Key settings include:

If you see a closed eye or high BER (>1e-5), increase the laser power (Laser > Power = 2 dBm) or adjust the fiber length to 1 km to reduce dispersion.

OptiSystem is a deep software—you can model PAM4, Free Space Optics, XG-PON, and even machine learning equalizers. However, the fundamental workflow remains identical to what you learned here:

: Your first step in a new project is defining global parameters, such as Bit rate (e.g., 10 Gbps) and Sequence length , which automatically determines the simulation Time window . 2. Designing Your First Optical Link

When you launch the software, you are presented with a graphical user interface (GUI) where you can manage your designs.

OptiSystem uses binary and multilevel signal representations. For most tutorials, you will start with the "Default" layouts found under File > New Project .