Electrical power, changing with differential group delay (DGD) and detected from an opticalcommunicationlink, can be used as feedback signals of compensating for PMD.
光纤通信线路检测到的电功率随差分群延迟变化，可以作为PMD补偿的反馈控制信号。
2
With the success in linear dispersion compensation technique in optical fiber communication, a new limitation with nonlinearity will be accumulated when the length of fiber link increases.
随着线性色散补偿技术的成熟，光纤通信的另一个限制因素——非线性，将随着光纤链路的加长而积累起来。
3
Error of laser beam pointing has severe influences on the received power and bit error rate in the link of inter-satellite opticalcommunication.