The fiber break or connector pull interrupts the path of the optical signals from the Raman optical pump source in the first repeater optical amplifier 102.
光纤中断或连接器满载中断了第一中继光放大器102中的拉曼光泵浦源产生的信号光的路径。
2
A loss of the remnant optical pump signal is then detected at the fourth repeater optical amplifier 108.
然后，在第四中继光放大器108处检测残余光泵浦信号的损耗。
3
A loss of remnant Raman pump is detected by the fourth amplifier 104 when the third repeater 106 reduces the power of its Raman pump.