摘要
磁表面等离激元(MSPs)可利用光子和半导体材料里的电子在纳米尺度的相互作用,将光场分布限制在远小于光波长的尺度之内,解决了因波长造成的光子器件与电子器件之间的尺寸差别问题,用其在亚波长尺度内的约束和局域特性,可将光波导的尺寸缩减到微纳量级,使光学芯片的集成度大大提高.计算了半导体-介质-金属(SDM)三层堆叠结构上MSPs单向传播的频带范围,指出只需常规磁场强度就可在SDM结构上实现太赫兹波段的MSPs单向传播机制,同时讨论了MSPs作为光学隔离器的潜在应用.
The available interaction of Magnetic Surface Plasmons（MSPs） in semiconductor materials makes the optical field distribution to be much smaller than the wavelength, which would solve the integrated problem caused by the difference between both photonic and electronic devices. The size of optical waveguide can be reduced greatly and the integration has been improved. This paper calculated the one-way propagation frequency range of MSPs to semiconductor-dielectric-metal（SDM） in three layer cladding structure and pointed out conventional magnetic field strength makes MSPs one-way propagation in Terahertz regime. The dispersion relation of MSPs in a SDM structure was calculated analytically. By means of normal magnetic field strength, the one-way EM modes propagation in Terahertz frequency can be realized for MSPs in the SDM structure and then its potential application in optical isolator was also analyzed.
出处
《南通大学学报（自然科学版）》
CAS
2017年第3期1-5,共5页
Journal of Nantong University(Natural Science Edition)
基金
安徽省高校自然科学研究重点项目(KJ2016A759)
芜职院教授科研启动基金(JSGC201609)
