Kilometers-Range Dark-Pulse Brillouin Optical Time Domain Analyzer with Centimeters Spatial Resolution

Author

Li, Luming ; Yang, Jihai ; Liu, Lei ; Zhang, Zhiguo ; Chen, Xue ; Zhang, Min

Author_Institution

Dept. of Commun., Jiangxi Electr. Power Inf. & Commun. Co., Nanchang, China

fYear

2010

fDate

19-21 June 2010

Firstpage

1

Lastpage

4

Abstract

A Dark-Pulse Brillouin Optical Time Domain Analyzer (BOTDA) configuration has been proposed to prolong the total sensing length by measuring both Brillouin Gain and Loss effect along fiber. The detected Brillouin signal will be identified by subtracting the two sided band of the Optical Carrier Suppressed (OCS) Stokes light. Due to the innovated configuration, the distributed Brillouin sensor developed for this study achieves a much higher total sensing length without severe received Brillouin Power depletion. The simulations results demonstrated that with the same launched Stokes power, the total sensing length will be prolonged for at least one time with less than 3 dB received Power decrease.

Keywords

Brillouin spectra; fibre optic sensors; optical fibre testing; Brillouin gain effect; Brillouin loss effect; Brillouin power depletion; dark-pulse Brillouin optical time domain analyzer; distributed Brillouin sensor; optical carrier suppressed stokes light; spatial resolution; total sensing length; Gain measurement; Length measurement; Loss measurement; Optical fiber losses; Optical fiber sensors; Optical sensors; Signal processing; Spatial resolution; Time domain analysis; Time measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Photonics and Optoelectronic (SOPO), 2010 Symposium on

Conference_Location

Chengdu

Print_ISBN

978-1-4244-4963-7

Electronic_ISBN

978-1-4244-4964-4

Type

conf

DOI

10.1109/SOPO.2010.5504357

Filename

5504357