Patent ID: 9071382
Filing Date: 2015-06-30
Classification: H04B,H04J

Abstract:
1. Method of optical data transmission, comprising receiving a first time-discrete data signal and a second time-discrete data signal at a same sampling rate, generating a third time-discrete data signal and a fourth time-discrete data signal at said sampling rate, using said first data signal and said second data signal, wherein said first data signal and said second data signal are delayed to each other by a delay time that is varied over time at a variation frequency that is significantly smaller than said sampling rate using at least two delay elements, modulating at least a phase of a first optical signal, said signal having a wavelength and a first polarization state, in dependence on said third data signal, modulating at least a phase of a second optical signal, said signal having said wavelength and a second polarization state, in dependence on said fourth data signal, transmitting the modulated first optical signal and the modulated second optical signal into an optical fibre, such that said first polarization state of said modulated first optical signal is orthogonal to said second polarization state of said second modulated optical signal, wherein said first time-discrete data signal and said second time-discrete data signal contribute to said third time-discrete data signal, and wherein said first time-discrete data signal and said second time-discrete data signal contribute to said fourth time-discrete data signal.