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. 31, 2006
Filed:
May. 09, 2002
Alan John Rogers, Bookham, GB;
Alan John Rogers, Bookham, GB;
University of Surrey, Surrey, GB;
Abstract
A method of and apparatus for determining the spatial distribution of polarisation properties of an optical fiber (). Pulses () of light are transmitted along the optical fiber () and the polarisation state of light backscattered from portions e and elements R of the optical fiber () detected. A spatial distribution of linear retardance δ, orientation of linear retardance axes q and circular retardance axes can be accurately determined. This has application in the analysis of Polarisation Mode Dispension (PMD) in telecommunications as well as, inter alia, strain, stress, temperature and electric current and voltage measurement using optical fibers.