Raman amplification optimization in short‐reach high data rate coherent transmission systems

Mingming Tan*, Md Asif Iqbal, Tu T. Nguyen, Paweł Rosa, Lukasz Krzczanowicz, Ian D. Phillips, Paul Harper, Wladek Forysiak

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

1 Downloads (Pure)


We compared the transmission performances of 600 Gbit/s PM‐64QAM WDM signals over 75.6 km of single‐mode fibre (SMF) using EDFA, discrete Raman, hybrid Raman/EDFA, and firstorder or second‐order (dual‐order) distributed Raman amplifiers. Our numerical simulations and experimental results showed that the simple first‐order distributed Raman scheme with backward pumping delivered the best transmission performance among all the schemes, notably better than the expected second‐order Raman scheme, which gave a flatter signal power variation along the fibre. Using the first‐order backward Raman pumping scheme demonstrated a better balance between the ASE noise and fibre nonlinearity and gave an optimal transmission performance over a relatively short distance of 75 km SMF.

Original languageEnglish
Article number6521
Issue number19
Publication statusPublished - 1 Oct 2021

Bibliographical note

Funding Information:
Funding: UK Engineering and Physical Sciences Research Council (EPSRC) Grant EP/S003436/1 (PHOS), EP/V000969/1 (ARGON), Polish Ministry of Science and Higher Education Grant 12300060, and National Natural Science Foundation of China Grant 61975027.

Publisher Copyright:
© 2021 by the authors. Licensee MDPI, Basel, Switzerland.


  • Optical fibre communication
  • Raman amplification


Dive into the research topics of 'Raman amplification optimization in short‐reach high data rate coherent transmission systems'. Together they form a unique fingerprint.

Cite this