在水下光电成像系统中，要对水下相机与地面设备进行视频数据与控制命令的远距离通信，而电缆的传输距离有限不能达到远距离通信的要求。针对此问题，设计了一个基于Camera Link 高速相机的水下光电成像传输系统，采用光纤传输技术实现了水下视频信号到地面设备的长线传输，以及地面设备对水下Camera Link高速相机的远距离控制，传输距离可达20 km，传输稳定可靠，现已成功应用到某水下成像系统中。

In the underwater photoelectric imaging system, long distance communication of video data and control signal between underwater camera and ground equipment are needed. However, due to the limitation of transmission distance, the cable transmission can’t meet the demand. To solve the problem, an underwater photoelectric imaging transmission system is presented in this paper. Using the fiber transmission technology, the system realizes the long wire video signal transmission between the underwater camera and ground equipment, and the long distance control signal from ground equipment to the underwater camera. Experimental results show that transmission distance can extend up to 20 km, and transmission is very stable. The system has been successfully applied in a certain underwater imaging system.