Plasmonic gold nanoshell induced spectral effects and refractive index sensing properties of excessively tilted fiber grating

被引：0
|
作者：
罗彬彬 [1 ]
卢化峰 [1 ]
石胜辉 [1 ]
赵明富 [1 ]
鲁姣 [1 ]
王亚杰 [1 ]
王鑫 [1 ]
机构：
[1] Chongqing Key Laboratory of Optical Fiber Sensor and Photoelectric Detection,Chongqing University of Technology
来源：
Chinese Optics Letters | 2018年 / 16卷 / 10期
基金：
中国国家自然科学基金;
关键词：
RIU; TM; TE; Plasmonic gold nanoshell induced spectral effects and refractive index sensing properties of excessively tilted fiber grating;
D O I：
暂无
中图分类号：
TP212 [发送器（变换器）、传感器];
学科分类号：
080202 ;
摘要：
We demonstrate a fiber refractive index(RI) sensor based on an excessively tilted fiber grating(ExTFG)immobilized by large-size plasmonic gold nanoshells(GNSs). The GNSs are covalently linked on ExTFG surface.Experimental results demonstrate that both the intensity of the transverse magnetic(TM) and transverse electric(TE) modes of ExTFG are significantly modulated by the localized surface plasmon resonance(LSPR) of GNSs due to the wide-range absorption band. The wavelength RI sensitivities of the TM and TE modes in the low RI range of 1.333–1.379 are improved by ～25% and ～14% after GNSs immobilization, respectively, and the intensity RI sensitivities are ～599%/RIU and ～486%/RIU, respectively.
引用
收藏
页码：13 / 17
页数：5
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