E-band Telecom-Compatible 40 dB Gain High-Power Bismuth-doped Fiber Amplifier with Record Power Conversion Efficiency


Multi-band transmission is one of the key practical solutions to cope with the continuously growing demand on the capacity of optical communication networks without changing the huge existing fiber base. However, ultra-broadband communication requires the development of novel power efficient optical amplifiers operating beyond C- and L-bands, and this is a major research and technical challenge comparable to the introduction of the seminal erbium-doped fiber amplifiers that dramatically changed the optical communication sector. There are several types of optical fibers operating beyond C- and L-bands that can be used for the development of such amplifiers, specifically the fibers doped with neodymium, praseodymium, thulium, and bismuth. However, among these, Bi-doped fibers are of special interest as the most promising amplification medium because, unlike the others, different Bi-associated active centers allow amplification in an enormous band of overall width of 700 nm (1100–1800 nm). Such spectral coverage can be obtained by using different host materials, such as aluminosilicate, phosphosilicate, silica, and germanosilicate glasses. Here, we report a novel Bi-doped fiber amplifier with record characteristics for E-band amplification, including the highest power conversion efficiency among telecom-compatible E-band amplifiers reported to date. This bismuth-doped fiber amplifier (BDFA) features a maximum gain of 39.8 dB and a minimal noise figure of 4.6 dB enabled by 173 m Bi-doped fiber length. The maximum achieved power conversion efficiency of 38% is higher than that of L-band Er-doped fiber amplifiers. This performance demonstrates the high potential of BDFA for becoming the amplifier of choice in modern multi-band optical communication networks.

Publication DOI: https://doi.org/10.1063/5.0187069
Divisions: College of Engineering & Physical Sciences > Aston Institute of Photonics Technology (AIPT)
College of Engineering & Physical Sciences
Funding Information: This work was funded by European Union’s Horizon 2020 research and innovation programs under Marie Skłodowska-Curie Grant Agreement Nos. 814276 and 813144 and UK EPSRC Grant No. EP/R035342/1. The authors would like to thank Professor Wladek Forysiak for u
Additional Information: Copyright © 2024 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
Publication ISSN: 2378-0967
Data Access Statement: The data that support the findings of this study are available from the corresponding author upon reasonable request.
Last Modified: 15 May 2024 10:59
Date Deposited: 08 Apr 2024 16:30
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Related URLs: https://pubs.ai ... /046102/3280540 (Publisher URL)
http://www.scop ... tnerID=8YFLogxK (Scopus URL)
PURE Output Type: Article
Published Date: 2024-04-02
Published Online Date: 2024-04-02
Accepted Date: 2024-03-14
Authors: Donodin, Aleksandr (ORCID Profile 0000-0002-5715-1438)
Manuylovich, Egor (ORCID Profile 0000-0002-5722-0122)
Dvoyrin, Vladislav V.
Melkumov, Mikhail A.
Mashinsky, Valery M.
Turitsyn, Sergei K. (ORCID Profile 0000-0003-0101-3834)



Version: Published Version

License: Creative Commons Attribution

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