Magnetically controllable circulator based on photonic crystal unidirectional waveguide consisting of metamaterials

Wenyao Liang

doi:10.1117/12.2236158

16 September 2016 Magnetically controllable circulator based on photonic crystal unidirectional waveguide consisting of metamaterials

Wenyao Liang

Author Affiliations +

Proceedings Volume 9918, Metamaterials, Metadevices, and Metasystems 2016; 99182H (2016) https://doi.org/10.1117/12.2236158
Event: SPIE Nanoscience + Engineering, 2016, San Diego, California, United States

Abstract

Unidirectional edge modes are achieved in gyromagnetic photonic crystals. The physical reason is attributed to magnetic resonance and broken time-reversal symmetry under external magnetic fields. These edge modes propagate only along a single direction, while the backward modes are completely suppressed. The unidirectional transmittance is nearly 100% and hardly affected by perfect electric conductor (PEC) defect. However, a PEC defect has sensitive influence on both the phase delay and pattern distribution of unidirectional edge modes. These properties hold promise in designing various unidirectional devices. Here we design a three port circulator with high transmission contrast and magnetic controllability simultaneously.

Citation Download Citation

Wenyao Liang "Magnetically controllable circulator based on photonic crystal unidirectional waveguide consisting of metamaterials", Proc. SPIE 9918, Metamaterials, Metadevices, and Metasystems 2016, 99182H (16 September 2016); https://doi.org/10.1117/12.2236158

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