基于表面等离子体的金属-非线性介质复合结构的全光调制

The all-optical modulation of metal-nonlinear dielectric composite structure on surface plasmon

针对传统的全光调制器件,提出了一种在金属-非线性介质复合结构中基于表面等离子体的高灵敏性、低泵浦光能量的全光调制方案。根据低入射光功率下激发表面等离子体局域零点能量起伏,改变金属邻近非线性介质的非线性折射率,影响表面等离子体模式的共振条件,从而实现对信号光的调控。

In comparison with the traditional all-optical modulator, a new high sensitive, low pump light intensity all-optical modulation project of metal-nonlinear dielectric composite structure on the surface plasmon modes was designed. The zero-point fluctuations of surface plasmon modes at low light intensity were shown to change the nonlinear refractive index of nonlinear dielectric, which may be sufficiently large to influent the resonance condition of surface plasmon modes. Thus, the all-optical modulation was obtained.