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.:

US 7903977 B1

PDF
Full Text
Expired
Date of Patent:
Mar. 08, 2011

Filed:

Oct. 06, 2005
Applicants:

Gregory G. Macdonald, Owasso, OK (US);

James J. Sluss, Jr., Broken Arrow, OK (US);

Inventors:

Gregory G. MacDonald, Owasso, OK (US);

James J. Sluss, Jr., Broken Arrow, OK (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 10/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

A fiber optic communication system including a fiber optic link, a transmitter system and a receiver system. The transmitter system includes a laser source producing a light beam, and a polarization controller receiving the light beam and providing an expected pattern of changing states of polarization to the light beam to output light signals into the fiber optic link to cause the expected pattern of changing states of polarization to be transmitted along the fiber optic link. The receiver system is provided with a polarization analyzer, and a light detector. The light detector receives the light signals transmitted by the transmitter, and forwards data indicative of the light signals to the polarization analyzer. The polarization analyzer analyzing the data with an inverse polarization reference frame and generates an alert based on deviations of the data from the expected pattern of changing states of polarization.


Find Patent Forward Citations

MacDonald, Gregory. (2011). Method for polarization-based intrusion monitoring in fiberoptic links (U.S. Patent No. 7903977). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7903977

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