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

Question

Options

• AImproper DCM configuration will degrade the receiving end performance.
• BThe DCM module is more likely to cause nonlinearity than the line transmission fiber, so the optical
• CFor 10G systems with line fiber lengths within 400 KM, DCM of G.652 can be used to compensate
• D655 (LEAF).
• EImproper DCM configuration will lead to degradation of the system signal-to-noise ratio.

• A
  12% (2)
• B
  6% (1)
• C
  76% (13)
• D
  6% (1)

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