Waveguide optical element and its driving method

Details Waveguide optical element and its driving method Waveguide optical element and its driving method

1991-02-22

1992-10-20

Moskowitz, Nelson

Optical: systems and elements

Optical amplifier

Particular active medium

359337, 357 30, 272 46, 272 49, G02R 634, H01S 319

Patent

active

051575442

ABSTRACT:
A waveguide optical element includes a waveguide layer which is formed on a substrate, through which light propagates and which has an end face from which the propagation light becomes incident on the waveguide layer or emerges, a thin film formed on the end face of the waveguide layer, for increasing or decreasing a reflectance of light at end face, and control means having an electrode formed on a portion of the waveguide layer, for controlling a refractive index of the portion of the waveguide layer, which portion is in contact with the thin film. And its driving method is provided.

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patent: 4904045 (1990-02-01), Alferness et al.
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patent: 4961197 (1990-10-01), Tanaka et al.
patent: 5004325 (1991-04-01), Glass et al.
patent: 5016990 (1991-05-01), Dobson
Pamulapate et al.; "Electro-Optic Effect . . . Resonances"; Superlattices Microstruct. vol. 8, #3, pp. 317-321, 1990.
Zucker et al.; "Electrorefraction . . . Heterostructures"; Electr. Lett., vol. 24, #8, pp. 458-460, Apr. 14, 1988.

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