Integrated optical signal processor using diffraction of light b

Details Integrated optical signal processor using diffraction of light b Integrated optical signal processor using diffraction of light b

1983-10-28

1986-03-11

Lee, John

350 9611, 35016212, G02B 612

Patent

active

045751790

ABSTRACT:
An integrated optical signal processor device. The device includes a thin film of yttrium iron garnet ferrite material formed on a gadolinium gallium garnet substrate. A guided optical beam in a first polarization mode is directed through the thin film. A stripline antenna formed on the surface of the thin film is coupled to receive a microwave RF input signal. Under the influence of a bias magnetic field, the RF input signal excites a magnetostatic wave in the thin film. By means of Bragg diffraction, the magnetostatic wave diffracts the guided optical beam and thereby converts a portion of the beam into a second orthogonal polarization mode in response to the RF input signal. The guided optical beam is thereby modulated by the RF input signal. A preferred embodiment is disclosed which can be configured to form a spectrum analyzer, a time integrating correlator, and a space integrating convolver.

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J. N. Lee, A. B. Tveten; "Abstract-Signal Processing Using Optical Interaon with Magnetostatic Waves" Congress and Twelfth Assembly of the International Commission for Optics; Graz, Austria; Aug. 31-Sep. 5, 1981.
A. D. Fisher et al., "Diffraction of Guided Optical Waves in Magnetostatic Wave Delay Lines", reprinted from 1982 Ultrasonics Symposium, pp. 541-546.

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