Analysis of Phase Interrogated SPR Fiber Optic Sensors With Bimetallic Layers

被引：37
|
作者：
Moayyed, Hamed [1 ,2 ]
Leite, Ivo Teixeira [1 ,2 ]
Coelho, Luis [1 ,2 ]
Santos, Jose Luis [1 ,2 ]
Viegas, Diana [1 ,3 ]
机构：
[1] Inst Engn Sistemas & Comp Tecnol & Ciencia, P-4169007 Oporto, Portugal
[2] Univ Porto, Fac Ciencias, Dept Phys & Astron, P-4169007 Oporto, Portugal
[3] Cabelte SA, P-4410420 Vila Nova De Gaia, Portugal
来源：
IEEE SENSORS JOURNAL | 2014年 / 14卷 / 10期
关键词：
Surface plasmon resonance; fiber-optic sensors; tapered optical fibers; phase interrogation; bimetallic combination; SURFACE-PLASMON RESONANCE; REFRACTIVE-INDEX; SENSITIVITY;
D O I：
10.1109/JSEN.2014.2329918
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：
An effective analytical model combining geometrical optics with the transfer-matrix theory for stratified optical media is applied to investigate the sensing properties of tapered optical fiber surface plasmon resonance (SPR) sensors incorporating Ag-Au bimetallic layers, particularly in the context of phase interrogation. The performance of the sensing structures is studied as a function of the tapering parameters and thickness of the metallic layers. It is shown that the Ag-Au bimetallic combination is capable of improving the resolution and tuning working region of SPR fiber-optic sensors and that by tapering the sensing structures enhanced sensitivity can be achieved when phase interrogation is considered.
引用
收藏
页码：3662 / 3668
页数：7
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