A novel optical packet switching scheme,in which an optical orthogonal frequency division multiplexing (OOFDM) signal is generated as a label,is proposed and experimentally demonstrated.The 10 Gb/s OOK optical payload and the 2.5 Gb/s OFDM optical label are produced by intensity modulation of two continuous waves with different wavelength,respectively.In the experiment,the eye diagrams of the payload,constellation diagrams of the label and the BER curves of the label and payload are obtained,when the optical packets were transmitted on optical fiber or not.It is experimentally demonstrated that the power penalties for the payload and the label after 40 km fiber transmission are 1 dB and 0.5 dB,respectively.The scheme is easy to implement,so it can be used in an optical label switched network.