An inline ultrasensitive temperature sensor based on liquid-filled photonic crystal fiber Mach-Zehnder modal interferometer

Youfu Geng; Xuejin Li; Xiaoling Tan; Yuanlong Deng; Yongqin Yu

doi:10.1117/12.966832

7 November 2012 An inline ultrasensitive temperature sensor based on liquid-filled photonic crystal fiber Mach-Zehnder modal interferometer

Youfu Geng, Xuejin Li, Xiaoling Tan, Yuanlong Deng, Yongqin Yu

Author Affiliations +

Proceedings Volume 8421, OFS2012 22nd International Conference on Optical Fiber Sensors; 84216U (2012) https://doi.org/10.1117/12.966832
Event: OFS2012 22nd International Conference on Optical Fiber Sensor, 2012, Beijing, China

Abstract

We propose an ultrasensitive temperature sensor based on an in-line liquid-filled photonic crystal fiber (PCF) Mach- Zehnder interferometer. It consists of a small piece of index-guiding PCF fully infiltrated by fluid and two standard single-mode fibers offset spliced with the PCF. Two core modes of LP₀₁ mode and LP₁₁ mode are conveniently utilized as optical arms to form an in-line Mach-Zehnder-type interferometer. Experimental and theoretical investigation of its response to temperature confirms that and a high temperature sensitivity up to -0.244nm/(^oC-mm) could be realized by such a compact inline liquid-filled PCF Mach-Zehnder interferometer.

Citation Download Citation

Youfu Geng, Xuejin Li, Xiaoling Tan, Yuanlong Deng, and Yongqin Yu "An inline ultrasensitive temperature sensor based on liquid-filled photonic crystal fiber Mach-Zehnder modal interferometer", Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 84216U (7 November 2012); https://doi.org/10.1117/12.966832

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