1306-km 20x1248-Gb/s PM-64QAM Transmission over PSCF with Net SEDP 11,300 (b∙km)/s/Hz using 115 samp/symb DAC

1306-km 20x124.8-Gb/s PM-64QAM transmission over PSCF with net SEDP 11,300 (b ∙ km)/s/Hz using 1.15 samp/symb DAC.

We demonstrated the transmission of a Nyquist-WDM signal based on PM-64QAM modulation in an EDFA-only submarine configuration composed of 54.4 km-long fiber spans: 20 channels at 124.8-Gb/s were propagated over 1306 km of low-loss pure-silica-core fiber (PSCF). Thanks to an aggressive digital spectral shaping, we achieved a raw spectral efficiency (SE) of 10.4 b/s/Hz, corresponding to 8.67 b/s/...

Unrepeatered 256 Gb/s PM-16QAM transmission over up to 304 km with simple system configurations.

We study unrepeatered transmission of 40x256 Gb/s systems with polarization-multiplexed 16-quadrature amplitude modulation (PM-16QAM) channels using simple coherent optical system configurations. Three systems are investigated with either a homogeneous fiber span, or simple two-segment hybrid fiber designs. Each system relies primarily on ultra-low loss, very large effective area fiber, while m...

Twisted light transmission over 143 km.

Spatial modes of light can potentially carry a vast amount of information, making them promising candidates for both classical and quantum communication. However, the distribution of such modes over large distances remains difficult. Intermodal coupling complicates their use with common fibers, whereas free-space transmission is thought to be strongly influenced by atmospheric turbulence. Here,...

Raman-Assisted Transmission of 16×10 Gbit/s over 240 km using Post-Compensation only

Unrepeatered Nyquist PDM-16QAM Transmission over 364 km using Raman Amplification and Multi-Channel DBP

using Raman Amplification and Multi-Channel DBP Lidia Galdino,* Mingming Tan, Domaniç Lavery, Pawel Rosa, Robert Maher, Ian D. Phillips, Juan D. Ania Castañón, Paul Harper, Robert I. Killey, Benn C. Thomsen, Sergejs Makovejs, and Polina Bayvel 1 Optical Networks Group, University College London, London WC1E 7JE, UK 2 Aston Institute of Photonic Technologies, Aston University, Birmingham B4 7ET,...