Optofluidic refractive-index sensor in step-index fiber with parallel hollow micro-channel
Optofluidic refractive-index sensor in step-index fiber with parallel hollow micro-channel
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DOI：
10.1364/oe.19.008200
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发表时间：
2011-04-25
期刊：
影响因子：
3.8
通讯作者：
Russell, P. St. J.
中科院分区：
文献类型：
--
作者：
Lee, H. W.;Schmidt, M. A.;Russell, P. St. J.
提出了一种简单的折射率传感器的基础上的阶跃折射率光纤的中空微通道平行于其核心。当填充有折射率大于二氧化硅的液体时，该通道变成波导，导致在玻璃芯模式与液体芯模式相位匹配的波长处的透射光谱中出现急剧下降。的浸渍波长的液体折射率的变化的敏感性进行量化，并用于研究在狭窄的通道中的流体的动态流动特性的结果。这种光纤微结构的潜在应用包括测量液体的光学性质、折射率传感、生物光子学和纳米尺度上的流体动力学研究。(C)2011年美国光学学会
We present a simple refractive index sensor based on a step-index fiber with a hollow micro-channel running parallel to its core. This channel becomes waveguiding when filled with a liquid of index greater than silica, causing sharp dips to appear in the transmission spectrum at wavelengths where the glass-core mode phase-matches to a mode of the liquid-core. The sensitivity of the dip-wavelengths to changes in liquid refractive index is quantified and the results used to study the dynamic flow characteristics of fluids in narrow channels. Potential applications of this fiber microstructure include measuring the optical properties of liquids, refractive index sensing, biophotonics and studies of fluid dynamics on the nanoscale. (C) 2011 Optical Society of America