Mode-locked diode laser based optical communication system

摘要

An optical transmission system comprises a plurality of mode- locked diode lasers each providing an output pulse at a different respective sub- carrier frequency. Means are provided for modulating each sub-carrier in response to respective input signals for providing a plurality of optical signals for transmission. A reference sub-carrier having a frequency such that the intervals between the reference sub- carrier frequency of each of the respective signal carrying sub-carrier channel frequencies is distinguishable from the intervals between respective signal carrying sub- carrier channels.