Coherent light generators – Particular active media – Semiconductor
Patent
1997-04-25
1999-01-19
Healy, Brian
Coherent light generators
Particular active media
Semiconductor
372 43, 372 45, 385 14, 437 51, 437129, H01S 319, G02B 612, H01L 2120
Patent
active
058621687
ABSTRACT:
Monolithic integrated optical semiconductor components with a buried ridge stripe waveguide (BRS) are used for optical communications. They contain active (AB) and passive (PB) waveguide regions. High absorption losses occur in passive waveguide regions with a buried ridge stripe waveguide, while passive waveguide regions with low-loss rib waveguides have reflections and leakage losses in the junction with the active waveguide regions. A semiconductor component (BE2) according to the invention has a buried ridge stripe waveguide (BRS) in active (AB) as well as passive (PB) waveguide regions, which is covered by a cap layer (DS). In addition the passive regions (PB) have a semi-insulating or undoped cladding layer (MS) between the ridge stripe waveguide (BRS) and the cap layer (DS). A process is furthermore indicated whereby a semiconductor component according to the invention can be manufactured.
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Laube Gert
Schilling Michael
Alcatel Alsthom
Healy Brian
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