Ureña Mario, Gasulla Ivana, Fraile Francisco Javier, Capmany Jose
Opt Express. 2019 Mar 4;27(5):7047-7063. doi: 10.1364/OE.27.007047.
We report a model to use to evaluate the performance of multiple quantum key distribution (QKD) channel transmission using spatial division multiplexing (SDM) in multicore (MCF) and few-mode fibers (FMF). This model is then used to analyze the feasibility of QKD transmission in 7-core MCFs in two practical scenarios involving the (1) transmission of only QKD channels and (2) simultaneous transmission of QKD and classical channels. In the first case, standard homogeneous MCFs enable transmission distances per core compatible with transmission parameters (distance and net key rate) very close to those of single-core single-mode fibers. For the second case, heterogeneous MCFs must be employed to make this option feasible.
我们报告了一个用于评估在多芯光纤（MCF）和少模光纤（FMF）中使用空分复用（SDM）进行多量子密钥分发（QKD）信道传输性能的模型。然后，该模型被用于分析在两种实际场景下7芯MCF中QKD传输的可行性，这两种场景分别为：（1）仅传输QKD信道；（2）同时传输QKD和经典信道。在第一种情况下，标准均匀MCF每芯的传输距离与传输参数（距离和净密钥率）兼容，非常接近单芯单模光纤的传输参数。对于第二种情况，必须采用非均匀MCF才能使该方案可行。
