CAJ | 학술논문

利用时域有限差分法，研究了具有亚波长倾斜边狭缝周期性结构金属膜的透射特性。研究发现：当改变2层狭缝的侧向位移时，透射谱发生变化。通过分析电场和总电磁场能量分布图，揭示了透射源于2种不同的共振机制：限制在狭缝内区域的局域波导共振模式和电磁场能量分布在狭缝两端的表面等离子体共振模式。
이용시역유한차분법，연구료구유아파장경사변협봉주기성결구금속막적투사특성。연구발현：당개변2층협봉적측향위이시，투사보발생변화。통과분석전장화총전자장능량분포도，게시료투사원우2충불동적공진궤제：한제재협봉내구역적국역파도공진모식화전자장능량분포재협봉량단적표면등리자체공진모식。
Presents the numerical investigation on optical transmission of the metallic film with subwavelength tilted edge silt structure by means of finite-difference time-domain （FDTD） method. The study shows that the transmission spectra are altered when the lateral displacements of 2-layer slits change. By analyzing the distribution of the electric field and electromagnetic energy, shows the mechanism of the two different resonances： the local waveguide resonance mode restricted inside the slits region and the surface plasma resonance mode while electric field and electromagnetic energy distributed at slits＇ two ends.