A method and system for effective data transmission in an optical telecommunications network in wavelength division multiplexed operation of a plurality of different optical wavelengths, the optical telecommunications network comprising a plurality of network nodes, optical telecommunications network, computer program and computer program product

摘要

There is provided a method of effectively transmitting data in a wavelength division multiplex (WDM) optical telecommunications network of different optical wavelengths, the optical telecommunications network having a plurality of network nodes, each one pair of network nodes of the plurality of network nodes - comprising a first network node and a second network node - are interconnected by at least one optical transmission path for data transmission, wherein the at least one optical transmission path has a first portion and a second portion such that the first and second network nodes by means of the first portion of at least one optical transmission link are connected to each other and the first and second network nodes are also connected to each other by means of the second portion of the at least one optical transmission path also with each other, wherein d The optical transmission path for data transmission in a first direction at least a first optical data transmission line and for data transmission in a second direction opposite second direction at least a second optical data transmission line, wherein in the first and second partial area, both the first data transmission line and the second data transmission line respectively the optical transmission path, wherein the method comprises the following steps: - for data transmission from the first network node to the second network node - at the location of the first network node - coupled a first wavelength optical signal in the first data transmission line and in the second data transmission line and the optical signal the first wavelength - at the location of the second network node coupled out of at least one of the first and second data transmission line and - for data transmission from the second Net At the location of the second network node, an optical signal of a second wavelength different from the first wavelength is coupled into the first data transmission line and the second data transmission line is coupled to the second network node at the location of the first network node from at least one of the first network nodes and second data transmission line decoupled.