Method and apparatus for accurately fabricating a depolarizer

Details Method and apparatus for accurately fabricating a depolarizer Method and apparatus for accurately fabricating a depolarizer

1996-08-19

1999-03-09

Sanghavi, Hemang

Optical waveguides

Polarization without modulation

385 97, 356 731, G02B 600

Patent

active

058811850

ABSTRACT:
Aligned birefringent fiber segments are reliably and efficiently rotated approximately 45.degree. relative to each other until the extinction ratio measurement at the output is approximately 0 dB, then birefringent fibers are fused. To determine the extinction ratio, a Wollaston analyzer is placed at the output of the birefringent fiber. Photodetectors placed on each output of the Wollaston analyzer, substantially simultaneously measure the output intensity of each propagation axis.

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