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Sociedade Brasileira de Telecomunicações

EDFA Gain Variation Problem in Transparent Optical Networks


This work presents a study about the impact of Erbium-doped Fiber Amplifier (EDFA) gain variation problem may have on the performance of Dynamic Optical Networks. An analytical model to estimate the EDFA gain variation considering amplifier input power is proposed. Two Impairment Aware RWA algorithms are also proposed. Numerical simulations suggest that network performance can be improved with the elimination of amplifiers gain variations. Results also indicate that proposed analytical model satisfactorily captures the behavior of EDFA’s gain variation.

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