Patent ID: 9264172
Filing Date: 2016-02-16
CPC Classification: H04B,H04J

Claim Text:
1. A method of optical data transmission, comprising: inputting a first signal into a first controlled time-discrete filter; inputting a second signal into a second controlled time-discrete filter, wherein said first signal and said second signal are separate from each other as they traverse their respective controlled time-discrete filter; generating a first optical signal by modulating a phase of a first monochromatic optical signal with an output of said first controlled time-discrete filter; generating a second optical signal by modulating a phase of a second monochromatic optical signal with an output of said second controlled time-discrete filter, wherein said first optical signal and said second optical signal possess generating a combined optical signal, by combining said first optical signal and said second optical signal, wherein said combined optical signal possesses a polarization state with a predetermined variation determined by the controlled time-discrete filters, and wherein said respective polarization states of said first optical signal and said second optical signal remain orthogonal to each other; and transmitting said combined optical signal over an optical transmission line, the method further comprising, receiving said combined optical signal; generating at least two time-discrete sampled signals, by sampling the received combined optical signal along two orthogonal polarization planes; generating at least two filtered signals, by filtering said at least two time-discrete sampled signals in a time-discrete domain, using a function indicative of said respective predetermined variations; and deriving respective data values from said at least two filtered signals.