Patent ID: 8090268
Filing Date: 2012-01-03
Classification: H04J,H04L

Abstract:
1. A process for transmitting data on an optical fiber comprising: wavelength division multiplexing of signals coming from a plurality of monochrome transmitters, each of which has its own wavelength and a slave local clock, modulating information to be transmitted by a carrier realized per channel, and reformatting a non-return to zero (NRZ) formatted, multiplexed signal to a return to zero (RZ) multiplexed signal or to carrier suppression return to zero (CS-RZ) multiplexed signal with an optical gate comprising an electro-optical modulator and a clock, wherein said reformatting is common and simultaneous for all carriers in the multiplexed signal, and wherein each slave local clock from each transmitter is controlled by a synchronization circuit comprising a master clock and a phase locked loop (PLL), said master clock controlling the clock of said optical gate and each slave local clock by using said phase locked loop which supplies the synchronization signal for each of the transmitters.