摘要
设计了一种基于InP材料的纳米光栅耦合器,运用FDTD算法分析了周期长度、刻蚀深度以及占空比变化时该光栅耦合器的耦合效率。计算结果表明,周期长度为800nm,刻蚀深度为0.3μm,占空比接近0.5时,耦合效率可以达到13%。本文所设计的光栅耦合器对构建基于InP材料的谐振腔、激光器和陀螺结构具有一定的理论指导意义。
A InP-based nano-grating coupler was designed. Using the finite difference time domain （FDTD） algorithm, the coupling efficiency of the grating coupler was analyzed when the cycle, the groove depth and the duty cycle were changed. The result showed that the coupling efficiency can reach to 13% when the cycle is 800 nm, the groove depth is 0.3 μm and the duty cycle is close to 0. 5. The grating coupler designed in this paper provided a theoretical guiding for the construction of resonator,laser and gyro structure based on InP material.
出处
《量子光学学报》
CSCD
北大核心
2014年第4期337-341,共5页
Journal of Quantum Optics
基金
国家自然科学基金(61275166
61076111)
关键词
INP材料
光栅
FDTD算法
耦合效率
indium phosphide material
grating
efficiency Finite difference time domain algorithm
coupling
