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Chinese Optics Letters

Chinese Optics Letters

| PUBLISHED MONTHLY BY CHINESE LASER PRESS AND DISTRIBUTED BY OSA

  • Vol. 7, Iss. 7 — Jul. 1, 2009
  • pp: 560–563

Improving spatial resolution in fiber Raman distributed temperature sensor by using deconvolution algorithm

Lei Zhang, Xue Feng, Wei Zhang, and Xiaoming Liu  »View Author Affiliations


Chinese Optics Letters, Vol. 7, Issue 7, pp. 560-563 (2009)


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Abstract

The deconvolution algorithm is adopted on the fiber Raman distributed temperature sensor (FRDTS) to improve the spatial resolution without reducing the pulse width of the light source. Numerical simulation shows that the spatial resolution is enhanced by four times using the frequency-domain deconvolution algorithm with high temperature accuracy. In experiment, a spatial resolution of 15 m is realized using a master oscillator power amplifier light source with 300-ns pulse width. In addition, the dispersion-induced limitation of the minimum spatial resolution achieved by deconvolution algorithm is analyzed. The results indicate that the deconvolution algorithm is a beneficial complement for the FRDTS to realize accurate locating and temperature monitoring for sharp temperature variations.

© 2009 Chinese Optics Letters

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(100.1830) Image processing : Deconvolution

Citation
Lei Zhang, Xue Feng, Wei Zhang, and Xiaoming Liu, "Improving spatial resolution in fiber Raman distributed temperature sensor by using deconvolution algorithm," Chin. Opt. Lett. 7, 560-563 (2009)
http://www.opticsinfobase.org/col/abstract.cfm?URI=col-7-7-560

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