Broad-band optical semiconductor device and a method for...

Details Broad-band optical semiconductor device and a method for... Broad-band optical semiconductor device and a method for...

2008-05-06

2008-05-06

Harvey, Minsun Oh (Department: 2828)

Coherent light generators

Particular temperature control

C372S036000, C372S043010

Reexamination Certificate

active

11346974

ABSTRACT:
Disclosed is an optical semiconductor device that provides an optical gain or optical loss depending on application of electric current. The optical semiconductor device comprises: a lower clad layer; an active layer disposed on the lower clad layer, the active layer generating optical gain or optical loss depending on injection of carriers; an upper clad layer disposed on the active layer, the upper clad layer serving to trap light in the active layer in cooperation with the lower clad layer; and a temperature control part for controlling the temperature distribution of the active layer along the light propagation axis in such a manner that temperature of the active layer varies depending on positions in the active layer.

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