Electrical power, changing with differential group delay (DGD) and detected from an optical communication link, 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。
It is important to know how does the degree of polarization (DOP) change with differential group delay (DGD) when DOP is feedback information for adaptive PMD compensation.
在用偏振度作为反馈信号的动态偏振模色散补偿系统中，偏振度与差分群延时的关系对于准确快速的动态偏振模色散补偿很重要。
The difficulty of solving PMD lies in its randomness of differential group delay (DGD) between the principal states of polarization (PSP) and the change.
PMD问题的最大困难在于差分群延迟(DGD)和偏振主态(PSP)变化的随机性。
A new magnetic field measurement based on the Faraday effect and the measurement of differential group delay (DGD) in fiber grating was proposed.
提出了一种利用光纤光栅中法拉第效应和测量差分群时延(DGD)的直接测量磁感应强度的新方法，给出了理论分析和实验结果。
The differential group delay (DGD) of the output light which passes through the E-O modulator PMD is estimated and verified by the experimental data.
藉由实验量测到的眼图，我们可以评估光载波经过电光调变器，所产生的群速色散与系统被极化色散现象影响的程度。
The differential group delay (DGD) of the output light which passes through the E-O modulator PMD is estimated and verified by the experimental data.
藉由实验量测到的眼图，我们可以评估光载波经过电光调变器，所产生的群速色散与系统被极化色散现象影响的程度。
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