fluidic optical devices based on thermal lens effect

... shifters using nonlinear directional couplers Trang 51 As mentioned above, the structure of an all optical switching requires two nonlinear directional couplers based on the Kerr effect [12] as ... shifters using nonlinear directional couplers, the control signal is at an arm of the nonlinear directional coupler, and the information signal is at the other arm The nonlinear directional couplers ... output power on the variation of width and length of MMI regions in all operation states of the proposed switch: a) the variation of the width and b) the variation of the length IV CONCLUSIONS A novel

Ngày tải lên: 12/12/2017, 10:45

... addition, the reported sensors can be capable of determining only one chemical or biological element The sensing structures based on one microring resonator or Mach Zender interferometer can only ... silicon waveguides can be used for reducing the thermal drift 3 Optical biosensor based on two microring resonators A schematic of the structure is shown in Fig 8 The proposed structure contains one ... resonance The operation of the sensor using microring resonators is based on the shift of resonance wavelength A small change in the effective index neff will result in a change in the resonance

Ngày tải lên: 25/01/2021, 05:49

... solutions with concentrations of 0 %, 0.2 % and 0.4 % and Ethanol concentrations of 0 %, 3 % and 6 % are induced to the device The resonance wavelength shifts corresponding to the concentrations ... some highly sensitive resonator sensors based on polymer and silicon microring and disk resonators have been developed [11-14] However, multichannel sensors based on silicon waveguides and MMI structures, ... higher order than that of the recent conventional sensor based on single microring resonator [31, 33] For each 3 % increment of the ethanol concentration, the resonance wavelength shifts of about

Ngày tải lên: 29/01/2021, 10:44

... solutions with concentrations of 0 %, 0.2 % and 0.4 % and Ethanol concentrations of 0 %, 3 % and 6 % are induced to the device The resonance wavelength shifts corresponding to the concentrations ... some highly sensitive resonator sensors based on polymer and silicon microring and disk resonators have been developed [11-14] However, multichannel sensors based on silicon waveguides and MMI structures, ... higher order than that of the recent conventional sensor based on single microring resonator [31, 33] For each 3 % increment of the ethanol concentration, the resonance wavelength shifts of about

Ngày tải lên: 17/03/2021, 17:32

... addition, the reported sensors can be capable of determining only one chemical or biological element The sensing structures based on one microring resonator or Mach Zender interferometer can only ... glucose concentration, the resonance wavelength shifts of about 800nm is achieved This is a double higher order than that of the recent conventional sensor based on single microring resonator [27, ... Based on Intensity Detection," IEEE Journal of Quantum Electronics, vol 44, pp 100-107, 2008 [7] V M Passaro, F Dell’Olio, and F Leonardis, "Ammonia Optical Sensing by Microring Resonators,"

Ngày tải lên: 18/03/2021, 10:37

... provide valuable reconfigurable interconnecting functions needed by optical cross-connect (OXC) and by fiber-optic subscribe line cross-connections in optical communications systems The MEMS ... [8] Additionally, the high nonlinearity enables compact components with the potential for monolithic integration, owing to its large nonlinear coefficient n2 and low two-photon absorption (good ... A 1x3 all optical switching based on a 1x3 MMI and a 3x3 couplers using directional couplers as phase shifters 2.2 Operation principle of the 1x3 all optical switch The configuration of the

Ngày tải lên: 19/03/2021, 17:39

... a strong focus on interrogation approaches based on intensity variation in transmission and reflection The potential applications involving structural health monitoring, medicine, environment ... rather to focus on more simple and low-cost interrogation approaches based on intensity variation measurement techniques in transmission and reflection Some brief considerations about other sensing ... addition, FBGs and interferometry will also be briefly described due to its increasing application Trang 63.1 Sensors Based on Intensity Variation Detection Sensors based on intensity variation

Ngày tải lên: 21/03/2023, 14:46

... switches provide valnabie scconfigurahle interconnecting functions needed by optical crass- connec, (OXC) and by fiber-oplic subscribe line connechons m oplical communications systems The MEMS switches ... all-optical switches based on multimode interference couplers using nonlinear directional couplers Where = 8+ (i-i)(6- ji) if iej even Coupler Figure 1 A 1x3 all optical switching based on ... propagation method (BPM) are used for desiguing and optimizing the device structure Keywords: All optical switch, MMI conpler, nonlinear directional coupler, phase shifter 1 IN[RODLCTION Optical

Ngày tải lên: 01/06/2025, 04:58

... PEDOT:PSS, PFE, and BNDI 2.4 Sample Preparation for Optical Investigation Lams were ultrasonically cleaned in detergent solution, deionized water, and acetone for 15 min each and blow-dried with nitrogen ... may conclude that annealing temperatures applied over the crystallization temperature of the major component of the blend deteriorate not only the responsivity but also the long-term operation ... characteristics of devices are shown in Figures12(a)and12(b) Photocurrent densities of devices are recorded for every 10 seconds when the UV light is on and off For the first two UV-on cycles of the devices

Ngày tải lên: 02/11/2022, 11:37

... Conj.: Additive Conjunction Adver Conj: Adversative Conjunction Cau Conj.: Causal Conjunction Temp Conj.: Temporal Conjunction Trang 7LIST OF TABLES AND FIGURES Table 2.1: Type of Cohesion ... composed by selection vocabulary and lexical cohesion is part of cohesion that concerns with connection word used Based on Halliday and Hasan explanation, they divide the lexical cohesion into two categories, ... affairs: information is conveyed, intentions made clear, its linguistic product is Text.” (1984: 100) 2.2.2 Concepts of Cohesion Cohesion based on Halliday and Hasan (1976) “cohesion theory as the

Ngày tải lên: 17/09/2019, 23:21

... questionnaire appropriately After good consideration, 40 question items (written in English) were added to thequestionnaire and in two sections The first section consisted of 2 questions which ... definition, benefits, roles and issues for the implementation ofproject-based learning 2 The aims of the study The research focuses on investigating project based learning and its effect on uppersecondary ... information about teaching experience and knowledge of project-based learning The second section contained the remaining 38 questions The first of which asked aboutthe definition of project-based

Ngày tải lên: 04/12/2019, 09:07

... mode controller and a conventional PID controller The simulation result illustrated the effectiveness of the proposed controller. Keywords Electro-Optical Tracking System; Sliding- Mode Control; ... sliding mode controller (has the fast response and good quality control) The paper is composed of five sections After this introduction, in the second section, the equation of the gimbal motion is presented ... section presents the steps to design the proposed controller The simulation results present in the fourth section and the last section contains the concluding remarks 2 EQUATIONS OF GIMBAL MOTION

Ngày tải lên: 10/02/2020, 03:39

... semiconductor -based all -optical switches include semiconductor optical amplifier (SOA) and more recently silicon photonics Implementation of ultrafast silicon photonic switch is largely based on ... device configurations, among which semiconductor -based all -optical processing devices have substantial interests due to the capability of realizing alloptical processing and optical interconnects ... 7.1.4 Pros and Cons with Thin-Film EUPT Based on QWI Approach 130 7.2 EUPT Based on III-V -on- Silicon Integrated Platform .131 7.2.1 Introduction to Direct Wafer Bonding 132...

Ngày tải lên: 09/09/2015, 08:14

... 2.4 Discussion 52 III 2.5 Conclusion Reference 57 59 CHAPTER Non-Volatile Flash Memory Devices based on Copolymer Containing Carbazole Units and Europium Complex 62 3.1 Introduction 62 3.2 Experiment ... Metal Electrode 4.4 Conclusion 104 105 Reference 107 CHAPTER Conclusions 109 5.1 Conclusions 109 5.2 Limitations 112 5.3 Suggestions for Future Work 113 APPENDIX: List of Publications 115 V ABSTRACT ... phase, conformation, in response to the applied electric field The technologies based on organic materials are still at the conceptual and experimental levels, while some of those based on inorganic...

Ngày tải lên: 12/09/2015, 11:29

... research reports of sonication effects on nanofluid properties are limited in the open literature In this work, sonication effects on thermal conductivity and viscosity of carbon nanotubes (0.5 ... ultrasonication time effects on sediment and the thermal conductivity of the carbon nanotubeethylene glycol nanofluids and found that thermal conductivity of the nanofluids increased with sonication ... [18] explored the sonication energy/time impact on thermal conductivity of nanotube-oil suspensions and observed a decreased thermal conductivity with an increasing sonication energy/time They...

Ngày tải lên: 21/06/2014, 17:20

... the attention was focused on localization techniques based on active devices transmitting beacon-like signals In this paper, we present a novel localization system based on passive devices of ... the layout of the devices is unique.3 LOCALIZATION BASED ON PASSIVE DEVICES In this section, we evaluate the performance of the proposed localization network based on passive devices densely scattered ... density (devices per m2 ) 2.66 2.66 Less than responding devices responding devices responding devices or more responding devices 0.5 m 1m in accordance to a uniform spatial distribution Finally,...

Ngày tải lên: 22/06/2014, 23:20

... rotational motion consists of many higher-order sideband components These higher-order sideband components are a consequence of phase modulation from a temporally fluctuating target motion and ... distortion of a target due to a timevarying rotational motion It would also be instructive to show that the ISAR distortion effect is a result of a time-dependent rotational motion EURASIP Journal on ... possess pitch, roll, and yaw motions simultaneously, in addition to a translational motion at any given instant of time These motions all contribute to a resultant rotation of the target with respect...

Ngày tải lên: 22/06/2014, 23:20

... adverse events, and the effect of resistance on the mixture of drugs in subsequent regimens interact and may affect long term cost and consequences Conclusions Based on the assumptions made in the model, ... 49 Simpson et al Cost Effectiveness and Resource Allocation 2011, 9:5 http://www.resource-allocation.com/content/9/1/5 Page of 10 Table Cost, Consequences per 100 Patients, and Cost Effectiveness ... regimen depends on the cost assumptions used in the model, the effects of different model assumptions with regards to the second and third ARV regimens to which the population was switched once the...

Ngày tải lên: 13/08/2014, 11:22

... aforementioned reasons, the researcher decided to start an action research project named “The effects of teacher’s differentiated instructions based on students’ learning styles on their motivation: ... 2013 DECLARATION I hereby certify that this research entitled “The effects of teacher’s differentiated instructions based on students’ learning styles on their motivation” was conducted and then ... instructions carefully.” Multiple directions are needed, but delivering it to the whole class at one time may cause confusion or attention deficiency Some other options such as tape-recorded directions,...

Ngày tải lên: 28/02/2015, 11:54

... direction or purpose to behavior, (c) continue to allow behavior to persist, and (d) lead to choosing or preferring a particular behavior.” b Motivation model - Components of motivation Based on ... which should be responded on the 5-point Likert scale ranging “strong disagree to strongly agree” Some questions were repeated to increase the internal consistency of the questionnaire after being ... Based on Gardner’s construct and these studies, Dörnyei has integrated all the components into one construct with three components specifically as follows: Figure 5: Components of foreign language...

Ngày tải lên: 13/04/2015, 16:43