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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
precoding can be omitted in laboratory experiments using pseudo-random bit
sequences (PRBS), since differential precoding does not change a PRBS [215].
The main advantage from using DPSK instead of OOK comes from a 3-dB
receiver sensitivity improvement [9, 216], which can be intuitively understood
from Figure 2.17, showing that the symbol spacing for DPSK is increased by
ffiffiffi
2
p
compared to OO K for fixed average optical power [214]. This increased
symbol distance makes DPSK accept a
ffiffiffi
2
p
larger standard deviation of the optical
field noise than OOK for equal BER, which translates into a 3-dB reduction in the
required OSNR. Dependin g on modulation waveforms, ...
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Publisher Resources

ISBN: 9780123741721