All optical phase sensitive detector and image demultiplexer

Details All optical phase sensitive detector and image demultiplexer All optical phase sensitive detector and image demultiplexer

1992-05-08

1994-04-12

Housel, James C.

Optics: measuring and testing

By particle light scattering

With photocell detection

356354, 356359, 359245, G01B 902

Patent

active

053030311

ABSTRACT:
Method of demultiplexing a composite signal light beam includes the steps of directing the composite signal light beam and a reference light beam at a photorefractive material, modulating the reference beam at a frequency about equal to the modulation frequency of a selected signal beam to be demultiplexed, and recovering the phase conjugate signal produced by interference of the reference beam with the composite signal light beam within the photorefractive material. The method also enables optical phase detection of the selected signal beam with respect to the reference beam.

REFERENCES:
patent: 4294544 (1981-10-01), Altschuler et al.
patent: 4536861 (1985-08-01), Graindorger et al.
patent: 4558952 (1985-12-01), Kulesh et al.
patent: 4670646 (1987-06-01), Spivey
patent: 4934815 (1990-06-01), Tai et al.
patent: 4956834 (1990-09-01), Coleman
patent: 4991963 (1991-02-01), Sutton
patent: 5040896 (1991-08-01), Moslehi
Attached three pages of abstracts handed out in Nov. 1990 at the annual meeting of the Optical Society of America.

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