Fiber optic pressure sensor with reflecting optical structure for the simultaneous measurment of temperature

Xiaoping Zheng; Yanbiao Liao; KaiDe Zha

doi:10.1117/12.252163

24 September 1996 Fiber optic pressure sensor with reflecting optical structure for the simultaneous measurment of temperature

Xiaoping Zheng, Yanbiao Liao, KaiDe Zha

Author Affiliations +

Proceedings Volume 2895, Fiber Optic Sensors V; (1996) https://doi.org/10.1117/12.252163
Event: Photonics China '96, 1996, Beijing, China

Abstract

A novel fiber-optic pressure sensor with reflecting optical structure for the simultaneous measurement of temperature is presented. The operation principle of the sensor is based on the photoelastic effect and the temperature signal is extracted from the fluctuation of the quasi working point of the sensor due to the thermal effect of the wave plate. The wave plate used here is not the 1/4 lambda as used in typical photoelastic pressure sensors in order to obtain the best response of linearity. Two kinds of bridge compensation techniques are used for the pressure and the temperature respectively. The experimental results show that once the temperature is determined, the fluctuation of the pressure output can be eliminated, and more accurate pressure meter is available.

Citation Download Citation

Xiaoping Zheng, Yanbiao Liao, and KaiDe Zha "Fiber optic pressure sensor with reflecting optical structure for the simultaneous measurment of temperature", Proc. SPIE 2895, Fiber Optic Sensors V, (24 September 1996); https://doi.org/10.1117/12.252163

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