Patent ID: 7539415

Claim:
An optical communication system using a labeling of a wavelength-offset polarization-division multiplexing, comprising: an optical signal transmitter provided at an ingress node positioned at a sending end in an optical packet switching network, which generates and combines packet data and a label, and transmits an optical signal including the combined packet data and label to a core node, wherein the transmitted packet data and label have polarization directions perpendicular to each other and maintain a predetermined wavelength interval; and a label swapping device that detects the label from the combined packet data and label received from the optical signal transmitter, adjusts a polarization of the optical signal from the optical signal transmitter, detects next moving position information of the packet data, generates a new label, substitutes the detected label by the new label, combines the new label with the packet data, and transmits the combined packet data and new label to a next moving position, wherein the predetermined wavelength interval is from 12 GHz to 20 GHz, when a transmission speed of the packet data is 10 Gb/s.