Nature Communications (Mar 2021)

1/f-noise-free optical sensing with an integrated heterodyne interferometer

  • Ming Jin,
  • Shui-Jing Tang,
  • Jin-Hui Chen,
  • Xiao-Chong Yu,
  • Haowen Shu,
  • Yuansheng Tao,
  • Antony K. Chen,
  • Qihuang Gong,
  • Xingjun Wang,
  • Yun-Feng Xiao

DOI
https://doi.org/10.1038/s41467-021-22271-4
Journal volume & issue
Vol. 12, no. 1
pp. 1 – 7

Abstract

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Suppressing 1/f-shaped low-frequency noise is critical but fundamentally challenging to both electrical and optical transducers. Here, the authors demonstrate a 1/f-noise-free optical sensor with integrated CMOS-compatible heterodyne interferometer and an upconversion amplifying technique, which suppresses the noise by two orders of magnitude.