Polarimetric DBR fiber laser sensor for strain-temperature discrimination

L. Rodriguez-Cobo; M. A. Quintela; I. Laarossi; J. M. Lopez-Higuera

doi:10.1117/12.2059551

2 June 2014 Polarimetric DBR fiber laser sensor for strain-temperature discrimination

L. Rodriguez-Cobo, M. A. Quintela, I. Laarossi, J. M. Lopez-Higuera

Proceedings Volume 9157, 23rd International Conference on Optical Fibre Sensors; 91572B (2014) https://doi.org/10.1117/12.2059551
Event: OFS2014 23rd International Conference on Optical Fiber Sensors, 2014, Santander, Spain

Abstract

A polarimetric Distributed Bragg Reflector (DBR) laser sensor in a low birefringent Er-doped fiber has been proposed. The spectral overlap of two uniform fiber Bragg gratings (FBG) has been employed as filtering technique to achieve a Single Longitudinal Mode (SLM) regime. By measuring the RF beat frequency between the two orthogonal polarized lasing modes and the absolute wavelength of one mode, both strain and temperature has been determined simultaneously.

Citation Download Citation

L. Rodriguez-Cobo, M. A. Quintela, I. Laarossi, and J. M. Lopez-Higuera "Polarimetric DBR fiber laser sensor for strain-temperature discrimination", Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 91572B (2 June 2014); https://doi.org/10.1117/12.2059551

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