  This study presents the development of two graphical interfaces using
Matlab's graphical user interface tool, GUIDE, to model the steady-state and
dynamic responses of Erbium (Er$^{3+}$)-doped fiber amplifiers. The primary
focus is on their application for educational purposes, employing two distinct
models. The steady-state model aims to evaluate the influence of various
intrinsic parameters of Er$^{3+}$-doped fibers, such as length, overlap factor
between the dopant profile and the optical signal, dopant density, and excited
state average lifetime, along with the impact of optical signals on the
amplifiers' performance. On the other hand, the dynamic model interface
facilitates the examination of the channels add/drop impact in an optical
network. This dual-interface approach provides a comprehensive understanding of
the Erbium-doped fiber amplifiers, making them valuable tools for educational
exploration and analysis.
