PMMA Microsphere-Based Fabry-Perot Fiber-Optic Humidity Sensor

IF 4.3 2区综合性期刊 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Sensors Journal Pub Date : 2025-01-10 DOI:10.1109/JSEN.2025.3525655

Xiangming He;Huaping sGong;Weichen Li;Ben Xu;Chunliu Zhao

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引用次数: 0

Abstract

Polymethyl methacrylate (PMMA) microsphere-based Fabry-Perot (F-P) fiber-optic humidity sensor is proposed. A hollow-core fiber (HCF) is spliced with a single-mode fiber (SMF), and a PMMA microsphere is inserted into the HCF. Three sensors with different PMMA microsphere sizes (110, 120, and

$130~\mu $

m) were fabricated by using PMMA microsphere as a moisture-sensitive material, and the moisture-sensing characteristics of these sensors with different cavity lengths (45, 60, 75, and

$90~\mu $

m) were measured in the range of relative humidity (RH) from 35%RH to 95%RH. The results show that the sensor with a PMMA microsphere size of

$110~\mu $

m and a cavity length of

$45~\mu $

m has the best sensitivity to humidity of 0.074 nm/%RH. Its repeatability, stability, response time, and temperature effect are also investigated. This is the first fiber-optic humidity sensor with an F-P structure using PMMA microsphere as filler instead of moisture-sensitive film or gel. Compared to moisture-sensitive film or gel that are prone to aging and hardening leading to a short service life and are prone to deliquescence under high humidity, the sensor proposed in this article has the advantages of wide measurement range that can be applied to high humidity measurement, fast response time, good long-term stability, and long service life.

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来源期刊

IEEE Sensors Journal 工程技术-工程：电子与电气

CiteScore

7.70

自引率

14.00%

发文量

2058

审稿时长

5.2 months

期刊介绍： The fields of interest of the IEEE Sensors Journal are the theory, design , fabrication, manufacturing and applications of devices for sensing and transducing physical, chemical and biological phenomena, with emphasis on the electronics and physics aspect of sensors and integrated sensors-actuators. IEEE Sensors Journal deals with the following: -Sensor Phenomenology, Modelling, and Evaluation -Sensor Materials, Processing, and Fabrication -Chemical and Gas Sensors -Microfluidics and Biosensors -Optical Sensors -Physical Sensors: Temperature, Mechanical, Magnetic, and others -Acoustic and Ultrasonic Sensors -Sensor Packaging -Sensor Networks -Sensor Applications -Sensor Systems: Signals, Processing, and Interfaces -Actuators and Sensor Power Systems -Sensor Signal Processing for high precision and stability (amplification, filtering, linearization, modulation/demodulation) and under harsh conditions (EMC, radiation, humidity, temperature); energy consumption/harvesting -Sensor Data Processing (soft computing with sensor data, e.g., pattern recognition, machine learning, evolutionary computation; sensor data fusion, processing of wave e.g., electromagnetic and acoustic; and non-wave, e.g., chemical, gravity, particle, thermal, radiative and non-radiative sensor data, detection, estimation and classification based on sensor data) -Sensors in Industrial Practice