Multi-band ESCL transmission supported by bismuth-doped and Raman fiber amplification

Aleksandr Donodin, Elliot London, Bruno Correia, Emanuele Virgillito, Mingming Tan, Pratim Hazarika, Ian Phillips, Paul Harper, Sergei K. Turitsyn, Vittorio Curri, Wladek Forysiak

Research output: Contribution to journalArticlepeer-review


Ultra-wideband transmission utilizes bandwidths beyond the standard C-band to enable significant network capacity upgrades. Upgrading the standard C-band to a C+L-band transmission scenario is already feasible, and exploratory transmission is being performed in the S-, E-, and O-bands to investigate quality of transmission (QoT) impairments in these spectral regions. In this paper, experimental transmission through a SCL- and partial E-band spectral region is performed, with use of a hybrid amplifier that exploits discrete Raman amplification for the SCL-bands, and a bismuth-doped fiber amplifier (BDFA) for the E-band. Through this transmission bandwidth, we demonstrate that 36 Tbit/s transmission is possible, with 150 coherent channels over 70 km of standard, single-mode fiber. This result is compared to a wideband physical layer model that considers a realistic full spectral load transmission scenario, where the E-band is occupied by 74 channels, providing a total of 221 channels. This comparison demonstrates that, for both scenarios in this experiment, the greatest impairment is present within the S-band, and the addition of the E-band to a SCL-band scenario has a negligible impact upon the QoT within the C- and L-bands.
Original languageEnglish
Number of pages12
JournalJournal of Lightwave Technology
Early online date5 Dec 2023
Publication statusE-pub ahead of print - 5 Dec 2023

Bibliographical note

For the purpose of open access, the author has applied a Creative Commons Attribution (CC BY) licence to any Author Accepted Manuscript version arising


  • BDFA
  • Bismuth-doped fiber amplifier
  • DRA
  • Gain
  • Gaussian noise model
  • L-band
  • Optical fiber amplifiers
  • Optical fiber networks
  • Optical pumping
  • Raman amplifier
  • Stimulated emission
  • Wavelength division multiplexing
  • coherent transmission
  • multi-band transmission
  • optical communications
  • wideband model
  • wideband transmission


Dive into the research topics of 'Multi-band ESCL transmission supported by bismuth-doped and Raman fiber amplification'. Together they form a unique fingerprint.

Cite this