基于七芯光纤的M-Z双参数同时测量传感器  

M-Z Dual Parameter Simultaneous Measurement Sensor Based on Seven-Core Optical Fiber

作　　者：上官春梅 张雯[1,2,3] 何巍[1,2,3] 骆飞[1,2,3] 祝连庆[1,2,3] SHANGGUAN Chunmei;ZHANG Wen;HE Wei;LUO Fei;ZHU Lianqing(Beijing Engineering Research Center of Optoelectronic Information and Instruments,Beijing Information Science and Technology University,Beijing 10001G,China;Key Lab.of Modern Measurement Control Technology,Ministry of Education,Beijing 100192,China;Beijing Key Lab.of Optoelectronic Test Technology,Beijing Information Science and Technology University,Beijing 100192,China)

机构地区：[1]北京信息科技大学光电信息与仪器北京市工程研究中心,北京100016 [2]现代测控技术教育部重点实验室,北京100192 [3]北京信息科技大学光电测试技术北京市重点实验室,北京100192

出　　处：《压电与声光》2018年第4期608-611,共4页Piezoelectrics & Acoustooptics

基　　金：教育部长江学者与创新团队发展计划基金资助项目(IRT-16R07);北京市科技计划基金资助项目(Z151100003615010);北京市教委2015年度创新能力提升计划基金资助项目(TJSHG201510772016);北京信息科技大学"勤信人才"培育计划基金资助项目(QXTCP C201702)

摘　　要：利用熔接机分别对单模光纤-七芯光纤-单模光纤进行纤芯错位熔接,制作了一种光纤Mach-Zehnder(M-Z)干涉型传感器。将一段长1cm的七芯光纤两端分别与SMF-28单模光纤错位熔接制得M-Z型干涉传感器。传感器最大条纹对比度为20dB。分别设计不同温度、不同应变对传感器的温度特性及应变特性进行分析研究。实验发现随着温度的增加,传感器的谐振波长发生红移,40~90℃温度范围内灵敏度和线性拟合度分别为39.3pm/℃和0.998 3;室温下随着应变由0增加到1 384με,传感器的谐振波功率下降,应变灵敏度和线性度分别为0.008 8dBm/με和0.990 3。实验结果表明,分别解调光谱的波长和光强都可实现温度和应变双参数同时测量。An optical fiber Mach Zehnder （M Z） interferometric sensor is fabricated by using a fusion splicer to perform core offset splicing of the single mode fiber seven core fiber single mode fiber respectively.An M Z interferometric sensor is fabricated by core offset splicing both ends of a length of 1 cm seven core fiber and SMF 28 single mode fiber.The maximum fringe contrast of the sensor is 20 dB.The different temperatures and strains have been designed respectively to analyze and study the temperature characteristics and strain characteristics of the sensor.The experimental results show that the resonant wavelength of the sensor is red shifted with the increase of temperature, the sensitivity and linear fitting are 39.3 pm/℃ and 0.998 3 in the temperature range of 40~90 ℃.The strain wave power is reduced when the strain increases from 0 to 1 384 με at room temperature, and the strain sensitivity and linearity are 0.008 8 dBm/με and 0.990 3,respectively. The experimental results show that the dual parameter of temperature and strain can be measured simultaneously by demodulating the wavelength and intensity of the spectrum respectively.

关 键 词：七芯光纤 错位熔接 Mach-Zehnder(M-Z) 温度测量 应变测量 双参数 

分 类 号：TN253[电子电信—物理电子学]