The photon tunneling phenomena in the composite barrier of both positive index material and negative index medium (NIM) are analyzed. A negative barrier-length concept is introduced for the tunneling photon in the NIM, which facilitates the analysis of a composite barrier. In addition to transmission and reflection coefficients, some comments on the post-tunneling position and stationary-phase tunneling time are given.

The photon tunneling phenomena in the composite barriers of single-negative materials were analyzed. It was found that the tunneling through such a barrier shifts TE- and TM-polarization light waves laterally (parallel to the material interface) in two opposite directions, causing them to be divided into two waves after tunneling. This property could not be obtained with double-positive and (or) double-negative materials.

No abstract

No abstract

No abstract