采用OFDM信号作为标记的光分组交换方案

以光正交频分复用信号作为光标记,利用两个不同波长的光载波分别经过强度调制,产生了10 Gb/sOOK光载荷和2.5 Gb/sOFDM光标记。测得了光分组信号经光纤传输前后接收载荷的眼图和标记的星座图以及误码率曲线,结果表明:经过40 km光纤传输后,载荷与标记的功率代价分别为1dB和0.5dB。

An Optical Packet Switching System with a Novel Scheme for Using Optical OFDM Label Signal

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