V-groove all-fiber intermodal Mach-Zehnder interferometer and its high-temperature sensing application

Zhen Yin; Youfu Geng; Xuejin Li; Xiaoling Tan; Rong Gao

doi:10.1117/12.2058840

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2 June 2014 V-groove all-fiber intermodal Mach-Zehnder interferometer and its high-temperature sensing application

Zhen Yin, Youfu Geng, Xuejin Li, Xiaoling Tan, Rong Gao

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Proceedings Volume 9157, 23rd International Conference on Optical Fibre Sensors; 915720 (2014) https://doi.org/10.1117/12.2058840
Event: OFS2014 23rd International Conference on Optical Fiber Sensors, 2014, Santander, Spain

Abstract

Laser pulse width is the limiting factor for high spatial resolution measurement with Raman distributed temperature sensor (RDTS). Typically a 10 ns laser pulse provides a spatial resolution of 1 m. Path delay multiplexing can be used to overcome this limitation. This paper presents formalism for two path delay multiplexing, taking into account the point response function (PRF) of the RDTS.

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Zhen Yin, Youfu Geng, Xuejin Li, Xiaoling Tan, and Rong Gao "V-groove all-fiber intermodal Mach-Zehnder interferometer and its high-temperature sensing application", Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 915720 (2 June 2014); https://doi.org/10.1117/12.2058840

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