We build noise models for analyzing the effect of four main noise terms consisting of the amplitude fluctuation of optical sampling pulse trains, timing jitter of optical sampling pulse trains, quantization and aperture jitter noise of electrical analog to digital converters, and noise in photodiodes on time interleaved photonic analog to digital converters. The analyses indicate that the random processes in the optical sampling pulse train and aperture of electrical analog to digital converters have significant effect on both the unmodulated and modulated components in the sampling results. Both quantization noise of electrical analog to digital converters and noise in photodiodes are unrelated to the optical sampling and can be considered as additive noises. Furthermore, we analyzed digital frequency spectra of different noises after time interleaving. To validate the theoretical model, we conduct the corresponding experiments, indicating the experimental results being consistent with the proposed noise models.

中文翻译：

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时间交错光子模数转换器的噪声表征

我们建立了噪声模型来分析四个主要噪声项的影响，包括光采样脉冲序列的幅度波动、光采样脉冲序列的定时抖动、电模数转换器的量化和孔径抖动噪声以及光电二极管中的时间噪声交错光子模数转换器。分析表明，光采样脉冲序列和电模数转换器孔径的随机过程对采样结果中的未调制和调制分量都有显着影响。电模数转换器的量化噪声和光电二极管中的噪声都与光采样无关，可以被视为加性噪声。此外，我们分析了时间交织后不同噪声的数字频谱。为了验证理论模型，我们进行了相应的实验，表明实验结果与提出的噪声模型一致。