This paper presents a novel optical amplifier based on an erbium-doped fiber operating in the 1-54 μm wavelength range. The amplifier, consisting of a 3 m-long Er${}^{3+}$-doped fiber, achieves high gain of up to 28 dB with a spectral bandwidth exceeding 300 GHz. It operates at a bit rate of 140 Mbit/s, demonstrating a sensitivity of -42 dBm. The amplifier is optically pumped using a CW DCM-dye laser and a GaInAsP DCPBH laser, with temperature tuning capabilities. Experimental setup includes a single-mode fiber coupler, index-matched splices, and a dichroic beam-splitter for signal detection. The amplifier's gain is influenced by pump power, with a threshold power of about 10 mW and a maximum gain of 28 dB at 20 mW absorbed. The amplifier's power transfer characteristic shows a 3 dB compression at an output power of +7 dBm. The spectral dependence of the gain is similar to the fluorescence spectrum, suggesting gains over 10 dB in a 4 THz bandwidth. Noise measurements indicate a sensitivity of -42 dBm at 140 Mbit/s, with potential for -62 dBm using shot noise techniques. The amplifier's performance is suitable for high-bandwidth multichannel optical communication systems, making it a promising technology for long-distance and local networks.This paper presents a novel optical amplifier based on an erbium-doped fiber operating in the 1-54 μm wavelength range. The amplifier, consisting of a 3 m-long Er${}^{3+}$-doped fiber, achieves high gain of up to 28 dB with a spectral bandwidth exceeding 300 GHz. It operates at a bit rate of 140 Mbit/s, demonstrating a sensitivity of -42 dBm. The amplifier is optically pumped using a CW DCM-dye laser and a GaInAsP DCPBH laser, with temperature tuning capabilities. Experimental setup includes a single-mode fiber coupler, index-matched splices, and a dichroic beam-splitter for signal detection. The amplifier's gain is influenced by pump power, with a threshold power of about 10 mW and a maximum gain of 28 dB at 20 mW absorbed. The amplifier's power transfer characteristic shows a 3 dB compression at an output power of +7 dBm. The spectral dependence of the gain is similar to the fluorescence spectrum, suggesting gains over 10 dB in a 4 THz bandwidth. Noise measurements indicate a sensitivity of -42 dBm at 140 Mbit/s, with potential for -62 dBm using shot noise techniques. The amplifier's performance is suitable for high-bandwidth multichannel optical communication systems, making it a promising technology for long-distance and local networks.