Semiconductor optical waveguide-integrated light-receiving devic

Details Semiconductor optical waveguide-integrated light-receiving devic Semiconductor optical waveguide-integrated light-receiving devic

1995-06-07

1996-05-28

Ullah, Akm E.

Optical waveguides

Integrated optical circuit

G02B 612

Patent

active

055219942

ABSTRACT:
Disclosed herein is a semiconductor optical waveguide-integrated light-receiving device comprising a waveguide-type photodetector and a passive optical waveguide which are selectively formed on the same substrate, wherein the width of mask for a selective growth is varied along the waveguiding direction so as to simultaneously form core layers which differ from each other in absorption edge wavelength. The core layer may be formed with an MQW layer. It is also featured that waveguide width of the photodetector is made larger than the waveguide width of the optical waveguide. The photodetector and the optical waveguide may be buried by an n--InP layer.

REFERENCES:
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patent: 5054871 (1991-10-01), Deri et al.
patent: 5111469 (1992-05-01), Narui et al.
patent: 5121182 (1992-06-01), Kuroda et al.
patent: 5252852 (1993-10-01), Makiuchi et al.
patent: 5321779 (1994-06-01), Kissa
patent: 5331659 (1994-07-01), Ohata et al.

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