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:
Sep. 20, 2005
Filed:
Jan. 22, 2002
Raymond Mark Bell, Jr., Redwood City, CA (US);
Patrick Elliott Perkins, Sunnyvale, CA (US);
Lawrence Lowell Ames, San Jose, CA (US);
William Walter Anderson, Half Moon Bay, CA (US);
Raymond Mark Bell, Jr., Redwood City, CA (US);
Patrick Elliott Perkins, Sunnyvale, CA (US);
Lawrence Lowell Ames, San Jose, CA (US);
William Walter Anderson, Half Moon Bay, CA (US);
Lockheed Martin Corporation, Bethesda, MD (US);
Abstract
A method for performing optical signal and beam distribution in a heterodyne interferometer. A planar lightwave circuit is provided including a plurality of waveguide optical transmission elements and an input coupler and an output coupler arranged along the optical transmission elements. Optical pathlengths of the transmission elements are matched between the input coupler and the output coupler to compensate for thermal effects. Reference and measurement optical phases are determined employing the input coupler and the output coupler.