一种基于光纤微丝中光栅的微流控折射传感器。

A microfluidic refractometric sensor based on gratings in optical fibre microwires.

作者信息

Xu Fei, Brambilla Gilberto, Lu Yanqing

机构信息

Department of Materials Science and Engineering, National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, P. R. China.

出版信息

Opt Express. 2009 Nov 9;17(23):20866-71. doi: 10.1364/OE.17.020866.

DOI:10.1364/OE.17.020866

PMID:19997322

Abstract

In this paper we investigate a novel method to manufacture gratings in optical fiber microwires and discuss their application to sensing. Gratings can be manufactured by wrapping an optical fiber microwire on a microstructured rod. This method avoids post-processing the thin optical fiber microwire and it has great flexibility: chirping can be realized by designing the air hole size and position in the microstructured rod. By exploiting the large evanescent field in an inner channel, microfluidic refractometric sensors with sensitivity > 10(3) nm/RIU can be achieved.

摘要

在本文中，我们研究了一种在光纤微丝中制造光栅的新方法，并讨论了其在传感方面的应用。光栅可以通过将光纤微丝缠绕在微结构棒上来制造。这种方法避免了对细光纤微丝进行后处理，并且具有很大的灵活性：通过设计微结构棒中的气孔尺寸和位置可以实现啁啾。通过利用内部通道中的大倏逝场，可以实现灵敏度大于10(3) nm/RIU的微流体折射传感器。