We propose high-fidelity analog ghost diffraction and transmission through scattering media in free space using a series of 2D randomly-distributed binary patterns. The proposed method utilizes ghost diffraction to enable high-fidelity free-space optical transmission through scattering media. Any type of ghosts, e.g., analog signal, can be encoded into a series of 2D randomly-distributed binary patterns to serve as information carriers. After the generated 2D randomly-distributed binary patterns are sequentially embedded into spatial light modulator and are illuminated to propagate through scattering media in free space, a single-pixel detector is used to collect light intensity at the receiving end and high-fidelity signals can be retrieved without any complex post-processing algorithm. The proposed method possesses high robustness for high-fidelity free-space optical transmission through scattering media, and different wavelengths and different propagation distances can be flexibly used for free-space optical transmission. The method could open up an avenue towards many applications, e.g., free-space optical data transmission and communication.

我们建议使用一系列 2D 随机分布的二进制模式在自由空间中通过散射介质进行高保真模拟鬼衍射和传输。所提出的方法利用鬼衍射来实现通过散射介质的高保真自由空间光传输。任何类型的重影，例如模拟信号，都可以编码成一系列二维随机分布的二进制模式，作为信息载体。将生成的二维随机分布的二进制图案依次嵌入空间光调制器，在自由空间中通过散射介质进行照明传播后，在接收端使用单像素探测器采集光强，得到高保真信号。无需任何复杂的后处理算法即可检索。该方法对通过散射介质的高保真自由空间光传输具有很高的鲁棒性，并且可以灵活地使用不同波长和不同传播距离的自由空间光传输。该方法可以为许多应用开辟一条途径，例如自由空间光数据传输和通信。