Noise Figure Estimation of EDFA Based on Gradient Boosting Regression Approach for THz Applications

Optical communication systems operating in the THz region require monitoring and control of transmission quality for higher network performance. Erbium-doped fiber amplifiers (EDFA) are one of the most important elements of such systems and input power and wavelength depended gain and noise characteristics of EDFAs complicate the network control. In this work, noise figure (NF) parameter of an EDFA was estimated with gradient boosting regressor model. The training and test data for the model were collected experimentally. The predicted values and real values of NF were fitted well with a coefficient of determination value of 0.9742, mean absolute error of 0.3428, and the root mean square error of 0.4429.