CAJ | 학술논문

文中提出一种新型三重三角晶格光子晶体，应用平面波展开法( PWM )分析其带隙结构，应用时域有限差分法( FDTD)研究方形点缺陷的尺寸和旋转角度对缺陷模特性的影响。仿真结果表明，该光子晶体的光子禁带处于THz波段范围内，且禁带宽度很宽，达到0.19562。当方形点缺陷旋转角度为10毅时，改变点缺陷尺寸，此时缺陷模个数发生变化，并且随着点缺陷尺寸的增大，缺陷模波长往长波长方向移动；当方形点缺陷边长为22.5μm时，改变点缺陷旋转角度，此时缺陷模位置基本不变，但是缺陷模个数发生变化。
문중제출일충신형삼중삼각정격광자정체，응용평면파전개법( PWM )분석기대극결구，응용시역유한차분법( FDTD)연구방형점결함적척촌화선전각도대결함모특성적영향。방진결과표명，해광자정체적광자금대처우THz파단범위내，차금대관도흔관，체도0.19562。당방형점결함선전각도위10의시，개변점결함척촌，차시결함모개수발생변화，병차수착점결함척촌적증대，결함모파장왕장파장방향이동；당방형점결함변장위22.5μm시，개변점결함선전각도，차시결함모위치기본불변，단시결함모개수발생변화。
A novel triple triangular lattice photonic crystal is proposed in this paper. The band gap property is analyzed by the plane wave method and the effect of the square point defect on the characteristics of defect modes is researched by the finite difference time domain method. The simulation results show that the photonic band gap of the photonic crystal is in the THz wave band and the gap width is as large as 0. 195 62. When the rotation angle of the square point defect is 10°,with the increase of the size length,the number of the defect modes will change and the wavelength of the defect modes move towards the longer wavelength. When the side length of the point defect is 22. 5 μm,with the changing of the rotation angle,the number of the defect modes will change,but the corresponding wavelengths will not change.