A Method for Improving BOTDR System Performance

Author

Li, Yongqian ; Wang, Jun ; Yang, Zhi

Author_Institution

Dept. of Electron. & Commun. Eng., North China Electr. Power Univ., Baoding, China

fYear

2012

fDate

21-23 May 2012

Firstpage

1

Lastpage

4

Abstract

The signal-to-noise ratio (SNR) and spatial resolution are conflicting factors in conventional Brillouin optical time domain reflectometer (BOTDR) system. Golay complementary sequence with good autocorrelation properties, can be used as probe pulse, in order to achieve a higher SNR without compromising the spatial resolution of the system. This paper discusses the composition method of Golay complementary sequences, studies the principle applying Golay complementary sequences in BOTDR system. On this basis, a heterodyne detection BOTDR sensing system using Golay complementary sequences is designed and the system performances in time and frequency domain are simulated numerically. The results show that the method can improve the SNR of the system without degrading the spatial resolution.

Keywords

Golay codes; fibre optic sensors; frequency-domain analysis; heterodyne detection; reflectometers; BOTDR system performance; Brillouin optical time domain reflectometer system; Golay complementary sequence; SNR; autocorrelation properties; frequency-domain analysis; heterodyne detection BOTDR sensing system; signal-to-noise ratio; spatial resolution; Correlation; Frequency domain analysis; Optical fibers; Scattering; Sensors; Signal to noise ratio; Spatial resolution;

fLanguage

English

Publisher

ieee

Conference_Titel

Photonics and Optoelectronics (SOPO), 2012 Symposium on

Conference_Location

Shanghai

ISSN

2156-8464

Print_ISBN

978-1-4577-0909-8

Type

conf

DOI

10.1109/SOPO.2012.6271112

Filename

6271112