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Optical Fiber Telecommunications VB, 5th Edition
book

Optical Fiber Telecommunications VB, 5th Edition

by Ivan Kaminow, Tingye Li, Alan E. Willner
July 2010
Intermediate to advanced content levelIntermediate to advanced
928 pages
33h 42m
English
Academic Press
Content preview from Optical Fiber Telecommunications VB, 5th Edition
Polarization-Multiplexed DPSK
A commonly used means to double the spectral efficiency is via PMUX, with a
trade-off of increased complexity at both the transmitter and the receiver. At the
transmitter, two sets of modulators are usually needed to individually modulate the
two polarization states of a polarization-multiplexed DPSK signal. Since the polar-
ization of a signal after fiber transmission is uncertain and time-varying, adaptive
polarization demultiplexing is needed, either through optical means or electronic
means. Furthermore, in WDM transmission, interchannel cross-phase modulation
(XPM) may lead to nonlinear polarization scattering, which causes signal polariza-
tion to vary on a bit-by-bit basis and degrade the performance of adaptive ...
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Publisher Resources

ISBN: 9780123741721