基于虚拟增强谐波游标效应的OCMI灵敏度改进

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

IEEE Sensors Journal Pub Date : 2025-03-26 DOI:10.1109/JSEN.2025.3552921

Yan Wu;Ting Xue;Songlin Li;Zhuping Li;Bin Wu

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引用次数: 0

摘要

高灵敏度温度检测在科学研究和工业应用中起着至关重要的作用。本文旨在利用虚游标效应，提高基于光载波微波干涉（OCMI）的分布式级联光纤法布里-珀罗干涉仪（fpi）的测温灵敏度。考虑到虚拟传统游标效应的放大系数受扫描频率范围的限制，提出了一种新型的虚拟增强谐波游标效应，其中两个虚拟参考FPI和传感FPI形成频率反向偏移的游标效应，从而实现了增强游标效应。通过设计两个参考FPI和传感FPI之间的长度差为2倍，加上一个小的失谐，构造了谐波游标效应。虚拟增强谐波游标效应的灵敏度为3322.54 kHz/°C，放大倍数为130.43，超过了传统的同阶谐波游标效应的灵敏度。此外，虚拟游标效应允许任意调整参考FPI的长度，证明了所提出的游标效应在由级联FPI组成的分布式传感器中的适用性。

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Sensitivity Improvement of OCMI Based on the Virtual Enhanced Harmonic Vernier Effect

High-sensitivity temperature detection plays a crucial role in scientific research and industrial applications. This work aims to enhance the temperature measurement sensitivity of distributed cascaded fiber Fabry-Perot interferometers (FPIs) based on the optical carrier-based microwave interferometry (OCMI) by utilizing the virtual Vernier effect. Considering that the magnification factor of the virtual traditional Vernier effect is constrained by the frequency scanning range, a novel virtual enhanced harmonic Vernier effect is proposed, wherein the two virtual reference FPIs and the sensing FPI form Vernier effects with frequency shifts in opposite directions, thereby achieving an enhanced Vernier effect. By designing the length differences between the two reference FPIs and the sensing FPI, which are twice plus a small detuning, the harmonic Vernier effect is constructed. The virtual enhanced harmonic Vernier effect achieves a sensitivity of 3322.54 kHz/°C and a magnification factor of 130.43, surpassing the sensitivity of the traditional and same-order harmonic Vernier effects. Additionally, the virtual Vernier effect allows for arbitrary adjustments to the length of the reference FPI, demonstrating the applicability of the proposed Vernier effect in distributed sensors composed of cascaded FPIs.

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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