光通信技术2019，Vol.43Issue(2)：30-33,4.DOI:10.13921/j.cnki.issn1002-5561.2019.02.007
光DPSK调制系统眼图交叉点控制技术
Eye diagram crossing-point control technology in optical DPSK modulation system
摘要
Abstract
For the optical phase modulation process, the phenomenon of eye diagram cross-point floating occurs because of the optical modulator affected by external influences and the instability of the input signal. The real-time control of the eye crossing-point voltage through the zero-crossing level has realized by an adaptive control scheme. And with the digital control DC level of the zero level circuit changed, the correction of the crossing point of the modulated signals and fluctuation of the eye crossing point has solved. It is verified by experiments that the output percentage of the crossing-point of the eye diagram is obviously improved and the offset error was reduced, the opening effect of eye diagram is better and the output signal is effectively stabilized. Finally, the feasibility of the scheme design is verified.关键词
光相位调制/眼图交叉点/数控直流电平/自适应控制Key words
optical phase modulation/eye diagram intersection/digitally controlled DC Level/adaptive control分类
信息技术与安全科学引用本文复制引用
张慧颖..光DPSK调制系统眼图交叉点控制技术[J].光通信技术,2019,43(2):30-33,4.基金项目
吉林省教育厅项目(JJKH20180561KJ)资助 （JJKH20180561KJ）
