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16 May 2008 Fibre refractometer based on a Fabry-Pérot interferometer
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Proceedings Volume 7004, 19th International Conference on Optical Fibre Sensors; 700446 (2008) https://doi.org/10.1117/12.786080
Event: 19th International Conference on Optical Fibre Sensors, 2008, Perth, WA, Australia
Abstract
It is described a fibre optic sensor for liquid refractive index measurement based on the visibility variations of a Fabry-Perot interferometer with interfering waves generated in a short Bragg grating and in the fibre tip (Fresnel reflection) in contact with the liquid. The sensor was characterized emerging the fibre tip in distilled water with different concentrations of ethylene glycol. A linear relation was obtained, with a readout resolution of ≈ 10-3. It was also observed that the temperature direct cross sensitivity is residual.
© (2008) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
S. F. O. Silva, O. Frazão, P. Caldas, J. L. Santos, F. M. Araújo, and L. A. Ferreira "Fibre refractometer based on a Fabry-Pérot interferometer", Proc. SPIE 7004, 19th International Conference on Optical Fibre Sensors, 700446 (16 May 2008); https://doi.org/10.1117/12.786080
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