  We apply the methods of transformation optics to theoretical descriptions of
spacetimes that support closed null geodesic curves. The metric used is based
on frame dragging spacetimes, such as the van Stockum dust or the Kerr black
hole. Through transformation optics, this metric is analogous to a material
that in theory should allow for communication between past and future.
Presented herein is a derivation and description of the spacetime and the
resulting permeability, permittivity, and magneto-electric couplings that a
material would need in order for light in the material to follow closed null
geodesics. We also address the paradoxical implications of such a material, and
demonstrate why such a material would not actually result in a violation of
causality. A full derivation of the Plebanski equations is also included.
