Properties of one-dimensional photonic crystal tunneling mode containing single-negative materials with symmetrical structure

An (AB)N (BA)N typed one-dimensional photonic crystal was constructed from electric single-negative material A and magnetic single-negative material B, and the simulated result from transfer matrix method shows that there appears a tunneling mode in the band gap. The tunneling mode exhibits the characteristics that it moves toward short-wavelength direction and its FWHM becomes narrow with increasing of the incident angle θ. The greater the incidence angle is, the more obvious these change will be. When the geometric thickness of the medium layer is increased, the mode moves linearly toward long-wavelength direction. When either the permittivity Εa of medium A or the permeability μB of medium B is increased, the mode moves non-linearly toward long-wavelength direction. In addition, a larger ΕA or a smaller μB will result in a narrower FWHM of the mode. However, the transmittance of the mode remains 1 all the time when changing those parameters above.