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:
May. 04, 1993
Filed:
Dec. 20, 1991
David A Rockwell, Santa Monica, CA (US);
John L Bartelt, Camarillo, CA (US);
Hughes Aircraft Company, Los Angeles, CA (US);
Abstract
An optical beam amplification and delivery system and method employs a central station with a laser oscillator, a laser amplifier and a phase conjugate mirror (PCM). Low power, near diffraction limited laser beams are delivered to each of a plurality of local stations through single-mode polarization preserving fibers. From the local stations the low power beams are transmitted back to the central station through high power multi-mode optical fibers. At the central station the received beams are amplified, phase conjugated and transmitted back through the amplifier and multi-mode fibers to their respective local stations. Distortions imposed upon the beams by the multi-mode fibers during transmission back to the central station, and by the amplifier, are compensated during the return path, providing high power yet near diffraction limited beam quality at the local stations. Attenuation through stimulated Brillouin scattering (SBS) is inhibited by selecting an appropriate aggregate diameter for the multi-mode fibers.