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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
determined from XPM-induced phase fluctuations. The spectral efficiency reaches
1.05 bit/s/Hz in this case. Such nonlinear phase fluctuations due to the XPM effect
impose a serious transmission penalty as channel spacing is decreased. This is
because of the reduction of the walk-off parameter, which is defined as the
difference in the group delay per length between DWDM channels.
Figures 3.26 (d) and (e) show the constellation maps, when channel spacing is
43 and 19 GHz, respectively, measured at the launched power of 9.5 dBm/ch. We
find that the symbol distribution is seriously broadened through XPM as channel
spacing decreases.
3.7 CONCLUSION
We
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Publisher Resources

ISBN: 9780123741721