OPTICAL FIBRE, AND OPTICAL TRANSMISSION SYSTEM

摘要

This optical fibre is provided with a core part and a cladding part that is formed on the outer periphery of the core part and has a refractive index lower than the maximum refractive index of the core part. The core part is provided with an α-power refractive index distribution profile having an α value in the range of 3-10 inclusive. At least the diameter of the core part and the relative refractive index difference between the core part and the cladding part are set such that light can be propagated in at least 6 propagation modes with respect to the wavelength of inputted light. Thus, an optical fibre exhibiting low interference between modes, and an optical transmission system using said optical fibre are provided.