1980-09-04
1983-06-21
Gensler, Paul L.
350403, G02B 5172
Patent
active
043890903
ABSTRACT:
Fiber optic device for controlling the state of polarization of light. In one embodiment, a strand of fiber optic material is bent into a generally planar coil of relatively tight radius to stress the material and form a birefringent medium having principal axes which are rotated to control the polarization of light passing through the strand. In a second embodiment, one portion of a fiber optic strand is twisted about its axis to change the polarization, and a second portion of the strand is formed into a coil which is free to change in radius without additional twisting as the first portion is twisted.
REFERENCES:
patent: 4261639 (1981-04-01), Kogelnik et al.
patent: 4280766 (1981-07-01), Goss et al.
Ulrich et al., Single-Mode Fiber-Optical Polarization Rotator, Applied Optics, vol. 18, No. 11, Jun. 1, 1979, pp. 1857-1861.
Polarization Controller Can Maintain Light Polarization in Single ModeFiber, Laser Focus, Feb. 1981, pp. 58, 62.
Barnoski et al., Measurements in Fiber Optics, Proc. of the IEEE, vol. 66, No. 4, Apr. 1978, pp. 429, 434 & 435 cited.
Gensler Paul L.
The Board of Trustees of Leland Stanford Jr. Univ.
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