As
far as optical technology scenario is concerned, standard/ conventional optical
fiber plays an important role to make different applications in the field of
photonics. The concept of standard optical fiber has been originated since long
back. The transportation of light through conventional fiber is based on the
principle of total internal reflection. The principle Total Internal Reflection
(TIR) is accomplished, if the refractive index of core is higher than cladding,
otherwise TIR phenomenon cannot be achieved. However a new kind of optical
fiber is invention just before 18 years.
The new class of optical fiber does
not keep constrain regarding higher or lower refractive index between core and
cladding. Depending on the lower and higher refractive index of core with
respect to cladding, this optical fiber is divided in to two groups such as
microstructure fiber and photonic crystal fiber. Light transports through
microstructure govern the principle of Modified Total Internal Reflection
(M-TIR), where M-TIR is analogous to TIR from standard optical fiber. It relies
on a high index core region effective index provided by the microstructure region,
where photonic crystal fiber is governed by the principle of photonic band gap. Read more>>>>>>>>>>>>>>>>>>>
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