Multi-band Transmission over E-, S-, C- and L-band with a Hybrid Raman Amplifier

Pratim Hazarika, Henrique Buglia, Mindaugas Jarmolovičius, Eric Sillekens, Mingming Tan, Aleksandr Donodin, Ian Phillips, Paul Harper, Robert I. Killey, Polina Bayvel, Wladek Forysiak

Research output: Contribution to journalArticlepeer-review


Capacity enhancement by utilising the unused spectral bands of the low-loss optical window of standard single-mode fibre (SSMF) is a cost-effective solution for meeting the future demand of data traffic. The development of optical amplifiers that can operate in different spectral bands is expected to play an integral part in the establishment of multi-band networks. In this work, we perform experimental, analytical and numerical modelling of a multi-band transmission system using a hybrid distributed-discrete Raman amplifier enabling signal amplification from 1410-1605 nm. The developed amplifier was tested over 50km of SSMF using 200 Gbit/s channels, where successful transmission was achieved, well above the HD-FEC threshold of 8.5 dB. Further study on the multi-band transmission performance was carried out using a semi-analytical closed-form approximation and split-step Fourier method-based simulations for various related test cases. The analytical and numerical models are also compared with experimental results, showing reasonable agreement in terms of system performance estimation.
Original languageEnglish
Pages (from-to)1-10
Number of pages10
JournalJournal of Lightwave Technology
Early online date31 Oct 2023
Publication statusE-pub ahead of print - 31 Oct 2023

Bibliographical note

This work is licensed under a Creative Commons Attribution 4.0 License. For more information, see


  • Analytical models
  • Bandwidth
  • Gaussian noise model
  • L-band
  • Multi-band transmission
  • Optical amplifiers
  • Optical fiber amplifiers
  • Optical fibers
  • Raman amplifier
  • Stimulated emission
  • optical amplifier
  • ultra-wideband transmission


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