Fiber Optic Refractometer Based on Cladding Excitation of Localized Surface Plasmon Resonance

被引：23
|
作者：
Tou, Zhi Qiang [1 ]
Chan, Chi Chiu [1 ]
Wong, Wei Chang [1 ]
Chen, Li Han [1 ]
机构：
[1] Nanyang Technol Univ, Sch Chem & Biomed Engn, Div Bioengn, Singapore 637457, Singapore
来源：
IEEE PHOTONICS TECHNOLOGY LETTERS | 2013年 / 25卷 / 06期
关键词：
Gold nanoparticles; localized surface plasmon resonance (LSPR); optical fiber sensor; NANOPARTICLES; OPTIMIZATION; SENSOR; SIZE;
D O I：
10.1109/LPT.2013.2245117
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A fiber optic refractometer based on a novel configuration to excite localized surface plasmon resonance is demonstrated. The fiber sensor consists of a short segment of photonic crystal fiber (PCF) fusion spliced between multimode fibers. Evanescent field of cladding modes excite gold nanoparticles (AuNPs) immobilized on the PCF surface. The proposed sensor offers ease of fabrication, when normalized transmitted intensity is used to quantify external bulk refractive index (RI), sensitivity of - 731%/RIU, limit of detection of 1.76x10(-5) RIU can be achieved with high linearity (r(2) = 0.9988) over RI range from 1.33 to 1.43 RIU.
引用
收藏
页码：556 / 559
页数：4
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