features of the band gaps
V. Lazarev 1,2, A. M.
of Theoretical and Applied Electrodynamics of RAS
(Moscow Institute of Physics and Technology)
Received June 6, 2011
Usually, the formation of band gaps in photonic crystals (PCs) associated with
the condition of Bragg reflection, when the optical path length through the unit
cell size of half a wavelength. In this article we have shown that at high
contrast admittance values of layers, forming a one-dimensional PC, there can
be formed band gaps when the optical path length through the unit cell is much
less than half the wavelength. Physical implementation of this PC available in
the UHF range. Qualitative explanation of this effect is based on the multipass
derive the condition for resonance reflection applicable to photonic crystals
of a large contrast.
crystals, high contrast of
permeability constant, multipass.