量子密钥通信网信道复用方案研究

为降低量子密钥通信网建设成本,研究分析信道复用环境下的量子通信网络。针对目前主要的经典-量子信道复用方案,对较远波长隔离方案及同波段传输方案分别建立模型,仿真分析其系统性能。结果表明,较远波长隔离方案易于实现,在短距离通信中有良好的效果,可适用于短距离高密集局域网建设;同波段传输方案对信道隔离度有着较高要求,但更加符合经典光网络波段要求并有更远的通信距离,是量子密钥城域网建设的参考方案。

Channel Multiplexing Scheme in Optical Networking for Quantum Key Distribution

In order to reduce construction cost of quantum key communication network, the quantum communication network in the environment of channel multiplexing is analyzed. Aiming at the current classical quantum channel multiplexing scheme, the schemes of wavelength isolation and the similar wavelength transmission are modeled respectively, and the system performances also simulated and calculated.Analysis shows that the scheme of wavelength isolation is fairly feasible, performs fairly well in short-haul communication, and is suitable for short-distance intensive local area network. The scheme of similar wavelength has a fairly high requirement of channels isolation and however, but it is more suitable for classical optical networks with even longer communication distance.And this could serve as a reference program for constructing quantum key metropolitan area network.