Circular arc plasmonic waveguide couplers between two-dimensional dielectric slab waveguides and plasmonic waveguides |
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Authors: | Bo Zhang Shan Du |
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Institution: | School of Electronics and Information Engineering, Beijing Jiaotong University, Beijing 100044, People’s Republic of China |
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Abstract: | We investigate the properties of arc plasmonic waveguide coupler between two-dimensional dielectric slab waveguides and plasmonic waveguides with two-dimensional finite difference time domain methods. The simulation results show that transmission efficiency between high index dielectric slab waveguides with width 300 nm and silver-air-silver waveguides with width 40 nm connected by the coupler can reach to 90.4% at optical communication wavelength. And, by optimizing the shapes near the ends of the coupler, the transmission efficiency can be improved to 98.4%. |
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Keywords: | 73 20 Mf 42 79 Gn |
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