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《Journal of Beijing Institute of Machinery》 1994-01
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An Optical Fibre Remote Sensing System of Displacement Generated by White Light Interferometer

Li Dong Qiu Huifu  
A new type of optical fibre remote sensing system of low-level CH_4gas inair is studied in this research work.it is realized for the first time by a method employing two cascade in terferometers connected with optical fibres for measuring passively the CH_4density in air. The key of the technique is the remote measuring of the optical path difference. Based on the present experiments,the measuring accuracy of the system is± 0.11%(1σ),i.e.,2.2% of the lower explosion limit of CH_4 density in air.This result sup- ports the conclusion that the fully optical CH_4 remote sensing system can be extensively used for the detection and monitoring of CH_4 in chemical industrial and fuel mining com- plexes as well as in residential area.
【CateGory Index】: TH744.3
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【Co-references】
Chinese Journal Full-text Database 10 Hits
1 LI Chuan\ ,\ ZHANG Yimo\ ,\ LIU Tiegen\ ,\ CHEN Ximing\ ,\ LI Xin (The Key Laboratory of Optoelectronics Information Science & Technology, EMC, The Institute of Optoelectronics & Precision Instrument, Tianjin University, Tianjin, PRC, 300072);Optic Fiber Sensors of Full-Fiberoptic White Light Interference Type[J];Journal of Transcluction Technology;2001-02
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9 HE Yong hui 1, JIANG Jian feng 2, ZHAO Wan sheng 3 (1 Baosteel Research Institute, Shanghai 201900, China) (2 Shanghai Jiaotong University, Shanghai 200030, China) (3 Harbin Institute of Technology, Harbin 150001, China);Surface 3D profiler based on scanning white light interferometry method[J];Optical Technology;2001-02
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