A dual-Brillouin-peak optical fiber for simultaneous distributed strain and temperature measurement

2018 ◽  
Author(s):  
Xiaoguang Sun ◽  
Kyle Bedard ◽  
Jie Li ◽  
Bob Dyer
Keyword(s):  
Optical Fiber ◽  
Temperature Measurement ◽  
Distributed Strain

Strain-independent temperature measurement by use of a fluorescence intensity ratio technique in optical fiber

2000 ◽  
Vol 39 (18) ◽  
pp. 3050 ◽  
Author(s):  
Scott A. Wade ◽  
Stephen F. Collins ◽  
Kenneth T. V. Grattan ◽  
Gregory W. Baxter
Keyword(s):  
Optical Fiber ◽  
Temperature Measurement ◽  
Fluorescence Intensity ◽  
Intensity Ratio ◽  
Fluorescence Intensity Ratio

A review of previous studies on dam leakage based on distributed optical fiber thermal monitoring technology

Sensor Review ◽  
2021 ◽  
Vol 41 (4) ◽  
pp. 350-360
Author(s):  
Xiao Fang ◽  
Yajie Zeng ◽  
Feng Xiong ◽  
Jiang Chen ◽  
Fei Cheng
Keyword(s):  
Optical Fiber ◽  
Temperature Measurement ◽  
Monitoring System ◽  
Temperature Data ◽  
Thermal Monitoring ◽  
Monitoring Technology ◽  
Content Type ◽  
Fiber Sensing ◽  
Optical Fiber Sensing ◽  
Distributed Optical Fiber

Purpose Seepage of the dam is an important safety problem, which may cause internal erosion of the structure. In the field of seepage monitoring in civil engineering, the distributed optical fiber sensing technology based on the temperature tracing method has been paid more attention due to its unique advantages of high sensitivity, good stability and high resolution. The purpose of this paper is to make a review of the existing related research, so as to facilitate the later scholars to understand and further study more systematically. Design/methodology/approach In this paper, three kinds of commonly used distributed fiber temperature measurement technologies are introduced. Based on the working principle, monitoring system, theoretical analysis, experimental research and engineering application of the fiber seepage monitoring technology, the present situation of dam seepage monitoring based on distributed fiber is reviewed in detail and their advantages and disadvantages are compared. Findings The thermal monitoring technology of seepage measurement depends on the accuracy of optical fiber temperature measurement (including the accuracy of the system and the rationality of the discrimination method), the correct installation of optical fiber and the quantitative analysis of temperature data. The accuracy of the current monitoring system can basically meet the existing measurement requirements, but the correct installation of optical fiber and the calibration of temperature data need to be further studied for different discrimination methods, and this field has great research value. Originality/value At present, there are many applications and research studies of optical fiber sensing in the field of structural health monitoring, and there are also reviews of related aspects. However, there is little or no review only in the field of seepage monitoring. This paper summarizes the research and application of optical fiber sensing in the field of seepage monitoring. The possibility of the gradient method to find its new prospect with the development of monitoring systems and the improvement of temperature resolution is discussed. The idea of extending the seepage monitoring method based on distributed optical fiber thermal monitoring technology to other monitoring fields is also given in the paper.

An Optical Fiber Farby-Perot Temperature Sensor for Rapid Ocean Temperature Measurement

2018 ◽  
Vol 45 (12) ◽  
pp. 1210001
Author(s):  
孟华 Meng Hua ◽  
李海洋 Li Haiyang ◽  
曹占启 Cao Zhanqi
Keyword(s):  
Optical Fiber ◽  
Temperature Measurement ◽  
Temperature Sensor ◽  
Ocean Temperature

scholarly journals Direct Temperature Measurement of Melts in Continuous Copper Converter with Expendable Immersion Optical Fiber Thermometer

1996 ◽  
Vol 37 (4) ◽  
pp. 912-915 ◽  
Author(s):  
Fumihiko Ogino ◽  
Keisuke Nishimura ◽  
Susumu Okabe ◽  
Etsuji Kimura
Keyword(s):  
Optical Fiber ◽  
Temperature Measurement ◽  
Copper Converter
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