Distributed feedback semiconductor laser with monitor

Details Distributed feedback semiconductor laser with monitor Distributed feedback semiconductor laser with monitor

1983-04-21

1987-03-24

Davie, James W.

Coherent light generators

Particular active media

Semiconductor

357 19, 372 29, 372 96, H01S 319

Patent

active

046530584

ABSTRACT:
A distributed feedback semiconductor laser with a monitor, which has periodic corrugations on a light emitting layer or an adjoining layer in the direction of travel of light and performs laser oscillation by the injection of a current into said light emitting layer. In accordance with the present invention, a laser region forming said distributed feedback semiconductor laser and a monitor region for detecting the output of said laser region are disposed on the same substrate. A gap between said monitor region and said laser region is filled with a semiconductor of an energy bandgap larger than that of the light emitting layer of said laser region.

REFERENCES:
patent: 3999146 (1976-12-01), Lang et al.

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