It is a great challenge to use visible and coherent light source to realize high-fidelity optical transmission in free space around the corner where blockade, reflection and scattering occur, and quality of the information retrieved at the receiving end is significantly affected. In this Letter, we propose a novel method to solve the problems encountered in data transmission in free space around the corner when visible and coherent light source is applied. The proposed method is highly robust to coherent light diffraction, multiple scattering effect and environmental noise, which can make it promising for practical applications. A number of optical experiments have been conducted to successfully transmit different types of signals (e.g., analog) in free space around the corner to achieve high fidelity. The proposed method could lead to a development in many relevant applications, e.g., optical transmission in free space, information propagation in free space, telecommunication, and optical security.

中文翻译：

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拐角处的高保真光传输

利用可见光和相干光源在拐角处的自由空间实现高保真光传输是一个很大的挑战，这些地方会发生遮挡、反射和散射，接收端检索到的信息质量受到显着影响。在这封信中，我们提出了一种新方法来解决应用可见光和相干光源时在拐角处的自由空间中数据传输遇到的问题。该方法对相干光衍射、多重散射效应和环境噪声具有很强的鲁棒性，使其在实际应用中很有前景。已经进行了许多光学实验以在拐角处的自由空间中成功传输不同类型的信号（例如，模拟信号）以实现高保真度。