Patent ID: 8977125
Filing Date: 2015-03-10
Classification: H04B,H04J

Abstract:
1. A method of performing Orthogonal Polarization Detection, the method comprising: receiving an optical transmission signal having a first signal associated with a horizontal light wave polarization and a second signal associated with a vertical light wave polarization, the first signal having a horizontal polarization pilot tone, and the second signal having a vertical polarization pilot tone, a spectrum of the first signal and a spectrum of the horizontal polarization pilot tone being offset in frequency from a spectrum of the second signal and a spectrum of the vertical polarization pilot tone; processing the received optical transmission signal by selecting the horizontal polarization pilot tone and selecting the vertical polarization pilot tone and recovering a phase and frequency recovered first signal associated with the horizontal light wave polarization and a phase and frequency recovered second signal associated with the vertical light wave polarization, wherein processing the received optical transmission signal comprises splitting the received optical transmission signal into a first channel signal and a second channel signal; and using a vertical polarization pilot tone and a horizontal polarization pilot tone from the first channel signal to produce a first horizontal phase and frequency recovered signal and a first vertical phase and frequency recovered signal and using a vertical polarization pilot tone and a horizontal polarization pilot tone from the second channel signal to produce a second horizontal phase and frequency recovered signal and a second vertical phase and frequency recovered signal.