Significance of coherent Rayleigh noise in fibre-optic distributed temperature sensing based on spontaneous Brillouin scattering

被引：30
作者：
De Souza, K. [1 ]
机构：
[1] Univ W Indies, Dept Phys, St Augustine, Trinidad Tobago
来源：
MEASUREMENT SCIENCE AND TECHNOLOGY | 2006年 / 17卷 / 05期
关键词：
fibre-optic sensors; Brillouin scattering; Rayleigh scattering; coherent Rayleigh noise;
D O I：
10.1088/0957-0233/17/5/S21
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The temperature resolution of a fibre-optic distributed temperature sensor based on taking the ratio of the temperature sensitive backscattered spontaneous Brillouin signal to the corresponding Rayleigh signal depends on the optical signal-to-noise of the receiver system and the amplitude fluctuations in the Rayleigh signal. The amplitude fluctuations or coherent Rayleigh noise have been investigated experimentally as a function of detection bandwidth, source bandwidth and spatial resolution and showed good agreement with theory.
引用
收藏
页码：1065 / 1069
页数：5
相关论文
共 28 条
[1]   EXPERIMENTAL AND THEORETICAL-STUDIES ON A DISTRIBUTED TEMPERATURE SENSOR-BASED ON BRILLOUIN-SCATTERING [J].
BAO, X ;
DHLIWAYO, J ;
HERON, N ;
WEBB, DJ ;
JACKSON, DA .
JOURNAL OF LIGHTWAVE TECHNOLOGY, 1995, 13 (07) :1340-1348
[2]   50-km single-ended spontaneous-Brillouin-based distributed-temperature sensor exploiting pulsed Raman amplification [J].
Cho, YT ;
Alahbabi, M ;
Gunning, MJ ;
Newson, TP .
OPTICS LETTERS, 2003, 28 (18) :1651-1653
[3]   DISTRIBUTED OPTICAL FIBER RAMAN TEMPERATURE SENSOR USING A SEMICONDUCTOR LIGHT-SOURCE AND DETECTOR [J].
DAKIN, JP ;
PRATT, DJ ;
BIBBY, GW ;
ROSS, JN .
ELECTRONICS LETTERS, 1985, 21 (13) :569-570
[4]   Enhancing the measurement range of a Brillouin based fiber-optic distributed temperature sensor by improving receiver sensitivity through optical preamplification [J].
De Souza, K .
FIBER OPTIC SENSOR TECHNOLOGY AND APPLICATIONS III, 2004, 5589 :325-336
[5]   Improvement of signal-to-noise capabilities of a distributed temperature sensor using optical preamplification [J].
De Souza, K. (kervooj@hotmail.com), 2001, Institute of Physics Publishing (12)
[6]   Double-pass configured fibre Mach-Zehnder interferometric optical filter for distributed fibre sensing [J].
De Souza, K ;
Wait, PC ;
Newson, TP .
ELECTRONICS LETTERS, 1997, 33 (25) :2148-2149
[7]   Characterisation of strain dependence of the Landau-Placzek ratio for distributed sensing [J].
DeSouza, K ;
Wait, PC ;
Newson, TP .
ELECTRONICS LETTERS, 1997, 33 (07) :615-616
[8]   Diode-pumped Landau-Placzek based distributed temperature sensor utilising an all-fibre Mach-Zehnder interferometer [J].
DeSouza, K ;
Lees, GP ;
Wait, PC ;
Newson, TP .
ELECTRONICS LETTERS, 1996, 32 (23) :2174-2175
[9]  
DESOUZA K, 1999, THESIS U SOUTHAMPTON, P187
[10]   Brillouin optical-fiber frequency-domain analysis for distributed temperature and strain measurements [J].
Garus, D ;
Gogolla, T ;
Krebber, K ;
Schliep, F .
JOURNAL OF LIGHTWAVE TECHNOLOGY, 1997, 15 (04) :654-662
123