Modeling Edfa Gain Approaches And Challenges

Erbium-doped fiber amplifier gain calculation

Abstract-Erbium-doped fiber amplifiers are modeled using the propagation and rate equations of a homogeneous, two-level laser me- dium. Numerical methods are used to analyze the effects of optical modes and erbium confinement on amplifier performance, and to cal- culate both the gain and ASE. There are two key parameters used to characterize an optical amplifier: (1) Gain, which defines the amount of amplification achieved by the amplifier in a particular configuration, and (2) noise figure, which provides information about the quality of that amplification. Various simulation of the gain characteristics are performed by varying. In this paper, we firstly summarize the underlying principles and structures of EDFA, and introduce the gain performance and challenges in modeling. Then, we review the EDFA gain modeling methods. EDFA have biggest disadvantage in having different gain for different wavelength.