Ultracompact high-contrast magneto-optical disk resonator side-coupled to a plasmonic waveguide and switchable by an external magnetic field
作者： Ji-Song Pae , Song-Jin Im , Kum-Song Ho , Chol-Song Ri , Sok-Bong Ro
DOI: 10.1103/PHYSREVB.98.041406
关键词: Magnetic field 、 Optoelectronics 、 Resonator 、 Magneto optical 、 Materials science 、 Bandwidth (signal processing) 、 Contrast ratio 、 High contrast 、 Plasmon 、 Insertion loss
摘要: Here we propose and study a novel type of plasmonic resonators based on metal-insulator-metal waveguide side-coupled magneto-optical disk controlled by an external magnetic field. The wave-number change the transmission surface-plasmon-polaritons (SPPs) can be tuned altering field reversible on/off switching running SPP modes reversal direction is demonstrated. Resonant enhancement magnetoplasmonic modulation more than 200 times leads to contrast ratio tenfold (90-% modulation) keeping moderate insertion loss within optical bandwidth hundreds GHz. Numerical simulations confirm predictions derived analytical formulas high-contrast submicrometer ultrasmall resonator.
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