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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
system at twice the symbol rate but without polarization multiplexing, which
follows directly from the definition of the OSNR, Eqn (2.11). Note also that at
equal OSNR the signal launch power in each polarizat ion is lower by 3 dB
compared to single-polarizat ion transmission at twice the symbol rate. Compared
to DQPSK with delay demodulation, coherently detected QPSK shows a theoretical
sensitivity advantage of 1.5–2.4 dB [40]. From a nonlinear transmission point of
view, polarization multiplexing may add nonlinear depolarization, which results
from XPM for polarization multiplexed OOK [246, 247]. Using phase-modulated
formats such as QPSK can significantly reduce nonlinear depolarization [247].
Using coherent detection in principle allows for effi ...
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Publisher Resources

ISBN: 9780123741721