Waveguide optical switches

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357 20, 357 2312, G02F 1015

Patent

active

047844515

ABSTRACT:
The present invention provides a waveguide type optical switch which has a high extinction ratio and can be driven efficiently at a low voltage or a low current injection. Where the waveguide type optical switch is used as a reflection type optical switch, the switch section is of current confinement structure, and where it is used as a directional coupler type optical switch, the pn junction is formed in the position where the optical electric field takes the maximum value for the fundamental mode of the light propagating in the waveguide.

REFERENCES:
patent: 4521069 (1985-06-01), Ikeda
McFee et al., "Beam Deflection and . . . by Free-Carrier Injection in . . . ,"Appl. Phys. Lett., vol. 23, No. 10, Nov. 1973, pp. 571-573.

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