Polarization independent optical device

Details Polarization independent optical device Polarization independent optical device

1991-11-27

1994-12-27

Shafer, Ricky D.

Optical: systems and elements

Polarization without modulation

Depolarization

359495, 359496, 359497, G02B 530

Patent

active

053770404

ABSTRACT:
A polarization independent optical device capable of eliminating the apparent polarization dependence of a dielectric multi-layer film and permitting the design of an optical path at an optional angle of incidence of light beam. The polarization independent optical device comprises a tapered double-refractive crystal disposed so that an optic axis thereof is perpendicular to an incident optical path, and a dielectric multi-layer film disposed on an exit side of light beam with respect to the tapered double-refractive crystal.

REFERENCES:
patent: 3963995 (1976-06-01), Jacob
patent: 4198123 (1980-04-01), Kremen
patent: 4595261 (1986-06-01), Baasch et al.
patent: 4634232 (1987-01-01), Tateoka
"Multi/Demultiplexer Isomg a 4-Port Optical Circulator and Interference Filters," M. Koga et al., Transactions of the Institute of Electronics, Information and Communication Engineers of Japan, vol. E72, No. 10, Oct. 1989, Tokyo, pp. 1086-1088.

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