Enhancement of the Surface Plasmon Polariton along the Nanorod:the Electric Field Coupling Effect at the Excitation End

作     者：Zhongyue Zhang Zhidong Zhang Zuhong Xiong Education Ministry Key Laboratory on Luminescence and Real-Time Analysis School of Physical Science and Technology Southwest University Chongqing 400715 China Hongyan Wang School of Physical Science and Technology Southwest Jiaotong University Chengdu 610031 China 

会议名称：《2011 4th IEEE International Conference on Computer Science and Information Technology(ICCSIT 2011)》

会议日期：2011年

学科分类：070207[理学-光学] 07[理学] 0702[理学-物理学] 

基　　金：supports by the National Natural Foundation of China (Grant No. 11004160) the Natural Science Foundation of CQ CSTC (Grant No. CSTC2010BB4005) the Fundamental Research Funds for the Central Universities (Grant No. XDJK2009C078) the Southwest University Research Foundation (Grant No. SWU109024) supports by the National Natural Foundation of China (Grant No. 10974157) the Fundamental Research Funds for the Central Universities (Grant No. XDJK2009A001) 

关 键 词：surface plasmon polariton waveguide finite difference time domain 

摘      要：To enhance the surface plasmon polariton （SPP） along the elongated nanorod, the nanocuboid is used at the excitation end of the nanorod. The numerical simulations are performed by the finite difference time domain method. The results show that when the nanocuboid is used, stronger SPP waves are excited and then propagate along the nanorod. In addition, the enhancement of SPP depends strongly on the structural parameters of the nanocuboid. These results would be greatly relevant to developing new SPP device or other nanophotonic circuit components in the future.