The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 11, 1986
Filed:
Oct. 28, 1983
John N Lee, Silver Spring, MD (US);
Arthur D Fisher, Alexandria, VA (US);
The United States of America as represented by the Secretary of the Navy, Washington, DC (US);
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.