1982-11-02
1986-08-19
Corbin, John K.
G02F 111
Patent
active
046066144
ABSTRACT:
An acousto-optic isolator for a semiconductor laser diode comprises a Fabry-Perot resonator tuned to the laser optical frequency f.sub.o followed by an acousto-optic Bragg diffraction device utilizing surface acoustic waves of frequency f.sub.a launched from a transducer. Light focussed by a lens to the load has a resultant frequency f.sub.o +f.sub.a. Any light reflected from the load suffers a further change in frequency to f.sub.o +2f.sub.a in the diffraction device and hence is blocked by the resonator. Undiffracted light can be detected at a photo-detector and used in a feedback control loop to stabilize the light source to the resonator.
REFERENCES:
patent: 4057770 (1977-11-01), Henningson et al.
patent: 4332441 (1982-06-01), Margolis
patent: 4361383 (1982-11-01), McMahan, Jr.
Hutcheson, "Integrated Optics: Showing Off Applications", Photonics Spectra, vol. 16, No. 4, Apr. 1982.
Smith et al., "Integrated Electrooptic Nonlinear Fabry-Perot Devices, Meeting on Int. & Guided Wave Optics, Jan. 1978.
Heeks John S.
Jackson John D.
Christopher J. S.
Corbin John K.
International Standard Electric Corporation
Lemmo Vincent J.
Peterson T. L.
LandOfFree
Acousto-optic isolator does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Acousto-optic isolator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Acousto-optic isolator will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-391504