Patent ID: 9698932
Date: 2017-07-04
CPC Classifications: H04B,H04J,H04L

Claim:
1. An optical transmission and reception system comprising a transmitter and a receiver, the transmitter including: a known signal generator configured to output a known signal sequence; a control signal modulator configured to phase-modulate the known signal sequence using control information; a transmitter-transducer configured to transduce output signals of the known signal generator and the control signal modulator from electricity to light respectively and; a polarization-multiplexer configured to polarization-multiplex the output signals transduced to generate an optical signal, and the receiver including: a reception-transducer configured to receive the optical signal outputted from the transmitter and to transduce the optical signal received into electrical signals separated by every polarized wave component; an analog to digital converter configured to convert the electrical signals to digital received-signals; and a control signal demodulator configured to extract a phase relationship between the digital received-signals to demodulate the digital received-signals to the control information based on the phase relationship extracted.