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Optimized few-mode EDFA of applicability for variable mode groups with an extended doping region and a PSO algorithm

Authors :
Xiheng Huang
Yan Zeng
Yihong Fang
Xinyi Zhang
Shan Wang
Ou Xu
Songnian Fu
Jianping Li
Yuwen Qin
Source :
Journal of the Optical Society of America B. 39:2618
Publication Year :
2022
Publisher :
Optica Publishing Group, 2022.

Abstract

We employ particle swarm optimization to present a cladding-pumped few-mode erbium-doped fiber amplifier (FM-EDFA) with an extended erbium-doped distribution over the core. By enlarging the radius of the doping region to improve the gain of high-order modes, the differential modal gain (DMG) can be minimized. The proposed FM-EDFA can provide average gain of 21.7 dB and DMG of less than 0.61 dB across the C-band (1530–1565 nm) for seven-mode groups. In addition, the value of the optimal doping radius has been investigated for different numbers of mode groups, which will gradually increase with the number of mode groups. Finally, simulation results indicate acceptable applicability for four- to six-mode groups even using the proposed design.

Details

ISSN :
15208540 and 07403224
Volume :
39
Database :
OpenAIRE
Journal :
Journal of the Optical Society of America B
Accession number :
edsair.doi...........7f99ea54dfd6fd335bc70b88040a2014