摘要
因为金属内部的吸收损耗,表面等离子体波导的应用受到了阻碍。通过在电介质芯中引入非线性材料,提出了参量增益机制来补偿纳米尺寸金属-绝缘体-金属(MIM)波导中的传输损耗。有限差分时域法(FDTD)进行仿真结果表明,使用此方法群速度为0.005c的慢光的传播长度显著增加到为原来的四倍。
Surface plasmon polaritons (SPPs)-based wavegmdes sutter trom ramer strong uampm~ caused by inherent absobtion losses in metal. Here by introducing nonlinear material to the dielectric core, this paper proposes parametric gain (PG) mechanism to compensate for propagation losses in nanoscale metal-insulator-metal ( MIM ) waveguides. Using finite-difference time-domain ( FDTD ) simulation, a significant enhancement ( ~ 400% ) of the propagation length of a ultraslow light (0. 005c) has been demonstrated.
出处
《信息技术》
2012年第9期62-65,共4页
Information Technology
关键词
参量增益
表面等离子体
慢光
金属-绝缘体-金属波导
parametric gain (PG)
surface plasmon polaritons (SPPs)
slow light
metal-insulator-metal (MIM) waveguide