High-capacity optical communication relayed by multi-core amplifier on deployed submarine seven-core fiber cable

over a 140 km 7-core fiber cable link by employing the matched C + L Band cladding-pumped 7-core MC-EDFA. The measurements indicate slight variation in attenuation and crosstalk compared to the pre-cabling conditions, confirming the MCF's robustness to deployment and submarine disturbances. Furthermore, the developed 7-core MC-EDFAs maintain gains above ~18 dB and ~21 dB over the full C and L Bands, respectively, at an input power of -5 dBm, effectively compensating for span losses of submarine fiber cable. This successful field demonstration marks a crucial step towards the commercial implementation of integrated MC-EDFA SDM submarine optical communication systems for practical high-capacity applications.

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Publication Details

Journal
Communications Engineering
Published
2026-04-11
DOI
https://doi.org/10.1038/s44172-026-00664-x
Primary Topic
Optical Network Technologies
Type
article
Field-Weighted Citation Impact
0.00

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article

High-capacity optical communication relayed by multi-core amplifier on deployed submarine seven-core fiber cable

Yongguang Xiao, Guangquan Wang, Hanyu Gao, Yaolin Wu et al.
Communications Engineering
Optical Network Technologies
article

High-capacity optical communication relayed by multi-core amplifier on deployed submarine seven-core fiber cable

Yongguang Xiao, Guangquan Wang, Hanyu Gao, Yaolin Wu, Zhengyong Liu, Yuelin Yan, Yingyu Chen, Jiajing Tu, Runzhou Qiu, Zhaohui Li, X. C. Xie, Ying Yu, Jinkai Zhou, Jinpei Li, Wenhao Li, Shecheng Gao, Lei Shen, Chao Lu, Ruqi Chen, Bofan Guo, Cheng Du
article en

Abstract

over a 140 km 7-core fiber cable link by employing the matched C + L Band cladding-pumped 7-core MC-EDFA. The measurements indicate slight variation in attenuation and crosstalk compared to the pre-cabling conditions, confirming the MCF's robustness to deployment and submarine disturbances. Furthermore, the developed 7-core MC-EDFAs maintain gains above ~18 dB and ~21 dB over the full C and L Bands, respectively, at an input power of -5 dBm, effectively compensating for span losses of submarine fiber cable. This successful field demonstration marks a crucial step towards the commercial implementation of integrated MC-EDFA SDM submarine optical communication systems for practical high-capacity applications.

Communications Engineering
Hong Kong Polytechnic University (HK), Sun Yat-sen University (CN), Jinan University (CN), China Mobile (China) (CN), Yangtze Optical Electronic (China) (CN), Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou) (CN), Vi Technology (United States) (US), Fiberhome Technology Group (China) (CN), China United Network Communications Group (China) (CN)
National Key Research and Development Program of China
Affordable and clean energy
Openalex Percentile: Top 25%
Optical Network Technologies
DOIOpen Access PDFOpenAlex
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