长春理工大学姜会林团队取得一项新突破。他们的研究开发出了PDMS中的可重构SiC光栅：一种用于大气光通信网络的便携式方法。2025年12月2日出版的《光：科学与应用》杂志发表了这项成果。

为了解决这一挑战，该团队提出了一种新的基于可重构SiC光栅的点对多点FSOC方案，该方案通过飞秒激光诱导碳化物沉淀直接在可拉伸的PDMS薄膜中制造。可重构的SiC透射光栅具有良好的透明度(在1550Nm)，动态光束转向能力（百毫弧度级别），以及超轻设计（单光栅：0.4g）。SiC条纹是在PDMS薄膜的内部对称区域内特别制造的，以减轻应力调节时的结构畸变，显著提高了在退化大气信道中的远程传输能力。系统支持一维1对7动态光通信，二维1对9动态光通信。在最先进的225米户外实验中，该系统达到了可靠的10每个节点传输Gbps。这种便携式FSOC系统克服了传统系统的局限性，实现了可扩展和灵活的多波束转向。该方法为无人机和微卫星等空间微平台之间的远程、多节点和高容量FSOC网络奠定了技术基础。

据介绍，自由空间光通信（FSOC）能够实现高速、安全和可扩展的数据传输，在空间-地面网络中具有巨大的潜力。然而，现有的FSOC系统主要采用点对点发射机，每个发射机都需要体积庞大的波束转向装置和复杂的控制机制，这严重限制了它们在多节点微平台应用中的可行性。

附：英文原文

Title: Reconfigurable SiC gratings in PDMS: a portable approach for atmospheric optical communication networks

Author: Ma, Wanzhuo, Fu, Yanwei, Han, Dongdong, Dong, Keyan, Zeng, Jiaqing, Wang, Qiang, Lin, Peng, Zhang, Yonglai, Gu, Ye, Liu, Zhi, Liu, Xianzhu, Jiang, Huilin

Issue&Volume: 2025-12-02

Abstract: Free-space optical communication (FSOC) enables high-speed, secure, and scalable data transmission, with great potential for space–ground networks. However, existing FSOC systems predominantly employ point-to-point transmitters, each requiring bulky beam steering devices with complex control mechanisms, which severely limits their feasibility for multi-node micro-platform applications. Here, to address such a challenge, we propose a novel point-to-multipoint FSOC scheme based on reconfigurable SiC gratings, which are directly fabricated in stretchable PDMS films via femtosecond laser-induced carbide precipitation. The reconfigurable SiC transmission gratings are with good transparency (~91.9% at 1550nm), dynamic beam steering capability (hundred-milliradian level), and an ultralightweight design (single grating: 0.4g). The SiC fringes are specially fabricated within the internally symmetric region of the PDMS film to mitigate the structure distortion during stress regulation, significantly enhancing the long-range transmission capability in degraded atmospheric channels. The system supports 1-to-7 and 1-to-9 dynamic optical communication for 1D and 2D configurations, respectively. In a state-of-the-art 225-meter outdoor experiment, the system achieves reliable 10Gbps transmission for each node. This portable FSOC system overcomes the limitations of conventional systems, enabling scalable and flexible multibeam steering. This approach establishes a robust foundation for long-range, multinode, and high-capacity FSOC networks among spatial micro-platforms such as unmanned aerial vehicles and micro-satellites.

DOI: 10.1038/s41377-025-02060-0

Source: https://www.nature.com/articles/s41377-025-02060-0