Fiber optic switching device

Details Fiber optic switching device Fiber optic switching device

1980-08-08

1982-11-16

Nussbaum, Marvin L.

350 9615, G02B 5172, G02B 5174

Patent

active

043592619

ABSTRACT:
An electro-optical crystal slab defining an optical waveguide modulator between two parallel boundary regions. Each boundary region has electrodes next to the channel and a doped area immediately outside the region. An electric field applied via the boundary electrodes creates a low index of refraction and transmitted light remains in the waveguide. When boundary fields are removed some light is absorbed by the doped material. Fields applied to compensating electrodes lower the index of refraction of the doped area so that the light is directed into it and absorbed. Any light passing through the absorbing material is contained in an alternate channel.

REFERENCES:
patent: 3320013 (1967-05-01), Johnson
patent: 3695745 (1972-10-01), Furukawa
patent: 4127320 (1978-11-01), Li
patent: 4181399 (1980-01-01), McMahon et al.

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