Title page for etd-0628111-161637


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URN etd-0628111-161637
Author Hsin-Min Wang
Author's Email Address No Public.
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Department Electro-Optical Engineering
Year 2010
Semester 2
Degree Ph.D.
Type of Document
Language English
Title Study on WDM Lightwave Systems for the Access Application and Transoceanic Application
Date of Defense 2011-06-22
Page Count 121
Keyword
  • cross-phase modulation
  • nonlinear phase noise
  • four-wave mixing
  • self-phase modulation
  • Abstract  The wavelength-division multiplexing (WDM) is a well know technique capable of increasing the total capacity of a lightwave communication system; however, the system performance can be significantly limited by the dispersive and nonlinear effects, among others. This dissertation is mainly focused on the nonlinear effects upon the short-haul and long-haul lightwave systems.The short-haul lightwave system is mainly adopted in the access network. A passive optical access network is generally used to connect individual homes to a central office of a local area, and since there is no active component installed outside the central office of the passive optical access network, the system complexity and maintenance frequency can be significantly reduced. This dissertation provides a long-reach passive optical network (LR-PON) which can further reduce the system complexity and system cost. We found that four-wave mixing (FWM) and Rayleigh backscattering induced crosstalk were two main reasons to degrade the transmission performance in our proposed LR-PON.
     The long-haul lightwave system is mainly adopted in the transoceanic application. Although differential phase-shit keying (DPSK) modulation format has been confirmed to be suitable for long-haul WDM system, we found that a performance dip can be observed near the system zero dispersion avelength. In this dissertation, we designed various experiments to confirm the nonlinear effect to cause the performance dip being observed, and concluded that self-phase modulation (SPM) was the dominant reason to cause the performance dip rather than cross-phase modulation (XPM) or nonlinear phase noise.
    Advisory Committee
  • Hung-Wen Chang - chair
  • Chin-Ping Yu - co-chair
  • Cheng-Mu Tsai - co-chair
  • Wood-Hi Cheng - co-chair
  • Jye-Hong Chen - co-chair
  • Kai-Ming Feng - co-chair
  • Hidenori Taga - advisor
  • Files
  • etd-0628111-161637.pdf
  • indicate in-campus access in a year and off_campus not accessible
    Date of Submission 2011-06-28

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