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SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC)

Distributed gain and spectral gain-saturation effects in erbium doped fibers

Waldemar Roberto Ruziscka, A.O. Dal Forno, R. Passy, M.R.X. de Barros, Jean Pierre von der Weid

Published Jan 22, 2003• 0 citations
Publisher

Abstract

Distributed gain and spectral gain-saturation effects of erbium-doped fiber amplifier (EDFA) were measured using a coherent reflectrometry technique. We find that the spectral performance can be improved if the gain needs are relaxed. A hole in the spectral dependence of the gain depletion was also observed, which could be related to the Spectral Hole Burning (SHB) phenomenon.

DOI
10.1109/imoc.1999.867112

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Distributed gain and spectral gain-saturation effects of erbium-doped fiber amplifier (EDFA) were measured using a coherent reflectrometry technique. We find that the spectral performance can be improved if the gain needs are relaxed. A hole in the spectral dependence of the gain depletion was also observed, which could be related to the Spectral Hole Burning (SHB) phenomenon.
Gain-difference spectra are used to show that 980-nm band pump wavelength changes can significantly effect spectral-hole burning (SHB) in erbium-doped fiber amplifiers (EDFAs). Gain measurements made using a number of different signal and pump wavelengths help to characterize the underlying inhomogeneous spectral properties of EDFAs and a framework for modeling these effects is presented. Despite the difficulty of obtaining the needed subpopulation specific cross section spectra, this model can be used to explain seemingly anomalous changes in the gain spectra of EDFA as a result of changes in signal or pump wavelength.