Nature Communications (Dec 2018)

Topological one-way fiber of second Chern number

  • Ling Lu,
  • Haozhe Gao,
  • Zhong Wang

DOI
https://doi.org/10.1038/s41467-018-07817-3
Journal volume & issue
Vol. 9, no. 1
pp. 1 – 7

Abstract

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Topological one-way fibers are promising candidates for novel fiber devices. Here, Lu et al. propose that one-way fiber modes are topologically protected by the second Chern number in a four-dimensional parameter space, which develop in a helically-modulated magnetic Weyl photonic crystal.