23 April 2017 Ultra-sensitive wide dynamic range temperature sensor based on in-fiber Lyot interferometer
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Proceedings Volume 10323, 25th International Conference on Optical Fiber Sensors; 103234R (2017) https://doi.org/10.1117/12.2265847
Event: 25th International Conference on Optical Fiber Sensors, 2017, Jeju, Korea, Republic of
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.
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Hamed Nikbakht, Hamed Nikbakht, Mohamad Hosein Poorghdiri Isfahani, Mohamad Hosein Poorghdiri Isfahani, Hamid Latifi, Hamid Latifi, } "Ultra-sensitive wide dynamic range temperature sensor based on in-fiber Lyot interferometer", Proc. SPIE 10323, 25th International Conference on Optical Fiber Sensors, 103234R (23 April 2017); doi: 10.1117/12.2265847; https://doi.org/10.1117/12.2265847
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