J. Phys.: Condens. Matter

Volume 14, Page 4035

2002

Photonic band-gap effects and magnetic activity in dielectric composites

 

Stephen O’Brien and JB Pendry

Abstract:

We develop an effective medium description of a two-dimensional photonic band-gap medium composed of dielectric cylinders of large dielectric constant. Using the transfer matrix method we have calculated reflection coefficients for a slab of the composite and plane-wave incidence, as well as the (complex) wavevector for the infinite system. From these quantities we derive an effective permittivity and permeability for the composite. In the case of p-polarized incidence the composite displays a negative magnetic permeability at microwave  frequencies due to single-scatterer resonances in the medium.

 

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