WAVELENGTH MULTIPLEX OPTICAL TRANSMISSION SYSTEM, DESIGN METHOD FOR LOSS DIFFERENCE COMPENSATION DEVICE FOR OPTICAL DEVICE USED FOR THE WAVELENGTH MULTIPLEX OPTICAL TRANSMISSION SYSTEM AND BUILDUP METHOD FOR THE WAVELENGTH MULTIPLEX OPTICAL TRANSMISSION SYSTEM

摘要

PROBLEM TO BE SOLVED: To send a wavelength multiplex optical signal in a broad wavelength band to a long distance by compensating the loss difference of an optical signal with each wavelength, produced in the wavelength multiplex optical signal with a transmission loss characteristic of wavelength dependence of an optical transmission line or a scattering compensation device itself. SOLUTION: An optical transmission line 4, through which a wavelength multiplex optical signal with a broad wavelength band resulting from applying wavelength multiplexing to optical signals with many kinds of wavelength bands λ1-λn are transmitted, is provided with a loss difference compensation device 5A, that compensates a loss difference of the optical signals with the wavelength bands λ1-λn which are produced in the wavelength multiplex optical signal by the transmission loss characteristic of wavelength dependence of the optical transmission line 4.