Observation of backscattering-immune chiral electromagnetic modes without time reversal breaking

Details Observation of backscattering-immune chiral electromagnetic modes without time reversal breaking Observation of backscattering-immune chiral electromagnetic modes without time reversal breaking

2011-04-27

arxiv.org/abs/1104.5114v1

Physics

Optics

16 pages, 5 figures

Scientific paper

A strategy is proposed to realize robust transport in time reversal invariant photonic system. Using numerical simulation and microwave experiment, we demonstrate that a chiral guided mode in the channel of a three-dimensional dielectric woodpile photonic crystal is immune to the scattering of a square patch of metal or dielectric inserted to block the channel. The chirality based robust transport can be realized in nonmagnetic dielectric materials without any external field.

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