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基于啁啾周期极化铌酸锂波段可选择光采样研究 被引量：4

Study on Waveband Optional Optical Sampling Based on Chirped Periodically Poled LiNbO_3 Waveguide
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摘要 对利用啁啾周期极化铌酸锂(CPPLN)波导的和频效应(SFG),实现能覆盖整个C波段和L波段的光采样技术进行了研究。从耦合模方程开始,对转换效率和带宽进行了数值计算和仿真。对传输速率为10 Gb/s的光信号NRZ序列采样,通过软件同步算法恢复采样结果,得到了清晰的眼图和高质量的Q因子。从仿真结果可以看出应用CPPLN波导比周期极化铌酸锂(PPLN)波导具有更宽的带宽,在调谐的抽运光下,可以对C波段和L波段范围内的任何波段进行选择采样,且波段的宽窄可以根据需要,通过调节波导长度和波导啁啾系数进行任意调节。与PPLN波导中的SFG相比,啁啾周期极化铌酸锂(CPPLN)波导的SFG具有更宽的采样带宽、更灵活的波段选择性。 Optical sampling covering C band and L band based on sum frequency generation（SFG） in chirped periodically poled LiNbO3（CPPLN） is studied.Based on coupled-wave equations,the simulations and numerical computations of the transmission rate and bandwidth are carried out.NRZ sequences of the signal pulses with the transmission rate of 10 Gb/s are sampled.Distinct eye diagrams and quality factor Q are obtained by software-synchronized algorithm.The results show that arbitrary waveband inside C and L band can be sampled by tuning pump wavelength and that the bandwidth of the waveband is controllable by adjusting the waveguide length and the chirped coefficient of CPPLN waveguide.SFG in CPPLN waveguide used for optical sampling system has broader bandwidth and more flexible selectivity than that in PPLN waveguide.
作者 宁春梅 杨爱英 沈世奎 吴翔宇 孙雨南
机构地区 北京理工大学光电学院
出处 《光学学报》 EI CAS CSCD 北大核心 2010年第11期3270-3275,共6页 Acta Optica Sinica
基金 国家自然科学基金(60777024 60978007)资助课题
关键词 非线性光学 光采样 固定频差采样 周期极化铌酸锂波导 nonlinear optics optical sampling fixed offset frequency asynchronous sampling chirped periodically poled LiNbO3 waveguide
分类号 TN252 [电子电信—物理电子学] TN913.7 [电子电信—通信与信息系统]
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参考文献16

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共引文献10

同被引文献35

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二级引证文献7

光学学报
2010年 第11期

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