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arXiv 1808.00539physics.optics
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侧面耦合到等离子体激元波导并可通过外部磁场切换的超紧凑高对比度磁光盘谐振器

Ultracompact high-contrast magneto-optical disk resonator side-coupled to a plasmonic waveguide and switchable by an external magnetic field

Ji-Song Pae, Song-Jin Im, Kum-Song Ho, Chol-Song Ri, Sok-Bong Ro, Joachim Herrmann

摘要:

在这里,我们提出并研究了一种新型的等离子体共振器的基础上的金属-绝缘体-金属波导和侧耦合磁光盘控制的外部磁场。通过改变磁场的方向,表面等离子体激元(SPP)的波数变化和透射率可以被调谐,并且通过改变外部磁场的方向,可以实现SPP模式的可逆开关。磁等离子体激元调制的共振增强超过200倍导致调制对比度超过十倍比(90- 1%调制),在数百GHz的光学带宽内保持适度的插入损耗。数值模拟证实了亚微米超小盘谐振器的高对比度磁等离子体激元调制的解析公式的预测。

英文摘要:

Here we propose and study a novel type of plasmonic resonators based on a metal-insulator-metal waveguide and a side-coupled magneto-optical disk controlled by an external magnetic field. The wavenumber change and the transmission of surface-plasmon-polaritons (SPPs) can be tuned by altering the magnetic field and reversible on/off switching of the running SPP modes by a reversal of the direction of the external magnetic field is demonstrated. Resonant enhancement of the magneto-plasmonic modulation by more than 200 times leads to a modulation contrast ratio more than tenfold ratio (90-\%-modulation) keeping a moderate insertion loss within an optical bandwidth of hundreds of GHz. Numerical simulations confirm the predictions by the derived analytical formulas of a high-contrast magneto-plasmonic modulation by the submicron ultra-small disk resonator.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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