Light Scattering Mechanisms in Few-Mode Fibers

In this study, the contributions of light scattering and extra-loss mechanisms to total losses differential mode attenuation guided modes are quantified for three different few-mode fibers. The tested fibers have same modal content but refractive index profiles, namely step, trapezoidal parabolic. It is demonstrated that a profile good compromise between low attenuation, while maintaining large effective differences so as reduce coupling.