摘要
为研究光子晶体结构参数改变对直波导结构的模式转化器效率的影响,通过改变光子晶体间距和形状两个参数,并结合时域有限差分法和直接二元搜索算法分析直波导型模式转化器对应转换效率。仿真结果表明,在正方形光子晶体间距为150 nm时,器件转换效率为94.8%,收敛时间为87分钟。在波长范围在1500 nm到1600 nm时,圆形光子晶体可在64 nm带宽范围内转换效率优于其他两种形状。
In order to study the effect of the change of photonic crystal structure parameters on the efficiency of the mode converter of the straight waveguide structure,the conversion efficiency of the straight waveguide mode converter is analyzed by changing the two parameters of photonic crystal spacing and shape,and combining the finite difference time domain method and the direct binary search algorithm.The simulation results show that when the square photonic crystal spacing is 150 nm,the conversion efficiency of the device is 94.8%,and the convergence time is 87 minutes.In the wave-length range of 1500 nm to 1600 nm,the conversion efficiency of circular photonic crystals is superior to the other two shapes in the 64 nm bandwidth.
出处
《工业控制计算机》
2023年第10期122-123,共2页
Industrial Control Computer
基金
2022年国家级创新创业学院建设校级教改研究项目(CY20221101)。
关键词
模式转换器
硅波导
光子晶体
直接二元搜索算法
mode converter
silicon waveguide
photonic crystal
direct binary search algorithm
