Zhang Zilong, Wang Yuqi, Zhang Lianghaoyue, Yang Hongzhi, Zhao Suyi, Pan Xiangyang, He Wei, Ma Yunfei, Kong Lingyu, Xiao Lin, Zhao Changming
School of Optics and Photonics, Beijing Institute of Technology, Beijing, China.
Key Laboratory of Photoelectronic Imaging Technology and System, Ministry of Education of People's Republic of China, Beijing, China.
Nat Commun. 2025 Aug 22;16(1):7857. doi: 10.1038/s41467-025-63100-2.
Structured light brings a breakthrough in information capacity carried by the laser field, finding an ideal utility in optical information transmission. Advancements in optical intensity-based imaging have facilitated the use of structured light for simple information enconding and decoding. Here, we propose a method for extremely high-capacity information encoding, as well as image direct transmission, by modulating the structured light to defective states. Using well-designed two-dimensional binary hologram gratings to generate distinct defects within a single Hermite-Gaussian mode, we achieve over 10 (n > 10) of laser states for encoding, corresponding to information capacity being tens of bits. These defective states are recognized by image processing method for quick decoding. In addition, various image patterns can also be generated and are possible to achieve long-distance transmission with high fidelity. It means that images can be directly transmitted for long distance without digital encoding process, which paves a simple way for information transmission.
结构光在激光场携带的信息容量方面带来了突破，在光信息传输中找到了理想的用途。基于光强度成像的进展促进了结构光在简单信息编码和解码中的应用。在此，我们提出一种通过将结构光调制到缺陷状态来实现超高容量信息编码以及图像直接传输的方法。利用精心设计的二维二元全息光栅在单个厄米-高斯模式内产生不同的缺陷，我们实现了超过10种（n > 10）用于编码的激光状态，对应信息容量为数十位。这些缺陷状态通过图像处理方法进行识别以实现快速解码。此外，还可以生成各种图像图案，并有可能实现高保真的长距离传输。这意味着图像无需数字编码过程即可直接进行长距离传输，为信息传输铺平了一条简单的道路。
