Variable optical coupler

Details Variable optical coupler Variable optical coupler

1975-07-09

1976-08-24

Corbin, John K.

350 96WG, G02B 514

Patent

active

039763587

ABSTRACT:
This invention relates to an optical waveguide switch and directional coupler providing variable coupling between two optical fibers. The coupler is fabricated in semiconductive material such as GaAs or GaAlAs. A double heterostructure is used having a higher index of refraction middle layer. Optical fibers are inserted in channels in the semiconductive material. Varying the reverse bias across the heterostructure junctions located in the material between the channels electrically changes the refractive index of the material and alters the coupling between the fibers. The device is applicable to switching in optical communication systems.

REFERENCES:
patent: 3760297 (1973-09-01), Thompson
patent: 3883219 (1975-05-01), Logan et al.

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