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. 30, 2014
Filed:
Mar. 13, 2012
Gregory D. Goodno, Los Angeles, CA (US);
Mark E. Weber, Hawthorne, CA (US);
Stanley Benjamin Weiss, Iv, Redondo Beach, CA (US);
Gregory D. Goodno, Los Angeles, CA (US);
Mark E. Weber, Hawthorne, CA (US);
Stanley Benjamin Weiss, IV, Redondo Beach, CA (US);
Northrop Grumman Systems Corporation, Falls Church, VA (US);
Abstract
A multichannel polarization stabilizer including a mixing device responsive to a sample beam and a reference beam that provides an in-phase signal including the mixed sample beam and reference beam having a relative phase of 0° and a quadrature phase signal including the mixed sample beam and reference beam having a relative phase of 90°. The stabilizer also includes a photodetector responsive to the quadrature phase signal that converts the quadrature phase signal to a quadrature phase electrical signal. A polarization demultiplexer circuit receives the quadrature phase electrical signal and measures the amplitude of a frequency tone in the sample beam and provides a polarization amplitude signal. A polarization controller receives the polarization amplitude signal and controls the reference beam to maximize the polarization amplitude signal.