Impact of pump-signal overlap in S+C+L band discrete Raman amplifiers


We experimentally investigate the impact of pump-signal overlap in ultra-wideband (>13THz) Raman amplifiers and measure the transmission penalty on 30GBaud PM-QPSK signals due to adjacent Raman pumps in a 15dB gain, 150nm (∼18.8THz) S+C+L-band discrete Raman amplifier. We present an efficient numerical model to predict the performance penalty induced by crosstalk from Rayleigh backscattered light from backward-propagating Raman pumps showing good agreement with the experimental results. A 4nm guard-band must be retained around an overlapping Raman pump based on typical, commercial semiconductor laser pump diodes to ensure a negligible transmission penalty in S-band

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Divisions: College of Engineering & Physical Sciences > Aston Institute of Photonics Technology (AIPT)
College of Engineering & Physical Sciences
Additional Information: Published by The Optical Society under the terms of the Creative Commons Attribution 4.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.
Uncontrolled Keywords: Atomic and Molecular Physics, and Optics
Publication ISSN: 1094-4087
Last Modified: 29 Jan 2024 08:27
Date Deposited: 31 Jul 2020 08:29
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Related URLs: https://www.osa ... =oe-28-12-18440 (Publisher URL)
http://www.scop ... tnerID=8YFLogxK (Scopus URL)
PURE Output Type: Article
Published Date: 2020-06-05
Accepted Date: 2020-04-12
Authors: Iqbal, Md Asif (ORCID Profile 0000-0001-7267-5865)
Di Rosa, Gabriele
Krzczanowicz, Lukasz (ORCID Profile 0000-0002-8705-9261)
Phillips, Ian (ORCID Profile 0000-0002-2776-8939)
Harper, Paul (ORCID Profile 0000-0002-9495-9911)
Richter, André
Forysiak, Wladek (ORCID Profile 0000-0001-5411-1193)



Version: Published Version

License: Creative Commons Attribution

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