Patent · US Active

Sweep-free stimulated Brillouin scattering-based fiber optical sensing

US8800375B2 · kind B2 · utility

0Cited by

6References

30Claims

0Family size

Assignee

University of Southern California · US

Inventors

Asher Voskoboinik · Los Angeles, US
Alan E. Willner · Los Angeles, US
Moshe Tur · Nes Ziona, IL

Key dates

Filing date	Mar 2, 2012
Grant date	Aug 12, 2014
Priority date	—
Expiry date	Oct 6, 2032

Classification

Technology area (CPC G)Physics
CPC primaryG01D5/35387
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

Methods and systems used to perform sweep-free stimulated Brillouin scattering-based fiber optical sensing are described. In one aspect, a method includes interrogating different parts of a Brillouin gain spectrum using multiple optical tones in an optical fiber. The interrogating includes sending at least two pump tones into the optical fiber from one end of the optical fiber, such that a frequency spacing between the pump tones is larger than a width of the Brillouin gain spectrum. The interrogating also includes sending at least two probe tones into the optical fiber from another end of the optical fiber, such that a frequency spacing between the probe tones is different from the frequency spacing between the pump tones. The method further includes generating a sensing output based on the interrogating.

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