Optical: systems and elements – Optical amplifier – Particular active medium
Patent
1998-04-08
1999-07-27
Moskowitz, Nelson
Optical: systems and elements
Optical amplifier
Particular active medium
359183, 359188, 385 3, G02B 612, H01S 318, H01L 2170
Patent
active
059300310
ABSTRACT:
An optical signal processor is implemented as a monolithically integrated semiconductor structure having optical waveguide devices forming beam splitters, optical amplifiers and optical phase shifters. The monolithic structure photonically controls a phased-array microwave antenna. Phase-locked master and slave lasers generate orthogonal light beams having a difference frequency that corresponds to the microwave carrier frequency of the phased-array antenna. The lasers feed the signal processor, which performs beam splitting, optical amplifying and phase shifting functions. A polarizer and an array of diode detectors convert optical output signals from the signal processor into microwave signals that feed the phased-array antenna. The optical waveguides of the signal processor are fabricated in a single selective epitaxial growth step on a semiconductor substrate.
REFERENCES:
patent: 4826282 (1989-05-01), Alferness
patent: 5122852 (1992-06-01), Chan et al.
patent: 5127081 (1992-06-01), Koren et al.
patent: 5237639 (1993-08-01), Kato et al.
patent: 5770472 (1998-06-01), Zhou et al.
Zhou et al. Proc. SPIE, vol. 3491, Jul. 29, 1998; pp. 410-413.
Pamulepati, S. et al, Appl. Phys. Lett., vol. 56, #2, pp. 103-104, Jan. 8, 990.
Dutta Mitra
Pamulapati Jagadeesh
Shen Paul H.
Zhou Weimin
Moskowitz Nelson
O'Meara John M.
The United States of America as represented by the Secretary of
Zelenka Michael
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