Accession Number : ADD012319

Title :   Integrated Optical Signal Processor Using Diffraction of Light by Magnetostatic Waves.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Lee,John N ; Fisher,Arthur D

Report Date : 11 Mar 1986

Pagination or Media Count : 12

Abstract : This patent discloses an integrated optical signal processor which includes a thin film of yttrium iron 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 mans 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 modulates 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.

Descriptors :   *PATENTS, *OPTICAL PROCESSING, *MAGNETOSTATICS, *BRAGG ANGLE, *DIFFRACTION, *SIGNAL PROCESSING, *MAGNETIC FIELDS, LASER BEAMS, CONVOLUTION, CORRELATORS, GALLIUM COMPOUNDS, INTEGRATED SYSTEMS, GADOLINIUM COMPOUNDS, BEAMS(RADIATION), ORTHOGONALITY, SPECTRUM ANALYZERS, SUBSTRATES, THIN FILMS, MICROWAVES, STRIP TRANSMISSION LINES, GARNET, POLARIZATION, MAGNETOSTATICS, BIAS, FERRITES, WAVES, ANTENNAS, SIGNALS

Subject Categories : Electricity and Magnetism
      Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE