EXTENSION OF BERENGER ABSORBING BOUNDARY-CONDITIONS TO MATCH DIELECTRIC ANISOTROPIC

The authors propose an extension of Berenger's perfectly matched layer (PML) absorbing boundary conditions (ABC's) to achieve a perfect matc hing of waves propagating in anisotropic media. Although the procedure to obtain the matching conditions is valid for any kind of anisotropi c material, it has been validated with a lossless two-dimensional unia xial medium, in which the optical axis is not contained in its plane s ection. The finite difference time domain method, with an alternative scheme for anisotropic media, is used to simulate the problem and to o btain the numerical reflection coefficient.