K波段高稳光电振荡器  

K-Band and High Stability Optoelectronic Oscillator

作　　者：孙斌[1] 于晋龙[1] 王菊[1] 苗旺[1] 孟天晖[1] 王文睿[1] 杨恩泽[1] 

机构地区：[1]天津大学电信学院光纤通信实验室,天津300072

出　　处：《中国激光》2012年第3期166-170,共5页Chinese Journal of Lasers

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.

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 

分 类 号：TN929.1[电子电信—通信与信息系统]