We show that a second-order magnetic resonance present in the fishnet metamaterial can be enhanced so as to achieve simultaneous negative permittivity and permeability in the visible range. The double-negative behavior leads to reduced losses in this particular fishnet metamaterial. We also study the stacking of several functional layers, verifying the convergence of the refractive index.
© 2009 Optical Society of America
Optics at Surfaces
Original Manuscript: November 14, 2008
Revised Manuscript: March 11, 2009
Manuscript Accepted: April 17, 2009
Published: May 15, 2009
C. García-Meca, R. Ortuño, F. J. Rodríguez-Fortuño, J. Martí, and A. Martínez, "Double-negative polarization-independent fishnet metamaterial in the visible spectrum," Opt. Lett. 34, 1603-1605 (2009)