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:
Dec. 10, 1996
Filed:
Jan. 24, 1994
Lawrence J Lembo, Torrance, CA (US);
TRW Inc., Redondo Beach, CA (US);
Abstract
A wavelength-selectable optical signal processor for creating a predetermined optical delay pattern in a signal. The system includes a succession of optical delay pathways each receiving a portion of a modulated optical beam having a predetermined wavelength. The distance each beam traverses through each delay pathway varies as a function of the predetermined wavelength of the optical beam. As a result, the distance of the optical path for any of the predetermined wavelengths creates a predetermined delay pattern across the succession of optical delay pathways. In signal processing applications the delayed optical beam can be recombined in the time domain to construct a superposition of time delayed signals yielding an agile signal processor implemented using a wavelength-reconfigurable transversal filter design. In a phased-array antenna, the present invention results in a time delay network which establishes a one-to-one correspondence between antenna beam direction and optical carrier wavelength. This permits an antenna to change beam direction simply by changing the wavelength of the optical carrier.