带有环形谐振器的1×2光子晶体功率分配器传输性能
Transmission performance of 1×2 type photonic crystal power splitter based on ring resonators
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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。Abstract: The structure of 1×2 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.
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