摘要
提出了一种利用单个半导体光放大器实现超高速全光采样的方法。该方法利用半导体光放大器的非线性偏振旋转效应,经过半导体光放大器后模拟光信号的波形被复制到采样脉冲光信号的包络上,实现对模拟光信号的高速全光脉冲采样。实验演示中,分别验证了对2.5GHz的模拟光信号的40GSa/s的全光脉冲采样。实验结果测试分析表明,在工作功率为5mW时,本方法的基波转换效率为1.35、总谐波失真达到2.01%。在此基础上,进一步提高采样工作速率,验证了对10GHz模拟信号的160GSa/s的全光采样。采样方法具有只需单个有源器件且操作光功率小的特点。
An all-optical sampling scheme using a single semiconductor optical amplifier is proposed for analog signal processing.The analog optical signal is sampled by the probe pulse train through the nonlinear polarization rotation arising in semiconductor optical amplifier.Conversion efficiency and total harmonic distortion are presented to evaluate sampling linearity.In the experiment,40GSa/s all-optical sampling for 2.5GHz analog optical signal is demonstrated with commercially available fiber-pigtailed components.The results show that the fundamental conversion efficiency and the total harmonic distortion are 1.35 and 2.01%at the operating power of 5 mW,respectively.Further,160GSa/s all-optical pulsed sampling for 10 GHz analog optical signal is also demonstrated.The proposed all-optical sampling requires only one semiconductor optical amplifier and has low power consumption.It is simple and potential for photonic integration.
出处
《数据采集与处理》
CSCD
北大核心
2014年第6期917-921,共5页
Journal of Data Acquisition and Processing
基金
国家重点基础研究发展计划("九七三"计划)(2012CB315701)资助项目
信息光子学与光通信国家重点实验室开放基金资助项目
国家自然科学基金(61377037
61090393
61307031)资助项目
四川省青年基金(2013JQ0026)资助项目
教育部新世纪人才支持计划(NCET-11-0069)资助项目
关键词
半导体光放大器
非线性偏振旋转
全光采样
semiconductor optical amplifier
nonlinear polarization rotation
all-optical sampling
