Optical device with composite passive and tapered active wavegui

Details Optical device with composite passive and tapered active wavegui Optical device with composite passive and tapered active wavegui

1996-08-23

1998-12-01

Davie, James W.

Coherent light generators

Particular active media

Semiconductor

385 28, H01S 319

Patent

active

058449299

ABSTRACT:
A semiconductor optical device, for example a laser, has a composite optical waveguide including a tapered, MQW active waveguide in optical contact with a substantially planar, passive waveguide. The fundamental optical mode supported by the composite waveguide varies along the length of the composite waveguide so that, in a laser, the laser mode is enlarged and is a better match to single mode optical fiber. A method for making such semiconductor optical devices is also disclosed.

REFERENCES:
patent: 4389567 (1983-06-01), Khoe et al.
patent: 4944838 (1990-07-01), Koch et al.
patent: 5278926 (1994-01-01), Doussiere

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