Compact resonant integrated microfluidic refractometer

被引：93

作者：

Domachuk, P ^{[1
]}

Littler, ICM ^{[1
]}

Cronin-Golomb, M ^{[1
]}

Eggleton, BJ ^{[1
]}

机构：

[1] Univ Sydney, Sch Phys, CUDOS, Sydney, NSW 2006, Australia

来源：

APPLIED PHYSICS LETTERS | 2006年 / 88卷 / 09期

基金：

澳大利亚研究理事会;

关键词：

D O I：

10.1063/1.2181204

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We introduce a class of highly compact refractometers integrated onto a planar microfluidic geometry that demonstrates high resolution refractive index measurements in 50 mu m fluid channels utilizing a Fabry-Perot cavity formed between resonant Bragg grating reflectors. This cavity forms a resonant peak in the transmission spectrum which is dependent upon the refractive index of the fluid in the microfluidic channel. We demonstrate this class of refractometer using optical fiber Bragg gratings; to provide high resolution, intracavity losses are minimized using integrated collimating optics. The refractometer can resolve refractive index changes of 0.2% and is simulated using coupled mode theory.

引用

页数：3

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