摘要
基于维纳-欣钦定理,推导出了宽谱光源干涉特性的表达式并进行了分析。建立了基于迈克耳逊干涉仪的相干函数测试装置,采用相关调制解调的信号技术,实现了任意谱形宽谱光源的干涉特性的精确测量。在此基础上,分别对超荧光光纤光源(SFS)、法布里珀罗(FP)结构和量子阱(QW)结构超辐射发光二极管(SLD)的干涉特性进行了对比试验研究,试验曲线与理论分析相吻合,并发现FP结构SLD的相干长度随着注入电流增加而变长,而QW结构SLD的相干长度随着注入电流增加而变短。
Based on Wiener-Khinchin theorem,the coherence equation of broadband source has been derived and analysed. A precision setup base on Michelson interferometer configuration was made and the coherence characteristic curve of broad source with arbitrary spectrum profile was obtained accurately with modulation/demodulation technology. The coherence characteristics curves of superfluorescent fiber source（SFS）, Fabry-Perot（FP） type and quantum well （QW） type superfluorescent diode（SLD） were investigated and compared respectively. The results agree with theory analysis well. It was found firstly that the coherence length of F P type SLD increases with inject current increasing,while the QW type SLD is on the contrary.
出处
《光电子．激光》
EI
CAS
CSCD
北大核心
2006年第3期372-376,共5页
Journal of Optoelectronics·Laser
基金
国家自然科学基金资助项目(60207002)
关键词
宽谱光源
相干函数
迈克耳逊干涉仪
broadband source
coherence function
Michelson interferometer
