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Nonlinear characterization of a silicon integrated Bragg waveguide filter

机译:硅集成布拉格波导滤波器的非线性表征

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Bragg waveguides are promising optical filters for pump suppression in spontaneous four-wave mixing (FWM) photon sources. In this work, we investigate the generation of unwanted photon pairs in the filter itself. We do this by taking advantage of the relation between spontaneous and classical FWM, which allows for the precise characterization of the nonlinear response of the device. The pair generation rate estimated from the classical measurement is compared with the theoretical value calculated by means of a full quantum model of the filter, which also allows investigation of the spectral properties of the generated pairs. We find a good agreement between theory and experiment, confirming that stimulated FWM is a valuable approach to characterize the nonlinear response of an integrated filter, and that the pairs generated in a Bragg waveguide are not a serious issue for the operation of a fully integrated nonclassical source. (c) 2018 Optical Society of America
机译:布拉格波导是有前途的光学滤波器,用于自发四波混合(FWM)光子源中的泵抑制。 在这项工作中,我们研究了过滤器本身中不需要的光子对的产生。 我们通过利用自发和经典FWM之间的关系来实现这一点,这允许设备的非线性响应的精确表征。 将根据经典测量估计的一对生成速率与通过滤波器的完整量子模型计算的理论值进行比较,这也允许研究所生成的对的光谱特性。 我们在理论和实验之间找到了良好的一致性,确认刺激的FWM是表征集成过滤器的非线性响应的有价值的方法,并且在布拉格波导中产生的对对完全集成的非分化的操作不是一个严重的问题 来源。 (c)2018年光学学会

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