Integrated sensing and communication in an optical fibre

Haijun He; Lin Jiang; Yan Pan; Anlin Yi; Xihua Zou; Wei Pan; Alan E. Willner; Xinyu Fan; Zuyuan He; Lianshan Yan

doi:10.1038/s41377-022-01067-1

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Integrated sensing and communication in an optical fibre

Original Articles

- Integrated sensing and communication in an optical fibre
- Integrated sensing and communication in an optical fibre
- 光：科学与应用 2023年12卷第5期页码：729-742
- Affiliations：
  
  1.Center for Information Photonics & Communications, School of Information Science and Technology, Southwest Jiaotong University, 611756, Chengdu, Sichuan, China
  2.Peng Cheng Laboratory, 518052, Shenzhen, China
  3.Optical Fiber Communications Laboratory, University of Southern California, Los Angeles, CA, 90089, USA
  4.State Key Laboratory of Advanced Optical Communication Systems and Networks, Shanghai Jiao Tong University, 200240, Shanghai, China
- Author bio：
  
  Lianshan Yan (lsyan@home.swjtu.edu.cn)
- Funds：
- DOI：10.1038/s41377-022-01067-1
  中图分类号：
- 纸质出版日期：2023-5-31，
  
  网络出版日期：2023-1-17，
  
  收稿日期：2022-8-31，
  
  修回日期：2022-12-14，
  
  录用日期：2022-12-28
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Integrated sensing and communication in an optical fibre[J]. 光：科学与应用, 2023,12(5):729-742.

He, H. J. et al. Integrated sensing and communication in an optical fibre. Light: Science & Applications, 12, 729-742 (2023).
Integrated sensing and communication in an optical fibre[J]. 光：科学与应用, 2023,12(5):729-742. DOI： 10.1038/s41377-022-01067-1.

He, H. J. et al. Integrated sensing and communication in an optical fibre. Light: Science & Applications, 12, 729-742 (2023). DOI： 10.1038/s41377-022-01067-1.

摘要

Abstract

The integration of high-speed optical communication and distributed sensing could bring intelligent functionalities to ubiquitous optical fibre networks

such as urban structure imaging

ocean seismic detection

and safety monitoring of underground embedded pipelines. This work demonstrates a scheme of integrated sensing and communication in an optical fibre (ISAC-OF) using the same wavelength channel for simultaneous data transmission and distributed vibration sensing. The scheme not only extends the intelligent functionality for optical fibre communication system

but also improves its transmission performance. A periodic linear frequency modulation (LFM) light is generated to act as the optical carrier and sensing probe in PAM4 signal transmission and phase-sensitive optical time-domain reflectometry (Φ-OTDR)

respectively. After a 24.5 km fibre transmission

the forward PAM4 signal and the carrier-correspondence Rayleigh backscattering signal are detected and demodulated. Experimental results show that the integrated solution achieves better transmission performance (~1.3 dB improvement) and a larger launching power (7 dB enhancement) at a 56 Gbit/s bit rate compared to a conventional PAM4 signal transmission. Meanwhile

a 4 m spatial resolution

4.32-

nε

$$\sqrt{Hz}$$

strain resolution

and over 21 kHz frequency response for the vibration sensing are obtained. The proposed solution offers a new path to further explore the potential of existing or future fibre-optic networks by the convergence of data transmission and status sensing. In addition

such a scheme of using shared spectrum in communication and distributed optical fibre sensing may be used to measure non-linear parameters in coherent optical communications

offering possible benefits for data transmission.

关键词

Keywords

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