Design criteria for microstructured-optical-fiber-based surface-plasmon-resonance sensors
Design criteria for microstructured-optical-fiber-based surface-plasmon-resonance sensors
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DOI：
10.1364/josab.24.001423
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发表时间：
2007-06-01
影响因子：
1.9
通讯作者：
Skorobogatiy, Maksim
中科院分区：
文献类型：
--
作者：
Hassani, Alireza;Skorobogatiy, Maksim
提出了一种基于微结构光纤（MOF）的表面等离子体共振（SPR）传感器的设计策略。在这样的传感器中，包含分析物的大的金属化通道的内表面上的等离子体激元可以由单模微结构光纤的基模激发。等离子体激元和纤芯模式之间的相位匹配可以通过将空气填充的微结构引入到光纤纤芯中来加强。特别地，在其最简单的实施方式中，通过将小的中心孔引入光纤芯，可以降低基模的有效折射率以匹配等离子体激元的有效折射率。基于MOF的传感器的分辨率被证明是低至3 X 10（-5）RIU，其中RIU表示折射率单位。将用于有效分析物流动的大尺寸微流体通道与可设计模式折射率的单模波导集成在一起的能力对于在任何可设计波长下操作的集成高灵敏度MOF-SPR传感器的开发是有吸引力的。(C)2007年美国光学学会
Design strategies for microstructured-optical-fiber (MOF-) based surface-plasmon-resonance (SPR) sensors are presented. In such sensors, plasmons on the inner surface of the large metallized channels containing analyte can be excited by a fundamental mode of a single-mode microstructured fiber. Phase matching between a plasmon and a core mode can be enforced by introducing air-filled microstructures into the fiber core. Particularly, in its simplest implementation, the effective refractive index of a fundamental mode can be lowered to match that of a plasmon by introducing a small central hole into the fiber core. Resolution of the MOF-based sensors is demonstrated to be as low as 3 X 10(-5) RIU, where RIU means refractive index unit. The ability to integrate large-size microfluidic channels for efficient analyte flow together with a single-mode waveguide of designable modal refractive index is attractive for the development of integrated highly sensitive MOF-SPR sensors operating at any designable wavelength. (C) 2007 Optical Society of America