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Low-noise-figure and high-purity 10 vortex modes amplifier based on configurable pump modes
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Wu, Yan, Wen, Jianxiang, Zhang, Mengdi, Wen, Jing, Chen, Wei, Zhang, Xiaobei, Pang, Fufei, Tang, Fengzai, West, Geoffrey D. and Wang, Tingyun (2022) Low-noise-figure and high-purity 10 vortex modes amplifier based on configurable pump modes. Optics Express, 30 (5). 8248. doi:10.1364/OE.452410
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WRAP-low-noise-figure-high-purity-10-vortex-modes-amplifier-based-configurable-pump-modes-2022.pdf - Published Version - Requires a PDF viewer. Download (3822Kb) | Preview |
Official URL: http://dx.doi.org/10.1364/OE.452410
Abstract
We have explored an orbital angular momentum (OAM) amplifier of 10 vortex modes under different-order OAM pump modes, i.e. OAM0, OAM1, and OAM2. The all-fiber amplification system consists of an active few-mode erbium-doped fiber (FM-EDF), a mode selective pump (MSP), and a mode selective signal (MSS). These mode selective components are based on fused-taper mode selective couplers (MSC) under different wavelengths fabricated by a passive ring-core fiber (RCF). Under different-order mode pumps, the OAM amplifier experimentally exhibits mode gains (MGs) above 15 dB for 10 vortex modes with the mode purities only 89%, essentially in line with the simulation results. Especially when the signal-mode profiles are better matched to the pump-mode profiles, i.e. the OAM pumps with the same order as signals, the obtained MGs are all over 20.2 dB and the amplified OAM mode purity is up to 97%; the acquired noise figures (NFs) are <4.9 dB and even the minimum NF is 3.2 dB. The results reveal that the OAM amplifier shows low-NF and high-purity characteristics under configurable pump modes in C-band. The amplified high-order OAM mode could be promising for uses in the long-distance mode division multiplexing (MDM) and in mitigation of the upcoming capacity crunch in optical fiber communication.
| Item Type: | Journal Article | |||||||||||||||||||||
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| Subjects: | Q Science > QC Physics T Technology > TK Electrical engineering. Electronics Nuclear engineering |
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| Divisions: | Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group) | |||||||||||||||||||||
| Library of Congress Subject Headings (LCSH): | Optical amplifiers, Optical fiber communication -- Research, Angular momentum | |||||||||||||||||||||
| Journal or Publication Title: | Optics Express | |||||||||||||||||||||
| Publisher: | Optical Society of America | |||||||||||||||||||||
| ISSN: | 1094-4087 | |||||||||||||||||||||
| Official Date: | 28 February 2022 | |||||||||||||||||||||
| Dates: |
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| Volume: | 30 | |||||||||||||||||||||
| Number: | 5 | |||||||||||||||||||||
| Article Number: | 8248 | |||||||||||||||||||||
| DOI: | 10.1364/OE.452410 | |||||||||||||||||||||
| Status: | Peer Reviewed | |||||||||||||||||||||
| Publication Status: | Published | |||||||||||||||||||||
| Reuse Statement (publisher, data, author rights): | © 2022 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement | |||||||||||||||||||||
| Access rights to Published version: | Open Access | |||||||||||||||||||||
| RIOXX Funder/Project Grant: |
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