一种双端旋转的光通信系统

Optical communication system with double-end rotation

为使两旋转部件之间实现高速通信,设计了一种适用于双端旋转条件下的无线光通信系统。通过设计非球面准直镜,选用适当的二向分色片,使光信号沿旋转轴中心通过,可将某一旋转部件发射出的激光信号传递至另一旋转部件中的光探测模块。在2个旋转端之间的距离从10 mm变化到550 mm、相对转速从10 r/min变化到120 r/min的过程中,系统的最小接收功率依然能满足通信要求,误码率为0。

In order to realize high-speed communication between two rotating parts,a free space optical communication system suitable for double-end rotation is designed.By designing an aspheric collimator and selecting proper two-way color splitter,the optical signal can pass through the center of rotation axis,and the laser signal emitted from one rotating part can be transmitted to the light detection module in another rotating part.When the distance between the two rotating ends changes from 10 mm to 550 mm,and the relative speed changes from 10 r/min to 120 r/min,the minimum received power of the system can still meet the communication requirements,and the bit error rate is 0.