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Optical Fiber Telecommunications VA, 5th Edition
book

Optical Fiber Telecommunications VA, 5th Edition

by Ivan Kaminow, Alan E. Willner, Tingye Li
July 2010
Intermediate to advanced content levelIntermediate to advanced
944 pages
34h 12m
English
Academic Press
Content preview from Optical Fiber Telecommunications VA, 5th Edition
perfectly or over sample the spectra from the AWGs, i.e., s 1 for all AWL ports
and all in the spectral region of interest.
A layout for a DGEF is shown in Figure 9.34. There is an MZI with thermooptic
phase shifters in each arm. Each MZI must be driven in a push–pull fashion so as
to maintain a constant phase difference between adjacent AWL arms. Using push–
pull also reduces the polarization dependence, because it reduces the maximum
required phase shift, and a typical silica thermooptic phase shifter shifts
TM-polarized light 4% more efficiently than TE-polarized light. Furthermore,
push–pull reduces the worst-case power consumption and keeps ...
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Publisher Resources

ISBN: 9780123741714