Wavelength multiplexed optical system with multimode optical fibres

摘要

An optical system comprises a multimode optical fibre (10) capable of transmitting wavelength multiplexed optical signals and a plurality of multimode modal dispersion compensation optical fibres (42). Each modal dispersion compensation fibre (42) is capable of transmitting one of the wavelengths of the multiplex and each compensation fibre (42) has an optimized index profile such that the modal dispersion for the transmitted wavelength is inversely equal to the modal dispersion induced in the transmission fibre (10) for said wavelength. The system of the invention allows an increased bitrate without reducing the bandwidth.