Principles for commissioning the optical power of a network carrying both coherent and non-coherent wavelengths

Principally, a coherent network can be commissioned in the same way as a non-coherent network, without considering fiber access scenarios. In a scenario in which 100G coherent wavelengths need to be added on a non-coherent network for capacity expansion, the incident optical power can be reduced to increase the OSNR tolerance of the 100G wavelengths and the transmission distance without electrical regeneration. In this situation, the optical power of single non-coherent wavelengths will be definitely reduced. When this occurs, commission the network according to the network design.

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