Publications

See a list of publications below or visit the Photonics academic staff page and click on a particular  member of staff to access their personal web page, which includes a list of their own publications.

Citation

BibTex format

@article{McCall:2015,
author = {McCall, MW},
journal = {Journal of Optics},
title = {The Refractive Index of Electromagnetically Reciprocal Media},
url = {http://hdl.handle.net/10044/1/29938},
year = {2015}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - We study the electromagnetics of media described by identical inhomogeneous relative dielectric and magnetic tensors, € = µ. Such media occur generically as spatial transformation media , i.e. electromagnetic media that are defined by a deformation of space. We show that such media are completely described by a refractive index n (r,) that depends on position r and direction, but is independent of polarization. The phase surface is alwaysellipsoidal, and n (r,) is therefore represented by the radius vector to the surface of the ellipsoid. We apply our method to calculate the angular dependence of the refractive index in the well-studied cylindrical cloak and to a new kind of structurally chiral medium induced by a twist deformation. By way of a simple example we also show that media for which € = µ do notin general preserve the impedance properties of vacuum. The implications ofthis somewhat surprising conclusion for the field of transformation optics are discussed.
AU  - McCall,MW
PY  - 2015///
SN  - 2040-8978
TI  - The Refractive Index of Electromagnetically Reciprocal Media
T2  - Journal of Optics
UR  - http://hdl.handle.net/10044/1/29938
ER  -
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