Nature Communications (Sep 2019)

Free-space transfer of comb-rooted optical frequencies over an 18 km open-air link

  • Hyun Jay Kang,
  • Jaewon Yang,
  • Byung Jae Chun,
  • Heesuk Jang,
  • Byung Soo Kim,
  • Young-Jin Kim,
  • Seung-Woo Kim

DOI
https://doi.org/10.1038/s41467-019-12443-8
Journal volume & issue
Vol. 10, no. 1
pp. 1 – 8

Abstract

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Phase-coherent transfer of optical frequencies over long open-air paths is necessary in photonic applications. Here the authors demonstrate the parallel transmission of multiple optical carriers in air up to 18 km using a stable near-infrared frequency comb.