一种基于有机电光聚合物的全光纤电场传感器  

All-Fiber Electric Field Sensor Based on Organic Electro-Optic Polymer

作　　者：宋奇震 刘锋[1] 杨彦博 张文香 吴梓烨 李卓奇 李志斌 樊鹏鹏 唐洁媛[1,2] 朱文国[1] 郑华丹 钟永春[1] 陈哲[1,2] 余健辉[1,2] Song Qizhen;Liu Feng;Yang Yanbo;Zhang Wenxiang;Wu Ziye;Li Zhuoqi;Li Zhibin;Fan Pengpeng;Tang Jieyuan;Zhu Wenguo;Zheng Huadan;Zhong Yongchun;Chen Zhe;Yu Jianhui(Department of Optoelectronic Engineering,College of Physics and Optoelectronic Engineering,Jinan University,Guangzhou 510632,Guangdong,China;Key Laboratory of Optoelectronic Information and Sensing Technologies of Guangdong Higher Education Institutes,Jinan University,Guangzhou 510632,Guangdong,China)

机构地区：[1]暨南大学物理与光电工程学院光电工程系,广东广州510632 [2]暨南大学光电信息与传感技术广东普通高校重点实验室,广东广州510632

出　　处：《光学学报》2024年第22期27-38,共12页Acta Optica Sinica

基　　金：国家重点研发计划(2021YFB2800801);国家自然科学基金(12174155);中央高校基本科研业务费专项资金(11624108)。

摘　　要：本文提出了一种基于分散红1/聚甲基丙烯酸甲酯聚合物(DR1/PMMA)与微纳锥形双模光纤(TTMF)结构的全光纤电场传感器,相比于传统的电场传感器,采用全光纤的结构最大程度减少了杂散电磁场对外界电磁场测量的电磁干扰问题。其中,经电极化处理之后的有机电光聚合物薄膜,电光系数达到了3.68 pm/V,并且有机电光聚合物薄膜质地柔软,可以更好地与高性能的光纤器件结合。实验证明,可以利用有机电光聚合物实现光纤器件的二阶非线性光学功能。本文使用锥形双模光纤作为基模与高阶模的模态干涉仪,经测试,在折射率为1.55~1.56时,器件的折射率灵敏度达到了8154.76 nm/RIU(灵敏度单位),在外加电场增大时,器件传输的干涉光谱会发生蓝移,在电场下具有相对较高的0.86 dB/V的灵敏度。Objective With the rapid advancement of science and technology,the demand for precise electric field measurements is increasing across fields such as electric power,communication,industrial automation,and biomedicine.In real-world applications, electric field sensors often face complex and variable environmental conditions, including temperaturefluctuations and electromagnetic interference. Traditional electric field sensors frequently struggle to meet high-precisionmeasurements, but sensors based on micro-nano tapered two-mode fibers (TTMFs) combined with a disperse red1/polymethyl methacrylate polymer (DR1/PMMA) offer a promising solution for achieving high-precision measurements.In this paper, we aim to develop and validate a novel all-fiber electric field sensor, leveraging the combination of TTMF’ssensitivity and the exceptional electro-optic properties of the DR1/PMMA. The primary objective of this research is todesign an electric field sensor with high sensitivity, fast response, low temperature sensitivity, and excellent stability. TheTTMF’s dual-mode interference effect, paired with its unique geometry, provides high sensitivity. The all-fiber structuresimplifies the sensor fabrication process and enables seamless integration with other fiber optic devices, significantlyfacilitating the construction of complex fiber-optic sensing networks while reducing system integration challenges and costs.When combined with DR1/PMMA, the sensor exhibits significant output signal changes even with minor variations in theelectric field, making it highly suitable for high-precision measurement scenarios. In addition, DR1/PMMA’s picosecondlevelresponse speed allows the sensor to rapidly detect dynamic electric field changes, providing robust technical supportfor real-time monitoring and applications with high real-time demands. Unlike traditional liquid crystal (LC)-based electricfield sensors, DR1/PMMA-based sensors are largely insensitive to temperature changes, which enhances their stabilityand reliability in di

关 键 词：光纤传感器 分散红1/聚甲基丙烯酸甲酯聚合物 锥形双模光纤结构 模态干涉 

分 类 号：V219[航空宇航科学与技术—航空宇航推进理论与工程]