【作者】 杨军； 苑立波；

【Author】 YANG Jun YUAN Libo Photonics Research Center, School of Science, Harbin Engineering University,Harbin, 150001

【机构】 哈尔滨工程大学理学院光子科学与技术研究中心；

【摘要】 本文给出了一种新型基于双环形拓扑结构的低相干光纤干涉仪,可用于智能结构中的准分布式应变或温度的测量。该系统实现了传感器的多路复用并构成了传感网络,降低了单点传感器的测量成本,同时借助于双端口问询技术,增强了传感器网络的抗毁坏能力。文中分析了环形网络结构的低相干多路复用原理,根据网络中白光干涉光纤传感器光程匹配条件,导出了干涉仪信号强度输出表达式。对双环结构的抗损坏特性进行了实验研究,给出了实验结果。更多还原

【Abstract】 A novel low-coherence interferometer based on dual optical fiber loop structure is demonstrated. Such a loop structure is especially useful to construct sensor network for distributed strain or temperature measurement in smart structures. A multiplexed sensors network is implemented to lower the cost of single sensor and prevents the damage of whole system by the dual-port interrogation technique. The principles of white light interferometer based on fiber loop network structure are described and the intensity signal output of the interferometer is given. Experiments results showed the system could robustly work when part of the sensors are damaged.更多还原