YD/T 4632-2023
Quantum key distribution and classical optical communication co-fiber transmission technical requirements (English Version)
- Standard No.
- YD/T 4632-2023
- Language
- Chinese, Available in English version
- Release Date
- 2023
- Published By
- Professional Standard - Post and Telecommunication CN / YD
- Latest
- YD/T 4632-2023
- Introduction
Technical Background and Evolution of Standards
With the development of quantum communication technology, the integration of Quantum Key Distribution (QKD) systems and existing optical communication networks has become a key issue. This standard systematically specifies the transmission technology requirements of QKD and classical optical signals in the same optical fiber under the BB84 and GG02 protocols for the first time, solving key technical problems such as wavelength interference and power control.
Core parameter requirements
Equipment type Key indicators CWDM requirements CWDM+DWDM requirements Combiner Quantum channel insertion loss ≤1.5dB ≤1.8dB Channel isolation ≥60dB ≥80dB Polarization dependent loss ≤0.15dB ≤0.2dB
Typical Application Scenario Analysis
Short-distance Transmission in Metropolitan Area Network (10km)
Test data shows that: under 5dB line loss, the average key coding rate of the BB84-CWDM-Q1C5 system reaches 30.6kbps, and the synchronous optical receiving power needs to be maintained above -47.38dBm.
Long-distance Transmission in Core Network (30km)
When using the GG02-WDM-Q1C4 configuration, the key rate drops to 2.29kbps under 15dB loss environment, and special attention should be paid to the 1571nm synchronous optical power attenuation control.
Implementation suggestions
- Wavelength planning: Quantum channels should use 1550.12nm first, and classical signals should avoid the 1571nm synchronization band
- Power control: The power of the classical signal at the transmitting end is recommended to be controlled at 3-4dBm, and the quantum signal at the receiving end must be guaranteed to be >-56dBm
- Troubleshooting: When the key rate drops by 50%, the OSC channel optical power and polarization state should be checked first
Technology development trend
The research directions of DWDM pure quantum channels and multi-protocol compatibility reserved in the standard indicate that the future will develop towards more than 100 channels wavelength division multiplexing and 1Gbps-level key rate.
YD/T 4632-2023 Referenced Document
- IEEE 802.3-2018 IEEE Standard for Ethernet
- YD/T 1383-2005 Technical requirements for WDM element management system
- YD/T 3391-2018 General Technical Requirements for Optical Wavelength Division Multiplexing (WDM) System
- YD/T 3834.1-2021 Quantum Key Distribution (QKD) System Technical Requirements Part 1: QKD System Based on Decoy State BB84 Protocol
YD/T 4632-2023 history
- 2023 YD/T 4632-2023 Quantum key distribution and classical optical communication co-fiber transmission technical requirements
