摘要
介绍了一种具有高稳定性、高谱纯度、低相位噪声的双环路光电振荡器(OEO)。理论上分析了光电振荡器的基本原理,采用光域双环路的方案有效地实现了边模抑制,通过检测输出信号频率的变化来控制光纤环路的长度,从而得到了高质量的20GHz微波信号,其频谱纯度高,线宽小于1Hz,相位噪声在10kHz时为-112dBc/Hz,而且在4h观测时间内,频率的稳定性小于10-10。
A kind of dual-loop optoelectronic oscillator（OEO） with high stability,high spectral purity and low phase noise is introduced.The principle of OEO is analyzed theoretically.Side-mode suppression is achieved by using dual-loop in optical domain.The length of fiber loop is controlled by detecting the change of output signal′s frequency.Experiment results of a 20 GHz radio frequency signal with high quality are obtained.It has high spectral purity.Its line width is less than 1 Hz and phase noise is-112 dBc/Hz at 10 kHz.And its frequency stability achieves 10-10 in 4 h.
出处
《中国激光》
EI
CAS
CSCD
北大核心
2012年第3期166-170,共5页
Chinese Journal of Lasers
关键词
光通信
光电振荡器
双环路光电振荡器
边模抑制
频率稳定
腔长控制
optical commuincations
optoelectronic oscillator
dual-loop optoelectronic oscillator
side-mode suppression
frequency stability
cavity length control
