Polarimetric DBR fiber laser sensor for strain-temperature discrimination

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Identificadores
URI: http://hdl.handle.net/10902/6453
ISSN: 0277-786X
ISSN: 1996-756X
ISSN: DOI:10.1117/12.2059551
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Autoría
Rodríguez Cobo, LuisAutoridad Unican; Quintela Incera, María ÁngelesAutoridad Unican; Laarossi, IsmailAutoridad Unican; López Higuera, José MiguelAutoridad Unican
Fecha
2014
Derechos
© 2014 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic electronic or print reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
Publicado en
Proceedings of SPIE, 2014, 9157, 91572B
23rd International Conference on Optical Fibre Sensors, Santander, 2014
Editorial
SPIE Society of Photo-Optical Instrumentation Engineers
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Palabras clave
Fiber Bragg grating (FBG)
Erbium doped fiber
Fiber laser
Strain and temperature sensor
Resumen/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.
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