CAJ | 학술논문

采用时域有限差分法（FDTD）对太赫兹波在光子晶体中传输进行仿真研究，得到了晶格常数和空气孔径对阻带性能的影响关系。在分析点缺陷对透射峰影响的基础上，设计了225GHz，3db通带带宽为1.9GHz的工字型缺陷光子晶体太赫兹滤波器，并对该滤波器进行了仿真分析，研究表明该滤波器能够实现对225GHz频段的有效滤波。
채용시역유한차분법（FDTD）대태혁자파재광자정체중전수진행방진연구，득도료정격상수화공기공경대조대성능적영향관계。재분석점결함대투사봉영향적기출상，설계료225GHz，3db통대대관위1.9GHz적공자형결함광자정체태혁자려파기，병대해려파기진행료방진분석，연구표명해려파기능구실현대225GHz빈단적유효려파。
By using the finite difference domain method (FDTD) to research the simulation of terahertz transmission in the photonic crystals, the influence relation of lattice constant and air aperture to stopband was obtained. Based on the analysis of the effect of point defects on the transmission peaks, we designed the I-shaped defect photonic crystal terahertz filter which has center frequency of 225GHz and 3db passband bandwidth of 1.9GHz. the filter can effectively achieve the 225GHz band in our simulation of the filter.