OPTICAL TRANSMISSION SYSTEM

摘要

PROBLEM TO BE SOLVED: To effectively use the band for wavelength-division multiplex transmission by effectively suppressing crosstalk from an adjacent channel and shortening wavelength intervals. SOLUTION: The optical transmission system multiplexes and transmits by a transmission part signal lights of N channels generated by modulating lights of wavelengths λ1 to λN (N: integer larger than 1, λ1<λ2<...<λN) with signals of channels 1 to N to an optical fiber transmission line, demultiplexes the signal lights of the N channels after wavelength-multiplex transmission through the optical fiber transmission line, and detects the signal lights of the respective channels; and the transmission part 10 is equipped with dispersion imparting parts 12-1 to 12-n which impart mutually different wavelength dispersion to the signal lines of at least adjacent channels (wavelengths) and a reception part 20 is equipped with dispersion compensators 22-1 to 22-n which compensate the wavelength dispersion imparted to the signal lights of the respective channels and the wavelength dispersion of the optical fiber transmission line.