Wavelength division multiplexing optical communication system and wavelength division multiplexing optical communication method

摘要: The object of the present invention is to provide a WDM optical communication system and method wherein deviation transmission characteristics signals respective wavelengths reliably controlled, based on reception information such as OSNR, BER like measured at receiving end, thereby enabling optimal conditions be realized. For this purpose, transmits signal light λ1˜λn, which has been generated by transmitting end one terminal station, other station through an path. At OSNR λ1˜λn are measured, result superimposed overhead transmitted along opposing line path information. settings pre-emphasis parameter α feedback controlled about each wavelength transmitted, thus suppressed.