Impedance generalization for plasmonic waveguides beyond the lumped circuit model

Article

关键词: PHOTONIC CRYSTALS;    NANOCIRCUITS;    NANOANTENNAS;    REFLECTION;    REFRACTION;   

DOI  :  10.1103/PhysRevB.88.035117

来源: SCIE

【 摘 要 】

We analytically derive a rigorous expression for the relative impedance ratio between two photonic structures based on their electromagnetic interaction. Our approach generalizes the physical meaning of the impedance to a measure for the reciprocity-based overlap of eigenmodes. The consistency with known cases in the radio-frequency and optical domain is shown. The analysis reveals where the applicability of simple circuit parameters ends and how the impedance can be interpreted beyond this point. We illustrate our approach by successfully describing a Bragg reflector that terminates an insulator-metal-insulator plasmonic waveguide in the near infrared by our impedance concept.

【 授权许可】

Free