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量子密钥分发与经典通信融合共纤传输研究
Research on Co-propagation System Integrating Quantum Key Distribution and Classical Communication
- 光通信研究 2025年第3期
- 作者机构：
1.中国电信股份有限公司上海分公司，上海 200000
2.烽火通信科技股份有限公司，武汉 430070
- 作者简介：
陈乐贤（1981-），男，上海人。高级工程师，硕士，主要研究方向为承载网相关的网络发展规划与建设。
付玉笛，工程师。E-mail：ydfu@fiberhome.com
- 基金信息：湖北省重点研发计划资助项目(2022BA007)
DOI：10.13756/j.gtxyj.2025.240171
中图分类号： TN918收稿日期：2024-08-09，
修回日期：2024-09-20，
纸质出版日期：2025-06-10
- 稿件说明：
移动端阅览
陈乐贤，周慧，付玉笛. 量子密钥分发与经典通信融合共纤传输研究[J]. 光通信研究，2025(3): 240171.
Chen L X, Zhou H, Zeng X H, et al. Research on Co-propagation System Integrating Quantum Key Distribution and Classical Communication[J]. Study on Optical Communications, 2025(3): 240171.
陈乐贤，周慧，付玉笛. 量子密钥分发与经典通信融合共纤传输研究[J]. 光通信研究，2025(3): 240171. DOI： 10.13756/j.gtxyj.2025.240171.
Chen L X, Zhou H, Zeng X H, et al. Research on Co-propagation System Integrating Quantum Key Distribution and Classical Communication[J]. Study on Optical Communications, 2025(3): 240171. DOI： 10.13756/j.gtxyj.2025.240171.
摘要
【目的】
2
开发量子与通信融合设备，实现单模光纤网络中的量子信号与经典信号共纤传输，可有效推动量子密钥分发（QKD）技术的应用推广。
【方法】
2
文章通过对共纤传输的需求和关键技术进行分析，提出了一种在C波段密集波分复用（DWDM）系统中连续变量（CV）QKD信号与经典信号共纤传输的方法，并首次将QKD系统集成到光通信传输设备之中。
【结果】
2
实验测试结果证明，在C波段内CV-QKD可以与C96波段经典信道共存，在67 km链路20.5 dB衰减情况下，可获得0.42 kbit/s的密钥速率。
【结论】
2
文章所提方案在量子密钥成码率（SKR）、稳定性和共纤兼容性等方面具有较好性能。文章进一步对量子网络应用方案进行了分析展望，为构建一体化量子安全通信网络提供了技术支持。
Abstract
【Objective】
2
Developing devices that integrate quantum technology with communication enables the coexistence of quantum signals and classical signals in single-mode fiber networks. This can effectively promote the application and popularization of Quantum Key Distribution (QKD) technology.
【Methods】
2
The paper
through the analysis of the requirements and key technologies for co-fiber transmission
proposes a method for Continuous Variable (CV)-QKD signals and classical signals to be transmitted over the same fiber in a C-band Dense Wavelength Division Multiplexing (DWDM) system. It also
for the first time
integrates the QKD system into optical communication transmission equipment.
【Results】
2
Experimental test results prove that CV-QKD can coexist with 96 classic channels in C band. Through the 67 km link with 20.5 dB attenuation
a key rate of 0.42 kbit/s can be obtained.
【Conclusion】
2
The proposed scheme has good performance in terms of quantum key rate
stability
and co-propagation compatibility. The article further analyzes and prospects quantum network application solutions
providing technical support for building an integrated quantum secure communication network.
关键词
Keywords
references
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Gavignet P , Mondain F , Pincemin E , et al . Co-propagation of 6 Tb/s (60*100 Gb/s) DWDM & QKD Channels with ~17 dBm Aggregated WDM Power over 50 km Standard Single Mode Fiber [C ] // 2023 Optical Fiber Communication Conference (OFC) . San Diego, CA, USA : IEEE , 2023 : Tu3H.2 .
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Kleis S , Steinmayer J , Derksen R H , et al . Experimental Investigation of Heterodyne Quantum Key Distribution in the S-band Embedded in a Commercial DWDM System [C ] // 2019 Optical Fiber Communications Conference and Exhibition (OFC) . San Diego, CA, USA : IEEE , 2019 : 8696283 .
Stathis A , Ntanos A , Lyras N K , et al . Coexistence of Quantum/Classical Signals over Converged Fiber/FSO Links for Intra-campus Networking [C ] // 49th European Conference on Optical Communications (ECOC 2023) . Glasgow, UK : IET , 2023 : 10484712 .
Eriksson T A , Hirano T , Puttnam B J , et al . Wavelength Division Multiplexing of Continuous Variable Quantum Key Distribution and 18.3 Tbit/s Data Channels [J ] . Communications Physics , 2019 , 2 : 9 .
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