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:
Apr. 26, 2016
Filed:
Dec. 16, 2011
Tiegen Liu, Tianjin, CN;
Kun Liu, Tianjin, CN;
Zhenyang Ding, Tianjin, CN;
Junfeng Jiang, Tianjin, CN;
Dingjie LI, Tianjin, CN;
Tiegen Liu, Tianjin, CN;
Kun Liu, Tianjin, CN;
Zhenyang Ding, Tianjin, CN;
Junfeng Jiang, Tianjin, CN;
Dingjie Li, Tianjin, CN;
TIANJIN UNIVERSITY, Tianjin, CN;
Abstract
This invention relates to a distributed disturbance sensing device based on polarization sensitive optical frequency domain reflectometry (OFDR) and the related demodulation thereof. The device, adopting OFDR, polarization controlling and analysis techniques, consists of a ultra-narrow linewidth tunable laser source module, polarization generating and polarization splitting balanced detecting module, laser source optical frequency and phase monitoring module, high-speed optical switch and so on to establish a large-scale and long-distance optical sensing network. The demodulation method consists of analysis the polarization information from sensing optical fiber, the method of suppressing and compensating of the non-linear optical frequency and the laser phase noise, super-resolution analyzing, advanced denoising method and the polarization information analysis method based on Jones and Mueller's matrices using distributed wave plate model of optical fiber.