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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
QW-direct transitions (i.e., to the conduction band G-valley) can be observed is that
the G–L intervalley scattering time is slow enough that bound QW states can be
formed by the G-valley states. The Ge intervalley scattering time at low temperature
has been measured to 570 fs [63]. Due to the somewhat too large Ge bandgap, useful
electroabsorption was achieved at 1440–1470 nm in the first device as shown in
Figure 7.20. By employing wider 12.5 nm Ge wells and also utilizing a red shift of
the absorption edge at elevated temperatures, the absorption modulation was
extended out to 1550 nm [64]. But much work still remains to achieve strong
absorpti ...
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Publisher Resources

ISBN: 9780123741714