In optical fiber networks, unrepeated links are cost effective solutions to provide connectivity
in challenging contexts that hinder the deployment of in-line amplifiers. Extending the optical …

We report a record real-time unrepeatered experiment with 64 single-carrier 400Gb/s
channels transmission over 320.5 km fibre, applying large-area ultra-low loss fibre with …

Semiconductor optical amplification complemented by backward-propagating Raman
pumps enables 100 nm ultra-wideband transmission which, when coupled with wavelength …

We report the results of 50G, 100G, 200G, 400G un-repeatered transmission aimed at
achieving the longest distance without any inline active elements, this system realizes …

This paper presents recent advances on high-capacity optical fiber communication for
coherent and non-coherent transmission systems. We describe works carried out at CPQD …

We demonstrates record single-carrier 50Gb/s, 100Gb/s, 200Gb/s and 400Gb/s
unrepeatered transmission over 670.64 km, 653.35 km, 601.93 km and 502.13 km …

By basing the figure of merit on the joint evaluation of signal bit error rate and optical signal-
to-noise ratio, the design of single-carrier 400 G unrepeatered optical systems using remote …

This paper demonstrates a record unrepeatered transmission of single-carrier 800Gb/s over
404.39 km (63.49 dB) with a single fiber configuration, using sub-carrier Frequency-Division …

In this paper, we evaluate the selective combination of algorithms for fiber nonlinearity
compensation, transceiver impairments mitigation and variable-rate coding in unrepeatered …

Ultra-wideband transmission systems are appealing to scale optical fiber capacity. Among
technologies under investigation, novel ultra-wideband SOA-based devices, exhibiting high …