基于单环光电振荡的宽带二倍频信号产生方法  

Generation of wideband frequency-doubling signal based on optoelectronic oscillator

作　　者：滕义超 陈亦望[1] 张宝富[1] 戴蒙[1] 卢麟[1] 张品[1] 

机构地区：[1]解放军理工大学野战工程学院,江苏南京210007

出　　处：《光电子．激光》2016年第8期804-808,共5页Journal of Optoelectronics·Laser

基　　金：国家自然科学基金(61371121;61174199);江苏省自然科学基金(BK2012509;BK20150715)资助项目

摘　　要：提出了一种基于单环光电振荡器(OEO)的宽带二倍频信号产生方法。将射频(RF)信号经过第1级马赫-增德尔调制器(MZM)调制到光信号上,通过控制第1级MZM的偏置电压,使得其工作在最小传输点(MITP)上,产生的-1阶和+1阶边带信号通过第2级MZM注入到由单膜光纤(SMF)、光电检测器(PD)和电放大器(amplifier)组成的光电振荡环腔中,光电检测后产生二倍频信号,信号的频率稳定度由信号源的稳定度决定,信号的相位噪声由光电振荡环腔决定。在实验结构简单的条件下,有效实现了宽带二倍频信号产生。实验结果表明,当本文系统可以实现对C波段和X波段信号二倍频,输出信号的相位噪声在10kHz偏移处均低于-102dBc/Hz。A kind of wideband frequency-doubling signal generation based on optoelectronic oscillator （OEO） is demonstrated in this paper. The radio frequency （RF） source is modulated on the optical signal with the first Mach-Zehnder modulator （MZM）. The first MZM is biased at the minimum transmission point （MITP） to eliminate the --1 and ＋ 1 sidebands. The optical signal is sent to the second MZM and the optoelectronic loop which consists of the single mode fiber （SMF）,photodetector （PD） and RF am- plifier. The frequency-doubling signal is generated by the PD, the frequency stability of the generated sig- nal is determined by the RF source,and the phase noise is controlled by the optoelectronic loop. The gen- eration of the wideband frequency-doubling signal is realized with a single experiment structure. In the experiment ,C band and X band signals can implement frequency doubling with the system and the phase noise of the generated signal is lower than --102 dBc/Hz at 10 kHz.

关 键 词：光电振荡器(OEO) 二倍频 宽带 相位噪声 频率稳定度 

分 类 号：TN929[电子电信—通信与信息系统]