Experimental Analysis of Nonlinear Impairments in Fibre Optic Transmission Systems up to 7.3 THz


An effective way of increasing the overall optical fibre capacity is by expanding the bandwidth used to transmit signals. In this paper, the impact of expanding the transmission bandwidth on the optical communication system is experimentally studied using the achievable rates as a performance metric. The trade-offs between the use of larger bandwidths and higher nonlinear interference (NLI) noise is experimentally and theoretically analysed. The growth of NLI noise is investigated for spectral bandwidths from 40 GHz up to 7.3 THz using 64-QAM and Nyquist pulse-shaping. Experimental results are shown to be in line with the predictions from the Gaussian- Noise model showing a logarithmic growth in NLI noise as the signal bandwidth is extended. A reduction of the information rate of only 10% was found between linear and non-linear transmission across several transmission bandwidths, all the way up to 7.3 THz. Finally, the power transfer between channels due to stimulated Raman scattering effect is analysed showing up to 2 dB power tilt at optimum power for the largest transmitted bandwidth of 7.3 THz.

Publication DOI: https://doi.org/10.1109/JLT.2017.2760138
Divisions: College of Engineering & Physical Sciences > Aston Institute of Photonics Technology (AIPT)
College of Engineering & Physical Sciences
Additional Information: Copyright: IEEE. This work is licensed under a Creative Commons Attribution 3.0 License. For more information, see http://creativecommons.org/licenses/by/3.0/. Funding: in part by Becas Chile, in part by UK EPSRC UNLOC Programme under Grant EP/J017582/1, in part by FP7 ITN Programme ICONE(608099), and in part by the Royal Academy of Engineering under the Research Fellowships scheme.
Uncontrolled Keywords: GN model, nonlinear effects, optical fibre, optical fibre communications
Publication ISSN: 0733-8724
Last Modified: 13 Jun 2024 07:13
Date Deposited: 08 Nov 2017 12:45
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Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
https://ieeexpl ... ocument/8060995 (Publisher URL)
PURE Output Type: Article
Published Date: 2017-10-05
Accepted Date: 2017-09-29
Authors: Saavedra Mondaca, Gabriel
Tan, Mingming (ORCID Profile 0000-0002-0822-8160)
Elson, Daniel J.
Galdino, Lidia
Semrau, Daniel
Iqbal, Md Asif (ORCID Profile 0000-0001-7267-5865)
Phillips, Ian D (ORCID Profile 0000-0002-2776-8939)
Harper, Paul (ORCID Profile 0000-0002-9495-9911)
MacSuibhne, Naoise
Ellis, Andrew D. (ORCID Profile 0000-0002-0417-0547)
Lavery, Domaniç
Thomsen, Benn C.
Killey, Robert I.
Bayvel, Polina



Version: Published Version

License: Creative Commons Attribution

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