A novel three-ring-core few-mode fiber with large effective area and low nonlinear coefficient

A novel three-ring-core few-mode fiber with large effective area and low nonlinear coefficient is proposed in this paper. The fiber characteristics based on the full-vector finite element method (FEM) with perfect matched layer boundary conditions show that four supermodes with large effective area,...

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Bibliographic Details
Published in:Optoelectronics letters 2018, Vol.14 (1), p.30-35
Main Authors: Yu, Ru-yuan, Zheng, Hong-jun, Li, Xin, Bai, Cheng-lin, Hu, Wei-sheng
Format: Article
Language:English
Subjects:
Boundary layer
Coefficients
Finite element method
Group delay
Lasers
Optical Devices
Optics
Photonics
Physics
Physics and Astronomy
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Summary:A novel three-ring-core few-mode fiber with large effective area and low nonlinear coefficient is proposed in this paper. The fiber characteristics based on the full-vector finite element method (FEM) with perfect matched layer boundary conditions show that four supermodes with large effective area, low nonlinear coefficient and low differential mode group delay ( DMGD ) are achieved. With the increase of input wavelength, the effective areas of three-ring-core few-mode fiber are increased, and the nonlinear coefficients are decreased. The bending losses are increased with the increase of input wavelength, and are decreased with the increase of bending radius. Moreover, the proposed fiber performs a nonlinear coefficient and DMGD flattened profile at a large wavelength range.
ISSN:1673-1905
1993-5013
DOI:10.1007/s11801-018-7200-4