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

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

11 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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title = "High-sensitivity whispering-gallery mode sensor for simultaneous measurement of humidity and temperature",

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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JO - Optics Letters

JF - Optics Letters

IS - 2

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

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