Optical waveguide switch

Details Optical waveguide switch Optical waveguide switch

1988-01-13

1989-02-21

Lee, John D.

350 9615, G02F 129

Patent

active

048059757

ABSTRACT:
An optical waveguide switch is disclosed in which at least two optical waveguides intersect at a predetermined angle to each other to provide, on both sides of the intersection region, input side optical waveguide regions for receiving incident light and output side optical waveguide regions for outputting guided light, and in which the incident light is input into one of the input side optical waveguide regions and is output from a desired one of the output side optical waveguide regions. In accordance with the present invention, an optically nonlinear material whose refractive index undergoes a substantial variation, depending on the intensity of incident light, is disposed in the intersection region. A loop is provided in association with a corresponding one of the input side optical waveguide regions for essentially branching the guided light in the corresponding waveguide output side optical waveguide region for feedback to the corresponding input side optical waveguide region.

REFERENCES:
patent: 4211467 (1980-07-01), Cross et al.
patent: 4382660 (1983-05-01), Pratt, Jr. et al.
patent: 4507776 (1985-03-01), Smith
patent: 4583817 (1986-04-01), Papuchon
patent: 4626075 (1986-12-01), Chemla
Wa et al., "All Optical Multiple-Quantum-Well Waveguide Switch", Electronics Lett., vol. 21, No. 1, Jan. 1985, pp. 26-28, (350/96.13).

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