26 April 2008 Fiber ringdown-beat pressure sensors
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In this paper, we propose and experimentally demonstrate a pressure sensor based on birefringent single mode fiber FP cavity using optical heterodyne. The proof of concept device consists of a light source, a polarizer controller, a modulator, a RF generator, a single mode fiber Fabry-Perot cavity, a strain inspector, an erbium doped fiber amplifier, a filter, a polarizer, an optical spectrum analyzer, and a digital communication analyzer. The dynamic range of the proposed sensor is explored. The results demonstrate the new concept of fiber pressure sensors and the technical feasibility for pressure measurements.
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Haiyan Chen, Haiyan Chen, Qing Wang, Qing Wang, Tuomo von Lerber, Tuomo von Lerber, Seppo Honkanen, Seppo Honkanen, Franko Kueppers, Franko Kueppers, "Fiber ringdown-beat pressure sensors", Proc. SPIE 7003, Optical Sensors 2008, 70031J (26 April 2008); doi: 10.1117/12.771132; https://doi.org/10.1117/12.771132

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