Experimental demonstration of 480 Gbit/s coherent transmission using a nanosecond switching tuneable laser

Marcos Troncoso-Costas*, Gaurav Jain, Yiming Li, Mohammed Patel, Lakshmi Narayanan Venkatasubramani, Sean O’Duill, Frank Smyth, Andrew Ellis, Francisco Diaz-Otero, Colm Browning, Liam Barry

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Fast-switching tuneable lasers with a wide wavelength coverage and with noise and linewidth levels suitable for high-order modulation formats can facilitate the implementation of highly flexible and reconfigurable optical metro, access and inter/intra data center networks. In this work, we show the characterization of a tuneable laser capable of covering a wavelength range of 35 nm in the C-band with nanosecond switching time and low linewidth and use it to demonstrate 480 Gbit/s 16QAM transmission over 25 km of single-mode fiber for a wavelength range of 19 nm.
Original languageEnglish
Article number130164
JournalOptics Communications
Early online date24 Nov 2023
Publication statusPublished - 1 Mar 2024

Bibliographical note

© 2023 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).

Funding: This work was supported by Science Foundation Ireland (SFI) through research grants 18/EPSRC/3591, 13/RC/2077-P2, 12/RC/2276-P2 and by EPSRC-SFI: Energy Efficient M Communication using Combs (EEMC) under reference number EP/S016171/1. Pilot Photonics would like to thank SMART Photonics for the collaboration around the tuneable laser development. YL thanks the Director of AiPT for funding.


  • 16QAM
  • Coherent transmission
  • Nanosecond switching


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