传感技术学报2025，Vol.38Issue(12)：2148-2152,5.DOI:10.3969/j.issn.1004-1699.2025.12.006
基于非可调谐光源的低成本OFDR温度解调仪
Low-Cost OFDR Temperature Demodulator Based on Non-Tunable Light Source
摘要
Abstract
To address the issues of high cost,limited scalability,and system complexity in tunable laser-based optical frequency domain reflectometry(OFDR)systems,a non-tunable laser-based OFDR temperature demodulation system is proposed.By modulating a standard non-tunable laser with piezoelectric ceramic(PZT)to generate linear frequency-swept light and applying cross-correlation algorithms,distributed temperature measurement is achieved.In standard single-mode fiber experiments,results show a linear relationship between data shift and temperature,with a 0.929 fitting coefficient and demodulation errors below 0.5℃.For fiber Bragg grating(FBG)tests,the system achieves a 0.912 fitting coefficient and errors under 0.8℃.The results confirm that the system ensures high precision and sta-bility while significantly reducing costs,providing a cost-effective solution for distributed fiber-optic sensing in industrial monitoring and related fields.关键词
光频域反射/非可调谐光源/PZT调制/温度解调/互相关算法Key words
OFDR/non-tunable light source/PZT modulation/temperature demodulation/cross correlation algorithm分类
信息技术与安全科学引用本文复制引用
李明明,张鹏鸽,王新鑫,朱明达..基于非可调谐光源的低成本OFDR温度解调仪[J].传感技术学报,2025,38(12):2148-2152,5.基金项目
北京市自然科学基金项目(1252028) （1252028）
