Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Analysis of complex waves
Patent
1979-05-29
1981-02-24
Tokar, Michael J.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Analysis of complex waves
350 9614, G01R 2316
Patent
active
042530601
ABSTRACT:
Apparatus is provided comprising a laser source, a collimating lens, a focussing lens and a detector array disposed along an optical path. A surface acoustic wave transducer is disposed between the collimating and focussing lenses and is adapted to modulate laser light provided by the laser source as a function of the amplitude and frequency of energy applied to the transducer. In accordance with the invention, a 90.degree. Bragg diffraction grating disposed between the collimating lens and the transducer, is adapted for transmitting light of a predetermined frequency and predetermined polarization along the optical path. A specific embodiment incorporates the components on an integrated circuit chip.
REFERENCES:
patent: 3619796 (1971-11-01), Seidel
patent: 3877781 (1975-04-01), Kaminow
IBM Technical Disclosure Bulletin, Brown and Rowe, Acoustic Light Deflector Chromatic Variation Compensation, vol. 13, No. 9, Feb. 1971, pp. 2634-2635.
An Integrated Optic RF Spectrum Analyzer, by M. C. Hamilton et al., Optical Engineering, vol. 16, No. 5.
Spectrum Analyzer Using Acousto-Optic Devices, by D. L. Hecht, Optical Engineering, vol. 16, No. 5.
Float Kenneth W.
Hughes Aircraft Company
MacAllister W. H.
Tokar Michael J.
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