3-mode Real-time MDM Transmission Using Single-mode OTN Transceivers over 300 km Weakly-coupled FMF

Zuo, Mingqing; Ge, Dawei; Gao, Yuyang; Cui, Jian; Huang, Shuailuo; Zhou, Rui; Guo, Qiang; Zhang, Yin; Zhang, Ding; Xiao, Xinhua; Shen, Lei; Wang, Dong; Li, Yunbo; Han, Li; Zhang, Lei; Lan, Xiaobo; Zhang, De-Chao; Li, Han; He, Yongqi; Chen, Zhangyuan; Li, Juhao

doi:10.1364/ofc.2022.m4b.4

Cited by 9 publications

(1 citation statement)

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“…During the past decade, researchers have fabricated a variety of ring-core fibers. The mole fraction of the GeO 2 in the fiber changes from 5% to almost 30% [ 30 , 42 , 43 , 44 ]. Highly Ge-doped fiber core with GeO 2 content up to 98 mol% has also been manufactured in practice [ 45 ].…”

Section: Concept and Fiber Structurementioning

confidence: 99%

Parabolic-Index Ring-Core Fiber Supporting High-Purity Orbital Angular Momentum Modes

Liu

Wang

Geng

et al. 2023

Sensors

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We design a graded-index ring-core fiber with a GeO2-doped silica ring core and SiO2 cladding. This fiber structure can inhibit the effect of spin-orbit coupling to mitigate the power transfer among different modes and eventually enhance the orbital angular momentum (OAM) mode purity. By changing the high-index ring core from the step-index to parabolic graded-index profile, the purity of the OAM1,1 mode can be improved from 86.48% to 94.43%, up by 7.95%. The proposed fiber features a flexible structure, which can meet different requirements for mode order, effective mode area, etc. Simulation results illustrate that the parabolic-index ring-core fiber is promising in enhancing the OAM mode purity, which could potentially reduce the channel crosstalk in mode-division-multiplexed optical communication systems.

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