Nature Communications (Jun 2020)

Parity-time symmetry in wavelength space within a single spatial resonator

  • Jiejun Zhang,
  • Lingzhi Li,
  • Guangying Wang,
  • Xinhuan Feng,
  • Bai-Ou Guan,
  • Jianping Yao

DOI
https://doi.org/10.1038/s41467-020-16705-8
Journal volume & issue
Vol. 11, no. 1
pp. 1 – 7

Abstract

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Most conventional PT-symmetric systems contain two physically separated modes. Here the authors proposed a PT-symmetric microwave optoelectronic oscillator, where the gain and loss modes are confined in a single spatial resonator, resulting in an increased structural simplicity, and long-term stability.