Simple refractometer based on in-line fiber interferometers

Ó. Esteban; R. Martínez Manuel; M. G. Shlyagin

doi:10.1117/12.2194604

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28 September 2015 Simple refractometer based on in-line fiber interferometers

Ó. Esteban, R. Martínez Manuel, M. G. Shlyagin

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Proceedings Volume 9634, 24th International Conference on Optical Fibre Sensors; 963437 (2015) https://doi.org/10.1117/12.2194604
Event: International Conference on Optical Fibre Sensors (OFS24), 2015, Curitiba, Brazil

Abstract

A very simple but accurate optical fiber refractometer based on the Fresnel reflection in the fiber tip and two in-line low-reflective mirrors for light intensity referencing is reported. Each mirror was generated by connecting together 2 fiber sections with FC/PC and FC/APC connectors using the standard FC/PC mating sleeve. For the sensor interrogation, a standard DFB diode laser pumped with a sawtooth-wave current was used. A resolution of 6 x 10-4 was experimentally demonstrated using different liquids. A simple sensor construction and the use of low cost components make the reported system interesting for many applications.

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Ó. Esteban, R. Martínez Manuel, and M. G. Shlyagin "Simple refractometer based on in-line fiber interferometers", Proc. SPIE 9634, 24th International Conference on Optical Fibre Sensors, 963437 (28 September 2015); https://doi.org/10.1117/12.2194604

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