论文标题
空间光学模式反复用作最佳横向距离估计的实用工具
Spatial optical mode demultiplexing as a practical tool for optimal transverse distance estimation
论文作者
论文摘要
我们介绍了同时的空间多模材料作为距离测量工具的实验实现。我们首先在存在泊松噪声的情况下显示了Fisher信息的简单而直观的推导。然后，我们在横向平面的两个方向上估计两个不连贯的光束之间的距离，并在正确的校准层面上，找到与理论预测的完美符合度。我们发现，即使灵敏度受到通道之间的串扰限制，我们也可以在2个维度上进行测量，超出雷利极限，并具有较大的动态。
We present the experimental implementation of simultaneous spatial multimode demultiplexing as a distance measurement tool. We first show a simple and intuitive derivation of the Fisher information in the presence of Poissonian noise. We then estimate the distance between two incoherent beams in both directions of the transverse plane, and find a perfect accordance with theoretical prediction, given a proper calibration of the demultiplexer. We find that, even though sensitivity is limited by the cross-talks between channels, we can perform measurements in 2 dimensions much beyond Rayleigh limit with a large dynamic.
