银纳米线表面等离子体波导的传输损耗特性研究

J4 ›› 2012, Vol. 29 ›› Issue (2): 252-256.

• 纤维与波导光学 • 上一篇

银纳米线表面等离子体波导的传输损耗特性研究

陈金彬鲁拥华陶俊易明芳王沛明海

中国科技大学光学与光学工程系, 安徽合肥 230026

收稿日期:2011-03-31 修回日期:2011-04-29 出版日期:2012-03-28 发布日期:2012-02-28
通讯作者: 鲁拥华 (1976-)，副教授，主要研究方向为纳米光学。 E-mail:yhlu@ustc.edu.cn
基金资助:
国家重点基础研究发展规划项目（2011cb301802）、国家自然科学基金重点项目（60736037、61036005）和面上项目（11074240, 60977019）、中央高校基本科研业务费专项资金资助

Investigation on propagation loss of silver nanowire plasmonic waveguides

CHEN Jin-bin, LU Yong-hua, TAO Jun, YI Ming-fang, WANG Pei, MING Hai

Department of Optics and Optical Engineering, University of Science and Technology of China, Hefei 230026, China

Received:2011-03-31 Revised:2011-04-29 Published:2012-03-28 Online:2012-02-28

摘要/Abstract

摘要：

通过远场聚焦光斑激发银纳米线表面等离子体激元(SPP: Surface Plasmon Polariton)，并搭建银纳米线路由传输结构改变SPP的传输距离，研究了SPP的传输损耗特性。实验上测量了置于玻璃衬底表面的银纳米线在不同激发波长时SPP的传输损耗系数，发现SPP的传输损耗具有波长依赖性：632.8nm激光激发时，传输损耗系数为0.115 ，780nm激光激发时，传输损耗系数为0.0923 ，即传输损耗系数在长波激发时小，而在短波激发时大。测量结果对基于银纳米线波导的集成微纳光学系统设计有很好的指导作用。

关键词: 光电子学, 银纳米线, 表面等离子体, 传输损耗

Abstract:

By the far field excitation and measurement, propagation loss of wire’s surface plasmon is experimentally investigated with structure of branched-routing silver nanowire. The experimental results disclose the propagation loss depending on the exciting wavelength. The coefficient of propagation loss is measured as 0.115 at 632.8nm and 0.0923 at 780nm. The propagation loss is smaller at longer wavelength, that is, SPP can propagate further at long-wavelength laser exciting. Our measurement will contribute to optimizing plasmonic devices based on silver nanowire waveguides.

Key words: optoelectronics, silver nanowire, surface plasmon, propagation loss

中图分类号:

TN252

陈金彬鲁拥华陶俊易明芳王沛明海. 银纳米线表面等离子体波导的传输损耗特性研究[J]. J4, 2012, 29(2): 252-256.

CHEN Jin-bin, LU Yong-hua, TAO Jun, YI Ming-fang, WANG Pei, MING Hai . Investigation on propagation loss of silver nanowire plasmonic waveguides[J]. J4, 2012, 29(2): 252-256.

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银纳米线表面等离子体波导的传输损耗特性研究

Investigation on propagation loss of silver nanowire plasmonic waveguides

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