Distributed Brillouin Sensing With Centimeter-Order Spatial Resolution in Polymer Optical Fibers

Author

Hayashi, Neisei ; Mizuno, Yosuke ; Nakamura, Kentaro

Author_Institution

Precision & Intell. Lab., Tokyo Inst. of Technol., Yokohama, Japan

Volume

32

Issue

21

fYear

2014

fDate

Nov.1, 1 2014

Firstpage

3999

Lastpage

4003

Abstract

We present the first demonstration of distributed strain/temperature sensing with a high spatial resolution in plastic optical fibers (POFs) based on Brillouin optical correlation-domain reflectometry. A 50-cm-long strain-applied (or heated) POF section is clearly detected with a theoretical spatial resolution of 34 cm, a high sampling rate of 3.3 Hz (per measured point), and a high signal-to-noise ratio. A 10-cm-long heated POF section is also successfully detected with a theoretical resolution of 7.4 cm. The performance limitation of this system is then discussed.

Keywords

Brillouin spectra; distributed sensors; fibre optic sensors; optical correlation; optical fibre testing; optical noise; optical polymers; reflectometry; strain measurement; strain sensors; temperature measurement; temperature sensors; POF based Brillouin optical correlation-domain reflectometry; centimeter-order spatial resolution; distributed Brillouin sensing; distributed strain sensing; distributed temperature sensing; frequency 3.3 Hz; plastic optical fibers; polymer optical fibers; signal-to-noise ratio; size 50 cm; Optical fiber sensors; Optical fibers; Scattering; Spatial resolution; Temperature measurement; Brillouin optical correlation-domain reflectometry (BOCDR); Brillouin scattering; distributed measurement; optical fiber sensing; polymer optical fibers;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/JLT.2014.2339361

Filename

6870421