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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
14.3.3 Photonic Band Gaps
Full 2D PBGs exist in the black finger-shaped regions in Figure 14.3. Some of
these extend into the region <k, where light is free to propagate in vacuum,
confirming the feasibility of trapping light within a hollow core.
14.4 CHARACTERISTICS OF GUIDANCE
In single-mode fiber (SMF), guided modes form within the range of axial
refractive indices n
cl
< n
z
< n
co
, when light is evanescent in the cladding
(n
z
= /k; core a nd cladding indices are n
co
and n
cl
). In PCF, three distinct
guidance mechanisms exist: a modified form of TIR [14, 15], PBG guidance
[11, 16], and a leaky mechanism based on a low density of photonic states in the
cladding [17]. In the following subsections, we explore the role of resonance and
antiresonance, and ...
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Publisher Resources

ISBN: 9780123741714