基于七芯光纤和少模光纤拼接结构的曲率传感测量

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英文篇名：Curvature Sensing Measurement Based on Seven-Core Fiber and Few-Mode Fiber Splicing Structure 作者：许西宁 ; 陈雍君 英文作者：Xu Xining;Chen Yongjun;School of Mechanical, Electronic and Control Engineering, Beijing Jiaotong University;Key Laboratory of Vehicle Advanced Manufacturing, Measuring and Control Technology, Ministry of Education,Beijing Jiaotong University;School of Economics and Management Engineering, Beijing University of Civil Engineering and Architecture; 关键词：光纤光学 ; 曲率传感器 ; 七芯光纤 ; 少模光纤 英文关键词：fiber optics;;curvature sensor;;seven-core fiber;;few-mode fiber 中文刊名：GXXB 英文刊名：Acta Optica Sinica 机构：北京交通大学机械与电子控制工程学院;北京交通大学载运工具先进制造与测控技术教育部重点实验室;北京建筑大学经济与管理工程学院; 出版日期：2018-10-29 06:02 出版单位：光学学报 年：2019 期：v.39;No.444 基金：载运工具先进制造与测控技术教育部重点实验室(北京交通大学)开放课题;; 地下综合管廊施工技术与智慧化管理系统研究课题(00362016168) 语种：中文; 页：GXXB201903010 页数：7 CN：03 ISSN：31-1252/O4 分类号：90-96

摘要

利用光纤在不同弯曲曲率下的不同形变,提出并验证了一种基于七芯光纤和少模光纤的新型光纤曲率传感器。分别制作了三种不同结构的传感器,利用快速傅里叶变换分析了它们的干涉模式,获得波长的传感灵敏度分别为6.33,30.83,15.96 nm/m,强度的传感灵敏度分别为8.57,25.65,1.96 dB/m。
        Based on the different deformations of optical fibers under different bending curvatures, a novel optical fiber curvature sensor is proposed and demonstrated based on seven-core fiber(SCF) and few-mode fiber(FMF). In the experiment, three kinds of sensors with different structures are prepared, and their interference modes are analyzed with the fast Fourier transform(FFT) method. The sensing sensitivities of wavelength are 6.33, 30.83, 15.96 nm/m, respectively, while the sensing sensitivities of intensity are 8.57, 25.65, 1.96 dB/m, respectively.

引文

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