| 李城鑫,陈福深,陈开鑫.基于串联耦合双循环延时线的可重构光电振荡器[J].光电子激光,2014,(7):1237~1241 |
| 基于串联耦合双循环延时线的可重构光电振荡器 |
| A reconfigurable optoelectronic oscillator based on series-coupled double recirculating delay lines |
| 投稿时间：2014-03-21 |
| DOI： |
| 中文关键词: 光电振荡器(OEO) 微波光子滤波器(MPF) 微波产生 可重构 |
| 英文关键词:optoelectronic oscillator (OEO) microwave photonic filter (MPF) microwave gene ration reconfigurable |
| 基金项目:国家自然科学基金(61177054)资助项目 (电子科技大学 通信与信息工程学院,四川 成都 611731) |
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| 中文摘要: |
| 针对光电振荡器(OEO)系统,设计了一种可实现滤 波功能的串联耦合双循环延时线(SC-DRDLs),并与放大自发辐射(ASE)宽带激光源、Mach- Zehnder调制器(MZM)、偏振分束器(PBS)相结合形成微波光子滤波 器(MPF)。利用结构中ASE宽带激光源相干时间小于SC-DRDLs固有延时的特性,实现MPF的非 相干性。同时 SC-DRDLs的双循环延时线级联特性,决定系统具有大的自由频谱范围,再结合其双输出端 口与PBS形成的双环结构, 完成系统的高边摸抑制性能。理论分析和实验结果表明,本文系统能产生高频谱纯度、长 期稳定性和低相位噪声 的微波信号；通过改变SC-DRDLs的环长,可对MPF进行重构,进而调谐振荡频率。 |
| 英文摘要: |
| A series-coupled double recirculating delay line (SC-DRDL) with fi lter response is designed based on optoelectronic oscillator (OEO) system,which can form a microwave photonic filt er (MPF) by combination of an amplified spontaneous emission (ASE) source,a Mach-Zehnder modulator (MZM) and a polarization beam splitter (PBS).In the structure,the incoherence can be performed due to the coherence t ime of the ASE source is much smaller than the delay of the SC-DRDLs.Meanwhile,the large free spectral range of the system can be obtained by series characteristics of the double recirculating delay lines for SC-DRDLs,along with utili zation of the dual-loop system between the dual outputs of the SC-DRDLs and PBS,So the high sidemode suppression perf ormance is achieved.A detailed theoretical analysis is provided,which is verified by experiment.A microwave s ignal with high spectral purity,long-term stability and low single-sideband (SSB) phase noise is generated.In addition,by changing the loop lengths of the SC-DRDLs, the MPF is reconfigured and the oscillation frequency of the OEO can be simply t uned. |
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