›› 2014, Vol. 23 ›› Issue (9): 97301-097301.doi: 10.1088/1674-1056/23/9/097301
• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇 下一篇
张会云a, 申端龙a, 张玉萍a, 杨伟杰b, 袁偲c, 刘蒙a, 尹贻恒a, 吴志心a
Zhang Hui-Yun (张会云)a, Shen Duan-Long (申端龙)a, Zhang Yu-Ping (张玉萍)a, Yang Wei-Jie (杨伟杰)b, Yuan Cai (袁偲)c, Liu Meng (刘蒙)a, Yin Yi-Heng (尹贻恒)a, Wu Zhi-Xin (吴志心)a
摘要: Novel band-stop filters with circular split-ring resonators based on the metal-insulator-metal (MIM) structure are presented, with their transmission properties of SPPs propagating through the filter simulated by the finite-difference time-domain (FDTD) method. The variation of the gap of the split ring can affect the transmission characteristics, i.e., the transmission spectrum of SPPs exhibiting a shift, which is useful for modulating the filter. Linear and nonlinear media are used in the resonator respectively. By varying the refractive index of the linear medium, the transmission properties can be changed obviously, and the effect caused by changing the incident intensity with a nonlinear medium is similar. Several resonant modes that are applicable can be enhanced by changing the position of the gap of the split ring. Thus, the transmission properties can be modulated by adjusting the size of the gap, varying the refractive index, and changing the incident intensity of the input light. These methods may play significant roles in applications of optical integrated circuits and nanostructural devices.
中图分类号: (Collective excitations (including excitons, polarons, plasmons and other charge-density excitations))