Compact and high-resolution plasmonic wavelength demultiplexers based on Fano interference
Compact and high-resolution plasmonic wavelength demultiplexers based on Fano interference
复制标题
基于法诺干涉的紧凑型高分辨率等离子体波长解复用器
DOI：
10.1364/oe.19.009976
复制
发表时间：
2011-05-09
期刊：
影响因子：
3.8
通讯作者：
Gong, Qihuang
中科院分区：
文献类型：
--
作者：
Chen, Jianjun;Li, Zhi;Gong, Qihuang
利用金属-绝缘体-金属光波导中不同法布里-珀罗(FP)腔的强耦合，数值模拟了一种具有高波长分辨率的紧凑型等离子体波长解复用器。在解复用器中，发现出现了新的直角谐振器，其带宽比孤立的FP谐振器窄。这些窄带直角谐振器干扰了宽带FP谐振器，导致了透射谱中的Fano线形。因此，这些尖锐和不对称的Fano线形状大大提高了波长解复用的分辨率，这比孤立的FP谐振器的全宽度要窄得多。(C)2011年美国光学学会
Using strong couplings of different Fabry-Perot (FP) resonators in metal-insulator-metal waveguides, a compact plasmonic wavelength demultiplexer is numerically demonstrated with high wavelength resolution. In the demultiplexer, it is found that new right-angle resonators emerge with bandwidth narrower than that of the isolated FP resonators. These narrowband right-angle resonators interfere with the broadband FP resonators, resulting in Fano-line shapes in the transmission spectra. Consequently, these sharp and asymmetric Fano-line shapes considerably increase the resolution of wavelength demultiplexing, which is significantly narrower than the full width of the isolated FP resonator. (C) 2011 Optical Society of America