针对高速旋转设备分布式测量需求, 设计了一种单通道光纤旋转连接器(FROJ), 并进行了性能测试。以此单通道FROJ为基础, 采用磁光开关通过时分复用方式设计了四通道FROJ, 在静态和动态条件下分别测试了其插入损耗。实验结果表明: 该四通道FROJ的插入损耗小于4.5 dB,旋转变化量小于2 dB, 在转速不超过600 r/min时可以实现光信号的可靠传输。

Aim at the distributed measurement requirements of high-speed rotating equipment, a single-channel fiber optic rotary joint(FROJ) is designed and its performance is tested. Based on single-channel FROJ, four-channel FROJ is designed by magneto-optical switch, and its insertion loss is tested under static and dynamic conditions. The experimental results show that the insertion loss of the four-channel FROJ is less than 4.5 dB, the rotation variation is less than 2 dB, and the reliable optical signal transmission can be realized when the speed does not exceed 600 r/min.