A Novel Remodulation Scheme for WDM PONs Using DPSK for Both Downstream and Upstream

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dc.contributor.authorDeb, Nebras
dc.date.accessioned2012-05-09T08:26:36Z
dc.date.available2012-05-09T08:26:36Z
dc.date.created2012
dc.date.issued2012
dc.identifier.urihttp://hdl.handle.net/10393/22847
dc.identifier.urihttp://dx.doi.org/10.20381/ruor-5770
dc.description.abstractWavelength Division Multiplexing Passive Optical Networks (WDM PONs) offer a great solution to satisfy the increasing demand of bandwidth. In addition, it offers a higher level of data security through virtual point to point connections. A great challenge in realizing cost-effective WDM PON is the need for a transmitter at each Optical Network Unit (ONU) with a dedicated wavelength, which overloads the total cost of the system, in addition to reducing the number of available wavelengths in the system. Remodulation scheme is an ultimate solution for these problems of WDM PONs as the downstream signal itself is remodulated with upstream data which saves the need for a laser source at the ONU side. In this thesis I propose and experimentally demonstrate a novel wavelength remodulation scheme for WDM PONs that employs Differential Phase Shift Keying (DPSK) for downstream and Return to Zero DPSK (RZ-DPSK) for upstream. The use of DPSK enhanced the system with improved receiver sensitivity and RZ-DPSK improved the tolerance toward chromatic dispersion. In addition, I investigate the Backreflection (BR) penalty resulting from beat noise of BRs with upstream signal in a bidirectional WDM PON system that uses remodulation and phase modulation as a modulation format. I experimentally demonstrate the optimal conditions to operate the system and minimize the BR penalty.
dc.language.isoen
dc.publisherUniversité d'Ottawa / University of Ottawa
dc.subjectWDM PONs
dc.subjectPhase modulation
dc.subjectOptical Communications
dc.subjectFiber Optic
dc.subjectRemodulation
dc.subjectDPSK
dc.subjectBackreflection
dc.titleA Novel Remodulation Scheme for WDM PONs Using DPSK for Both Downstream and Upstream
dc.typeThesis
dc.faculty.departmentScience informatique et génie électrique / Electrical Engineering and Computer Science
dc.contributor.supervisorAnis, Hanan
dc.embargo.termsimmediate
dc.degree.nameMASc
dc.degree.levelmasters
dc.degree.disciplineGénie / Engineering
thesis.degree.nameMASc
thesis.degree.levelMasters
thesis.degree.disciplineGénie / Engineering
uottawa.departmentScience informatique et génie électrique / Electrical Engineering and Computer Science
CollectionThèses, 2011 - // Theses, 2011 -

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