Directly modulated semiconductor laser having reduced chirp

Details Directly modulated semiconductor laser having reduced chirp Directly modulated semiconductor laser having reduced chirp

1997-07-22

2000-09-05

Sanghavi, Hemang

Coherent light generators

Particular resonant cavity

Specified cavity component

372 20, 372 28, 372 6, 385 37, 359182, H01S 308, H04B 1004

Patent

active

061154032

ABSTRACT:
In accordance with the present invention, an in-line fiber Bragg grating is coupled to the output of a directly modulated DFB laser. The grating preferably rejects chirp induced frequencies of light emitted by the DFB laser. Accordingly, light transmitted through the grating is spectrally narrowed and has a higher extinction ratio, thereby decreasing bit error rate probabilities.

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