A Plasmonic Triple-Wavelength Demultiplexing Structure Based on a MIM Waveguide With Side-Coupled Nanodisk Cavities
A Plasmonic Triple-Wavelength Demultiplexing Structure Based on a MIM Waveguide With Side-Coupled Nanodisk Cavities
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DOI：
10.1109/tnano.2013.2284833
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发表时间：
2013-11-01
影响因子：
2.4
通讯作者：
Xu, Anshi
中科院分区：
文献类型：
--
作者：
Lu, Fan;Wang, Zhonghua;Xu, Anshi
我们提出并数值研究了一种基于金属-绝缘体-金属波导的等离子体三波长解复用结构。该结构由三个输出通道组成，每个通道被夹在两个纳米盘腔之间，用作双阻带滤波器。利用时域耦合模理论和时域有限差分法分析了其工作原理和传输特性。仿真结果表明，通过调整结构的几何参数，可以有效地调谐各信道的解复用波长。该结构在光子集成电路和超紧凑光通信系统中具有潜在的应用前景。
We propose and numerically investigate a plasmonic triple-wavelength demultiplexing structure based on metal-insulator-metal waveguides with side-coupled nanodisk cavities. The structure consists of three output channels, each of which is sandwiched by two nanodisk cavities and functions as a dual stop-band filter. The operation principle and transmission characteristics are analyzed by using the temporal coupled-mode theory and the finite-difference time-domain method. Simulation results show that the demultiplexed wavelength of each channel can be effectively tuned by adjusting the geometrical parameters of the structure. The proposed structure will find potential applications in photonic-integrated circuits and ultracompact optical communication systems.