Highly Sensitive Optical Fiber Temperature Sensor Based on Microwave Photonic Filter With Enhanced Vernier Effect

被引：11

作者：

Wang, Minghe ^{[1
]}

Zhang, Ailing ^{[1
]}

Pan, Honggang ^{[1
]}

Liu, Fei ^{[1
]}

Chang, Pengxiang ^{[1
]}

Wang, Junfeng ^{[1
]}

Lin, Rui ^{[1
]}

Wang, Bo ^{[1
]}

机构：

[1] Tianjin Univ Technol, Sch Integrated Circuit Sci & Engn, Tianjin 300384, Peoples R China

来源：

IEEE SENSORS JOURNAL | 2024年 / 24卷 / 05期

关键词：

Enhanced Vernier effect; fiber optic sensors (OFS); microwave photonic filter (MPF); Vernier effect; RECENT PROGRESS;

D O I：

10.1109/JSEN.2024.3351208

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A highly sensitive optical fiber temperature sensor based on microwave photonic filters (MPFs) with enhanced Vernier effect has been proposed and experimentally demonstrated. The enhanced Vernier effect is achievedthrough a parallel configuration structure that precisely controls the delay time difference and filter coefficient of twodual-tap MPFs with a common sensing arm. So, the freespectral range (FSR) of the two MPFs varies in opposite directions with temperature, which results in a more pronounced envelope shift and increased sensitivity. Experimental results demonstrate that the temperature sensitivity is improved to 902.51 kHz/C-degrees by using the enhanced Vernier effect, which is around 69 and 71 times the individual MPFs, respectively.

引用

页码：6213 / 6218

页数：6

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