This thesis focuses on simulating and analysing the effects on signals transmitted through a fiber optic channel. It begins with an introduction to optical fiber technology and its role in communication systems. It goes deep in the working process of the optical transmitter, the optical receiver and the optical channel. After this initial and theoretical introduction, it analyses the practical steps to generate signals that will enter the optical channel. The generation of pulse signals is done in VHDL. These pulses are sent into a simulated optical channel, implemented in MATLAB. This optical channel replicates chromatic dispersion and polarization mode dispersion to model real-world effects through two different functions.