Waveguide type optical detection apparatus

Details Waveguide type optical detection apparatus Waveguide type optical detection apparatus

1990-07-10

1992-02-25

Lee, John D.

Optical waveguides

Directional optical modulation within an optical waveguide

385 7, G02B 610

Patent

active

050919822

ABSTRACT:
A waveguide type optical detection apparatus which is provided on an optical integrated circuit that has a waveguide for transmitting a light from point to point through the waveguide, one or more sets of two adjacent photodetectors provided on the waveguide, and one or more light-insensitive areas existing between the two adjacent photodetectors of each set. The waveguide type optical detection apparatus includes a waveguide focusing part and one or more reflection parts, the waveguide focusing part being provided on the waveguide for allowing a light beam passing through the waveguide to be focused on each of the two adjacent photodetectors of each set, and the reflection parts provided adjacent to each of the light-insensitive areas for reflecting each of light beams sent from the waveguide focusing means forward each of the two adjacent photodetectors of each set so that the light beams are received by the photodetectors. The waveguide type optical detection apparatus can be applied to a pickup for an optical disk and a photodetector array for an optical spectrum analyzer.

REFERENCES:
patent: 4548464 (1985-10-01), Auracher et al.
patent: 4672187 (1987-06-01), Fujita et al.
patent: 4861128 (1989-08-01), Ishikawa et al.
patent: 4971414 (1990-11-01), Funato et al.

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