用于量子密钥分发与经典光通信共存系统的低自发拉曼散射少模光纤
Few-Mode Fiber with Low Spontaneous Raman Scattering for Quantum Key Distribution and Classical Optical Communication Coexistence Systems.
作者信息
Zhao Qi, Tang Jianjun, Kong Weiwen, Zhao Zhenyu, Zheng Jingjing, Liu Yang
机构信息
Institute of Basic Operations Technology, China Telecom Research Institute, Beijing 102209, China.
China Academy of Information and Communications Technology, Beijing 102209, China.
出版信息
Sensors (Basel). 2024 Nov 29;24(23):7645. doi: 10.3390/s24237645.
In this paper, the theoretical model of spontaneous Raman scattering (SpRS) in few-mode fiber (FMF) is discussed. The influence of SpRS on quantum key distribution (QKD) in FMF is evaluated by combining wavelength division multiplexing (WDM) and space division multiplexing (SDM) techniques. On this basis, an improved ring-assisted FMF is designed and characterized; the transmission distance can be increased by up to 54.5% when choosing different multi-channels. The effects of forward and backward SpRS on QKD are also discussed.
本文讨论了少模光纤（FMF）中自发拉曼散射（SpRS）的理论模型。通过结合波分复用（WDM）和空分复用（SDM）技术，评估了SpRS对FMF中量子密钥分发（QKD）的影响。在此基础上，设计并表征了一种改进的环形辅助FMF；当选择不同的多通道时，传输距离可增加高达54.5%。还讨论了前向和后向SpRS对QKD的影响。
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