摘要
为了降低光栅周期对表面等离子体谐振(SPR)的影响,简化高灵敏度SPR传感器的加工工艺并使SPR容易被激发,根据周期性结构激发SPR的机制,提出了一种双层金光栅结构的光纤传感器模型。由于双层光栅之间的动量补偿使得SPR更容易被激发,并且光栅之间的近场耦合,增加了谐振的强度。用有限元方法研究了双层光栅D型光纤传感器的传感特性,并得出了各结构参数对谐振和传感特性的影响规律。这些规律给基于SPR的低成本易装配D形光纤传感器的使用与研究,提供了一定的借鉴意义。
In order to reduce the influence of grating period on surface plasmon resonance(SPR),simplify the fabrication process of high sensitivity SPR sensor and make SPR easier to be excited,a fiber sensor model of double-layer gold gratings is proposed according to the mechanism of SPR excited by periodic structure.Because of the momentum compensation between the double-layer gratings,SPR is more easily excited.And the near-field coupling between the gratings increases the resonance intensity.It is assembled easily and its feasibility is verified by the finite element method.The sensing characteristics of the D-shaped fiber sensor are studied and the influence of structural parameters on resonance is found.It provides a reference for the processing of D-shaped fiber sensor based on SPR.
作者
张淑莉
王展
杨县超
ZHANG Shuli;WANG Zhan;YANG Xianchao(College of Technology,Zhengzhou Technology and Business University,Zhengzhou 451400,China;School of Information Engineering,Zhengzhou University,Zhengzhou 450001,China)
出处
《传感器与微系统》
CSCD
北大核心
2021年第9期6-9,13,共5页
Transducer and Microsystem Technologies
基金
河南省科技厅科技攻关项目(202102110269)
河南博士后基金资助项目(20202025)。
关键词
传感器
光纤传感器
D形光纤
表面等离子体谐振
双层光栅
sensor
optical fiber sensor
D-shaped fiber
surface plasmon resonance(SPR)
double-layer gratings
