METHOD AND ARRANGEMENT FOR THE PHASE SYNCHRONIZATION BETWEEN SEVERAL DATA SIGNALS FOR GENERATING AN OPTICAL OTDM SIGNAL

摘要

The invention relates to a method and arrangement for the phase synchronization between several data signals for generating an optical OTDM signal. According to said invention, at least one spectral portion of the optical OTDM signal is received, from which an optical spectrum in the area of the bit rates in relation to the optical frequency of the optical OTDM signal is derived. Relative positions between phases of the electromagnetic carrier waves of the data signals are then determined by means of said optical spectrum. A high-precision relative synchronization between dephased added data signals is thus realized. Said method is substantially advantageous in that the determination of the relative phase positions can be used as a criterion for a regulation of phase adjusters in each path.