Simple refractometer based on in-line fiber interferometers

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

doi:10.1117/12.2194604

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

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

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.

Citation Download Citation

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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KEYWORDS

Mirrors

Sensors

Interferometers

Connectors

Refractive index

Reflectivity

Head

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