Scaling two-dimensional photonic crystals for transformation optics
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review
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Related Research Unit(s)
Detail(s)
Original language | English |
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Pages (from-to) | 16821-16829 |
Journal / Publication | Optics Express |
Volume | 19 |
Issue number | 18 |
Publication status | Published - 29 Aug 2011 |
Link(s)
Abstract
We propose a method to manipulate Bloch waves in curved photonic crystals for achieving transformation optical devices in two dimensions. Instead of starting from an effectively homogeneous medium, we transform a regular photonic crystal into a curved one in the physical space. A scaling law is established to construct the curved photonic crystal with similar unit cells and different scales, which is made of dielectrics only. A wave compressor and a bending waveguide are designed using dielectrics with indices only from 1 to 4. The approach will be useful in constructing low-loss transformation media requiring small indices, or large anisotropy which is particularly difficult for E-polarization using the conventional effective medium approach. © 2011 Optical Society of America.
Citation Format(s)
Scaling two-dimensional photonic crystals for transformation optics. / Liang, Zixian; Li, Jensen.
In: Optics Express, Vol. 19, No. 18, 29.08.2011, p. 16821-16829.
In: Optics Express, Vol. 19, No. 18, 29.08.2011, p. 16821-16829.
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review