【摘要】 介绍了一种利用介质折射率的负变化量制作光开关的基本原理及时间响应特性。从其工作原理出发,分析了其内折射率变化的主要机制;通过详细的理论分析,得出折射率变化的表达式;并以此为基础深入讨论了影响其开关性能及时间响应特性的因素,所得结果与已有的实验报道相吻合。更多还原

【Abstract】 In this paper, the nonlinear optical effect of a sandwichlike optical switch composed of nonlinear media with negative refractive index variation and light irradiation is discussed. Starting from its fundamental theorem, we analyzed the mechanism of light-induced refractive index variation and inferred that the light-induced thermal effect is the major cause of the refractive index variation. Then, we discussed in detail the factors which influence the time response characteristics. The theoretical analysis agrees with the experimental results.更多还原