High-sensitivity whispering-gallery mode sensor for simultaneous measurement of humidity and temperature

Chencheng Zhang; Shengli Pu; Weinan Liu; Tengfei Xu; Siyang Huang; Mingjue Wu; Zhe Yang; Yu Ji; Qiang Wu

doi:10.1364/ol.545686

High-sensitivity whispering-gallery mode sensor for simultaneous measurement of humidity and temperature

Chencheng Zhang, Shengli Pu, Weinan Liu, Tengfei Xu, Siyang Huang, Mingjue Wu, Zhe Yang, Yu Ji, Qiang Wu

Mathematics, Physics and Electrical Engineering

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

A novel, to the best of our knowledge, optical fiber whispering-gallery mode (WGM) sensor for simultaneously measuring humidity and temperature is proposed and investigated. The proposed sensor is realized by a polyvinyl alcohol (PVA)-coated capillary tube coupling with an optical single-mode fiber (SMF), which is integrated with a fiber Bragg grating (FBG). The as-fabricated sensor can be used not only for relative humidity (RH) sensing but also for temperature detection. The achieved humidity and temperature sensitivities are −181.2 pm/%RH and 10.5 pm/°C, respectively. The easy fabrication and very high sensitivity of the proposed sensor are attractive features for high-precision and wide-range RH sensing applications.

Original language	English
Pages (from-to)	538-541
Number of pages	4
Journal	Optics Letters
Volume	50
Issue number	2
Early online date	10 Jan 2025
DOIs	https://doi.org/10.1364/ol.545686
Publication status	Published - 15 Jan 2025

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abstract = "A novel, to the best of our knowledge, optical fiber whispering-gallery mode (WGM) sensor for simultaneously measuring humidity and temperature is proposed and investigated. The proposed sensor is realized by a polyvinyl alcohol (PVA)-coated capillary tube coupling with an optical single-mode fiber (SMF), which is integrated with a fiber Bragg grating (FBG). The as-fabricated sensor can be used not only for relative humidity (RH) sensing but also for temperature detection. The achieved humidity and temperature sensitivities are −181.2 pm/%RH and 10.5 pm/°C, respectively. The easy fabrication and very high sensitivity of the proposed sensor are attractive features for high-precision and wide-range RH sensing applications.",

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AU - Zhang, Chencheng

AU - Pu, Shengli

AU - Liu, Weinan

AU - Xu, Tengfei

AU - Huang, Siyang

AU - Wu, Mingjue

AU - Yang, Zhe

AU - Ji, Yu

AU - Wu, Qiang

PY - 2025/1/15

Y1 - 2025/1/15

N2 - A novel, to the best of our knowledge, optical fiber whispering-gallery mode (WGM) sensor for simultaneously measuring humidity and temperature is proposed and investigated. The proposed sensor is realized by a polyvinyl alcohol (PVA)-coated capillary tube coupling with an optical single-mode fiber (SMF), which is integrated with a fiber Bragg grating (FBG). The as-fabricated sensor can be used not only for relative humidity (RH) sensing but also for temperature detection. The achieved humidity and temperature sensitivities are −181.2 pm/%RH and 10.5 pm/°C, respectively. The easy fabrication and very high sensitivity of the proposed sensor are attractive features for high-precision and wide-range RH sensing applications.

AB - A novel, to the best of our knowledge, optical fiber whispering-gallery mode (WGM) sensor for simultaneously measuring humidity and temperature is proposed and investigated. The proposed sensor is realized by a polyvinyl alcohol (PVA)-coated capillary tube coupling with an optical single-mode fiber (SMF), which is integrated with a fiber Bragg grating (FBG). The as-fabricated sensor can be used not only for relative humidity (RH) sensing but also for temperature detection. The achieved humidity and temperature sensitivities are −181.2 pm/%RH and 10.5 pm/°C, respectively. The easy fabrication and very high sensitivity of the proposed sensor are attractive features for high-precision and wide-range RH sensing applications.

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High-sensitivity whispering-gallery mode sensor for simultaneous measurement of humidity and temperature

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