Waveguide-type optical switch

Optical waveguides – With optical coupler – Particular coupling structure

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385 40, G02B 626

Patent

active

051631067

ABSTRACT:
A waveguide-type optical switch having a Y-branch structure composed of a Y-waveguide and branched waveguides provided with electrodes for electrically controlling the guide asynchronism thereof characterized in that the branched waveguides arranged at a converging angle of .theta..sub.1, and the Y-waveguide having a branching angle .theta..sub.2 (.theta..sub.2 >.theta..sub.1) connected to the branched waveguides. It is possible to shorten the length of the device of the Y-structured arrangement having the electrodes capable electrically of controlling the asynchronism of the branched waveguides.

REFERENCES:
patent: 4165225 (1979-08-01), Auracher et al.
patent: 4652076 (1987-03-01), Unger
patent: 4820009 (1989-04-01), Thaniyavarn
Thylen et al., "Theoretical and Experimental Investigations of 1.times.2 Digital Switches," 15th European Conference on Optical Communication (ECOC '89) vol. 1, 10-14, Sep. 1989, pp. 240-243.
Sawa et al., "Design Considerations for Mode-Conversion Type Optical Branching Waveguides", Electronics and Communications in Japan:Part II, vol. 72, No. 2, Feb. 1989, pp. 65-77.

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