High-capacity phase-sensitively amplified transmission in a field-deployed fiber cable.

Zhirong Chen, Xiaojie Guo, Yingyu Chen, Yongguang Xiao, Jingshun Pan, Zhengyong Liu, Chao Lu, Zhaohui Li

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Article in Communications engineering, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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8 authors.

Zhirong ChenSchool of Electronics and Information Technology & Guangdong Provincial Key Laboratory of Optoelectronic Information Processing Chips and Systems & Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-sen University, Guangzhou, China.ORCID http://orcid.org/0009-0005-1551-3110

Xiaojie GuoInternational Cooperation Joint Laboratory for Optoelectronic Hybrid Integrated Circuits, Jinan University, Guangzhou, China. xjguo@jnu.edu.cn.ORCID http://orcid.org/0000-0003-3511-6110

Yingyu ChenSchool of Electronics and Information Technology & Guangdong Provincial Key Laboratory of Optoelectronic Information Processing Chips and Systems & Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-sen University, Guangzhou, China.

Yongguang XiaoSchool of Electronics and Information Technology & Guangdong Provincial Key Laboratory of Optoelectronic Information Processing Chips and Systems & Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-sen University, Guangzhou, China.

Jingshun PanGuangdong Provincial Key Laboratory of Nanophotonic Functional Materials and Devices, South China Normal University, Guangzhou, China.

Zhengyong LiuSchool of Electronics and Information Technology & Guangdong Provincial Key Laboratory of Optoelectronic Information Processing Chips and Systems & Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-sen University, Guangzhou, China.ORCID http://orcid.org/0000-0002-0737-1782

Chao LuSchool of Electronics and Information Technology & Guangdong Provincial Key Laboratory of Optoelectronic Information Processing Chips and Systems & Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-sen University, Guangzhou, China.

Zhaohui LiSchool of Electronics and Information Technology & Guangdong Provincial Key Laboratory of Optoelectronic Information Processing Chips and Systems & Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-sen University, Guangzhou, China. lzhh88@mail.sysu.edu.cn.ORCID http://orcid.org/0000-0002-6145-7843

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Phase-sensitive amplifiers (PSAs) outperform conventional phase-insensitive amplifiers by enhancing signal-to-noise ratio (SNR) through distinct gains for deterministic signal and stochastic noise depending on their phase features. Yet despite this potential, the practical implementation of PSAs in deployed fiber transmission systems remains under-explored. Here we present the field trial of high-capacity phase-sensitively amplified transmission in a field-deployed optical fiber cable. Same-wavelength bi-directional transmission of wavelength-division-multiplexing signals is utilized to increase the capacity in one fiber core. A wideband PSA based on periodically poled lithium niobate waveguides is demonstrated as a pre-amplifier at the receiver, which both increases the signal power and improves the SNR by mitigating the interference crosstalk primarily caused by Rayleigh backscattering along the fiber. A net transmission capacity of 10.944 Tb·s

Identifiers

PMID40715442

DOI10.1038/s44172-025-00462-x

PMCPMC12297349

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LicenceCC BY-NC-ND

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.