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作为亚波长的表面等离子体光波导,在传导电磁场模式的过程中,模式间的串扰是影响模式传输距离及其它物理特性的一个重要因素,因此本文首先系统地研究了两个平行放置的由介质-金属-介质纳米线阵列构成的混合表面等离子体光波导的模式耦合和串扰特性;其次作为对比,把波导结构变为金属-介质-金属纳米线阵列,同样平行放置两个来研究其模式耦合与串扰特性.研究结果表明,这两种混合表面等离子体光波导所支持的电磁场基模的耦合长度远大于其有效传输距离。因此在进行高密度集成时,模式间发生串扰的概率将会非常小。基于这种特性,这两种结构的混合表面等离子体光波导可以应用于高密度光子器件集成、纳米光子学和生物传感器等领域。
As a subwavelength surface plasmon optical waveguide, crosstalk between modes is an important factor affecting the mode transmission distance and other physical characteristics during the conduction of the electromagnetic field mode. Therefore, in this paper, firstly, - Metal - dielectric nanowire array composed of hybrid surface plasmonic waveguide mode coupling and crosstalk characteristics; Second, as a comparison, the waveguide structure into a metal - dielectric - metal nanowire arrays, the same two parallel placed to study the mode coupling And crosstalk characteristics.The results show that the coupling length of the electromagnetic field fundamental modes supported by the two hybrid surface plasmonic waveguides is much larger than the effective transmission distance. Therefore, high-density integration, the probability of crosstalk between modes will be very small. Based on this feature, the two structures of hybrid surface plasmonic waveguides can be applied to high-density photonic device integration, nano-photonics and biosensors and other fields.