Easy-to-Fabricate UV-Glue-Based Cascaded Fabry–Perot Fiber Sensor Probe for Temperature Measurement

Autor: Xuehao Hu, Hongyu Fu, Pengcheng Li, Carlos Marques, Chuanxin Teng, Hang Qu, Christophe Caucheteur
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: Photonics, Vol 11, Iss 2, p 111 (2024)
Druh dokumentu: article
ISSN: 2304-6732
DOI: 10.3390/photonics11020111
Popis: In this paper, we propose an in-line fiber sensor probe based on UV-glue-assisted cascaded Fabry–Perot cavities for temperature measurement. The UV-curable adhesive in the sensing cavity plays an important role due to its high thermo-optic coefficient. We show that the temperature sensitivity depends on the optical path length difference between both cavities. We report a maximum value of 12.57 nm/°C in the range of 20 to 30 °C. This original sensor architecture features a low cost and simple structure that can be straightforwardly manufactured with readily available materials and a short production time.
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