Performance analysis and testbed demonstration of long-haul point-to-point transmission systems based on DWDM technology.
Item
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Title
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Performance analysis and testbed demonstration of long-haul point-to-point transmission systems based on DWDM technology.
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Identifier
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AAI9908346
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identifier
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9908346
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Creator
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Mendez, Maria Fernanda.
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Contributor
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Adviser: Mohamed Ali
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Date
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1998
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Language
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English
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Publisher
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City University of New York.
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Subject
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Engineering, Electronics and Electrical | Physics, Optics
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Abstract
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This thesis examines the technological requirements and assesses the performance analysis and feasibility for implementing ultra-high bit-rate long-haul point-to-point transmission system based on Dense Wavelength-Division Multiplexing (DWDM) technology.;To realize an ultra-high speed long-haul DWDM transmission system, two key technological issues, that are the focus of this thesis, must be addressed: (1) Novel architectures that offer a possible route to ultra-broad band amplifiers capable of providing 60-80 nm of optical bandwidth based on erbium-doped silica fiber must be developed.;This work develops and demonstrates several novel two-band EDFA configurations capable of providing as large as 80-nm of optical bandwidth using only silica-based EDFAs. Such configurations offer a practical route to removing the bandwidth limits which currently constrain the design of flexible WDM systems and networks.;Specifically, this work will investigate and develop several ultra wide-band gain-flattened and stabilized silica-based EDFA configurations with flexible and scalable Wavelength Add/Drop (WADM) capabilities.;(2) A novel practical filtering technology that is compatible with the channel spacing must also be developed and investigated.;In examining the filtering technology options, the characteristics of filters will be compared based on the following: (1) Insertion loss, (2) Optical bandwidth, (3) Crosstalk for both adjacent and non adjacent channels, (4) Polarization dependence loss.;The proposed work will be carried out in two overlapping phases: (i) modeling and simulation, and (ii) related experiments. First, we will measure and characterize the performance of a single-stage/dual-stage amplifier. We will also measure and fully characterize the performance of a single fiber grating filter by measuring its transmittance and reflectance transfer functions. Then, we will develop a flexible and user-friendly computer modeling tool to investigate the overall performance of several different two-band EDFA architectures with different pumping schemes, pumping wavelength, pumping power, and WADM capabilities. We will then use the initial simulation results for guiding our experimental program, to establish theoretical limits to performance and to compare with experimental results.;Finally, using the key DWDM enabling technologies developed in this thesis, we will demonstrate and characterize the end-to-end performance of sixteen 2.5 Gb/s DWDM channels transmission over 800 km of standard SMF. (Abstract shortened by UMI.).
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Type
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dissertation
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Source
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PQT Legacy CUNY.xlsx
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degree
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Ph.D.
