The compensation of the chromatic dispersion of the WDM system mainly adopts the DCM compensation method. The following statement about DCM dispersion compensation, which is wrong?

The compensation of the chromatic dispersion of the WDM system mainly adopts the DCM compensation method. The following statement about DCM dispersion compensation, which is wrong?
A . Improper DCM configuration will lead to degradation of system signal-to-noise ratio.
B . For 10G systems with line fiber length within 400km,
C . 652 DCI can be used to compensate
D . 655LEA
F . DCM module is more likely to cause nonlinearity than line transmission fiber, so it is necessary to strictly control the optical power of the fiber.
G . Improper DCM configuration will cause degradation of receiver performance.

View Answer

Answer: B