带有环形谐振器的1×2光子晶体功率分配器传输性能

摘要

利用正方格2维光子晶体设计了带有环形谐振器的1×2光子晶体功率分配器结构,该结构具有1个输入端口和2个输出端口.采用时域有限差分法研究了该功率分配器对电磁波的传输性能,结果表明:其结构在第三通信窗口(1 550 nm波长)实现了电磁波的高效传输,同时具有优良的电磁波通频带功率二等均分性,以及电磁波传输转向设计灵活、损耗低、结构紧凑等优点.%The structure of 1X 2 type photonic crystal power splitter with ring resonators is designed in a two-dimensional square-lattice dielectric-rod photonic-crystal structure, and it consists of one input and two outputs. Its electromagnetic wave transmission performance is investigated by using finite-difference time-domain method. The results show that the structure has a high transmission efficiency in the third communication window (wavelength 1 550 nm), and can split pass band electromagnetic waves equally. It is compact with low loss and design flexibility in propagation direction of electromagnetic waves.