Gain equalization for few-mode erbium-doped fiber amplifiers via strong mode coupling
Gain equalization for few-mode erbium-doped fiber amplifiers via strong mode coupling
Few-mode erbium-doped fiber amplifiers (FM-EDFAs) are one of the most important optical subsystems for successful space division multiplexed transmission systems. In this paper, we propose a new FM-EDFA designed to achieve significantly reduced differential modal gain (DMG) via strong mode coupling. Using a new numerical model based on a fiber transfer matrix, the DMGs of FM-EDFAs are systematically investigated and two different types of six-mode fiber amplifiers are analyzed, as exemplar demonstrations. In a uniformly doped step-index fiber, the DMG can be reduced from 9.3 to 1.1 dB (i.e., 8.2 dB reduction) and further reduced to 0.5 dB in a dual-layer doping structure.
Erbium-doped fiber amplifiers, Few-mode fibers, Space division multiplexing, Strong mode coupling
Liu, Yaping
4ce2d804-c3ce-4ccd-9ee5-b53faa3e07d4
Yang, Zhiquan
42600e5d-bd33-4f71-9b90-5aa3326fb987
Wang, Xutao
a7201a7c-4fde-4dba-a4fb-0f89a9ea42df
Jung, Yongmin
6685e51e-be47-4c96-8c4b-65aee3b5126d
Zhang, Lin
dab74f45-fd58-4dd4-b984-034907d88322
13 January 2022
Liu, Yaping
4ce2d804-c3ce-4ccd-9ee5-b53faa3e07d4
Yang, Zhiquan
42600e5d-bd33-4f71-9b90-5aa3326fb987
Wang, Xutao
a7201a7c-4fde-4dba-a4fb-0f89a9ea42df
Jung, Yongmin
6685e51e-be47-4c96-8c4b-65aee3b5126d
Zhang, Lin
dab74f45-fd58-4dd4-b984-034907d88322
Liu, Yaping, Yang, Zhiquan, Wang, Xutao, Jung, Yongmin and Zhang, Lin
(2022)
Gain equalization for few-mode erbium-doped fiber amplifiers via strong mode coupling.
Applied Sciences, 12 (2), [767].
(doi:10.3390/app12020767).
Abstract
Few-mode erbium-doped fiber amplifiers (FM-EDFAs) are one of the most important optical subsystems for successful space division multiplexed transmission systems. In this paper, we propose a new FM-EDFA designed to achieve significantly reduced differential modal gain (DMG) via strong mode coupling. Using a new numerical model based on a fiber transfer matrix, the DMGs of FM-EDFAs are systematically investigated and two different types of six-mode fiber amplifiers are analyzed, as exemplar demonstrations. In a uniformly doped step-index fiber, the DMG can be reduced from 9.3 to 1.1 dB (i.e., 8.2 dB reduction) and further reduced to 0.5 dB in a dual-layer doping structure.
Text
applsci-1496540-revised
- Accepted Manuscript
Text
applsci-12-00767
- Version of Record
More information
Accepted/In Press date: 10 January 2022
Published date: 13 January 2022
Additional Information:
Funding Information:
Funding: National Key R&D Program of China under grant 2019YFB2203902 and National Natural Science Foundation of China under Grant 61775165.
Publisher Copyright:
© 2022 by the authors. Licensee MDPI, Basel, Switzerland.
Keywords:
Erbium-doped fiber amplifiers, Few-mode fibers, Space division multiplexing, Strong mode coupling
Identifiers
Local EPrints ID: 454795
URI: http://eprints.soton.ac.uk/id/eprint/454795
ISSN: 2076-3417
PURE UUID: c3fc9bc9-bf75-494d-adc7-439b1bfd6f58
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Date deposited: 23 Feb 2022 17:43
Last modified: 17 Mar 2024 03:15
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Contributors
Author:
Yaping Liu
Author:
Zhiquan Yang
Author:
Xutao Wang
Author:
Lin Zhang
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