Sagnac Loop Twisted Pair Microfiber Sensors Enables Simultaneous Measurement of Temperature and Pressure

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

IEEE Sensors Journal Pub Date : 2025-01-13 DOI:10.1109/JSEN.2025.3526651

Hongwei Liang;Jiaqi Fan;Jiali Du;Yu Sun;Lingling Kan;Penghui Dai;Shaoqing Wang

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引用次数: 0

Abstract

This study presents a Sagnac loop-based twisted pair microfiber sensor for simultaneous temperature and pressure monitoring. The meticulously engineered microfiber is encapsulated within a polydimethylsiloxane (PDMS) film, enhancing the sensor’s sensitivity and structural stability. This improvement leverages the PDMS high thermo-optic coefficient and low Young’s modulus, along with the strong evanescent field transmission characteristics in the twisted microfiber coupling region and the interference period change in response to external environmental variations. Numerical simulation computations and theoretical modeling further analyze the response performance of the sensor. The experimental results demonstrate that the sensor has a temperature sensitivity of

$2.90~ \text {nm/}^{\circ }\text {C}$

and a pressure sensitivity of 54.43 pm/Pa. The maximum temperature resolution is

$0.0013~^{\circ }\text {C}$

and the maximum pressure resolution is 0.0730 Pa. In addition, the temperature and pressure sensing can be simultaneously demodulated by operating on the cross-sensitivity matrix. The sensor boasts high sensitivity, excellent linearity, a compact structure, and straightforward manufacturing, offering broad application prospects in biochemistry and industrial production.

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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