Journal
JOURNAL OF MODERN OPTICS
Volume 68, Issue 15, Pages 784-791Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/09500340.2021.1947533
Keywords
Orbital angular momentum; anti-resonance fibre; chromatic dispersion; confinement loss
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Funding
- Local Universities Reformation and Development Personnel Training Supporting Project from Central Authorities [140119001]
- City University of Hong Kong Strategic Research Grant (SRG) [7005505]
- Scientific Research Fund of Sichuan Province Science and Technology Department [2020YJ0137]
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The newly designed ring anti-resonance fibre can transmit orbital angular momentum (OAM) modes with stable transmission performance and high OAM purity, making it suitable for optical communication applications.
A novel ring anti-resonance fibre (ARF) is designed and demonstrated for the transmission of orbital angular momentum (OAM) modes. The fibre consists of two layers of negative curvature tubes arranged orderly inside and outside the ring region and OAM modes can be transmitted in the ring region. The properties of the fibre are investigated by the finite element method based on the COMSOL multiphysics software and a manufacturing method is proposed. The fibre shows stable transmission of 30 OAMs in the 1.5-1.6 mu m band, low and flat dispersion (5.98 ps/(km nm)), extremely small nonlinear coefficient (0.539 km(-1) W-1 at 1.55 mu m) and confinement loss (10(-9)-10(-11) dB/m), as well as high OAM purity (larger than 98.295%). Therefore, the structure has immense potential in optical communication.
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