Micro-drilled optical fiber for enhanced laser strain sensors

R. A. Pérez Herrera; M. Bravo Acha; Pablo Roldan-Varona; D. Leandro; L. Rodriguez Cobo; J. M. Lopez-Higuera; M. Lopez-Amo

doi:10.1117/12.2539802

28 August 2019 Micro-drilled optical fiber for enhanced laser strain sensors

R. A. Pérez Herrera, M. Bravo Acha, Pablo Roldan-Varona, D. Leandro, L. Rodriguez Cobo, J. M. Lopez-Higuera, M. Lopez-Amo

Author Affiliations +

Proceedings Volume 11199, Seventh European Workshop on Optical Fibre Sensors; 111992R (2019) https://doi.org/10.1117/12.2539802
Event: Seventh European Workshop on Optical Fibre Sensors, 2019, Limassol, Cyprus

Abstract

In this work, we present an experimental measurement of temperature and strain sensitivities of a micro-drilled optical fiber (MDOF). The MDOF consisted of a quasi-randomly distributed reflector along a single mode fiber (SMF). A fiber cavity laser based on MDOF was experimentally studied, attaining a single-wavelength laser emission centered at 1568.6nm. The output power level obtained from this single-laser oscillation when pumped at 140mW was around - 9.6dBm, and an optical signal to noise ratio (OSNR) of around 45dB was measured. Although temperature sensitivities of fiber Bragg gratings used as sensors are similar to our MDOF, strain sensitivity is enhanced around one order of magnitude when the MDOF was used.

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R. A. Pérez Herrera, M. Bravo Acha, Pablo Roldan-Varona, D. Leandro, L. Rodriguez Cobo, J. M. Lopez-Higuera, and M. Lopez-Amo "Micro-drilled optical fiber for enhanced laser strain sensors", Proc. SPIE 11199, Seventh European Workshop on Optical Fibre Sensors, 111992R (28 August 2019); https://doi.org/10.1117/12.2539802

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