Distributed feedback semiconductor laser including...

Details Distributed feedback semiconductor laser including... Distributed feedback semiconductor laser including...

2008-05-13

2009-12-01

Nguyen, Dung T (Department: 2828)

Coherent light generators

Particular active media

Semiconductor

C372S043010, C372S050100, C372S050210

Reexamination Certificate

active

07627012

ABSTRACT:
In general, a complex-coupled distributed feedback (DFB) semiconductor laser includes a grating formed by grooves through at least a part of an active region of a laser cavity. The complex-coupled DFB laser may be configured with a wavelength monitoring section and may be configured to provide facet power asymmetry. The wavelength monitoring section may include a second-order grating section configured to emit radiation (e.g., vertical radiation) from a side of the DFB laser for monitoring.

REFERENCES:
patent: 6577660 (2003-06-01), Muroya
patent: 2006/0088066 (2006-04-01), He

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