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Published in 2021 at "Optik"
DOI: 10.1016/j.ijleo.2021.166285
Abstract: Abstract Different designed Modal Gain Equalized Few Mode-Erbium Doped Fiber Amplifier (FM-EDFA) systems are evaluated and compared in this paper. These systems include Two Mode (2M-EDFA), Four Mode (4 M-EDFA) and Six Mode (6 M-EDFA).…
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Keywords:
edfa systems;
differential modal;
modal gain;
mode edfa ... See more keywords
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Published in 2020 at "Applied optics"
DOI: 10.1364/ao.404719
Abstract: We propose a technique for reducing the differential modal gain (DMG) that occurs in a two-mode erbium-doped fiber (2M-EDF) by inscribing voids in the core center of a 2M-EDF with a femtosecond laser. We show…
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Keywords:
differential modal;
modal gain;
void inscribed;
two mode ... See more keywords
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Published in 2019 at "Optics express"
DOI: 10.1364/oe.27.038087
Abstract: We theoretically propose two orbital angular momentum (OAM) erbium-doped ring-core fiber (RCF) amplifiers capable of providing relatively uniform gain for 22 modes with 18 OAM ones over the C-band. Two schemes of doping profile are…
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Keywords:
doped fiber;
gain;
differential modal;
erbium doped ... See more keywords
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Published in 2022 at "Optics letters"
DOI: 10.1364/ol.478350
Abstract: We characterize the differential modal group delay (DMGD) arising in few-mode fibers (FMFs) based on the digital re-sampling technique, which is commonly used in current digital signal processing flow at the receiver-side. When the DMGD…
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Keywords:
modal group;
differential modal;
digital sampling;
group delay ... See more keywords