@article{herbster_romero_2017,  title={EDFA Design and Analysis for WDM Optical Systems Based on Modal Multiplexing},  volume={16},  ISSN={2179-1074},  url={https://doi.org/10.1590/2179-10742017v16i1882},  DOI={10.1590/2179-10742017v16i1882},  number={1},  journal={Journal of Microwaves, Optoelectronics and Electromagnetic Applications},  publisher={Sociedade Brasileira de Microondas e Optoeletrônica e Sociedade Brasileira de Eletromagnetismo},  author={Herbster, Adolfo Fernandes and Romero, Murilo Araújo},  year={2017},  month={Jan},  pages={194–207} }