Abstract

It is experimentally demonstrated that within the photonic band gap induced by magnetic surface plasmon (MSP) resonance in a honeycomb magnetic photonic crystal, there can exist self-guiding electromagnetic chiral edge states whose dispersion curves are insensitive to the surface morphology when the system is truncated. The unique characteristic of the MSP induced edge states enables flexible design of robust unidirectional subwavelength waveguides that contain bends at various angles, providing an alternative way for manipulating electromagnetic waves at subwavelength scales.

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