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:
Jan. 22, 1991
Filed:
Sep. 09, 1988
G Charmaine Gilbreath, Accokeek, MD (US);
Frederic M Davidson, Cockeysville, MD (US);
The United States of America as represented by the Secretary of the Navy, Washington, DC (US);
Abstract
An optical communications system is disclosed for correcting in real-time the wavefront distortions of a beam from a coherent optical transmitting source. The system includes a collimating lens and beam splitter for receiving a distorted wavefront signal beam and splitting the beam into a pump beam and a weaker intensity signal beam. The system includes a detector and computer for measuring the beam distortion and specifying a compensatory wavefront. The weaker intensity signal beam is modified in a 2-D spatial light modulator according to a compensatory wavefront. A photo-refractive material is used to couple energy from the pump beam to the compensated wavefront signal beam thereby producing a corrected and intensity-enhanced communications beam.