In this Letter, we propose and demonstrate efficient adaptive optics correction of a distributed 19-element fiber laser array for both receiving and transmission for the first time, to our best knowledge. Active beam coupling from space into polarization-maintaining fibers and all-fiber active cophasing beam combining with multiple-level fiber couplers are performed. Phase distortions distributed throughout the optical path from the simulated target to the receiving port are eliminated, and nearly ideal coherent combining is achieved in the far-field. Comprehensive reception efficiency is raised up to 52 times with the whole equivalent aperture of 152 mm and the far-field power-in-the-bucket metric up to 8.27 times. The optimal array element parameters for a given whole array aperture and turbulence intensity are analyzed.

中文翻译：

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用于自由空间光通信的具有自适应分布式孔径阵列的光纤激光收发和波前像差缓解

在这封信中，我们建议并证明，根据我们所知，首次对接收和发送的分布式19元素光纤激光器阵列进行了有效的自适应光学校正。进行从空间到保偏光纤的有源光束耦合，以及与多级光纤耦合器组合的全光纤有源同相光束。消除了从模拟目标到接收端口的整个光路中分布的相位畸变，并且在远场实现了近乎理想的相干组合。整个等效光圈为152毫米，综合接收效率提高了52倍，远场桶内功率测量则提高了8.27倍。分析了给定整个阵列孔径和湍流强度的最佳阵列元件参数。