Paper Title:
Novel Optical Fiber Gas Sensing System Based on FBG Filtering
  Abstract

Based on law of Beer-Lambert, a novel optical fiber gas sensing system is designed to determine the concentration of gas. The narrow-band filtering characteristic of optical fiber Bragg grating is used by this system to produce the narrow spectrum light signal which is wanted in difference absorption measuring. The system has full optical fiber structure, which is mainly composed by super luminescent emitting diode (SLED), optical fiber of 10km, optical fiber gas detector, optical fiber isolator, optical fiber coupler network, optical fiber detecting grating, photoelectric detector and data processing unit. The aspheric objective optical fiber collimator is adopted by this system to compose optical fiber gas sensing detector, which enhances the optic stability of the detector, diminishes the injection loss and makes the echo signal of the optical fiber detector greatly diminished. Experimental data and results show that this system has its feasibility and it can be used for real time monitoring of gas concentration in the domains of colliery and natural gas station, etc.

  Info
Periodical
Advanced Materials Research (Volumes 295-297)
Chapter
Chapter 1: Materials Properties
Edited by
Pengcheng Wang, Liqun Ai, Yungang Li, Xiaoming Sang and Jinglong Bu
Pages
1021-1028
DOI
10.4028/www.scientific.net/AMR.295-297.1021
Citation
S. T. Wang, P. W. Zhang, L. Gong, X. Q. Shao, "Novel Optical Fiber Gas Sensing System Based on FBG Filtering", Advanced Materials Research, Vols. 295-297, pp. 1021-1028, 2011
Online since
July 2011
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Price
$32.00
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