We present gain and noise figure measurement results from an EDFA round-robin using the OSA methods. This round-robin was performed in the framework of COST 241. COST 241, "Characterization of Advanced Fibers for the new Photonic Networks", working group 3, study group 2, "Fibre Amplifier Engineering", is currently performing an EDFA round-robin among the participants of this group. After some initial evaluation of the inticacies of such a round-robin [1], we started to use an AMOCO 17 dBm optical amplifier for the round-robin. This device, besides being extremely sturdy, shows a rather peculiar wavelength characteristic and is therefore very well suited to evaluate the various measurement methods for gain and noise figure, as they are currently evaluated. In the present round-robin, we have restricted ourselves to the "optical" measurement methods.
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