Modeling of an Optical Sensor Based on Whispering Gallery Modes (WGMs) on the Surface Guiding Layer of Glass Filaments

被引：10

作者：

Tan, Wei ^{[1
]}

Shi, Lei ^{[1
]}

Chen, Xianfeng ^{[1
]}

机构：

[1] Shanghai Jiao Tong Univ, Dept Phys, State Key Lab Fiber Opt Local Area Commun Network, Shanghai 200240, Peoples R China

来源：

SENSORS | 2008年 / 8卷 / 10期

基金：

中国国家自然科学基金;

关键词：

Optical sensor; ring resonator; whispering gallery modes;

D O I：

10.3390/s8106761

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A ring-resonator-based refractive index sensor is proposed in this paper. Glass filaments with surface guiding layers created by ion exchange are crossed with a fiber taper to act as a ring resonator sensor. Theoretical simulation of the sensor response is proposed, and optimization of structural parameters including thickness and refractive index of the surface guiding layer and the diameter of the ring resonator for higher sensitivity is investigated. Results show that a detection limit of a variation of similar to 10(-5)RIU can be reached. Due to its simple fabrication and easy manipulation as well as good sensing performance, we believe such a micro-cavity sensor will find potential applications in high sensitivity optical sensing.

引用

页码：6761 / 6768

页数：8

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