Birefringence is the optical property of a material having a refractive index that depends on the polarization and propagation direction of light. In systems which have a symmetry other than cubic, this property is very important, and represents a very interesting optical phenomenon. My question is; what is the exact use of this phenomenon and in which optoelectronic components, the latter is used ??
The answer to your question lies in the field of Optical Mineralogy, which is ignored by too many geologists, IMSO [In My Strong Opinion] (Recommended: ).
-Steve-
Dynamic birefringence of the linear optical amplifier
(LOA) is theoretically and experimentally investigated. Significant
nonlinear variations of the state of polarization with the input
power and bias current of the LOA have been found. Based on
this nonlinear change of the state of polarization, an all-optical 2R
regenerator is demonstrated. Under static operation, an extinction
ratio (ER) improvement of 15 dB has been obtained for an input
ER of 5 dB. With a degraded input signal, a receiver sensitivity
improvement of over 3 dB at a bit-error rate (BER) of 10 9
has been found for 2.5 Gb/s. For 10 Gb/s, zero power penalty
is observed. Significant improvements of ER for both 2.5 and
10 Gb/s are obtained.
birefringent properties of a Highly Birefrigent Hybrid Photonic Crystal Fiber. Polarization dependent loss as high as 21 dB is experimentally obtained on the photonic bandgap edges.
http://ieeexplore.ieee.org/document/1176685/
http://ieeexplore.ieee.org/document/5427467/
@ Mohamed Issam Ziane
Birefringence plays a huge role in Optical Mineralogy for Geologists. One can observe very distinct birefringent colours for different mineral phases.
Polarizing Microscopes are employed for these studies.
Also, It plays an important role in the phenomenon of Double refraction exhibited by some crystals like Calcite, etc...
It is the polarization dependence of the refractive index in a medium.
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