The richer variety of Klein–Gordon basis is already established for discrete breathers in metamatetrials. Based on this attempt, we show various anomalous Fano resonance behaviors that have been experimentally observed, but cannot be explained by nonlinear Schrodinger model. Certain material parameters of Klein–Gordon lattice in metamaterials are related for the first time with characteristics of Fano resonance, which can be utilized for beam filtering and for high-resolution biological sensing technology. Although relations with coupling and other parameters exist, the most remarkable relation is observed with linear permittivity that could control the wave transmission characteristics in metamaterials for applications in optical engineering.
© 2012 Optical Society of America
Original Manuscript: May 15, 2012
Revised Manuscript: July 15, 2012
Manuscript Accepted: July 19, 2012
Published: August 16, 2012
Kamal Choudhary, Sutapa Adhikari, Arindam Biswas, Aniruddha Ghosal, and Asis Kumar Bandyopadhyay, "Fano resonance due to discrete breather in nonlinear Klein–Gordon lattice in metamaterials," J. Opt. Soc. Am. B 29, 2414-2419 (2012)