A.Dispersion compensation requirements for hybrid transmission systems are consistent with those for non-coherent systems.

B.The optical power of coherent signals should be lower than that of incoherent signals to avoid nonlinear effects.

C.In principle, follow the commissioning requirements of non-coherent networks.

D.The nonlinear effect of coherent signals is stronger than that of non-coherent ones, so the single-wavelength optical power of coherent wavelengths entering the fiber cannot be higher than the nominal value of single-wavelength optical amplifiers.

A.Optical monitoring technology

B.Optical amplification technology

C.Multiplexing and demultiplexing technology

D.Wavelength conversion technology

A.ROADM technology realizes the deployment of wavelength up and down and pass-through status through the network management software to issue configurations

B.The wavelength adjustment of the ROADM site requires the operation and maintenance personnel to go to the site for support

C.NG WDM equipment supports ROADM with fixed spectrum and Flexible ROADM with flexible spectrum

D.ROADM can adjust the optical power balance of the pass-through and add-wavelength wavelengths