Fluorescence-based sensing with optical nanowires: a generalized model and experimental validation
Fluorescence-based sensing with optical nanowires: a generalized model and experimental validation
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DOI：
10.1364/oe.18.009474
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发表时间：
2010-04-26
期刊：
影响因子：
3.8
通讯作者：
Monro, Tanya M.
中科院分区：
文献类型：
--
作者：
Warren-Smith, Stephen C.;Afshar, Shahraam, V;Monro, Tanya M.
建立了小芯径高折射率光纤（光学纳米线）的荧光传感特性模型，并与实验进行了定量比较。对于第一次，高阶模式和相关的光学纳米线的损耗因子，这使得该模型可以有效地通过使用荧光团填充悬浮光学纳米线与实验进行比较。数值结果表明，高折射率材料是有益的荧光传感。然而，数值和实验结果表明，荧光信号是相对不敏感的核心大小，除了低浓度传感，其中纳米纤维芯是有利的，由于渐逝场功率增加。(C)2010年美国光学学会
A model for the fluorescence sensing properties of small-core high-refractive-index fibers (optical nanowires) is developed and compared quantitatively with experiment. For the first time, higher-order modes and loss factors relevant to optical nanowires are included, which allows the model to be compared effectively with experiment via the use of fluorophore filled suspended optical nanowires. Numerical results show that high-index materials are beneficial for fluorescence-based sensing. However, both numerical and experimental results show that the fluorescence signal is relatively insensitive to core size, except for low concentration sensing where nanoscale fiber cores are advantageous due to the increased evanescent field power. (C) 2010 Optical Society of America