M. Yamada et al., BROAD-BAND AND GAIN-FLATTENED ER3-DOPED TELLURITE FIBER AMPLIFIER CONSTRUCTED USING A GAIN EQUALIZER(), Electronics Letters, 34(4), 1998, pp. 370-371
The authors wave constructed a broadband and gain-flattened Er3+-doped
tellurite fibre amplifier by using a Mach-Zehnder type optical filter
as a gain equaliser. They obtained a 3dB down bandwidth of 68nm iu th
e 1536-1604nm wavelength region.