'Institute of Electrical and Electronics Engineers (IEEE)'
Doi
Abstract
Distributed and concentrated reflections represent
the two main limitations in reflective-semiconductor optical amplifier (R-SOA)-based passive optical networks (PONs). In this
paper, we experimentally discuss how the use of chirped signals
in centralized light seeding bidirectional PON can increase the
resilience of the system against those two types of reflections. An
experimental comparison of the performance of a highly chirped
return to zero (RZ) modulation format and the nonreturn to zero
is given. Error-free operation is achieved down to 10 dB of signal
to crosstalk ratio in presence of distributed reflection, when the
upstream signal is highly chirped RZ signal. The same chirped
modulation leads to a tolerance of more than dB network
return loss due to concentrated reflections. Finally, we assess also
the system feasibility of a R-SOA-based full-duplex PON where
both the upstream and the downstream are modulated signals