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Characteristics of gain spectral variation of EDFs and its dependence on aluminum doping level and fiber mode design
are quantitatively studied. Based on experimental data and manufactured fibers with different aluminum levels, the
correlation between aluminum concentration and both absorption spectrum and gain flatness is revealed. Gain spectral
variation for over a million meters of EDFs manufactured in last several years is presented. The result shows that peak-to-
peak spectral shape variation for all these fibers are within 0.8% in a 36nm C-band window.
Baishi Wang,Gabe Pub,Rich Osnato, andBera Palsdottir
"Characterization of gain spectral variation of Erbium-doped fibers codoped with aluminum", Proc. SPIE 5280, Materials, Active Devices, and Optical Amplifiers, (12 May 2004); https://doi.org/10.1117/12.520728
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Baishi Wang, Gabe Pub, Rich Osnato, Bera Palsdottir, "Characterization of gain spectral variation of erbium-doped fibers codoped with aluminum," Proc. SPIE 5280, Materials, Active Devices, and Optical Amplifiers, (12 May 2004); https://doi.org/10.1117/12.520728