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Ultra-sensitive wide dynamic range temperature sensor based on in-fiber Lyot interferometer
Author(s): Hamed Nikbakht; Mohamad Hosein Poorghdiri Isfahani; Hamid Latifi
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Paper Abstract

An in-fiber Lyot interferometer for temperature measurement is presented. The sensor utilizes high temperature-dependence of the birefringence in Panda polarization maintaining fibers to achieve high resolution in temperature measurements. Temperature variation modulates the phase difference between the polarization modes propagating in different modes of the Panda fiber. The Lyot interferometer produces a spectrum which varies with the phase difference. Therefore, by monitoring this spectrum a high resolution of 0.003°C was achieved. A fiber Bragg grating is added to the setup to expand its dynamic range. This sensor does not need complicated fabrication process and can be implemented in many applications.

Paper Details

Date Published: 23 April 2017
PDF: 4 pages
Proc. SPIE 10323, 25th International Conference on Optical Fiber Sensors, 103234R (23 April 2017); doi: 10.1117/12.2265847
Show Author Affiliations
Hamed Nikbakht, Shahid Beheshti Univ. (Iran, Islamic Republic of)
Mohamad Hosein Poorghdiri Isfahani, Shahid Beheshti Univ. (Iran, Islamic Republic of)
Hamid Latifi, Shahid Beheshti Univ. (Iran, Islamic Republic of)


Published in SPIE Proceedings Vol. 10323:
25th International Conference on Optical Fiber Sensors
Youngjoo Chung; Wei Jin; Byoungho Lee; John Canning; Kentaro Nakamura; Libo Yuan, Editor(s)

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