Work

Research on Key Technologies of Quantum-Safe Metro-Optimized Optical Transport Networks

Year: 2025

Type: article

Abstract: This research introduces a novel physical-layer encryption technique for metropolitan-optimized optical transport networks (M-OTNs) that integrates real-time optical signal time-domain scrambling/descrambling with decoy-state quantum key distribution (DS-QKD). The method processes real-time optical data from the optical service unit (OSU) using a series of tunable Fabry–Perot cavities (FPCs), synchronized and updated with a running key. Experimental validation demonstrates secure communication within the optical network’s physical layer during standard OTU2 data transmission (10.709 Gbps), achieving an online transmission distance exceeding 100 km over typical single-mode fiber with a power loss of approximately 1.77 dB. The results indicate that this integrated approach significantly enhances the security of the optical physical layer in M-OTNs.

Source: Applied Sciences

DOI: 10.3390/app15052809

Authors: Wei Zhou, Bingli Guo, Boying Cao, Xiaohui Cheng

Institutions: China Electronics Technology Group Corporation, Beijing University of Posts and Telecommunications, State Key Laboratory of Information Photonics and Optical Communications, Guilin University of Technology, Guangxi Key Laboratory of Embedded Technology and Intelligent System

Language: English

Topic: Quantum Information and Cryptography

Subfield: Artificial Intelligence

Field: Computer Science

Domain: Physical Sciences

SDG: Industry, innovation and infrastructure

Open Access status: gold

Estimated APC paid: $2,896