Patent ID: 8879920

Claim:
An optical system, comprising: a multimode transmission optical fiber that is capable of transmitting wavelength multiplexed optical signals at distinct multiplex wavelengths, the multimode transmission optical fiber inducing modal dispersion at at least some of the multiplex wavelengths; a wavelength multiplexer for introducing the wavelength multiplexed optical signals into the multimode transmission optical fiber, wherein the wavelength multiplexer retains the spatial distribution of the modes of the wavelength multiplexed optical signals; and a plurality of multimode modal dispersion compensation optical fibers, each multimode modal dispersion compensation optical fiber being capable of transmitting one of the multiplex wavelengths; wherein the plurality of multimode modal dispersion compensation optical fibers compensates modal dispersion induced by the multimode transmission optical fiber such that, at the multiplex wavelengths, the compensated modal dispersion is, on an absolute basis, less than 0.2 psec/m; wherein, at the multiplex wavelengths, the optical system ensures a bandwidth greater than or equal to 2000 MHz-km after propagation over 300 meters; wherein, at the multiplex wavelengths, the optical system ensures a bandwidth greater than or equal to 4700 MHz-km after propagation over 550 meters; and wherein the optical system ensures a bitrate greater than 10Gb/s.