Optical integrated circuit

Details Optical integrated circuit Optical integrated circuit

1995-04-19

1997-04-15

Epps, Georgia Y.

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

369103, 369107, 369122, 369 4423, 385 28, 385 37, G11B 7135

Patent

active

056217153

ABSTRACT:
An optical integrated circuit includes a substrate and a thin film formed on the substrate. A waveguide is formed by the thin film. A grating coupler includes a plurality of coupling regions for introducing an incident light beam into the waveguide, and for separating the incident light beam into output light beams propagated in the waveguide in different directions respectively. The output light beams are in a same waveguide mode and have polarization directions perpendicular to each other respectively. Photodetectors are exposed to the output light beams propagated in the waveguide for detecting the output light beams respectively.

REFERENCES:
patent: 4918679 (1990-04-01), Opheji et al.
patent: 5082339 (1992-01-01), Linnebach
patent: 5446719 (1995-08-01), Yoshida et al.
patent: 5453961 (1995-09-01), Brazas
patent: 5509094 (1996-04-01), Minami et al.

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