Effects act on transmitted signal in a fully optical fiber WDM systems

This article is devoted to influences in optical fibers. The main impact on quality of transmission signals have nonlinear phenomena. Their formation it isn´t accidental. Very important position has transmission speed and cleanness of material. In this age exist many different approaches to produce optical fibers. Next pages describe an overview of nonlinear effects and simulations opto-electronics transmission systems. Technology of optical systems is evolved every single day. Very important piece of transmission systems are nonlinear effects such as stimulated Raman scattering and stimulated brillouin scattering. Those effects are significant in dense wavelength division multiplex (DWDM) and speeds higher than 10Gbit/s. All efforts are focused to create the most pure silica waveguide and devices on path with low loss.