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:
Oct. 14, 2008
Filed:
Dec. 21, 2006
Paul E. Sanders, Madison, CT (US);
Edward M. Dowd, Madison, CT (US);
Andrew S. Kuczma, Clinton, CT (US);
Trevor W. Macdougall, Simsbury, CT (US);
Brian J. Pike, Wallingford, CT (US);
Paul E. Sanders, Madison, CT (US);
Edward M. Dowd, Madison, CT (US);
Andrew S. Kuczma, Clinton, CT (US);
Trevor W. MacDougall, Simsbury, CT (US);
Brian J. Pike, Wallingford, CT (US);
Weatherford/Lamb, Inc., Houston, TX (US);
Abstract
Methods and apparatus provide for birefringent waveguides suitable for optical systems exhibiting polarization dependence such as interferometer sensors including Sagnac interferometric fiber optic gyroscopes (IFOG). The waveguides, for some embodiments, may offer single polarization performance over lengths of about a kilometer or more due to polarization dependent attenuation. According to some embodiments, the waveguides incorporate a pure silica core for resistance to radiation-induced attenuation (RIA).