DocumentCode
1496876
Title
Combination of phase modulation and coding for SNR enhancement in distributed Brillouin sensors
Author
Fernandez, Alicia ; Mao, Y. ; Lu, Chao ; Chi, Jeonghee
Author_Institution
Electr. Inf. Eng. Dept., Hong-Kong Polytech. Univ., Kowloon, China
Volume
47
Issue
8
fYear
2011
Firstpage
509
Lastpage
510
Abstract
This reported work proposes and demonstrates the benefits of a phase-coded pump using Simplex code into a distributed strain sensor based on Brillouin optical-fibre time-domain analysis technique. It is considered that the experimental results show significant signal-to-noise ratio (SNR) enhancement provided by an increasing length of the phase-coded pump with short code length (7 to 31 bits), thus allowing for strain sensing over a 30 m standard fibre with 1 cm spatial resolution.
Keywords
encoding; phase modulation; signal processing; strain sensors; Brillouin optical-fibre time-domain analysis; SNR enhancement; coding; distributed Brillouin sensor; distributed strain sensor; phase modulation; phase-coded pump; short code length; signal-to-noise ratio enhancement; simplex code; spatial resolution; strain sensing;
fLanguage
English
Journal_Title
Electronics Letters
Publisher
iet
ISSN
0013-5194
Type
jour
DOI
10.1049/el.2011.0440
Filename
5751800
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