High gain double-pass L-band EDFA with dispersion compensation as feedback loop

• Main Authors: Haleem M.R., Al-Mansoori M.H., Jamaludin M.Z., Abdullah F., Din N.M.
• Other Authors: 37018144900
• Format: Conference paper
• Published: 2023
• Subjects: Erbium; Fiber amplifiers; Fiber Bragg gratings; Noise figure; Pumps; Amplified signals; Amplified spontaneous emissions; Broadband mirrors; Chirped fiber Bragg grating; Double pass; Feed-back loop; Gain medium; High gain; Input signal power; L-band EDFA; Low noise figure; Pump power; Broadband amplifiers

We demonstrate an efficient double-pass L-band erbium-doped fiber amplifier (EDFA) incorporating chirped fiber Bragg grating (CFBG). The amplifier structure exploits the characteristics of CFBG to reflect the amplified signal back into the gain medium, filter out the recycled forward amplified spontaneous emission and block the residual 1480 nm pump power. The amplifier configuration has high gain and low noise figures as compared to double-pass EDFA using broadband mirror. The demonstrated amplifier has gain of more than 48 dB and low noise figure of less than 4 dB at low input signal power of -40 dBm. � Pleiades Publishing, Ltd., 2011.