中国激光, 2012, 39 (3): 0305010, 网络出版: 2012-02-22
K波段高稳光电振荡器
K-Band and High Stability Optoelectronic Oscillator
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
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20 GHz微波信号，其频谱纯度高，线宽小于1 Hz，相位噪声在10 kHz时为-112 dBc/Hz，而且在4 h观测时间内，频率的稳定性小于10-10。
Abstract
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.
孙斌, 于晋龙, 王菊, 苗旺, 孟天晖, 王文睿, 杨恩泽. K波段高稳光电振荡器[J]. 中国激光, 2012, 39(3): 0305010. Sun Bin, Yu Jinlong, Wang Ju, Miao Wang, Meng Tianhui, Wang Wengrui, Yang Enze. K-Band and High Stability Optoelectronic Oscillator[J]. Chinese Journal of Lasers, 2012, 39(3): 0305010.
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