This Letter presents an analytical expression for the equivalent impedance of the fundamental mode of both 2D and 3D metal–insulator–metal (MIM) plasmonic waveguides. It also presents circuit models for passive 2D MIM waveguide components represented by additional parasitic circuit elements. Moreover, a modeling library for various 2D MIM waveguide structures is developed. The proposed analytical results have been verified and show great accuracy compared to the full-wave characterizations.
© 2013 Optical Society of America
Original Manuscript: January 31, 2013
Revised Manuscript: August 5, 2013
Manuscript Accepted: August 5, 2013
Published: August 26, 2013
Dongying Li and Er-Ping Li, "Impedance calculation and equivalent circuits for metal–insulator–metal plasmonic waveguide geometries," Opt. Lett. 38, 3384-3386 (2013)