Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7924765 | Optics Communications | 2018 | 5 Pages |
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 6Ã106 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 24Â h a day.
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
Bingcheng Du, Yong Wang, E Wu E Wu, Xiuliang Chen, Guang Wu,