Abstract
In this paper, a Fabry-Pérot interferometer microprobe was constructed based on microfiber taper and hollow microfiber cone cavity. The interference cavity length of the Fabry-Pérot structure can be flexibly changed by moving the microfiber taper in the hollow microfiber. Polydimethylsiloxane solution was filled into the air cavity of the Fabry-Pérot interferometer to build a Fabry-Pérot temperature-sensitive microprobe with a stable structure by coaxially fixing the microfiber taper in the hollow fiber. The temperature sensitivity reached up to 2.41 nm/°C. The triple-repeated measurements and stability tests were experimentally verified with an excellent sensing performance. This small, compact, and end-sealed temperature-sensitive probe will push forward the development of wearable or implantable sensors.
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