光学
表面等离子体子
弯曲
等离子体子
物理
磁场
方位角
色散(光学)
波导管
螺旋(铁路)
联轴节(管道)
曲面(拓扑)
材料科学
几何学
数学分析
热力学
量子力学
冶金
数学
作者
Tao Fu,Xingxing Liu,Gongli Xiao,Tangyou Sun,Haiou Li
出处
期刊:Optics Express
[The Optical Society]
日期:2020-12-09
卷期号:28 (26): 38934-38934
被引量:4
摘要
A deep-subwavelength metal spiral structure (MSS) waveguide with arbitrary bending angles was proposed and demonstrated to propagate magnetic localized surface plasmons (MLSPs) in theoretical, simulated and experimental ways. The uniform coupling strengths and frequencies for adjacent MSSs with different azimuthal angles represent a significant advancement in the development of structures supporting MLSPs over arbitrary bending angles. The consistency among spectra, dispersion, and field distributions for five MSSs indicates that backward propagation of MLSPs over arbitrary bending angles is possible. In addition, a long S-chain consisting of adjacent MSSs at various angles holds promise for applications involving long-distance MLSPs waveguides.
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