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Proceedings Paper

30-km distributed optical fiber Raman photon temperature lidar
Author(s): Zaixuan Zhang; Honglin Liu; Ning Guo; Jianfeng Wang; Xiaobiao Wu; Xiangdong Yu; Haiqi Feng; Insoo S. Kim
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Paper Abstract

The optical fiber Raman temperature (OFRT) Lidar is a real time, on line and multi-point temperature measurement system. 30k spot temperature information on space field can be measured and located the position by 30km OFRT Lidar It is a new technology integration of optical-mechanic-electric and computer. The system can take real time, on line measurement of spatial temperature field. In the system, optical fibers are both transmission media and sensing media. The intensity of anti-stokes Raman backscattering of optical fiber is modulated by the spatial temperature field where the optical fiber is laid. After signal processing and demodulation, the information of temperature can be extracted from the noise and can be displayed in real time. In time domain, using the velocity of light wave in optical fiber, the time interval ofback-direction light wave and optical fiber OTDR technology The amplification of anti-stokes Rairan spontaneous scattering (ARS) and the temperature effect have been first observed and applied to OFRT Lidar. The performance of OFRT Lidar is following: fiber length : 25.2km; temperature measuring range: O-lOOC(can be expand) temperature uncertainty: 2 C : temperature resolution: 0. 1 ; spatial resolution: Sm: measurement time: 5mm; Main unit operation temperature range: O—40t .The optical fiber sensor probes and the software for signal processing are also discussed. Keywords: Optical Fiber Raman Temperature (OFRT) Lidar, Optic Time Domain Reflection (OTDR),distributed optical fiber Raman photons temperature sensors, the temperature effect of Raman backscattering, Rayleigh backscattering, ZX band backscattering spectrum, optical fiber sensor probe.

Paper Details

Date Published: 21 March 2003
PDF: 5 pages
Proc. SPIE 4893, Lidar Remote Sensing for Industry and Environment Monitoring III, (21 March 2003); doi: 10.1117/12.466088
Show Author Affiliations
Zaixuan Zhang, China Institute of Metrology (China)
Honglin Liu, China Institute of Metrology (China)
Ning Guo, China Institute of Metrology (China)
Jianfeng Wang, China Institute of Metrology (China)
Xiaobiao Wu, China Institute of Metrology (China)
Xiangdong Yu, China Institute of Metrology (China)
Haiqi Feng, China Institute of Metrology (China)
Insoo S. Kim, Korea Electrotechnology Research Institute (South Korea)

Published in SPIE Proceedings Vol. 4893:
Lidar Remote Sensing for Industry and Environment Monitoring III
Upendra N. Singh; Toshikasu Itabe; Zhishen Liu, Editor(s)

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