Coherent light generators – Particular resonant cavity – Distributed feedback
Patent
1982-09-13
1986-02-25
Davie, James W.
Coherent light generators
Particular resonant cavity
Distributed feedback
357 17, 372 45, H01S 319
Patent
active
045731632
ABSTRACT:
Stabilized, single-mode operation of semiconductor lasers is obtained by introducing longitudinally spaced variations in the effective refractive index along the active waveguiding medium, where said index changes have a spatial period corresponding to many half-wavelengths of the guided optic wave. Because the spatial period of the variations is relatively long, as opposed to half an optical wavelength used in the prior art distributed feedback lasers, a laser in accordance with the invention is much easier to fabricate.
REFERENCES:
patent: 3760292 (1973-09-01), Kogelnik et al.
patent: 3970958 (1976-07-01), Streifer et al.
patent: 4025939 (1977-05-01), Aiki et al.
patent: 4257011 (1981-03-01), Nakamura et al.
patent: 4359776 (1982-11-01), Acket et al.
patent: 4400813 (1983-08-01), Kaminow
Optical Communications Conference--Amsterdam, Netherlands, 9-17 through 19, 1979--"A Novel Single Mode Laser Having Periodic Variations in the Stripe Width (`Super DFB`)" P. J. de Waard (Philips Research Labs., Eindhovan, Netherlands.
Kawaguchi et al., "Bistable Operation in Semiconductor Lasers with Inhomogeneous Excitation", Electronics Letters Feb. 19, 1981, vol. 17, No. 4, pp. 167-168.
AT&T Bell Laboratories
Davie James W.
Laumann Richard D.
Sherman Sylvan
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