Miniature fiber temperature sensor based on Fabry-Perot interferometer

Daniel Kacik; Ivan Martincek; Norbert Tarjanyi

doi:10.1117/12.2263260

23 December 2016 Miniature fiber temperature sensor based on Fabry-Perot interferometer

Daniel Kacik, Ivan Martincek, Norbert Tarjanyi

Proceedings Volume 10142, 20th Slovak-Czech-Polish Optical Conference on Wave and Quantum Aspects of Contemporary Optics; 101421K (2016) https://doi.org/10.1117/12.2263260
Event: 20th Slovak-Czech-Polish Optical Conference on Wave and Quantum Aspects of Contemporary Optics, 2016, Jasna, Slovakia

Abstract

We prepared and demonstrated a compact, simple-to-fabricate, air microcavity in polydimethylsiloxane (PDMS), placed at the end of a single-mode optical fiber. The air microcavity creates a Fabry-Perot interferometer. The length of microcavity changes with change of temperature. So the wavelength shift of reference minima (maxima) of interference pattern corresponds to temperature change. For the operation of the sensor broadband light source and low-resolution optical spectral analyzer can be used. The sensor response for change of temperature is fast and occurs within a few seconds. The temperature sensitivity is 6.1 nm/°C. For optical spectral analyzer resolution 0.1 nm the smallest temperature difference possible to determine is 0.017 °C.

Citation Download Citation

Daniel Kacik, Ivan Martincek, and Norbert Tarjanyi "Miniature fiber temperature sensor based on Fabry-Perot interferometer", Proc. SPIE 10142, 20th Slovak-Czech-Polish Optical Conference on Wave and Quantum Aspects of Contemporary Optics, 101421K (23 December 2016); https://doi.org/10.1117/12.2263260

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