Coherent light generators – Particular active media – Semiconductor
Reexamination Certificate
2008-05-20
2008-05-20
Nguyen, Dung T. (Department: 2828)
Coherent light generators
Particular active media
Semiconductor
C372S050110, C372S070000
Reexamination Certificate
active
07376164
ABSTRACT:
A semiconductor laser is disclosed with which a VCSEL can be constituted with a simplified configuration for optical transmission at a transmission rate higher than 10 Gbps. The semiconductor laser includes a resonator including a first active region able to emit light in response to current injection and a second active region able to emit light in response to external excitation light. Multilayer film reflecting mirrors sandwich the resonator from two opposite sides. The first active region and the second active region generate light at a wavelength the same as the resonance mode of the resonator.
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Dickstein & Shapiro LLP
Nguyen Dung T.
Ricoh & Company, Ltd.
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