![](bg9.png)
when a high P
r
is considered, and for a low electrical
noise environment.
For systems not impaired by the dispersion, a BER
improvement (to values lower than 10
−3
) after SSBI
removal is obtained, for a P
r
of 18 dB and a skew of
1 ns, and for a laser linewidth up to 5 MHz. Also, a
BER lower than 10
−3
is achieved for a skew up to 15
ns and a laser linewidth of 1 MHz. It has been shown
that the dispersion rapidly degrades the received sig-
nal quality, exceeding a BER of 10
−3
for a MCF
length longer than approximately 180 m. The re-
sults indicate that, in absence of dispersion compensa-
tion, the proposed transmission scheme show poten-
tial to be employed in intra DC connections. Never-
theless, the higher potential of the proposed transmis-
sion technique is achieved for systems in which the
dispersion effect is compensated electronically at the
RX side. For systems with full dispersion compensa-
tions, the results show a significant performance im-
provement achieved by the SSBI mitigation approach
employed, showing great interest for high capacity
short-reach SDM networks.
ACKNOWLEDGEMENTS
This work was partially funded by FCT/MCTES
through national funds and when applica-
ble co-funded EU funds under the project
UIDB/EEA/50008/2020 and project Dig-
Core/UIDP/50008/2020.
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