In this paper, we report the performance evaluation of praseodymium doped fiber amplifier (PDFA) operating in 1.25–1.35 μm band of wavelengths based on theoretical simulation. The performance of the PDFA is evaluated by considering an optimized length of Pr doped fiber, concentration of Pr ions and pump power. Moreover, the impact of input signal wavelength on gain, amplified spontaneous emission (ASE) noise and noise figure (NF) of the amplifier is also investigated. A small signal peak gain of around 22.7 dB is achieved at 1.3 μm for Pr doped fiber having short length of 15.7 m at an optimized pump power of 300 mW. A minimum NF of 4 dB is observed at 1.284 μm.