21 July 2022 Simple ring-structured photonic crystal fiber with low nonlinear coefficients and flat dispersion supporting 166 OAM modes
Qiang Liu, Shengnan Tai, Yudan Sun, Mingzhu Han, Jianxin Wang, Chao Liu, Jingwei Lv, Shimiao Wang, Guangrong Sun, Paul K. Chu
Author Affiliations +
Abstract

A simple ring-structured photonic crystal fiber (PCF) is designed to support the stable propagation of multiple orbital angular momentum (OAM) modes. The PCF is numerically analyzed and optimized by the finite element method. The results show that the number of OAM modes supported by the PCF reaches 166 in the wavelength range of 1.4 to 1.7 μm. Meanwhile, the confinement loss of the OAM modes is lower than 10 − 8 dB / m, and the smallest dispersion variation is 12.7 ps / ( km · nm ) . Moreover, the mode quality of all of the eigenmodes is higher than 94.1%, and the nonlinear coefficient is lower than 0.7 w − 1 / km. The simple PCF structure with excellent properties has immense application prospects in high-capacity OAM communication.

© 2022 Society of Photo-Optical Instrumentation Engineers (SPIE)
Qiang Liu, Shengnan Tai, Yudan Sun, Mingzhu Han, Jianxin Wang, Chao Liu, Jingwei Lv, Shimiao Wang, Guangrong Sun, and Paul K. Chu "Simple ring-structured photonic crystal fiber with low nonlinear coefficients and flat dispersion supporting 166 OAM modes," Optical Engineering 61(7), 076108 (21 July 2022). https://doi.org/10.1117/1.OE.61.7.076108
Received: 15 March 2022; Accepted: 1 July 2022; Published: 21 July 2022
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Cited by 3 scholarly publications.
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KEYWORDS
Dispersion

Photonic crystal fibers

Optical fibers

Refractive index

Optical engineering

Cladding

Nonlinear optics

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