Title:
OPTICAL AMPLIFIER
Document Type and Number:
WIPO Patent Application WO1991007010
Kind Code:
A3
Abstract:
An optical amplifier comprising a substrate of a semiconductor material having a pair of opposed surfaces and a body of semiconductor material on one of the surfaces. The body includes a pair of clad layers of opposite conductivity types having an intermediate quantum wall region therebetween. The clad layers are of a semiconductor material which form a heterojunction with the material of the quantum well region. The clad layers and quantum well region forms a waveguide which extends along the body. A gain section is in the body along the waveguide. The gain section includes a capping layer over the outermost clad layer, a contact on the capping layer and a contact on the other surface of the substrate to allow a voltage to be applied across the gain section. The gain section is adapted to generate light in the active region when a voltage is applied thereacross. A light input section having a grating extending across the body is at one end of the gain section. The light input section is adapted to direct light into the body and along the waveguide. A light output section having a grating extending across the body is at the other end of the gain section. The light output section is adapted to direct the amplified light from the gain section out of the body. The periods of the gratings are such that no self-oscillation of the light in the waveguide occurs.
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Inventors:
CARLSON NILS WILLIAM (US)
EVANS GARY ALAN (US)
HAMMER JACOB MEYER (US)
ETTENBERG MICHAEL (US)
EVANS GARY ALAN (US)
HAMMER JACOB MEYER (US)
ETTENBERG MICHAEL (US)
Application Number:
PCT/US1990/006074
Publication Date:
June 27, 1991
Filing Date:
October 26, 1990
Export Citation:
Assignee:
SARNOFF DAVID RES CENTER (US)
International Classes:
H01S5/50; H04B10/17; H01S5/187; (IPC1-7): H03F/
Foreign References:
| US4194162A | 1980-03-18 | |||
| US4881236A | 1989-11-14 | |||
| US3887876A | 1975-06-03 |
Other References:
HAMMER ET AL.: "Phase-locked operation... diode lasers", APPLIED PHYSICS LETTERS, vol. 50, no. 11, 16 March 1987 (1987-03-16), pages 659 - 661
EVANS ET AL.: "Two-dimensional coherent... surface emission", IEEE JOURNAL OF QUANTUM ELECTRONICS, vol. 53, no. 23, June 1998 (1998-06-01), pages 2275 - 2277
Journal of Lightwave Technology, 09 September 1989, CARLSON et al., High Speed Switching... Diode Lasers, 12th Conference on Optical Fiber Communications.
EVANS ET AL.: "Two-dimensional coherent... surface emission", IEEE JOURNAL OF QUANTUM ELECTRONICS, vol. 53, no. 23, June 1998 (1998-06-01), pages 2275 - 2277
Journal of Lightwave Technology, 09 September 1989, CARLSON et al., High Speed Switching... Diode Lasers, 12th Conference on Optical Fiber Communications.
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