Field demonstration of 1 Tb/s superchannel transmission supported by probabilistic shaped constellations

  • Buchali F.
  • Fabian Steiner
  • Georg Böcherer
  • Idler W.
  • Lach E.
  • Patrick Schulte
  • Ralf Peter Braun
  • Schmalen L.

We have introduced a low cost backbone network architecture for 1-Tb/s superchannel transmission. To meet huge reach requirements in case of link failure we applied improved sensitivity probabilistic shaped constellations in a flex transponder application. For all distances of working paths up to 1000 km we successfully demonstrated 1-Tb/s transmission with spectral efficiencies up to 6.7 Gb/s/Hz. For protection path at higest distances around 2000 km the rate has been adjusted down to 800 km, which is inline with the protection concept. This rate is limited due to spectral efficiency constraints given by the 400 GHz slicing concept, the transmission format itself is capable to go even 2000 km at terabit capacities.

Recent Publications

May 01, 2020

A Packaged 0.01-26-GHz Single-Chip SiGe Reflectometer for Two-Port Vector Network Analyzers

  • Chung H.
  • Ma Q.
  • Rebeiz G.
  • Sayginer M.

© 1963-2012 IEEE. This article presents a packaged SiGe BiCMOS reflectometer for 0.01-26-GHz two-port vector network analyzers (VNAs). The reflectometer chip is composed of a resistive bridge coupler and two wideband heterodyne receivers for coherent magnitude and phase detection. In addition, a high-linearity receiver channel is designed to accommodate 20 ...

August 01, 2019

Protecting photonic quantum states using topology

  • Blanco-Redondo A.

The use of topology to protect quantum information is well-known to the condensed-matter community and, indeed, topological quantum computing is a bursting field of research and one of the competing avenues to demonstrate that quantum computers can complete certain problems that classical computers cannot. In photonics, however, we are only ...

May 01, 2019

Digital networks at the nexus of productivity growth

  • Kamat S.
  • Prakash S.
  • Saniee I.
  • Weldon M.

This paper takes a fresh look at the debate over the relationship between digital technology and productivity. The argument of economic historian Robert J. Gordon is that digital technology will not lead to increases in productivity such as we saw in the last century, based on his analysis of the ...