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混合双肋型表面等离子体波导的传输特性 被引量:3

Transmission Characteristics of Mixed Double Ribbed Surface Plasmon Waveguide
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摘要 设计了一种新颖的混合双肋型表面等离子体波导结构,基于有限元法对该波导在工作波长为1550nm下的传输特性进行了数值仿真和优化分析。研究了该结构的电场分布、传输损耗、归一化模场面积、品质因子和增益系数。结果表明,通过最优参数设计,有效模场面积可达1.5×10^(-4)λ~2,品质因子为135,增益系数为1286cm^(-1),且此时具有较小的损耗。与矩形金属脊混合波导结构相比,所设计的结构具有更强的光场限制能力,可以获得更好的波导传输效果。所设计的波导结构是未来解决光电技术高速化、小型化、集成化的一个重要途径。 A novel hybrid type double ribbed surface plasmon waveguide structure is designed, and transmission characteristics at the work wavelength of 1550 nm are simulated and optimized based on the finite element method. The electric field distribution, transmission loss, normalized mode field area, quality factor and gain coefficient of the designed structure are studied. The results show that through the optimal parameter design, the effective mode field area is up to 1.5×10^-4λ^2, the quality factor is 135, the gain factor is 1286 cm^-1, and the loss is small. Compared with the rectangular metal mixed ridge waveguide structure, the designed structure has better light field limited ability and can get better waveguide transmission effect. The designed waveguide structure is an important way to solve photoelectric technology with high speed, miniaturization and integration in the future.
出处 《中国激光》 EI CAS CSCD 北大核心 2017年第5期255-262,共8页 Chinese Journal of Lasers
基金 河北省百人计划(4570018) 东北大学秦皇岛分校科技支撑(XNK201405)
关键词 表面光学 表面等离子体波导 传输特性 有限元法 optics at surfaces surface plasmon waveguide transmission characteristics finite element method
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