Modeling EDFA Gain: Approaches and Challenges

Abstract

With the rapid development of virtual/augmented reality and cloud services, the capacity demand for optical communication systems is ever-increasing. To further increase system capacity, current researches focus on efficient and reliable system management, in which the transmission performance should be accurately estimated. The wavelength-dependent gain effects of erbium-doped fiber amplifiers (EDFAs) have a great impact on transmission performance, and therefore a precise EDFA gain model is required. In this paper, we firstly summarize the underlying principles and structures of EDFA, and introduce the gain performance and challenges in modeling. Then, we review the EDFA gain modeling methods. We categorize these researches into analytical modeling methods and machine learning (ML)-based modeling methods, and discuss their feasibilities and performances. In addition, we discuss the remaining problems for applying the models in a system and the possible directions for future investigations.

Performance analysis of a hybrid optical amplifier based 480-Gbps DWDM-FSO system under the effect of different atmospheric conditions

“…Its flexibility and effectiveness make it an integral component in building reliable and high-capacity fiber-optic networks. The EDFA theoretical model is demonstrated in detail in Liu et al (2021) and the parameters are listed in Table 1. Following amplification from EDFA, the signals are subsequently fed into a forward pumped EYDFA.…”

Performance analysis of a hybrid optical amplifier based 480-Gbps DWDM-FSO system under the effect of different atmospheric conditions

“…Its exibility and effectiveness make it an integral component in building reliable and highcapacity ber-optic networks. The EDFA theoretical model is demonstrated in detail in [21] and the parameters are listed in Table 1. Following ampli cation from EDFA, the signals are subsequently fed into a forward pumped EYDFA.…”

Implementation and evaluation of two parallel computational models for the simulation of a long‐haul DWDM system limited by FWM

“…1 To be able to reach great distances, it is necessary to use several optical amplifiers such as the well-known EDFAs (Erbium Doped Fiber Amplifiers); in this way, several spans of amplification can be achieved. 2,38 A multi-span DWDM system is shown in Figure 1, where:…”

“…Therefore, a maximum number of 350 channels (0.1 nm channel spacing) can be obtained in the C‐band 1 . To be able to reach great distances, it is necessary to use several optical amplifiers such as the well‐known EDFAs (Erbium Doped Fiber Amplifiers); in this way, several spans of amplification can be achieved 2,38 . A multi‐span DWDM system is shown in Figure 1, where: $$$ {f}_i $$$: $$$ {i}^{th} $$$ frequency channel $$$ {L}_S $$$ space between amplifiers (span) $$$ {L}_T $$$ total length of the system $$$ N $$$ total number of channels $$$ M $$$ total number of span …”