Tapered optical fiber sensor based on localized surface plasmon resonance

被引：162
|
作者：
Lin, Hsing-Ying [1 ,2 ]
Huang, Chen-Han [1 ,2 ]
Cheng, Gia-Ling [3 ]
Chen, Nan-Kuang [3 ]
Chui, Hsiang-Chen [1 ,4 ]
机构：
[1] Natl Cheng Kung Univ, Dept Photon, Tainan 701, Taiwan
[2] Natl Chung Cheng Univ, Ctr Nano Biodetect, Chiayi 621, Taiwan
[3] Natl United Univ, Dept Electroopt Engn, Miaoli 360, Taiwan
[4] Natl Cheng Kung Univ, Adv Optoelect Technol Ctr, Tainan 701, Taiwan
来源：
OPTICS EXPRESS | 2012年 / 20卷 / 19期
关键词：
REFRACTIVE-INDEX SENSORS; BIOSENSORS; IMMUNOSENSOR; NANOPARTICLE; SENSITIVITY; GENERATION;
D O I：
10.1364/OE.20.021693
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A tapered fiber localized surface plasmon resonance (LSPR) sensor is demonstrated for refractive index sensing and label-free biochemical detection. The sensing strategy relies on the interrogation of the transmission intensity change due to the evanescent field absorption of immobilized gold nanoparticles on the tapered fiber surface. The refractive index resolution based on the interrogation of transmission intensity change is calculated to be 3.2 x 10(-5) RIU. The feasibility of DNP-functionalized tapered fiber LSPR sensor in monitoring anti-DNP antibody with different concentrations spiked in buffer is examined. Results suggest that the compact sensor can perform qualitative and quantitative biochemical detection in real-time and thus has potential to be used in biomolecular sensing applications. (C)2012 Optical Society of America
引用
收藏
页码：21693 / 21701
页数：9
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