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In this paper, we investigate through simulation the feasibility of amplification solutions
for WDM ring PON encompassing C+L transmission bands. The system under analysis
is composed by a bidirectional pump at 1480 nm with 1 W of power in each direction
and 16 channels (8 C band + 8 L band). The simulation describes an 80 km WDM ring
with 8 nodes in which 2 channels are added/dropped. Two scenarios were
implemented, one with simple Raman amplification that considers that all the pump
power travels along the ring being selected the optimal order to drop channels and
another with C- band in line EDFA in the link mid length that performs and additional
amplification on C band signals. The results of both approaches are compared and their
suitability for practical PON is analyzed.
