Phase shifted distributed feedback laser

Details Phase shifted distributed feedback laser Phase shifted distributed feedback laser

1990-09-13

1991-09-24

Davie, James W.

Coherent light generators

Particular resonant cavity

Distributed feedback

372 45, H01S 319

Patent

active

050520156

ABSTRACT:
A semiconductor distributed feedback laser having a grating with .lambda./4 phase shift which is produced by moving the left and right sections of the grating with respect to each other in a direction perpendicular to the longitudinal axis of the active region.

REFERENCES:
patent: 3760292 (1973-09-01), Kogelnik et al.
patent: 4740987 (1988-04-01), McCall et al.
patent: 4775980 (1988-10-01), Chinone et al.
patent: 4796273 (1989-01-01), Yamaguchi
patent: 4833687 (1989-05-01), Hirata
patent: 4847857 (1989-07-01), Ohkura
IEEE Photonic Technology Letters, 1, "Corrugation-Pitch-Modulated Phase-Shifted DFB Laser,"]by M. Okai, et al., August 1989, pp. 200-201.
Applied Physics Letters, 55, Jul. 31, 1989, "Novel Method to Fabricate Corrugation for a .lambda./4-Shifted Distributed Feedback Laser Using A Grating Photomask", by M. Okai et al., pp. 414-417.

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