Frontiers in Materials (Mar 2022)

Enhanced Magneto-Optical Effect in Heterostructures Composed of Epsilon-Near-Zero Materials and Truncated Photonic Crystals

  • Shengyu Hu,
  • Zhiwei Guo,
  • Zhiwei Guo,
  • Lijuan Dong,
  • Fusheng Deng,
  • Haitao Jiang,
  • Hong Chen

DOI
https://doi.org/10.3389/fmats.2022.843265
Journal volume & issue
Vol. 9

Abstract

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Optical non-reciprocal transmission plays an important role in many applications such as optical isolation, switching, and integrated photonic circuits. However, the non-reciprocity of natural magneto-optical (MO) materials is too weak to be widely used in the actual applications. Magnetized metamaterials enable the exploration of a new regime about the MO effect, including the enhanced non-reciprocal transmission and one-way surface waves. In this work, the Fano-type interference effect is studied in the heterostructure composed of a magnetized epsilon-near-zero material and a truncated photonic crystal. The inherent weak MO activity is significantly enhanced in the heterostructure because of the field intensity enhancement mechanism and Fano interference. The results provide a way to design novel optical non-reciprocal devices with excellent performance using metamaterials.

Keywords