长春理工大学光电工程学院
纸质出版:2024
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韩冬子, 衣文索, 余双勇, 等. 用于光纤振动传感的盘片式振动增敏研究[J]. 传感器与微系统, 2024,(3):56-59.
韩冬子, 衣文索, 余双勇, 等. 用于光纤振动传感的盘片式振动增敏研究[J]. 传感器与微系统, 2024,(3):56-59. DOI: 10.13873/J.1000-9787(2024)03-0056-04.
目前光纤传感器增敏的研究方向主要从改变光纤自身结构和成分的角度出发或者借助外部封装工艺来实现增敏效果,导致传感器研发制作的成本和时间都会大幅提升。为满足地震勘探和结构安全监测中分布式光纤传感系统对振动测量的实际需要,设计了一种基于马赫—曾德尔干涉仪(MZI)光纤干涉的盘片式振动增敏结构,结合弹性力学与光纤弹光效应对其灵敏度进行了推导;使用有限元方法分析了盘片参数对灵敏度的影响,通过对增敏结构的合理设计及优化确定了盘片的尺寸。基于此结构设计的振动传感器有效工作频率范围为0.1~2.5 kHz
灵敏度可达6 988.2 rad/g_n
对于60 m外的震源可以采集到有效振动信号,能够满足振动监测领域的实际需要以及系统运行的经济性。
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Department of Optoelectronic Science, Harbin Institute of Technology at Weihai, Weihai 264209, China,Department of Optoelectronic Science, Harbin Institute of Technology at Weihai, Weihai 264209, China,Department of Optoelectronic Science, Harbin Institute of Technology at Weihai, Weihai 264209, China,Department of Optoelectronic Science, Harbin Institute of Technology at Weihai, Weihai 264209, China,Department of Optoelectronic Science, Harbin Institute of Technology at Weihai, Weihai 264209, China,Department of Optoelectronic Science, Harbin Institute of Technology at Weihai, Weihai 264209, China,Department of Optoelectronic Science, Harbin Institute of Technology at Weihai, Weihai 264209, China,Department of Optoelectronic Science, Harbin Institute of Technology at Weihai, Weihai 264209, China,Department of Optoelectronic Science, Harbin Institute of Technology at Weihai, Weihai 264209, China,Department of Optoelectronic Science, Harbin Institute of Technology at Weihai, Weihai 264209, China,Department of Optoelectronic Science, Harbin Institute of Technology at Weihai, Weihai 264209, China,Department of Optoelectronic Science, Harbin Institute of Technology at Weihai, Weihai 264209, China,School of Information and Electrical Engineering, Harbin Institute of Technology at Weihai, Weihai 264209, China,School of Information and Electrical Engineering, Harbin Institute of Technology at Weihai, Weihai 264209, China.Sensitivity enhancement of optical fiber vibration sensor through encapsulation of acoustic Helmholtz resonator[J].Optik,2018.
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