Optical Fiber Humidity Sensor With Enhanced Sensitivity by Double-Sided Contact Film

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

IEEE Sensors Journal Pub Date : 2024-11-11 DOI:10.1109/JSEN.2024.3491817

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

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引用次数: 0

Abstract

A highly sensitive humidity sensor based on open cavity fiber Fabry-Perot interferometer (FPI) with double-sided contact film is proposed. The sensor is fabricated by inserting a section of single-mode fiber (SMF) into a hollow-core fiber (HCF), and coating with polyvinyl alcohol (PVA) on the end of HCF. The difference in diameter between the two fibers is used to form an air channel so that both the left and right sides of the moisture-sensitive membrane can interact with moisture, which enhances the sensitivity. The humidity characteristics of the sensors with different cavity lengths are investigated experimentally. The results show that in the relative humidity range of 35%–85%RH, the sensor with a cavity length of

$100~\mu $

m has a high sensitivity of 2.103 nm/%RH. By comparing the humidity performances of the open cavity with the closed cavity, it is verified that the sensitivity of the open cavity sensor is specifically increased to 1.56 times that of the closed cavity. The open cavity sensor exhibits high sensitivity, simple structure, and rapid response time.

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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