Mode analysis of orbital angular momentum modes carrying multi-mode ring-core fibers

Jiajing Tu; Quanchao Lu; Zhuo Wang; Shecheng Gao; Weiping Liu; Changyuan Yu; Zhaohui Li; Chao Lu

doi:10.1016/j.optcom.2021.127314

Mode analysis of orbital angular momentum modes carrying multi-mode ring-core fibers

Jiajing Tu, Quanchao Lu, Zhuo Wang, Shecheng Gao, Weiping Liu, Changyuan Yu, Zhaohui Li, Chao Lu

The Hong Kong Polytechnic University

Research output: Journal article publication › Journal article › Academic research › peer-review

4 Citations (Scopus)

Abstract

We discuss the mode properties for orbital angular momentum (OAM) modes supporting multi-mode ring-core fiber (MM-RCF). For strongly-guiding MM-RCF, by introducing one more layer to the ring-core, a two-layer ring-core fiber (TL-RCF) is proposed. It is proven that this TL-RCF can increase the separation degree between the vector eigenmodes and meanwhile weaken the spin–orbit coupling. For mode-group supporting MM-RCF, the maximum mode number is limited by the thickness of ring-core and the cut-off of radial higher-order mode. We also present the tradeoff relationship between the mode group effective index difference and inter-eigenmode differential mode delay in one mode group. The discussion in this paper can give guidance for the design of MM-RCF.

Original language	English
Article number	Article number 127314
Journal	Optics Communications
Volume	499
DOIs	https://doi.org/10.1016/j.optcom.2021.127314
Publication status	Published - 15 Nov 2021

Keywords

Mode analysis
Orbital angular momentum
Ring-core fiber
Space division multiplexing

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Physical and Theoretical Chemistry
Electrical and Electronic Engineering

More information

10.1016/j.optcom.2021.127314

http://hdl.handle.net/10397/106867

Cite this

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title = "Mode analysis of orbital angular momentum modes carrying multi-mode ring-core fibers",

abstract = "We discuss the mode properties for orbital angular momentum (OAM) modes supporting multi-mode ring-core fiber (MM-RCF). For strongly-guiding MM-RCF, by introducing one more layer to the ring-core, a two-layer ring-core fiber (TL-RCF) is proposed. It is proven that this TL-RCF can increase the separation degree between the vector eigenmodes and meanwhile weaken the spin–orbit coupling. For mode-group supporting MM-RCF, the maximum mode number is limited by the thickness of ring-core and the cut-off of radial higher-order mode. We also present the tradeoff relationship between the mode group effective index difference and inter-eigenmode differential mode delay in one mode group. The discussion in this paper can give guidance for the design of MM-RCF.",

keywords = "Mode analysis, Orbital angular momentum, Ring-core fiber, Space division multiplexing",

author = "Jiajing Tu and Quanchao Lu and Zhuo Wang and Shecheng Gao and Weiping Liu and Changyuan Yu and Zhaohui Li and Chao Lu",

note = "Funding Information: This research was sponsored by National Key R&D Program of China2019YFA0706300 from Ministry of Science and Technology, China; National Natural Science Foundation of China (NSFC) (Grant No. U2001601, U1701661); Guangzhou basic and applied basic research foundation, China (Grant No. 202002030327). Funding Information: This research was sponsored by National Key R&D Program of China 2019YFA0706300 from Ministry of Science and Technology, China; National Natural Science Foundation of China (NSFC) (Grant No. U2001601 , U1701661 ); Guangzhou basic and applied basic research foundation, China (Grant No. 202002030327 ). Publisher Copyright: {\textcopyright} 2021 Elsevier B.V.",

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day = "15",

doi = "10.1016/j.optcom.2021.127314",

language = "English",

volume = "499",

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T1 - Mode analysis of orbital angular momentum modes carrying multi-mode ring-core fibers

AU - Tu, Jiajing

AU - Lu, Quanchao

AU - Wang, Zhuo

AU - Gao, Shecheng

AU - Liu, Weiping

AU - Yu, Changyuan

AU - Li, Zhaohui

AU - Lu, Chao

N1 - Funding Information: This research was sponsored by National Key R&D Program of China2019YFA0706300 from Ministry of Science and Technology, China; National Natural Science Foundation of China (NSFC) (Grant No. U2001601, U1701661); Guangzhou basic and applied basic research foundation, China (Grant No. 202002030327). Funding Information: This research was sponsored by National Key R&D Program of China 2019YFA0706300 from Ministry of Science and Technology, China; National Natural Science Foundation of China (NSFC) (Grant No. U2001601 , U1701661 ); Guangzhou basic and applied basic research foundation, China (Grant No. 202002030327 ). Publisher Copyright: © 2021 Elsevier B.V.

PY - 2021/11/15

Y1 - 2021/11/15

N2 - We discuss the mode properties for orbital angular momentum (OAM) modes supporting multi-mode ring-core fiber (MM-RCF). For strongly-guiding MM-RCF, by introducing one more layer to the ring-core, a two-layer ring-core fiber (TL-RCF) is proposed. It is proven that this TL-RCF can increase the separation degree between the vector eigenmodes and meanwhile weaken the spin–orbit coupling. For mode-group supporting MM-RCF, the maximum mode number is limited by the thickness of ring-core and the cut-off of radial higher-order mode. We also present the tradeoff relationship between the mode group effective index difference and inter-eigenmode differential mode delay in one mode group. The discussion in this paper can give guidance for the design of MM-RCF.

AB - We discuss the mode properties for orbital angular momentum (OAM) modes supporting multi-mode ring-core fiber (MM-RCF). For strongly-guiding MM-RCF, by introducing one more layer to the ring-core, a two-layer ring-core fiber (TL-RCF) is proposed. It is proven that this TL-RCF can increase the separation degree between the vector eigenmodes and meanwhile weaken the spin–orbit coupling. For mode-group supporting MM-RCF, the maximum mode number is limited by the thickness of ring-core and the cut-off of radial higher-order mode. We also present the tradeoff relationship between the mode group effective index difference and inter-eigenmode differential mode delay in one mode group. The discussion in this paper can give guidance for the design of MM-RCF.

KW - Mode analysis

KW - Orbital angular momentum

KW - Ring-core fiber

KW - Space division multiplexing

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DO - 10.1016/j.optcom.2021.127314

M3 - Journal article

AN - SCOPUS:85111303297

SN - 0030-4018

VL - 499

JO - Optics Communications

JF - Optics Communications

M1 - Article number 127314

ER -

Mode analysis of orbital angular momentum modes carrying multi-mode ring-core fibers

Abstract

Keywords

ASJC Scopus subject areas

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