Optical thermooptic switch device

Details Optical thermooptic switch device Optical thermooptic switch device

1985-12-23

1988-06-28

Sikes, William L.

350 9614, 350 9612, G02B 610

Patent

active

047535059

ABSTRACT:
An optical waveguide path and an optical branch path branching from the waveguide path are formed in an optical material which is variable in refractive index with the variation of temperature. A heat generator is provided in the vicinity of the branching portion of the waveguide path. The heat of the generator produces in the optical material a temperature gradient in a direction parallel with a plane including the waveguide path and the branch path. The temperature gradient gives the optical material a temperature gradient, by which a light beam propagating through the waveguide path is deflected for switching.

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Guglielmi et al., "Optical Bistability in LiNbO.sub.3 . . . Detector " Proceed, 1st Eur. Conf. on Int. Opt., 9/81, pp. 61-62.
Haruna et al., "Thermo-Optic Effect . . . Switching", Elect. Lett., vol. 14, No. 9, pp. 283-284, 4/78.
Soref et al., "Multimode 2.times.2 Optical Crossbar Switch . . .", Elect. Lett., vol. 14, No. 9, pp. 283-284, 4/78.

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