Open AccessObservation of broadband unidirectional transmission by fusing the one-way edge states of gyromagnetic photonic crystals
Author(s) -
Zhen Li,
RuiXin Wu,
Qingbo Li,
Zhen Lin,
Yin Poo,
Rongjuan Liu,
Zhiyuan Li
Publication year - 2015
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.23.009658
Subject(s) - broadband , optics , bandwidth (computing) , photonics , photonic crystal , scattering , transmission (telecommunications) , physics , microwave , microwave transmission , bragg's law , extraordinary optical transmission , resonance (particle physics) , materials science , optoelectronics , surface plasmon , plasmon , telecommunications , diffraction , computer science , surface plasmon polariton , quantum mechanics , particle physics
We experimentally demonstrate a broadband one-way transmission by merging the operating bands of two types of one-way edge modes that are associated with Bragg scattering and magnetic surface plasmon (MSP) resonance, respectively. By tuning the configuration of gyromagnetic photonic crystals and applied bias magnetic field, the fused bandwidth of unidirectional propagation is up to 2 GHz in microwave frequency range, much larger than either of the individual one-way bandwidth associated with Bragg scattering or MSP resonance. Our scheme for broadband one-way transmission paves the way for the practical applications of one-way transmission.