Ring cavity erbium-doped fiber for refractive index measurements
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- AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2019-107270RB-C22/ES/
- AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PDC2021-121172-C21/
- AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/TED2021-130378B-C22/
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Abstract
In this study, an interrogation system based on an erbium-doped fiber ring cavity for refractive index measurements is presented and experimentally demonstrated. This cavity ring includes a 1 × 3 coupler wherein one of the fiber output ports is used to increase the optical power of the system by means of an FBG used as a reflector. The other two output ports are used as a refractive index sensing head and reference port, respectively. An experimental demonstration of this proposed sensor system for the measurement of a distinct refractive index is presented.
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