Patent · US Active

Long-distance polarization and phase-sensitive optical time-domain reflectometry based on random laser amplification

US9163960B2 · kind B2 · utility

1Cited by

3References

7Claims

0Family size

Assignee

University of Electronic Science and Technology of China · CN

Inventors

Yunjiang Rao · Hangzhou City, CN
Zinan Wang · Sichuan, CN
Zengling Ran · Sichuan, CN

Key dates

Filing date	Mar 9, 2014
Grant date	Oct 20, 2015
Priority date	—
Expiry date	Mar 9, 2034

Classification

Technology area (CPC G)Physics
CPC primaryG01J5/10
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A long-distance polarization and phase-sensitive reflectometry based on random laser amplification for extending a sensing distance includes a long-distance polarization and phase-sensitive reflectometry of a distributed Raman amplification based on optical fiber random lasers generated by unilateral pumps, a long-distance polarization and phase-sensitive reflectometry of a distributed Raman amplification based on optical fiber random lasers generated by bilateral pumps, and a long-distance polarization and phase-sensitive reflectometry of a Raman amplification based on a combination of optical fiber random lasers generated by unilateral pumps and a common Raman pump source, which are applied in optical fiber perturbation sensing and have a capability of greatly improving a working distance of a sensing system and a high practicability.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.