首页> 外文会议>Conference on High-Resolution Wavefront Control: Methods, Devices, and Applications IV, Jul 8-9, 2002, Seattle, Washington, USA >Adaptive compensation of atmospheric effects with a high-resolution micro-machined deformable mirror
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Adaptive compensation of atmospheric effects with a high-resolution micro-machined deformable mirror

机译:高分辨率微加工变形镜对大气影响的自适应补偿

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We present experimental results for the adaptive compensation of atmospheric turbulence effects on a free-space laser communication links at near horizontal propagation paths over 2.5 km and 5 km lengths. A high-resolution micro-machined piston type mirror array (12x12 elements) and a fast beam steering mirror were used in an adaptive optics laser communication system based on the model-free stochastic parallel gradient descent (SPGD) optimization wavefront control technique. Control of the mirror was performed by a VLSI SPGD micro-controller. The experimental results demonstrate the improvement of the receiver performance (fiber coupling efficiency) on a summer day with a refractive index structure constant in the order of C_n~2 ≈10~(-14)m ~(-2/3).
机译:我们提出的实验结果用于在2.5 km和5 km长的近水平传播路径上的自由空间激光通信链路上的大气湍流效应的自适应补偿。基于无模型随机平行梯度下降(SPGD)优化波前控制技术,在自适应光学激光通信系统中使用了高分辨率的微加工活塞式反射镜阵列(12x12元件)和快速光束转向镜。通过VLSI SPGD微控制器执行镜的控制。实验结果表明,在夏季,折射率结构常数约为C_n〜2≈10〜(-14)m〜(-2/3)时,接收器性能(光纤耦合效率)得到改善。

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