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. 12, 2013
Filed:
Mar. 27, 2009
Applicants:
Michael A. Roes, San Diego, CA (US);
Jonathan R. O'brien, San Diego, CA (US);
Inventors:
Michael A. Roes, San Diego, CA (US);
Jonathan R. O'Brien, San Diego, CA (US);
Assignee:
Cubic Corporation, San Diego, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 10/00 (2006.01); G02B 26/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A retroreflector coupled with a polarization rotator is provided according to some embodiments. The polarization rotator can be designed and/or configured to introduce a fraction of a wavelength phase difference in a received beam of light prior to reflecting the beam of light back toward the source of the light. By switching the state of the polarization rotator a communication signal can be modulated on the return beam of light.