Raman-based distributed temperature sensor with simplex coding and link optimization

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In this letter, a coded, Raman-based distributed temperature sensor system using 255-bit Simplex coded optical time domain reflectometry (OTDR) and optimized sensing link composed of cascaded fibers with different Raman coefficients, is proposed. This system is compared to a system with an uncoded OTDR on standard single-mode fiber, demonstrating significant enhancement in the interrogation distance (19.5 km from coding gain, and 9.6 km from link optimization). Total sensing range of 37 km at 17-m/3-K spatial/temperature resolution were achieved, while employing conventional low power (80 mW) laser diodes. .
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Issue Date
2006-09
Language
English
Article Type
Article
Keywords

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Citation

IEEE PHOTONICS TECHNOLOGY LETTERS, v.18, no.17, pp.1879 - 1881

ISSN
1041-1135
DOI
10.1109/LPT.2006.881239
URI
http://hdl.handle.net/10203/88745
Appears in Collection
NT-Journal Papers(저널논문)
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