e to a ply IEC Pu lc tio s

tra s are tly to th ma imum e te t p s ible in th ir n tio al a d re io al p blc tio s An div rg n e

b twe n a y IEC Pu lc tio a d th c re p n in n tio al or re io al p blc tio s al b cle rly in ic te in

th later

5) IEC its lf d e n t pro id a y ate tatio of c nf ormity In e e d nt c rtific tio b die pro id c nf ormity

a s s me t s rvic s a d, in s me are s, a c s to IEC mark of c nf ormity IEC is n t re p n ible f or a y

s rvic s c rie o t b in e e d nt c rtif i atio b die

6) Al u ers s o lde s re th t th y h v th late t e itio of this p blc tio

7) No la i ty s al ata h to IEC or its dire tors, emplo e s, s rv nts or a e ts in lu in in ivid al e p rts a d

memb rs of its te h ic l c mmite s a d IEC Natio al Commite s f or a y p rs n l injury, pro erty d ma e or

oth r d ma e of a y n ture wh ts e er, wh th r dire t or in ire t, or for c sts (in lu in le al f ee ) a d

e p n e arisin o t of th p blc tio , u e of, or rela c u o , this IEC Pu lc tio or a y oth r IEC

Pu lc tio s

8) Ate tio is drawn to th Normativ refere c s cite in this p blc tio Us of th refere c d p blc tio s is

in is e s ble for th c r e t a plc tio of this p blc tio

9) Ate tio is drawn to th p s ibi ty th t s me of th eleme ts of this IEC Pu lc tio ma b th s bje t of

p te t rig ts IEC s al n t b h ld re p n ible for id ntifyin a y or al s c p te t rig ts

International Stan ard IEC 6 7 3-2-10 has b en pre ared by s bcommite 8 A: Fibres an

ca les, of IEC tec nical commit e 8 : Fibre o tic

This fifth edition can els an re laces the f ourth edition publs ed in 2 1 This edition

con titutes a tec nical revision

This edition in lu es the f ol owin sig ificant tec nical c an es with resp ct to the previou

edition:

a) addition of en an ed macro en in multimode f ibres A1a.1b, A1a.2 an A1a.3 ;

b) in lu ion of the sp cified test wavelen th an sp cimen len th for core diameter (CD),

n merical a erture (NA), dif ferential mode delay (DMD) an thres old values for CD an

NA;

c) addition of a sp cimen len th f or 8 0 nm b n width of A1a an A1b fibres

The text of this stan ard is b sed on the fol owin doc ments:

Ful inf ormation on the votin for the a proval of this stan ard can b foun in the re ort on

votin in icated in the a ove ta le

This publ cation has b en draf ted in ac ordan e with the ISO/IEC Directives, Part 2

A l st of al p rts in the IEC 6 7 3 series, publs ed u der the general title Opt ic l fibres, can

b fou d on the IEC we site

The commit e has decided that the contents of this publ cation wi remain u c an ed u ti

the sta i ty date in icated on the IEC we site u der "ht p:/we store.iec.c " in the data

related to the sp cif i publ cation At this date, the publ cation wi b

• with rawn,

• re laced by a revised edition, or

IMPORTANT – The 'colour inside' logo on the cov r pa e of this publ c tion in ic te

that it contains colours whic are considere to be us f ul f or the cor e t

understa din of its conte ts Us rs s ould th refore print this doc me t using a

colour printer

OPTICA L FIBRES –

Part 2-10: Product specifications –

Sectional specification for category A 1 multimode fibres

This p rt of IEC 6 7 3 is a pl ca le to o tical fibre typ s A1a, A1b, an A1d These f ibres are

u ed or can b in orp rated in information tran mis ion eq ipment an o tical f ibre ca les

Typ A1a a ples to 5 /12 µm graded in ex fibre Thre b n width grades are defined as

A1a.1, A1a.2 an A1a.3 Eac of these b n width grades is defined for two levels of

macro en los p rorman e that are distin uis ed by “a” or “b” s ff i Those with s ff i “a”

are sp cif ied to me t traditional macro en los p r orman e levels Those with s ff i “b” are

sp cified to me t en an ed macro en los (i.e lower los ) p rf orman e levels

Typ A1b a pl es to 6 ,5/12 µm graded in ex fibre an A1d a pl es to 10 /14 µm graded

in ex fibre

Other a pl cation in lu e, but are not restricted to, the folowin : s ort re c , hig bit- ate

s stems in tele hon , distribution an local network car yin data, voice an /or vide

services; on-premises intra-bui din an inter bui din fibre in tal ation in lu in data

centres, local are network (LANs), storage are network (SANs), private bran h

ex han es (PBXs), vide , variou multiplexin u es, outside tele hone ca le plant u e, an

mis el ane u related u es

Thre typ s of req irements a ply to these f ibres:

• general req irements, as def i ed in IEC 6 7 3-2;

• sp cific req irements common to the category A1 multimode fibres covered in this

stan ard an whic are given in Clau e 3;

• p rtic lar req irements a plca le to in ivid al fibre typ s or sp cif i a pl cation , whic

are defined in the normative f ami y sp cification an exes

The f ol owin doc ments, in whole or in p rt, are normatively ref eren ed in this doc ment an

are in isp n a le f or its a pl cation For dated ref eren es, only the edition cited a ples For

u dated referen es, the latest edition of the referen ed doc ment (in lu in an

amen ments) a pl es

IEC 6 7 3-1 (al p rts), Opt ic l fibres – P art 1: M easurement met hods a d test pro ed ures

IEC 6 7 3-1-2 , Optic l fibres – P art 1-2 : Measureme t meth ds a d test pro ed ures –

IEC 6 7 3-1-3 , Optic l fibres – P art 1-3 : Measureme t meth ds a d test pro ed ures –

Fibre pro f test

IEC 6 7 3-1-31, Optic l fibres – P art 1-31: Measureme t meth ds a d test pro ed ures –

Te sile stre gth

IEC 6 7 3-1-3 , Optic l fibres – P art 1-3 : Measureme t meth ds a d test pro ed ures –

Co ting stripp bility

IEC 6 7 3-1-3 , Optic l fibres – P art 1-3 : Measureme t meth ds a d test pro ed ures –

Stres c rosion susc pt ibility

IEC 6 7 3-1-3 , Optic l fibres – P art 1-3 : Measureme t meth ds a d test pro ed ures –

IEC 6 7 3-1-4 , Optic l fibres – P art 1-4 : Measureme t meth ds a d test pro ed ures –

Chromatic d isp rsion

IEC 6 7 3-1-4 , Opt ic l fibres – P art 1-4 : Measureme t meth ds a d test pro ed ures –

N umeric l a erture me sureme t

IEC 6 7 3-1-4 , Opt ic l fibres – P art 1-4 : Measureme t meth ds a d test pro ed ures –

Mo it orin ofc a g s in o tic l tra smittan e

IEC 6 7 3-1-4 , Optic l fibres – P art 1-47 : Measureme t meth ds a d test pro ed ures –

IEC 60 9 -1-4 , Optic l fibres – P art 1-4 : Measureme t meth ds a d test pro ed ures –

Differe tial mod e delay

IEC 6 7 3-1-5 , Opt ic l fibres – P art 1-50: Measureme t meth ds a d test pro ed ures –

Damp h at (ste dy stat e) t ests

IEC 6 7 3-1-51, Optic l fibres – P art 1-51: Measureme t met hods a d test pro ed ures –Dry

h at (ste dy state) tests

IEC 6 7 3-1-5 , Opt ic l fibres – P art 1-52: Measureme t meth ds a d test pro ed ures –

Ch n e oftemp rature tests

IEC 6 7 3-1-5 , Opt ic l fibres – P art 1-53: Measureme t meth ds a d test pro ed ures –

Water immersio tests

IEC 6 7 3-2:2 1 , Optic l fibres – P art 2: P rod uct sp cific t io s – Ge eral

IEC 612 0-4-1, Fibre-o t ic c mmu ic tion su system t est pro ed ures – P art 4-1: Installed

c ble plant – Multimod e at te u tio me sureme t

IEC TR 619 1, Fibre o tic – Termin log

3 Terms, def initions and abbreviations

EMBc calc lated ef fective modal b n width

4 Specif ications

NOT 1 Th fibre c n ists of a gla s c re with a gra e in e pro le a d a gla s cla din in a c rd n e with

IEC 6 7 3-2:2 1 , 5.1

NOT 2 Th term “gla s” u u ly refers to material c n istin of n n-metal c o id s

4.1 Dime sional re uireme ts

Dimen ional atributes an me s rement method are given in Ta le 1

Req irements common to al f ibres in category A1 are in icated in Ta le 2

Ta le 3 l sts ad itional at ributes that s al b sp cif ied by eac fami y sp cif i ation

Table 1 – Dime sional at ribute a d me s reme t methods

Atrib te Me s reme t meth d

Table 2 – Dime sional re uireme ts common to c te ory A1 fibre

Atrib te Unit Limit

Th a o e lmits o primary c atin diameter are mo t c mmo ly u e in tele ommu ic tio s c ble Th re

are oth r a plc tio s, whic u e oth r primary c atin diameters, s v ral of whic are lste b low

Altern tiv n min l primary c atin diameters a d tolera c (µm):

Cla din diameter

Cla din n n-circ larity

Core diameter

Core-cla din c n e tricity eror

4.2 Me ha ic l re uireme ts

Mec anical atributes an me s rement method are given in Ta le 4

Req irements common to al fibres in category A1 are in Ta le 5

Table 4 – Me h nic l at ribute a d me s reme t methods

Th pro f te t v lu of 0,6 GPa e u ls a o t 1 % strain or a o t 8,8 N forc ,

f or A1a a d A1b f i re For th relatio b twe n th s difere t u its, s e

IEC TR 6 0 8

b

Eith r a era e strip f orc or p a strip forc , whic are d f i e in th te t

pro e ure, ma b s e if i d b a re me t b twe n s p ler a d c stomer

4.3 Tra smis ion re uireme ts

Tran mis ion at ributes an me s rement method are given in Ta le 6

Ta le 7 l sts ad itional at ributes that s al b sp cif ied by eac fami y sp cification

Table 6 – Tra smis ion at ribute a d me s reme t methods

For mo al b n width eith r o eri e la n h (OFL) or o eri e la n h mo al

b n width c lc late fom dif fere tial mo e d la (OMBc) c n b u e OMBc

is th ref ere c te t meth d for A1a f i re at 8 0 nm

Sp cification compl an e of c romatic disp rsion can b as ured by compl an e to the

n merical a erture sp cif i ation

Table 7 – Additional tra smis ion at ribute

re uire in fami y spe if ic tions

Atrib te

Ate u tio c eff i ie t

Mo al b n width

Chromatic dis ersio

Numeric l a erture

Ma ro e din lo s

For aten ation co f ficient an modal b n width, the fami y sp cification contain ran es of

sp cifia le values in te d of fixed l mits The actual values of the maximum aten ation

co ff i ient an minimum modal b n width, at b th 8 0 nm an 1 3 0 nm (or ju t at one of

purp ses, the modal b n width is lne rly normal zed to 1 km

For g idan e purp ses on ban width, Ta le H.1 s ows a n mb r of international y

stan ardised a pl cation s p orted by A1 f ibres, an Ta le H.2 gives a (l mited) n mb r of

f req ently u ed commercial b n width sp cification f or A1a an A1b f ibres

The in icated maximum at en ation values a ply to u ca led o tical f ibres; f or the maximum

ca led at en ation values, referen e is made to IEC 6 7 4-1-1, whic can b u ed in

conju ction with this stan ard

Remark on the sp cif i ation of modal b n width:

Care s ould b taken in writin d al wavelen th b n width sp cification For category A1

f ibres, the b n width at 8 0 nm may b related to the b n width at 1 3 0 nm in a way s own

in Fig re 1, de en in on the ref ractive in ex p rameter, g, (se IEC 6 7 3-2:2 1 , 5.1) The

s aded region u der the c rve of Fig re 1 can b def i ed as the d al win ow are In this

area, region X, Y, an Z are examples of where a f ibre man facturer may c o se to o timise

the proces That is, centre the prod ction at 8 0 nm, 1 3 0 nm, or b twe n these two

wavelen th

Due to this o timisation of the man facturin proces , there wi b combination of b n width

that are not p s ible For example, it is practical y imp s ible to prod ce a f ibre with the

maximum of b th in icated b n width ran es (e.g 8 0 MHz⋅km/1 0 0 MHz⋅km f or A1b

multimode f ibres)

Figure 1 – Relation betwe n ba dwidths at 8 0 nm a d 1 3 0 nm

4.4 Environme tal re uireme ts

En ironmental exp s re tests an me s rement method are doc mented in two f orms:

• Relevant en ironmental at ributes an test proced res are given in Ta le 8

• Me s rements of a p rtic lar mec anical or tran mis ion atribute that may c an e on the

a plcation of the en ironment are lsted in Ta le 9

Table 8 – Environme tal e p s re te ts

Table 9 – At ribute me s re f or e vironme tal te ts

Atrib te Me s reme t meth d

These tests are normal y con u ted p riodical y as typ -tests for a fibre an co tin desig

Unles otherwise in icated, the recovery p riod al owed b twe n the completion of the

en ironmental exp s re an p rf ormin the atribute me s rements s al b as stated in the

p rtic lar en ironmental test method

4.4.2 Me ha ic l e vironme tal re uireme ts (common to al f ibre in c te ory A1)

These tests are, in practice, the most severe requirements amon st the en ironments defined

in Ta le 8

Ta les 10, 1 , an 12 give the pres ription f or strip force, ten i e stren th an stres

cor osion s s e tibi ty resp ctively

4.4.2.2 Strip f orc

The fol owin at ributes s al b verified f olowin removal of the fibre fom the p rtic lar

en ironment

Table 10 – Strip f orc for e vironme tal te ts

En iro me t Av ra e strip f orc (N) Pe k strip forc (N)

The f ol owin atribute s al b verified fol owin removal of the f ibre f rom the en ironment

Table 1 – Te si e stre gth f or e vironme tal te ts

NOT Th s re uireme ts d n t a ply to h rmetic ly c ate f i re

4.4.2.4 Stre s cor osion s s eptibi ty

The fol owin atribute s al b verified fol owin removal of the fibre f rom the en ironment

Table 12 – Stre s cor osion s s eptibi ty f or e vironme tal te ts

En iro me t Stre s c ro io s s e tibi ty c n ta t, nd

Damp h at

≥ 18

NOT This re uireme t d e n t a ply to h rmetic ly c ate fibre

4.4.3 Tra smis ion e vironme tal re uireme ts

Chan e in aten ation fom the initial value s al b les than the values in Ta le 13

Aten ation s al b me s red p riodical y d rin the entire exp s re to e c en ironment

Annex A

(nor mative)

Fami y specifications for A1a multimode fibres

An ex A contain p rtic lar req irements a pl ca le to A1a f ibres Common req irements,

re e ted here f or e se of ref eren e fom the sectional sp cification, are noted by an entry in

the “Referen e” column Relevant notes f om the sectional sp cification are not re e ted but

in icated with a s p rs ript

“S

”

Typ A1a is a 5 /12 µm graded in ex f ibre Thre b n width grades are def i ed as models

A1a.1, A1a.2, an A1a.3 Al thre are sp cified u in over i ed b n width metric , whie

typ s A1a.2 an A1a.3 also a ply diff erential mode delay metric to sp cify two b n width

grades of 8 0 nm laser o timised 5 /12 µm fibres

Eac of these thre b n width grades is also sp cified f or two levels of macro en los

p rorman e that are distin uis ed by “a” or “b” s ff i Those with s ff i “a” (i.e A1a.1a,

A1a.2 an A1a.3 ) are sp cified to me t traditional macro en los p rorman e levels

Those with s ff i “b” (i.e A1a.1b, A1a.2 an A1a.3 ) are sp cified to me t en an ed

macro en los (i.e lower los ) p rf orman e levels

The nomen lature f or the A1a f ami y esta ls es a codin hierarc y that p rmits desig ation

of f ibres with in re sin sp cificity For example, purc ase orders for A1a f ibres may b fi ed

by an of the models sp cif ied in An ex A, whi e purc ase orders f or A1a.2 may b f il ed by

A1a.2 or A1a.2 As a res lt, where sp cification an des ription a ply to al models at

lower hierarc ical levels, only the common ro t is stated

The dimen ional, mec anical an en ironmental req irements are common to al an

sp cified in Ta les A.1 an A.2 The common an distin uis in tran mis ion req irements

are sp cif ied in Ta le A.3

A 2 Dimensional requirements

Ta le A.1 contain dimen ional req irements sp cific to A1a f ibres

Table A.1 – Dime sional re uireme ts spe ific to A1a fibre

A 3 Me ha ical requireme ts

Ta le A.2 contain the mec anical req irements sp cific to A1a fibres

Table A.2 – Me ha ic l re uireme ts spe ific to A1a fibre

Atrib te Unit Limit Refere c

≥ 0,6S

A 4 Tra smission requirements

Ta le A.3 contain tran mis ion req irements sp cif i to A1a f ibres

Table A.3 – Tra smis ion re uireme ts spe ific to A1a fibre

Zero dis ersio slo e, S

⋅km

≤ 0,10b

≤ 0,0 0 3 5 ( 5 0 – λ

0)b

A 5 Environmental re uirements

The req irements of 4.4 s al b met

Annex B

(nor mative)

Fami y specifications for A 1b multimode fibres

An ex B contain p rtic lar req irements a pl ca le to A1b f ibres Common req irements,

re e ted here f or e se of ref eren e fom the sectional sp cification, are noted by an entry in

the “Referen e” column Relevant notes f om the sectional sp cification are not re e ted but

in icated with a s p rs ript

”S

”

Typ A1b fibre is a 6 ,5/12 µm graded in ex fibre

B.2 Dimensional requirements

Ta le B.1 contain dimen ional req irements sp cific to A1b f ibres

Table B.1 – Dime sional re uireme ts spe ific to A1b f ibre

Atrib te Unit Limit Ref ere c

Cla din diameter

Primary c atin diameter – c lo re

B.3 Me ha ical requireme ts

Ta le B.2 contain the mec anical req irements sp cific to A1b fibres

Table B.2 – Me h nic l re uireme ts spe ific to A1b f ibre

Atrib te Unit Limit Refere c

B.4 Tra smission requirements

Ta le B.3 contain tran mis ion req irements sp cif i to A1b f ibres

Table B.3 – Tra smis ion re uireme ts spe ific to A1b f ibre

Atrib te Unit Limit Ref ere c

⋅km

≤ 0,1b

≤ 0,0 1 ( 4 8 – λ

0) b

B.5 Environmental re uirements

The req irements of 4.4 s al b met

Annex C

(nor mative)

Fami y specifications for A 1d multimode fibres

An ex C contain p rtic lar req irements f or A1d fibres Common req irements, re e ted

here for e se of referen e fom the sectional sp cification, are noted by an entry in the

“Referen e” column Relevant notes f om the sectional sp cification are not re e ted but

in icated with a s p rs ript

“S

”

Typ A1d fibre is a 10 /14 µm graded in ex fibre

C.2 Dimensional requirements

Ta le C.1 contain dimen ional req irements sp cif i to A1d fibres

Table C.1 – Dime sional re uireme ts spe ific to A1d f ibre

Primary c atin diameter – c lo re

C.3 Me ha ical requireme ts

Ta le C.2 contain the mec anical req irements sp cific to A1d fibres

Table C.2 – Me h nic l re uireme ts spe ific to A1d f ibre

Atrib te Unit Limit Refere c

≥0,6S

C.4 Tra smission requirements

Ta le C.3 contain tran mis ion req irements sp cific to A1d fibres

Table C.3 – Tra smis ion re uireme ts spe ific to A1d f ibre

Zero dis ersio wa ele gth, λ

Zero dis ersio slo e S

⋅km

≤ 0,10b

≤ 0,0 0 5 ( 5 5 – λ

0) b

C.5 Environmental re uirements

The req irements of 4.4 s al b met

Annex D

(nor mative)

Fibre dif ferential mode delay (DMD) and calculated

effective modal bandwidth (EMBc) requirements

req irements of Clau e E.2

Ref er to An ex E for information regardin ef f ective modal b n width (EMB)

D.1.2 DMD template

A1a.2 fibres s al me t at le st one of the six templates in Ta le D.1, e c of whic in lu es

an in er an outer mas req irement, when me s red ac ordin to IEC 6 7 3-1-4

Table D.1 – DMD template f or A1a.2 fibre

The DMD req irements in D.1.2 are i u trated in Fig re D.1 In this fig re, the al owa le DMD

(as me s red ac ordin to IEC 6 7 3-1-4 ) is ploted vers s the radial of fset p sition of the

sin le mode pro e There is a trade-of f b twe n the tig tnes of the in er mas an the outer

mas to en ure a s f ficient amou t of the b u energ f rom a tran mit er (me tin the lau c

sp cification ) ar ives within the req ired time p riod (defined by the b u rate of the

tran mis ion s stem)

Fig re D.1 – DMD template re uireme ts

The “f lo tin ” c aracteristic of the in er mas is also i u trated in Fig re D.1 In this fig re,

the in er mas (5 µm to 18 µm) may b p sitioned vertical y ( emp ral y) an where within the

outer mas (0 µm to 2 µm) The DMD is more tig tly con trained in the in er mas to al ow

f or lo ser toleran es on the outer mas providin for improved a i ty to man f acture fibre

conformin to this req irement In the case of the 0,3 ps/m mas , the req irement is the

same over the whole ran e f om 0 µm to 2 µm cre tin a “f lat mas

IEC 6 7 3-1-4 can b u ed to en ure a minimum eff ective modal b n width-len th prod ct,

when u in sources me tin a pro riate restriction When the lau c con ition req irements

on the tran miters are coupled to the DMD req irements on the fibre, a b lan e can b

ac ieved b twe n f ibre toleran e an tran mit er toleran e A careful stu y, u in f ibres

contributed by several dif ferent f ibre man facturers an laser tran miters fom several

dif ferent source man f acturers, an in lu in exten ive an detai ed simulation , s ows that

the a ove coupled sp cif i ation on f ibre an sources wi yield a minimum efective modal

b n width-len th prod ct of 2 0 0 MHz⋅km (se Bibl ogra hy)

The u e of a template on the values of DMD ac ieves an ef fective trade-of f b twe n

tran mit er an fibre pro erties The l mitation on the tran mit er en ircled f l x at the 4,5 µm

radiu as ures that very l tle energ is car ied by the lowest order modes of the fibre,

al owin the relaxed toleran e on modal stru ture ex ited at smal radi The l mitation on the

tran mit er en ircled f l x at the 19 µm radiu as ures that very l t le energ is car ied by the

hig est order modes of the fibre, al owin the relaxed toleran e on modal stru ture ex ited at

Table D.2 – DMD interv l ma k for A1a.2 f ibre

These interval mas s s re n out f ibres havin DMD that c an e to ra idly over s ort radial

ran es Fibres p s in this s re n have lower inter s mb l intereren e than those that do

not

D.2 A 1a.2 f ibre EMB

crequireme ts

A1a.2 fibres selected u in the EMB

cmethod s al me t the req irements of D.2.2

D.2.2 Calc late ef fe tiv ba dwidth

The DMD o tical pulse s a es can b weig ted by a set of lau c distribution to determine a

cor esp n in set of EMB

cvalues The minimum EMB

c(minEMB

c) within this set s al me t

the req irement of Eq ation D.1:

is a fibre p rameter a d its v lu ma n t b o timal f or u e in s stem mo els Ref er to

An e E for informatio re ardin th c re p n in s stem p rameter c le th eff ectiv mo al b n width

(EMB)

NOT 2 Refer to An e F for a ditio al e pla atio of b n width n me clature

Weig tin s within Ta le D.3 are provided for DMD me s red at 1µm radial intervals startin

f rom the centre of the core (r = 0) for ten simulated lasers with en ircled flu (EF) metric that

cor esp n to those of ten actual lasers The DMD weig tin s in Ta le D.3 are sp cific to

sources me tin the sp cification of Clau e E.2

Table D.3 – DMD weightings (1 of 2)

A1a.3 fibres selected u in the DMD mas method s al me t the req irements of D.3.2 an

D.3.3 Se Clau e D.1 f or s p ortin information The radial l mits, R

IN ER

UT R, were

esta l s ed for tran miters me tin the req irements of Clau e E.2

Ref er to An ex E for information regardin ef fective modal b n width (EMB)

D.3.2 DMD template

A1a.3 fibres s al me t at le st one of the thre templates in Ta le D.4, e c of whic

in lu es an in er an outer mas req irement, when me s red ac ordin to IEC 6 7 3-1-4

Table D.4 – DMD template f or A1a.3 fibre

A1a.3 f ibres selected u in the EMB

cmethod s al me t the req irements of D.4.2 Se

c (minEMB

c) within this set s al me t

the req irement of Eq ation D.2:

Annex E

(inf or mative)

Modal bandwidth considerations and transmit er requirements

When a multimode fibre is u ed with laser tran miters, the b n width of the combination may

vary widely, de en in on the detai s of the modal stru ture of the lasers, the modal delay

stru ture of the fibre, an the coupl n b twe n the laser an the fibre modes More precisely,

modal b n width is the -3 dB b n width of the impulse resp n e prod ced f rom the modal

delay of a p rtic lar fibre weig ted by the mode p wer distribution ex ited by a p rtic lar

laser

Knowled e of the modal stru ture of a f ibre, as determined by IEC 6 7 3-1-4 , al ows a lower

l mit to b placed on the ran e of b n width whic wi b exp rien ed when u in a given

f ibre with variou laser tran miters

By u in lasers whic couple primari y into modes with wel b u ded delay , minimum modal

b n width can b en ured IEC 612 0-1-4 can b u ed to me s re the lau c con ition of

laser tran miters into multimode fibre [15]

1

Ap ro riately selected lau c con ition

sp cification can restrict the modes of the fibre u ed by the tran mit ers primari y to those

with a pro riately l mited dif ferential mode delay

A minimum modal b n width-len th prod ct can b en ured by combinin a tran mit er

me tin the sp cif i ation in Clau e E.2 b low with a 5 µm fibre me tin the sp cif i ation

in An ex D

E.2 Tra smit er e circled f lux (EF) and centre wavele gth requirements

E.2.1 Encircle f lux

The DMD radial l mits of the in er, outer an interval mas s sp cified in Clau es D.1 an D.3,

an the DMD weig tin s sp cified in Clau es D.2 an D.4, were esta l s ed in conju ction

with the p rtic lar b u ded ran e of laser lau c con ition sp cified in Eq ation E.1 an

E.2 The minimum modal b n width f or lau c con ition outside of this ran e has not b en

determined, but wi b lower than f or lau c con ition within this ran e

The tran mit er lau c con ition p wer distribution s ould me t the req irements of

Eq ation E.1 an E.2 when me s red ac ordin to IEC 612 0-1-4 [15] with the tran miter

coupled into a 5 -µm f ibre me tin the sp cification of this doc ment

E.2.2 Ce tre wa ele gth

Becau e the f ibre’s modal delay c an e with wavelen th, the tran mit er centre wavelen th

s ould b ke t close to the nominal DMD me s rement wavelen th of 8 0 nm to ac ieve the

hig est modal b n width p r orman e over the p pulation of p s in f ibres It may b

a pro riate to de- ate the modal b n width when the tran mit er is not o eratin at

8 0 nm [6] Se TIA TSB-17 f or an i u tration of ban width rol -of for f ibres with b n width

simi ar to fibre type A1a.3 [14]

The laser tran mit er centre wavelen th (λ

c) s ould me t the req irements of Eq ation E.3

Durin the develo ment of f ibre typ A1a.2, a detai ed time-domain Monte-Carlo simulation

weig tin pro osals f or tran mit ers me tin the sp cification of E.2 [1 to 12] The pro osals

were ju ged b sed on their a i ty to p s fibres that did not cau e inter s mb l intereren e

(ISI) to ex e d a sp cif i value more often than a 0,5 % rate [1 ] The sp cif i ISI value was

esta ls ed via the IEEE 8 2.3 e l n bu get spre d he t [13] f or a c an el that in lu ed the

eff ects of tran miter rise time, receiver b n width, an a fibre with 2 0 0 MHz⋅km modal

b n width Th s, throu h the u e of the Monte-Carlo simulation, fibres me tin the

req irements of typ A1a.2 provide a minimum EMB of 2 0 0 MHz⋅km

The minimum EMB value is al g ed with the as umption of the IEEE 8 2.3 e l n bu get

spre d he t Of p rtic lar relevan e is the fact that in the spre d he t the ISI imp irment is

model ed u der Gau sian waveform as umption for the tran miter an f ibre outputs

Ac ordin to the res lts of the Monte-Carlo simulation for f ibres p s in the req irements, the

spre d he t relation hip b twe n ISI an minimum f ibre modal b n width is p s imistic

Therefore, the calc lation of EMB fom weig ted DMD in lu ed a f actor of 1,13 to al g the

fibre req irements develo ed with the time-domain Monte-Carlo simulation with the

spre d he t model as s own in Eq ation E.4

EMB = 1,13 × minimum EMB

c

(E.4)

If other models are u ed, then a diff erent EMB may b a pro riate

Fibres p s in the req irements of Clau es D.3 an D.4 (i.e A1a.3 f ibres) provide a minimum

modal b n width at 8 0 nm that is 2,3 times hig er than the minimum modal b n width of

those p s in the req irements of Clau es D.1 an D.2 (i.e A1a.2 fibres) As s c , their

minimum EMB is also 2,3 times hig er u der the same l n bu get spre d he t as umption

as stated by Equation E.5

Sy tem p rorman e stu ies with actual f ibres an laser sources s p ort this relation hip

[17 to 19]

Annex F

(inf or mative)

Bandwidth nomenclature explanation

Ta le F.1 provides explanation of b n width p rameters that have simi ar names an

a breviation

Table F.1 – Ba dwidth nome clature e pla ation

Parameter n me

a d a bre iatio

Parameter d s riptio

Calculated eff ective mo al ban width

(EMBc)

Th c lc late mo al b n width re ultin fom a p rtic lar

weig tin of a p rtic lar DMD

Minimum c lculated eff ective mo al

ban width (minimum EMBc) or (min EMBc)

Th minimum c lc late mo al b n width re ultin fom a

p rtic lar s t of weig tin s of a p rtic lar DMD

Ef f ective mo al ban width (EMB)

Th mo al b n width th t re ults fom multiplyin th minimum

c lc late ef fe tiv mo al b n width b 1,13 to ariv at a

v lu alg e with th a s mptio s of th IE E 8 2.3 e ln

mo elfor tra smiters c mpla t to Cla s E.2

Annex G

(inf or mative)

Prel minary indications for items needing further study

G.1 Ef f ectiv modal ba dwidth (EMB) at 1 300 nm

Chromatic disp rsion pro erties al ow DMD me s red at one wavelen th to b tran formed to

DMD at another wavelen th Th s, 8 0 nm DMD may b u ed to predict minimum ef fective

modal b n width-len th prod ct at 1 3 0 nm Prel minary en ine rin analy is in icates that

f ibres me tin the req irements of An ex D for ≥ 2 0 0 MHz⋅km EMB at 8 0 nm wi also

provide ≥ 5 0 MHz⋅km EMB at 1 3 0 nm

Some 1 3 0 nm laser b sed tran miters are def i ed to o erate into b th multimode fibre an

sin le mode f ibre In order to provide b t er as uran e that multimode f ibres, with b n width

p rorman e sp cif ied only on the b sis of over i ed lau c con ition , del ver at le st their

minimum over i ed b n width-len th prod ct f or 1 3 0 nm tran miters desig ed to lau c

into sin le mode fibre (e.g 10 0BASE-LX), IEEE 8 2.3 sp cif ies the u e of of fset-lau c

mode-con itionin p tc cord when con ectin s c tran mit ers to this typ of multimode

f ibre

The of fset-lau c is implemented by joinin a sin le mode f ibre to a multimode fibre within the

p tc cord u in a sp cified ran e of sin le mode-to-multimode radial of fset By lau c in

sig if i antly of centre fom the sin le mode fibre into the multimode f ibre, man modes are

ex ited that prod ce a mode p wer distribution closer to that of an over i ed lau c than that

of the native lau c , whic typical y stron ly ex ites only low-order modes

Becau e overf iled-lau c b n width me s rements are he vi y dominated by hig -order

mode b haviour, they are in en itive to the b haviour of low-order modes Therefore, by

avoidin stron ex itation of the low-order modes, the of fset-lau c p tc cord el minates

de en en e on the b haviour of these p orly-c aracterized modes, an improves the

cor elation b twe n minimum s stem b n width an the overf iled lau c b n width-len th

me s rement

However, b cau e the DMD test proced re do s me s re low-order mode b haviour, it is

ca a le of b u din the lower l mit of b n width-distan e prod ct for the native lau c es of

these 1 3 0 nm tran mit ers Fibres me tin A1a.2 an A1a.3 sp cification are o timised for

p ak b n width at 8 0 nm, an have sp cifical y l mited low-order mode DMD

Op ratin at wavelen th dif ferent f rom the p ak wavelen th introd ces a s stematic

in re se in DMD The largest in re se in DMD oc urs for the hig est order modes Th s the

over i ed b n width, whic is dominated by hig -order mode DMD, is a con ervative in icator

of lowest eff ective modal b n width f or native 1 3 0 nm lau c es that con entrate p wer in

the low order modes Therefore, A1a.2 an A1a.3 fibres are exp cted to provide EMB at le st

as hig as their 5 0 MHz⋅km minimum over i ed b n width-len th prod ct at 1 3 0 nm

without the u e of mode con itionin p tc cord

G.2 Sc l ng of EMB with DMD

Dif ferent eff ective modal b n width-len th prod cts can b derived fom the templates an

interval mas s defined in Clau es D.1 an D.3 simply by s alng EMB in in erse pro ortion to

DMD temp ral width, provided the f ol owin thre con ition are met:

1) the fibre is u ed with tran miters me tin the sp cification in Clau e E.2,

2) the radial of fset l mits of the templates are not c an ed, an

3) the overi ed modal b n width-len th prod ct req irements are s aled in direct pro ortion

to the EMB

This s al n a i ty is s bstantiated by the fol owin relation hips From the waveg ide the ry,

the mode p wer distribution of the tran miter relates directly to the radial extents of the in er

an outer DMD mas s The o eratin wavelen th ran e con train o eration in close

proximity to the nominal DMD me s rement wavelen th to minimise modal b n width

c an es d e to wavelen th With the mode p wer distribution an the radial extent of the

DMD mas s fixed, an the o eratin wavelen th ran e u c an ed, s al n is s p orted by

the in erse pro ortional ty b twe n rms pulse width an b n width

2

In this case the rms

pulse width eq ates to the DMD temp ral width Scal n the overi ed b n width in direct

pro ortion to the desired EMB maintain the esta ls ed pro ortional ty b twe n the DMD an

over i ed b n width

For example, an ef fective modal b n width-len th prod ct at 85 nm of ≥ 1 0 0 MHz⋅km (on

e-half of 2 0 0 MHz⋅km) can b provided with f ibre me tin an of the six DMD templates given

in Clau e D.1, e c with double the DMD temp ral width in b th the in er an outer mas s,

an an over i ed b n width-len th prod ct of ≥ 7 0 MHz⋅km

Annex H

(inf or mative)

Appl cations supported by A 1 fibres

H.1 International y sta dardised appl c tions

Ta le H.1 s ows variou international y stan ardised a pl cation , as wel as other

recommen ed a pl cation , whic are s p orted by A1 f ibres an whic may b sp cif ied

throu h this stan ard It is not an ex au tive l st, an man other a pl cation not sp cifical y

4 GBA SE-SR4

H.2 Used commercial ba dwidth spe if ications

Ta le H.2 s ows some f req ently u ed commercial b n width sp cification f or A1a an A1b

f ibres This l st is not ex au tive an man other sp cification not l sted here may b u ed in

the market

Table H.2 – Typic l y u e commercial ba dwidth spe if ic tions

f or A1a a d A1b gra e -inde multimode f ibre

Fibre

ty e

Minimummo al b n width

f or OFLa

EMB = Ef f ective mo al ban width (s e A nnexe D, E, F an G)

H.3 Cross ref ere ce of f ibre types in this standard a d ISO/IEC 11801

This stan ard sp cifies fibre typ s A1a.1 an A1b with a sp cific core ac ordin to

ISO/IEC 1 8 1 sp cif ied ca led o tical f ibre p rf orman e categories OM1 an OM2 with a

ran e of core diameters an a sp cific b n width cel The req irements f or fibre typ A1a.2

contained in this stan ard an the ISO/IEC 1 8 1 req irements f or OM3 are identical The

req irements for fibre typ A1a.3 contained in this stan ard an the ISO/IEC 1 8 1

req irements for OM4 are exp cted to b identical when ISO/IEC 1 8 1 is updated The

cros referen e is given in Ta le H.3

Table H.3 – Cros refere c betwe n this sta dard a d ISO/IEC 1 8 1

Annex I

(inf or mative)

1-Gigabit, 10-Gigabit, 40-Gigabit and 100-Gigabit Ethernet appl cations

An ex I is inten ed to outl ne a s mmary of category A1a an A1b f ibre req irements an

related tran mis ion ca a i ties f or the 1-Giga it, 10-Giga it, 4 -Giga it, an 10 -Giga it

Ethernet a pl cation stan ard in develo ment within IEEE 8 2.3 Al the Ethernet

a pl cation at 1 Gb/s or hig er are con idered as “laser lau c ” a plcation

Ta le I 1 s ows a s mmary of 1 Gb/s, 10 Gb/s, 4 Gb/s an 10 Gb/s Ethernet req irements

an ca a i ties The rows of Ta le I 1 are group d by fibre typ an bit rate For e c l ne

item, there is an in ication of the a plcation l n len th an the req irements on tran mit er

lau c c aracteristic The req irements of the tran mit er lau c c aracteristic are of thre

typ s:

• Of fset-lau c mode-con itionin p tc cord f or 1 3 0 nm o eration , defined in

IEEE 8 2.3

• Coupled p wer ratio (CPR) > 9 dB an avoidan e of radial overi ed lau c (ROFL) f or

1 Gb/s 8 0 nm o eration on fibres c aracterised solely by over i ed lau c (OFL)

b n width CPR is def i ed in IEC 612 0-4-1, ROFL is def i ed in IEEE 8 2.3

• En ircled Flu (EF) req irements for 10 Gb/s, 4 Gb/s an 10 Gb/s 8 0 nm o eration on

f ibre typ s A1a.2 an A1a.3 with eff ective modal b n width en ured by DMD

me s rement The EF req irements are: EF at 4,5 µm radiu ≤ 3 % an EF at 19,0 µm

radiu ≥ 8 % F r EF me s rements se IEC 612 0-1-4