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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
V =
2
a

ffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffi
n
2
core
n
2
clad
q
: (15.27)
For conventional silica-based fibers, the difference in refractive index is a very
slow function of wavelength so the V-number (and hence the number of guided
modes) grows without limit as a/ !1(either large core or short wavelength).
However, in a PCF, the V-number is given by a slightly different expressi on from
Eqn (15.27) with a replaced by and n
clad
replaced by the effective cladding inde x
of the microstructured cladding. This effective cladding index no longer has the
same wavelength dependence as the core index and asymptotically approaches
the core index in the short wavelength
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Publisher Resources

ISBN: 9780123741714