Signal device employing photorefractive area modulation

Details Signal device employing photorefractive area modulation Signal device employing photorefractive area modulation

1983-05-09

1985-10-01

Buczinski, S. C.

Modulators

Amplitude modulator

Nonlinear device controlled by modulating signal

350354, H01S 300, G02B 523, G02F 101

Patent

active

045448981

ABSTRACT:
A variable area recording geometry is formed over the surface of a photosensitive material by scanning and exposing with an optical writing beam. The width of this area is determined by input signals to be processed. The exposed photorefractive medium results in a phase modulation of an optical beam traversing the medium in a direction parallel to the surface as in an integrated optical waveguide.

REFERENCES:
patent: 3454414 (1964-11-01), Andes et al.
patent: 3535021 (1968-05-01), Amodei
patent: 3940201 (1976-02-01), Micheron et al.
patent: 4166254 (1979-08-01), Bjorklund
patent: 4216474 (1980-08-01), Levine

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