光纤电压传感器传感头优化与热致非互易误差抑制  

Sensor head optimization and thermal nonreciprocal error suppression for fiber optic voltage sensor

作　　者：杨汉瑞[1] 董春君 黄蔚梁 王建青 郭宜昌 韩泽庭 YANG Hanrui;DONG Chunjun;HUANG Weiliang;WANG Jianqing;GUO Yichang;HAN Zeting(School of Automation Engineering,Northeast Electric Power University,Jilin,Jilin 132012,China;Transmission Electrical Department of Power Grid Engineering Company,Power China Jiangxi Electric Power Engineering Co.,Ltd.,Nanchang,Jiangxi 330096,China;Department of Fiber Sensors,No.16 Institution of Aerospace&Technology Corporation,Xi'an,Shaanxi 710100,China)

机构地区：[1]东北电力大学自动化工程学院,吉林吉林132012 [2]中国电建集团江西省电力设计院有限公司电网工程分公司,江西南昌330096 [3]中国航天科技集团公司第九研究院十六研究所,陕西西安710100

出　　处：《光电子．激光》2023年第8期809-815,共7页Journal of Optoelectronics·Laser

基　　金：吉林省自然科学基金(YDZJ202101ZYTS140);国家自然科学基金青年基金(61703090)资助项目。

摘　　要：针对普通光纤电压传感器在外界温度扰动下其输出精度和稳定性会受到严重影响这一问题,本文提出了一种采用保偏光子晶体光纤(polarization maintaining photonic crystal fiber,PM-PCF)作为传感光纤的传感头优化方法抑制温度扰动下的系统非互易误差。在综合考虑PM-PCF与传统熊猫型保偏光纤(panda polarization maintaining fiber,panda-PMF)尾纤间的熔接损耗、传输损耗以及现有工艺条件下的光纤制备等问题的基础上,优化得到了与panda-PMF间的熔接损耗低至0.14 dB的PM-PCF;并对比分析了这两种保偏光纤的双折射温度依赖特性,建立了全光纤类型的光学电压传感器(fiber optic voltage sensor,FOVS)热致系统误差输出模型,分析验证了PM-PCF在解决反射式逆压电型FOVS热致非互易问题的可行性。结果表明,采用PM-PCF优化后的FOVS热致非互易误差约是传统保偏光纤电压传感器的10^(-2)量级。这在提高系统输出精度和稳定性等方面具有显著优势,同时这种低损耗的优化方法在光纤传感及通信等领域具有重要的应用价值。The output accuracy and stability of the optical fiber voltage sensor can be seriously affected under the disturbance of external ambient temperature.Therefore,this paper proposes a sensor head optimization method using polarization maintaining photonic crystal fiber(PM-PCF)as the sensing fiber to suppress the system′s nonreciprocal error under temperature disturbance.Consideration of the fusion loss,transmission loss between the traditional panda polarization maintaining fiber(panda-PMF)pigtail and PM-PCF,and the fiber fabrication problem under the existing technological conditions,a PM-PCF with the fusion loss as low as 0.14 dB between it and the traditional panda-PMF is optimized.The birefringent temperature dependence characteristics of the two kinds of polarization maintaining fibers are compared and analyzed.And the thermal system error output model of the fiber optic voltage sensor(FOVS)is established.Then,the feasibility of PM-PCF in solving the thermal nonreciprocity problem of reflective inverse piezoelectric FOVS is analyzed and verified.The results show that the thermal nonreciprocity error of the FOVS optimized by PM-PCF is about 10^(-2)of the traditional PCF voltage sensor.It has significant advantages in improving the output accuracy and stability of the system.At the same time,this low-loss optimization method has important value in fiber sensing and communication application area.

关 键 词：电压测量 光纤电压传感器 保偏光子晶体光纤(PM-PCF) 热致误差抑制 

分 类 号：TM930.2[电气工程—电力电子与电力传动]