Metamaterial polarization spectral filter: Isolated transmission line at any prescribed wavelength

We demonstrate that a narrowband spectral filter with a ripples-free isolated transmission peak and wide acceptance angle can be constructed exploiting polarization properties of a metal film patterned on the subwavelength scale. Its transmission band can be engineered to be anywhere from the visible to microwaves. (C) 2011 American Institute of Physics. [doi:10.1063/1.3656286]