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Thesis. / Includes vita. Includes bibliographical references (leaves 128-134)

Thesis (Ph.D.)--University of Nebraska-Lincoln, 2006. / Title from title screen (site viewed on Jan 23, 2007). PDF text: 303 p. : ill. (some col.) ; 2.13Mb. UMI publication number: AAT 3216338. Includes bibliographical references. Also available in microfilm and microfiche format.

Thesis (Ph.D.)--University of Texas at Dallas, 2007. / Includes vita. Includes bibliographical references (leaves129-138)

Thesis (M.S.)--Montana State University--Bozeman, 2009. / Typescript. Chairperson, Graduate Committee: Richard Wolff. Includes bibliographical references (leaves 74-76).

M.Ing. / In this dissertation the emphasis falls on the use of the 1550 run WDM systems that make use of standard single-mode fibre. The reason for this is that more than 50 million kilometres of standard telecommunication fibre is already installed in the worldwide telephone network. Therefore, from an economical point of view, the fourth generation of lightwave systems has to make use of this existing base. Using single-mode fibre at high bit-rate (- 10 Gb/s) dispersion becomes a problem. Furthermore, if amplifiers are used, as in the case of long-haul WDM systems, non-linear effects also become important although the input power levels are low (-1 mW). Thus, the system performance is influenced by both the dispersion problem and fibre non-linearities. In this dissertation the influence of these effects was investigated and the use of different dispersion management schemes was considered in order to minimise the dispersion and the effects of these non-linearities on the optical signals. It was seen that by using pre-compensation, the optical pulses would become narrower whereas by using post-compensation, the pulses would be broader than the original input pulses. Thus, the combined effect of fibre non-linearity and fibre dispersion led to the fact that the order in which dispersion compensation is realised is important. By using symmetrical dispersion compensation that is defined as a dispersion compensation scheme that makes use of an equal amount of pre- and post-compensation sections, the tendency of pulse narrowing and pulse broadening can be balanced. It was found from simulations, that pre-compensation led to a smaller SPM penalty than postcompensation, whereas in the case of cross-phase ,modulation, the opposite is true. Using lumped dispersion compensation at the,en(f:o£ the system, it was found that both SPM and XPM penalties could be minimised. It was found that negative and positive lumped dispersion compensation could be used to improve the system perfortriance of pre- and post compensation schemes respectively. The performance of symmetrical compensation also improved by using a positive lumped dispersion compensation regarding SPM penalty, but in the case of XPM penalty, it was found that lumped dispersion compensation could not be used to improve this penalty. Furthermore, the effect of not using 100% dispersion compensation per span on the system performance was determined. From simulations, it followed that under-compensation will lead to an improvement in the system performances of the post- and symmetrical dispersion compensation, whereas an over-compensation will lead to an improvement in the precompensation case. It was also shown that XPM index penalty decreases in all of these dispersion compensation schemes if 100% compensation per span is not used. The reason for this is the inter -span walk-off that reduces the XPM distortion by reducing the localised buildup of phase distortions. Finally, it was shown that by independently controlling the input power levels in the SMF and DCF the best system performance is possible. Furthermore, by making use of lumped dispersion compensation or by not using 100% dispersion compensation per span, the system performance of the pre-, post- and symmetrical dispersion conipensation schemes can be improved quite a lot. Comparing the results of the pre-, post- and symmetrical dispersion compensation schemes that made use of independent control of power levels with the pre-, post- and symmetrical dispersion compensation schemes that did not use independent control ofpower levels, the Q factors were improved from 6.2 to 8, from 5.4 to 9 and from 7.5 to 11 in each case respectively.

Zhang Bo. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2006. / Includes bibliographical references (leaves 55-59). / Abstracts in English and Chinese. / Chapter Chapter 1 --- Introduction to Passive Optical Networks --- p.1 / Chapter 1.1 --- Passive Optical Network (PON) --- p.2 / Chapter 1.1.1 --- PON architecture --- p.3 / Chapter 1.1.2 --- PON benefits --- p.4 / Chapter 1.2 --- The History of PON --- p.4 / Chapter 1.3 --- WDM-PON --- p.5 / Chapter 1.4 --- Outline of This Thesis --- p.8 / Chapter Chapter 2 --- Previous Schemes for Colorless ONU Operation in WDM-PON --- p.9 / Chapter 2.1 --- Introduction --- p.10 / Chapter 2.2 --- Previous WDM-PON Architectures for Colorless ONU Operation --- p.10 / Chapter 2.2.1 --- Spectrum slicing BLS employed at the ONU --- p.11 / Chapter 2.2.2 --- Centralized broadband light source (BLS) for upstream optical carrier supply --- p.12 / Chapter 2.2.3 --- Reuse of the downstream carrier at the ONU --- p.17 / Chapter 2.3 --- Summary --- p.21 / Chapter Chapter 3 --- WDM-PON with a Centralized Supercontinuum Broadband Light Source for Colorless ONUs --- p.23 / Chapter 3.1 --- Introduction --- p.24 / Chapter 3.1.1 --- Introduction to Supercontinuum Generation --- p.24 / Chapter 3.1.2 --- Introduction to Photonic Crystal Fibers --- p.25 / Chapter 3.1.3 --- Supercontinuum Generation in a Photonic Crystal Fiber --- p.27 / Chapter 3.2 --- WDM-PON with Centralized Supercontinuum Broadband Light Source --- p.27 / Chapter 3.2.1 --- Motivation --- p.27 / Chapter 3.2.2 --- Proposed access network --- p.28 / Chapter 3.2.3 --- Experimental demonstration and results --- p.30 / Chapter 3.2.4 --- Discussions --- p.32 / Chapter 3.2.5 --- Conclusion --- p.34 / Chapter 3.3 --- Broadcast Signal Delivery over a WDM-PON based on Supercontinuum Generation --- p.34 / Chapter 3.3.1 --- Motivation --- p.34 / Chapter 3.3.2 --- Proposed network architecture --- p.35 / Chapter 3.3.3 --- Experiment results and discussions --- p.36 / Chapter 3.3.4 --- Conclusion --- p.38 / Chapter 3.4 --- Summary --- p.38 / Chapter Chapter 4 --- A Survivable WDM-PON with Colorless Optical Network Units --- p.39 / Chapter 4.1 --- Introduction --- p.40 / Chapter 4.2 --- Previous Protection Schemes --- p.40 / Chapter 4.3 --- A Survivable WDM-PON with Centralized BLS --- p.44 / Chapter 4.3.1 --- Network topology and wavelength assignment --- p.45 / Chapter 4.3.2 --- Protection operation principles --- p.46 / Chapter 4.3.3 --- Experimental results --- p.47 / Chapter 4.4 --- Summary --- p.48 / Chapter Chapter 5 --- Summary and Future Work --- p.50 / Chapter 5.1 --- Summary of the Thesis --- p.51 / Chapter 5.2 --- Future Work --- p.52 / LIST OF PUBLICATIONS --- p.54 / REFERENCES --- p.55

Sun Xiaofeng. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2006. / Includes bibliographical references (leaves 61-64). / Abstracts in English and Chinese. / Chapter CHAPTER 1 --- INTRODUCTION --- p.1 / Chapter 1.1 --- Optical network evolution --- p.2 / Chapter 1.1.1 --- Submarine and terrestrial long-haul fibre systems --- p.2 / Chapter 1.1.2 --- Metropolitan networks --- p.3 / Chapter 1.1.3 --- Access networks --- p.4 / Chapter 1.2 --- Motivation of this thesis --- p.6 / Chapter 1.3 --- Outline of this thesis --- p.7 / Chapter CHAPTER 2 --- PREVIOUS SELF-HEALING NETWORK ARCHITECTURES --- p.9 / Chapter 2.1 --- Introduction --- p.10 / Chapter 2.1.1 --- Previous protection architectures for access networks --- p.10 / Chapter 2.1.2 --- Previous protection architectures for metro access networks --- p.13 / Chapter 2.3 --- Previous protection architectures for metro backbone networks --- p.15 / Chapter 2.3.1 --- Unidirectional path-switched rings (UPSR) --- p.15 / Chapter 2.3.2 --- Bidirectional line-switched rings (BLSR) --- p.16 / Chapter 2.3.3 --- Ring interconnection and dual homing --- p.17 / Chapter 2.4 --- Summary --- p.19 / Chapter CHAPTER 3 --- SELF-HEALING NETWORK ARCHITECTURE FOR WDM OPTICAL ACCESS NETWORKS --- p.20 / Chapter 3.1 --- Introduction --- p.21 / Chapter 3.2 --- Star-Ring Protection Architecture (SRPA) --- p.21 / Chapter 3.2.1 --- Motivation --- p.21 / Chapter 3.2.2 --- Network topology of SRPA --- p.22 / Chapter 3.2.3 --- Wavelength assignment of SRPA --- p.22 / Chapter 3.2.4 --- Structure of ONU --- p.23 / Chapter 3.2.5 --- Protection mechanism --- p.25 / Chapter 3.2.6 --- Experimental demonstration --- p.26 / Chapter 3.2.7 --- Power budget --- p.28 / Chapter 3.2.8 --- Summary --- p.28 / Chapter 3.3 --- Duplicated-Tree Protection Architecture (DTPA) --- p.28 / Chapter 3.3.1 --- Motivation --- p.28 / Chapter 3.3.2 --- Network topology and wavelength assignment --- p.29 / Chapter 3.3.3 --- Structure of OLT --- p.30 / Chapter 3.3.4 --- Protection mechanism --- p.31 / Chapter 3.3.5 --- Experimental demonstration --- p.33 / Chapter 1.1.1 --- Summary --- p.34 / Chapter 1.4 --- Summary --- p.35 / Chapter CHAPTER 4 --- SINGLE-FIBER SELF-HEALING WDM RING NETWORK ARCHITECTURE FOR METRO ACCESS NETWORKS --- p.36 / Chapter 4.1 --- Introduction --- p.37 / Chapter 4.2 --- Network architecture and wavelength assignment --- p.37 / Chapter 4.3 --- Structure of access node --- p.39 / Chapter 4.4 --- Structure of hub node --- p.40 / Chapter 4.5 --- Protection mechanism --- p.42 / Chapter 4.6 --- Experimental demonstration --- p.43 / Chapter 4.7 --- Optimization of access node --- p.47 / Chapter 4.8 --- Scalability --- p.48 / Chapter 4.9 --- Summary --- p.49 / Chapter CHAPTER 5 --- SELF-HEALING WDM MESH NETWORK ARCHITECTURE FOR METRO BACKBONE NETWORKS… --- p.50 / Chapter 5.1 --- Introduction --- p.51 / Chapter 5.2 --- Network architecture and node structure --- p.51 / Chapter 5.3 --- Protection mechanism --- p.53 / Chapter 5.4 --- Experimental demonstration --- p.55 / Chapter 5.5 --- Summary --- p.57 / Chapter CHAPTER 6 --- SUMMARYAND FUTURE WORKS --- p.58 / Chapter 6.1 --- Summary of the Thesis --- p.59 / Chapter 6.2 --- Future Works --- p.59 / LIST OF PUBLICATIONS --- p.61 / REFERENCES --- p.62

Thesis (Ph.D.)--University of Nebraska-Lincoln, 2009. / Title from title screen (site viewed October 15, 2009). PDF text: xx, 160 p. : ill. (some col.) ; 1 Mb. UMI publication number: AAT 3360160. Includes bibliographical references. Also available in microfilm and microfiche formats.

Thesis (Ph. D.)--University of Texas at Austin, 2001. / Vita. Includes bibliographical references. Available also from UMI/Dissertation Abstracts International.