Patent ID: 8699880
Filing Date: 2014-04-15
Classification: H04B,H04J,H04L

Abstract:
1. A polarization multiplexed optical system, comprising: a transmitter configured to transmit a polarization multiplexed signal and to insert a pilot tone as a state of polarization reference for the polarization multiplexed signal; and a receiver communicatively coupled to the transmitter and configured to extract the pilot tone and correspondingly detect the polarization multiplexed signal based on the extracted pilot tone; wherein detecting the polarization multiplexed signal based on the extracted pilot tone comprises extracting X and Y components of each of a vertically polarized and horizontally polarized pilot tone, with the X and Y components being polarization axes of a polarization beam splitter at the receiver, and processing the X and Y components, each being low speed signals, with a low speed interpolator digital signal processing block.