High-Performance Raman-Based Distributed Fiber-Optic Sensing Under a Loop Scheme Using Anti-Stokes Light Only

Author

Soto, Marcelo A. ; Signorini, Alessandro ; Nannipieri, Tiziano ; Faralli, Stefano ; Bolognini, Gabriele

Author_Institution

CEIICP, Scuola Super. Sant´´Anna, Pisa, Italy

Volume

23

Issue

9

fYear

2011

fDate

5/1/2011 12:00:00 AM

Firstpage

534

Lastpage

536

Abstract

A distributed fiber-optic temperature sensor technique inherently allowing for system calibration, compensating time-dependent variations of the fiber losses as well as local external perturbations, is proposed using a loop-scheme together with Raman anti-Stokes-only measurement. A temperature resolution enhancement with respect to a standard loop configuration is shown by experiments, providing a robust and reliable high-performance sensing technique for long sensing ranges.

Keywords

Raman spectra; calibration; distributed sensors; fibre optic sensors; optical fibre losses; temperature sensors; Raman anti-Stokes-only measurement; distributed fiber optic temperature sensor; fiber losses; high-performance sensing; local external perturbations; long sensing ranges; loop scheme; system calibration; temperature resolution enhancement; time-dependent variations; Optical fiber amplifiers; Optical fiber sensors; Temperature measurement; Temperature sensors; Optical fiber measurements; Raman scattering; optical time-domain reflectometry;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2011.2113174

Filename

5711637