Guangtongxin yanjiu (Oct 2023)
Design of Tunable Gain Erbium-Doped Fiber Amplifier based on Super C Band
Abstract
With the growth of network traffic, communication services have higher and higher requirements on the performance of Dense Wavelength Division Multiplexing (DWDM). In order to improve the transmission efficiency, the transmission spectrum gradually expands to the C+L band transmission, and Super C Band transmission emerges as the times require. In order to solve this problem, this paper proposes an Erbium-Doped Fiber Amplifier (EDFA) structure for Super C Band transmission. Based on the Giles model, the characteristics of the EDFA in Super C Band are analyzed. A multi-stage pumping mechanism is used to design an EDFA that amplify in the Super C Band range. The results show that the EDFA can achieve a flat gain of 26 dB and an output power of 16.7 dBm when the light is incident at -9.3 dBm. The noise figure is less than 5 dB, and the ripple is less than 0.1 dB. And according to the requirement, when the incident light is in the range of -15～-3.5 dBm, the adjustable gain of 7～26 dB can be achieved by adjusting the pump power and the value of Variable Optical Attenuator (VOA). The EDFA can be used in the area of 5G transmission, optical fiber communication between data centers, etc.
