Yang Yan, Geng Chao, Li Feng, Li Xinyang
Appl Opt. 2017 Mar 1;56(7):2020-2028. doi: 10.1364/AO.56.002020.
A multiaperture receiver with a phased array is an effective approach to overcome the effect of the random optical disturbance in coherent free-space laser communications, in which one of the key technologies is how to efficiently combine the multiple laser beams received by the phased array antenna. A combining module based on coherent polarization beam combining (CPBC), which can combine multiple laser beams to one laser beam with high combining efficiency and output a linearly polarized beam, is proposed in this paper. The principle of the combining module is introduced, the coherent polarization combining efficiency of CPBC is analyzed, and the performance of the combining module is evaluated. Moreover, the feasibility and the expansibility of the proposed combining module are validated in experiments of CPBC based on active phase-locking.
具有相控阵的多孔径接收器是克服相干自由空间激光通信中随机光学干扰影响的有效方法，其中关键技术之一是如何高效地合并相控阵天线接收到的多束激光束。本文提出了一种基于相干偏振光束合并（CPBC）的合并模块，该模块可以将多束激光束高效合并为一束激光束，并输出线偏振光束。介绍了合并模块的原理，分析了CPBC的相干偏振合并效率，并评估了合并模块的性能。此外，通过基于有源锁相的CPBC实验验证了所提出合并模块的可行性和可扩展性。
