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. 19, 2013
Filed:
Oct. 14, 2009
Arthur H. Hartog, Martyr Worthy, GB;
Dominic Brady, Freemantle, GB;
Maxwell R. Hadley, Lyndhurst, GB;
Arthur H. Hartog, Martyr Worthy, GB;
Dominic Brady, Freemantle, GB;
Maxwell R. Hadley, Lyndhurst, GB;
Schlumberger Technology Corporation, Sugar Land, TX (US);
Abstract
To provide a polarization-diverse, heterodyne optical receiving system, a light signal is transmitted into an optical fiber having a plurality of optical sensors that are distinguishable using a multiplexing arrangement. A return light signal from the optical fiber is mixed with an optical local oscillator light signal, where the mixing outputs plural output signal portions having different polarizations. A birefringence of a particular optical sensor is determined based on the plural signal portions.