摘要
为了深入研究光电振荡器(OEO)的单模振荡以及提高频率稳定性,提出一种电注入锁定(OEO模型。从注入锁定理论出发,理论分析了此模型对于提高稳定度和边模抑制的优越性,以及硬件实验方案的可行性。实验结果表明,在电滤波器带宽60MHz的条件下,注入锁定方案实现了光纤长为2.776km的OEO单环单模振荡,边模抑制比(SMSR)大于50dB,得到载波为10GHz,相位噪声为-100dBc/Hz@10kHz(注入源信号的相位噪声-86dBc/Hz@10kHz);以注入源信号为参考,把锁定信号与注入信号鉴相,通过阿伦方差计算,得到×10-13的短期稳定度和×10-16的长期稳定度。
In order to deeply study the method of the optoelectronic oscillator （OEO） for single mode oscillation and improving the frequency stability,an electric injection locked OEO model is presented in this paper, the injection locked theory is studied, then the superiority of improving the frequency stability and the side mode suppression rate （SMSR） ,furthermore the practicability of the hard experiment based on the injection locked theory are analyzed. Moreover, an electric injection-locked optoelectronic oscillator experimental system is designed. The experimental results show that under the condition of the filter bandwidth of 60 MHz,the single loop and the single mode oscillation are realized by the injection locked scheme,and SMSR is more than 50 dB,then the phase noise is obtained by --100 dBc/Hz at 10 kHz （the phase noise of the injection source signal is --86 dBc/Hz at 10 kHz） ,and the carrier frequency is 10 GHz. Finally the injection source signal is considered as reference source, the phase discrimination is made between the locked signal and the injection source signal, and the result is acquired by the Allen variance. Finally, the short-tern： stability loss is at magnitude of order of 10^-13, and long-term stability loss is at magnitude of order of × 10^-16.
出处
《光电子．激光》
EI
CAS
CSCD
北大核心
2013年第8期1456-1460,共5页
Journal of Optoelectronics·Laser
基金
国家自然科学基金(61174199,61032005,61177065)资助项目
