Fiber Bragg grating based hot-wire anemometer with enhanced sensitivity by fiber surface frosting

Yuhan Tang,Jing Yang,Jiarui Zhang,Dajuan Lv, Liangming Xiong,Jun Yang,Xinyong Dong

Optical Fiber Technology（2024）

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摘要

•Surface frosted FBG achieves a high starting temperature.•The laser heating efficiency is improved by 2.2 times by surface frosting.•The sensitivities of the surface frosted FBG anemometer are improved by up to 313%.

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关键词

Fiber Bragg grating,Hot-wire anemometer,Optical fiber sensor

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