The Line Shape of Double-Sided Tooth-Disk Waveguide Filters Based on Plasmon-Induced Transparency

• 作 者: 张新元 王鲁橹 陈召 崔鲁娜 尚策 赵玉芳 段高燕 刘尖斌 于丽
• 机 构: School of Science and State Key Laboratory of Information Photonics and Optical Communications,Beiji
• 出 处: Chinese Physics Letters
• 发表日期: 2015年05期
• 关键词: resonator waveguide transparency photonic plasmon dielectric sided transmittance

We numerically investigate a coupled-resonator structure consisting of a stub resonator and a nanodisk resonator using a two-dimensional finite element method.Simulation results show that plasmon-induced transparency(PIT) occurs in the transmission spectra,and the sharp asymmetric Fano lines increase the sensitivity to 1.4 ×10~3 nm/RIU.We also analyze the properties of the structure with different radii of the nanodisk and the length of the tooth cavity.Moreover,we find that the PIT only happens when the staggered system is around a fixed location with different separate distances,which is not similar to the previous researches.Our model may be important to photonic-integrated circuits and the sensitivity in sensors.

We numerically investigate a coupled-resonator structure consisting of a stub resonator and a nanodisk resonator using a two-dimensional finite element method. Simulation results show that plasmon-induced transparency (PIT) occurs in the transmission spectra, and the sharp asymmetric Fano lines increase the sensitivity to 1.4 × 10 ~ 3 nm / RIU.We also analyze the properties of the structure with different radii of the nanodisk and the length of the tooth cavity. Moreover, we find that the PIT only happens when the staggered system is around a fixed location with different separate distances, which is not similar to the previous researches. Our model may be important to photonic-integrated circuits and the sensitivity in sensors.