System and method for the estimation of interferometric OSNR for multiple polarization

摘要

System and method for the estimation of interferometric OSNR for multiple polarization comprising a bandpass filter (6), a polarization beam splitter (PBS, 7) which provides in its two outputs two orthogonally polarized signals, at least one Mach Zehnder interferometer for delay. Line (mzdli, 9, 9a, 9B) coupled to a driver (10) and a photodetector (11).At least one analog digital converter (12) and a digital signal processor (DSP), 13), based on the method on the normalized autocorrelations of the signal and noise, determined from a phase calibration based on two signals with known values of OSNR