Laser communication based on a multi-channel single-photon detector

Bingcheng Du, Yong Wang, Wu E Wu, Xiuliang Chen, Guang Wu

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

We demonstrate a free-space laser communication system with a multi-channel single-photon detector to improve the efficiency of transmission. On account of the photon-number-resolving capability, the discrimination level is adjustable to optimize the extraction of effective signals from the background noise. This method greatly reduces the error bit rate even under the high intensity of the background noise of 6×106 counts/s in daylight. Meanwhile, combined with the pulse position modulation, the bandwidth of the laser communication system can be improved greatly. This study paves the way to the high accuracy and high speed free-space optical communication for 24 h a day.

Original languageEnglish
Pages (from-to)89-93
Number of pages5
JournalOptics Communications
Volume426
DOIs
StatePublished - 1 Nov 2018

Keywords

  • Laser communication
  • Photon-number-resolving detector
  • Single-photon detection

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