Widely sensitive optical humidity module by using acrylic resin and a position sensitivity detector

Yu, Hyong Su; Yu, Nam; Rim, Jong Ai; Jo, Myong Jin

doi:10.1007/s11082-020-02536-w

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2021

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“…A response time of 15 s was reported, and a dynamic range of 40%RH–95%RH. Hyong Su Yu et al [ 177 ] explored the use of humidity-induced refraction change and an electrical position sensor to measure RH. Free-space light passes through an acrylic resin film, where the humidity-dependent RI changes the lateral position of light output and thus the position on the position sensor.…”

Section: Literature and The State-of-the-artmentioning

confidence: 99%

Review of Optical Humidity Sensors

Rao

Zhao

et al. 2021

Sensors

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Optical humidity sensors have evolved through decades of research and development, constantly adapting to new demands and challenges. The continuous growth is supported by the emergence of a variety of optical fibers and functional materials, in addition to the adaptation of different sensing mechanisms and optical techniques. This review attempts to cover the majority of optical humidity sensors reported to date, highlight trends in design and performance, and discuss the challenges of different applications.

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Section: Literature and The State-of-the-artmentioning

confidence: 99%