A method and the transponder for the optimization of the dispersion compensation as well as their use in optical networks with path protection

摘要

The invention relates to a method for optimization of dispersion compensation in an optical data network (1), the network (1) comprising two nodes (A, B), at least two paths (AB, ACB) connecting the two nodes (A, B), and means (2, 3) for switching between the paths (AB, ACB), characterized in that the network (1) comprises a common tuneable dispersion compensator (=TDC) (4) for all of the at least two paths (AB, ACB), that prior to use of the network (1), for each path (AB, ACB), a set of optimized operating parameters of the network (1) is determined and stored, wherein the operating parameters of the network (1) include operating parameters of the TDC (4), and that in use of the network (1), upon switching to a path (AB, ACB), the network (1) is automatically adjusted to a set of initial operating parameters based upon the set of predetermined operating parameters of the respective path (AB, ACB). The method requires only a simply designed optical data network, and at the same time allows a fast re-establishing of data transfer upon switching of paths in a 40 Gbit/s (or higher) system.