  We propose and investigate an "interface-flattening" transformation, hinging
upon Transformation Optics (T.O.) techniques, to facilitate the rigorous
analysis of electromagnetic (EM) fields radiated by sources embedded in tilted,
cylindrically-layered geophysical media. Our method addresses the major
challenge in such problems of appropriately approximating the domain boundaries
in the computational model while, in a full-wave manner, predicting the effects
of tilting in the layers. When incorporated into standard pseudo-analytical
algorithms, moreover, the proposed method is quite robust, as it is not limited
by absorption, anisotropy, and/or eccentering profile of the cylindrical
geophysical formations, nor is it limited by the radiation frequency. These
attributes of the proposed method are in contrast to past analysis methods for
tilted-layer media that often place limitations on the source and medium
characteristics. Through analytical derivations as well as a preliminary
numerical investigation, we analyze and discuss the method's strengths and
limitations.
