基于压缩脉冲载波的远端上变频光载射频系统

发布时间：2018-03-14 10:47

本文选题：光通信　切入点：上变频　出处：《中国激光》2014年04期 　论文类型：期刊论文

【摘要】：提出并实现了一种用光纤色散压缩脉冲为载波的上变频射频光载系统。该系统把传统的连续光载波替换为频率啁啾脉冲,利用传输光纤色散压缩脉冲宽度,增强谐波分量,使脉冲载波上的信号在接收端转换到脉冲高次谐波上,从而实现了远端上变频。该方法的特点是用低频本振就可实现高频微波信号的产生,发射端无需电倍频器、混频器,接收端只需用滤波器选择所需频率信号,系统结构简单。应用该方法实现了2Gbit/s信号经60km普通单模光纤传输后远端上变频到16GHz、经过5.4m无线传输后误码率低于10-8的射频光载系统,系统中只有一个光功率放大器,无光在线和预放大以及光滤波器和色散补偿。
[Abstract]:A radio frequency upconversion optical carrier system using fiber dispersion compression pulse as carrier is proposed and realized. The system replaces the traditional continuous optical carrier with frequency chirped pulse and uses the transmission fiber dispersion to compress the pulse width to enhance the harmonic component. The signal on the pulse carrier is converted to the high order harmonic of the pulse at the receiving end, thus realizing the remote up-conversion. The characteristic of this method is that the generation of the high frequency microwave signal can be realized by using the low frequency local oscillator, and the transmitter does not need a frequency multiplier or mixer. The receiver only needs a filter to select the desired frequency signal, and the system structure is simple. By using this method, a radio frequency optical loading system with a bit error rate of less than 10 ~ (-8) is realized when the signal is transmitted by 60 km ordinary single-mode optical fiber and the remote end is converted to 16 GHz, and the error rate is less than 10 ~ (-8) after the 5.4m wireless transmission. There is only one optical power amplifier in the system, non-optical on-line and pre-amplifier, optical filter and dispersion compensation.
【作者单位】：清华大学电子工程系清华信息科学与技术国家实验室;
【基金】：国家自然科学基金(61007045,61025004,61032005)
【分类号】：TN929.11

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