Characterization of fiber amplifiers Lecture-5

EDFA architecture Figure: EDFA architecture Characterization of DFA

Three level Energy System Figure: Three level energy system Characterization of DFA

Rate Equations for three level Energy System. Characterization of DFA

Modeling of EDFA…………. Characterization of DFA

Modeling of EDFA Characterization of DFA

Noise figure of EDFA Characterization of DFA

Figure: Gain and NF in dB as a function of pump power in mW using a 10 m long EDF at 1550 nm signal wavelength and injected signal power of -35 dBm. From the numerical simulation. Characterization of DFA

Figure: Population in the upper state (N2) and ground state (N1) as a function of position along a 21 m long EDF at 1550 nm using 14 mW of pump power and injected signal power of -35 dBm. From the numerical simulation. Characterization of DFA

Figure: Gain as a function of EDF length at 1550 nm signal wavelength using 14 mW of pump power and injected signal power of -35 dBm. Characterization of DFA

Figure: Gain and NF in dB as a function of pump power in mW using a 10 m (non- optimized) and 21 m (optimized) long EDF at 1550 nm signal wavelength and injected signal power of -35 dBm. Characterization of DFA

Figure: Gain and NF in dB as a function of signal power in dBm using a 21 m long EDF at 1550 nm signal wavelength and injected pump power of 14 mW. Characterization of DFA

Figure: Absorption and emission cross sections of Erbium near 1500 nm for the fiber mentioned in table -1. Characterization of DFA

Figure: Gain in dB as a function of signal wavelength for various pump powers and injected signal power of -35 dBm using a 21 m long EDF Characterization of DFA

Figure: Gain in dB as a function of pump power in mW and signal power in dBm using a 21 m long EDF at 1550 nm signal wavelength. Characterization of DFA

Figure: NF in dB as a function of pump power in mW and signal power in dBm using a 21 m long EDF at 1550 nm signal wavelength. Characterization of DFA