High temperature sensor based on an in-fibre Fabry-Perot cavity

Oliver Schneller; Jinesh Mathew; William N. MacPherson; Robert R. J. Maier

doi:10.1117/12.2059651

2 June 2014 High temperature sensor based on an in-fibre Fabry-Perot cavity

Oliver Schneller, Jinesh Mathew, William N. MacPherson, Robert R. J. Maier

Proceedings Volume 9157, 23rd International Conference on Optical Fibre Sensors; 91578L (2014) https://doi.org/10.1117/12.2059651
Event: OFS2014 23rd International Conference on Optical Fiber Sensors, 2014, Santander, Spain

Abstract

We present the fabrication, characterization and encapsulation of a fibre optic temperature sensor based upon a micro Fabry-Perot (F-P) cavity. The F-P cavity is formed between a reflective in-fibre metallic splice and the air-fibre boundary at the end of the sensor. A change in temperature modifies the optical cavity length and this is observed as a shift in the reflected interference spectrum. The temperature resolution of the sensor is <10 °C. The sensor can reliably operate for high temperature measurement up to 1000 °C. Furthermore a sealed off capillary is used to avoid strain transfer to the sensor in embedded applications.

Citation Download Citation

Oliver Schneller, Jinesh Mathew, William N. MacPherson, and Robert R. J. Maier "High temperature sensor based on an in-fibre Fabry-Perot cavity", Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 91578L (2 June 2014); https://doi.org/10.1117/12.2059651

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