logo

For the Inventor, By the Inventor

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.:

US 11231299 B1

PDFFull Text
Date of Patent:
Jan. 25, 2022

Filed:

Jul. 31, 2019

High-performance distributed fiber sensing system based on ehz ultrafast pulse scanning

Applicant:

Laser Institute of Shandong Academy of Science, Jining, CN;

Inventors:

Ying Shang, Ji'nan, CN;

Chen Wang, Ji'nan, CN;

Chang Wang, Ji'nan, CN;

Jiasheng Ni, Ji'nan, CN;

Wenan Zhao, Ji'nan, CN;

Chang Li, Ji'nan, CN;

Bing Cao, Ji'nan, CN;

Sheng Huang, Ji'nan, CN;

Yingying Wang, Ji'nan, CN;

Yanbin Wu, Ji'nan, CN;

Assignee:

LASER INSTITUTE OF SHANDONG ACADEMY OF SCIENCE, Jining, CN;

Attorney:

Reising Ethington, P.C.

Primary Examiner:

Dominic J Bologna

Int. Cl.
CPC ...
G01D 5/353 (2006.01);
U.S. Cl.
CPC ...
G01D 5/35361 (2013.01); G01D 5/35325 (2013.01); G01D 5/35387 (2013.01);
Abstract

A high-performance distributed fiber sensing system based on EHz ultrafast pulse scanning. During testing of a disturbance signal, an internally frequency converted pulse light emitted by an EHz ultrafast pulse scanning laser enters a sensing fiber after passing through a circulator, and a backward Rayleigh scattering signal transmitted by the sensing fiber enters an unbalanced Michelson interferometer after passing through a coupler. By designing an arm length difference between two interference arms, interferences sequentially occur for the backward Rayleigh scattering light at a position where lengths of two adjacent arms differ. A signal received after passing through the unbalanced Michelson interferometer includes a phase difference signal caused by an external disturbance signal in the sensing fiber. Finally, variations of the phase difference signal over time are demodulated by using a phase demodulation unit, so that a dynamic measurement of the disturbance signal in the sensing fiber may be performed.

Find Patent Forward Citations

Shang, Ying. (2022). High-performance distributed fiber sensing system based on ehz ultrafast pulse scanning (U.S. Patent No. 11231299). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/11231299

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Loading…