Creating electromagnetic cavities using transformation optics

Details Creating electromagnetic cavities using transformation optics Creating electromagnetic cavities using transformation optics

2011-08-02

arxiv.org/abs/1108.0598v2

New J. Phys. 14, 033007 (2012)

Physics

Optics

17 pages, 6 figures

Scientific paper

10.1088/1367-2630/14/3/033007

We investigate the potential of transformation optics for the design of novel electromagnetic cavities. First, we determine the dispersion relation of bound modes in a device performing an arbitrary radial coordinate transformation and we discuss a number of such cavity structures. Subsequently, we generalize our study to media that implement azimuthal transformations and we show that such transformations can manipulate the azimuthal mode number. Finally, we discuss how the combination of radial and azimuthal coordinate transformations allows for perfect confinement of subwavelength modes inside a cavity consisting of right-handed materials only.

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