Reflection-based phase-shifted long-period fiber grating for cryogenic temperature measurements

R. Martins; J. Monteiro; P. Caldas; J. L. Santos; G. Rego

doi:10.1117/12.2059529

2 June 2014 Reflection-based phase-shifted long-period fiber grating for cryogenic temperature measurements

R. Martins, J. Monteiro, P. Caldas, J. L. Santos, G. Rego

Proceedings Volume 9157, 23rd International Conference on Optical Fibre Sensors; 91571K (2014) https://doi.org/10.1117/12.2059529
Event: OFS2014 23rd International Conference on Optical Fiber Sensors, 2014, Santander, Spain

Abstract

In this work, we propose a compact sensor head to perform cryogenic temperature measurements based on a long-period fiber grating. The presented configuration enables the sensor to be interrogated in reflection since a phase-shifted is produced by Fresnel reflection on the end-face of the fiber, cleaved at a quarter-period separation distance from the end of the grating.

Citation Download Citation

R. Martins, J. Monteiro, P. Caldas, J. L. Santos, and G. Rego "Reflection-based phase-shifted long-period fiber grating for cryogenic temperature measurements", Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 91571K (2 June 2014); https://doi.org/10.1117/12.2059529

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