Simplified Configuration of Brillouin Optical Correlation-Domain Reflectometry

Author

Hayashi, Neisei ; Mizuno, Yosuke ; Nakamura, Kentaro

Author_Institution

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

Volume

6

Issue

5

fYear

2014

fDate

Oct. 2014

Firstpage

1

Lastpage

7

Abstract

We develop a simple and cost-efficient configuration of Brillouin optical correlation-domain reflectometry (BOCDR), the setup of which does not include an additional reference path used in standard BOCDR systems. The Fresnel-reflected light from an open end of a sensing fiber is used as reference light. The limitations of spatial resolution, measurement range, and their ratio are theoretically clarified, and then, a distributed strain measurement with a <; 100-mm spatial resolution and a 4.1-m measurement range is demonstrated with a high signal-to-noise ratio.

Keywords

Brillouin spectra; fibre optic sensors; light reflection; reflectometry; strain measurement; Brillouin optical correlation-domain reflectometry; Fresnel-reflected light; distributed strain measurement; measurement range; reference light; sensing fiber; simplified configuration; spatial resolution; Frequency modulation; Optical fiber sensors; Optical fibers; Scattering; Spatial resolution; Temperature measurement; Brillouin scattering; distributed measurement; optical fiber sensors; optical fiber sensors,; strain sensing; temperature sensing;

fLanguage

English

Journal_Title

Photonics Journal, IEEE

Publisher

ieee

ISSN

1943-0655

Type

jour

DOI

10.1109/JPHOT.2014.2361638

Filename

6917205