一种基于狭缝腔的表面等离子体分光器。

A plasmonic splitter based on slot cavity.

作者信息

Guo Yinghui, Yan Lianshan, Pan Wei, Luo Bin, Wen Kunhua, Guo Zhen, Li Hengyi, Luo Xiangang

机构信息

Center for Information Photonics & Communications, School of Information Science & Technology, Southwest Jiaotong University, Chengdu, Sichuan 610031, China.

出版信息

Opt Express. 2011 Jul 18;19(15):13831-8. doi: 10.1364/OE.19.013831.

DOI:10.1364/OE.19.013831

PMID:21934744

Abstract

A plasmonic splitter based on slot cavity is proposed and numerically investigated using finite-difference-time-domain (FDTD) methods. The structure consists of the input waveguide, a slot cavity and output waveguides. By varying positions of output waveguides, frequency splitter and power splitter can be achieved in the proposed structure. Flexible output power ratio is feasible through further adjusting the coupling distance and the refractive index of output waveguides.

摘要

提出了一种基于狭缝腔的表面等离子体波分束器，并采用时域有限差分（FDTD）方法进行了数值研究。该结构由输入波导、一个狭缝腔和输出波导组成。通过改变输出波导的位置，在所提出的结构中可以实现频率分束器和功率分束器。通过进一步调整输出波导的耦合距离和折射率，可以实现灵活的输出功率比。