Distributed feedback laser device

Details Distributed feedback laser device Distributed feedback laser device

2005-06-28

2005-06-28

Wong, Don (Department: 2828)

Coherent light generators

Particular resonant cavity

Distributed feedback

C372S019000, C372S027000, C372S028000, C372S045013, C372S046012, C372S049010, C372S049010, C372S049010, C372S050121, C372S096000, C372S102000

Reexamination Certificate

active

06912239

ABSTRACT:
A distributed feedback laser device inhibiting beam coupling coefficient variation resulting from fabrication dispersion and improving fabrication yield. The distributed feedback laser device includes cladding layers provided on an InP substrate and located on both sides of an active layer and a diffraction grating having grating bars, different in refractive index from the cladding layers, in either cladding layer and extending in a direction perpendicular to a light emission direction at a prescribed pitch in the emission direction, as well as at least one light distribution control layer, located in the cladding layer, spaced from the diffraction grating and having the same composition as the diffraction grating.

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T. Takiguchi et al., “English Translation of Extended Abstracts of 62ndScientific Lecture Meeting of the Japan Society of Applied Physics”, (Sep. 2001 at Aichi Institute of Technology).

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