Semiconductor device manufacturing: process – Making device or circuit emissive of nonelectrical signal – Including integrally formed optical element
Patent
1998-09-29
1999-11-16
Bowers, Charles
Semiconductor device manufacturing: process
Making device or circuit emissive of nonelectrical signal
Including integrally formed optical element
438 29, 438 39, 438 46, 372 45, 385 28, 385 49, H01S 305
Patent
active
059856858
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 fibre. A method for making such semiconductor optical devices is also disclosed.
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Lealman Ian F.
Perrin Simon D.
Robertson Michael J.
Bowers Charles
British Telecommunications public limited company
Christianson K.
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