Patent ID: 9002211
Filing Date: 2015-04-07
Classification: H04B

Abstract:
1. A communication system comprising: a transmission path through which an optical signal is propagated; and dispersion slope imparting sections provided on a transmitting side and a receiving side of the transmission path, the dispersion slope imparting sections imparting different dispersion and dispersion slope characteristics in accordance with a wavelength of the optical signal such that the dispersion and dispersion slope characteristics are compensated in total across the transmission path, wherein the dispersion and dispersion slope characteristics imparted by the dispersion slope imparting section on the transmitting side are different from those on the receiving side, and the dispersion and dispersion slope characteristics imparted by the dispersion slope imparting section on the transmitting side to a wavelength division multiplexed optical signal in a short wavelength region have a comparable value of the dispersion slope but the wavelength providing a zero dispersion is shifted to a shorter wavelength side, as compared to those imparted to the wavelength division multiplexed optical signal in a long wavelength region, and the dispersion and dispersion slope characteristics imparted by the dispersion slope imparting section on the receiving side to the wavelength division multiplexed optical signal in a short wavelength region have a comparable value of the dispersion slope but the wavelength providing a zero dispersion is shifted to a longer wavelength side, as compared to those imparted to the wavelength division multiplexed optical signal in a long wavelength region.