Title :
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
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;
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
DOI :
10.1109/SOPO.2010.5504357
