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Chinese Optics Letters

Chinese Optics Letters

| PUBLISHED MONTHLY BY CHINESE LASER PRESS AND DISTRIBUTED BY OSA

  • Vol. 5, Iss. 2 — Feb. 10, 2007
  • pp: 121–124

Fiber-distributed multi-channel open-path H2S sensor based on tunable diode laser absorption spectroscopy

Dong Chen, Wenqing Liu, Yujun Zhang, Jianguo Liu, Ruifeng Kan, Min Wang, Xi Fang, and Yiben Cui  »View Author Affiliations


Chinese Optics Letters, Vol. 5, Issue 2, pp. 121-124 (2007)


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Abstract

Tunable diode laser based gas detectors are now being used in a wide variety of applications for safety and environmental interest. A fiber-distributed multi-channel open-path H2S sensor based on tunable diode laser absorption spectroscopy (TDLAS) is developed, the laser used is a telecommunication near infrared distributed feed-back (DFB) tunable diode laser, combining with wavelength modulation spectroscopy technology, a detection limit of 20 ppm.m is demonstrated. Multi-channel detection is achieved by combining optical fiber technique. An on-board reference cell provides on-line sensor calibration and almost maintenance-free operation. The sensor is suitable for large area field H2S monitoring application.

© 2007 Chinese Optics Letters

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(300.6260) Spectroscopy : Spectroscopy, diode lasers
(300.6340) Spectroscopy : Spectroscopy, infrared
(300.6380) Spectroscopy : Spectroscopy, modulation

Citation
Dong Chen, Wenqing Liu, Yujun Zhang, Jianguo Liu, Ruifeng Kan, Min Wang, Xi Fang, and Yiben Cui, "Fiber-distributed multi-channel open-path H2S sensor based on tunable diode laser absorption spectroscopy," Chin. Opt. Lett. 5, 121-124 (2007)
http://www.opticsinfobase.org/col/abstract.cfm?URI=col-5-2-121

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