Optical wavelength multiplex transmission method and optical dispersion compensation method

摘要: The invention provides an optical wavelength multiplex transmission method wherein a band in the proximity of zero dispersion fiber is used and signals are disposed at efficient channel spacings taking influence band, four wave mixing into consideration to realize communication system increased capacity which not influenced by crosstalk FWM. When plurality channels having different wavelengths be multiplexed transmitted using fiber, suppressing guard predetermined bandwidth including zero-dispersion λθ set, signal light waves arranged on one shorter side longer outside band.