Surface plasmon resonance based fiber optic sensor for the IR region using a conducting metal oxide film

被引：119

作者：

Verma, Rajneesh K. ^{[1
]}

Gupta, Banshi D. ^{[1
]}

机构：

[1] Indian Inst Technol, Dept Phys, New Delhi 110016, India

来源：

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION | 2010年 / 27卷 / 04期

关键词：

INDIUM TIN OXIDE; REFRACTIVE-INDEX; POLARITON;

D O I：

10.1364/JOSAA.27.000846

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Theoretical modeling of a surface plasmon resonance (SPR) based fiber optic sensor with a conducting metal oxide [indium tin oxide (ITO)] as the SPR active material is proposed. The theoretical analysis reveals that the proposed sensing probe can be utilized for sensing in the IR region, where most of the gases show their absorption regime. Comparison of sensitivity predicts that an ITO-layer-coated SPR-based fiber optic sensor is about 60% more sensitive than a gold-coated fiber optic sensor. The physical reasons behind sensitivity enhancement are provided. Apart from this, various advantageous features of the ITO over the noble metals, silver and gold, are addressed. (c) 2010 Optical Society of America

引用

页码：846 / 851

页数：6

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