A method of transmitting optical data includes providing a plurality of light sources in a transmission system, transmitting a data signal with data to be transmitted to the transmission system, decomposing the data signal in the transmission system into N different sub-signals, wherein N is a natural number with N≥2, and controlling the light sources based on the sub-signals such that each of the light sources emits light according to one of the sub-signals and the light emitted overall by the light sources transmits the data.