Optical sinc-shaped Nyquist pulses are promising in photonic signal processing and high-speed optical data transmission due to their orthogonality and inter-symbol interference (ISI) free characteristics. Nonetheless, the presence of non-idealities results in a deteriorated system performance, especially for the metrological assessment of sampling precision. In this work, we explore the impact of the optical filter roll-off factor on Nyquist pulses for a three-line comb with a frequency spacing of 8.4 GHz using a wideband on-chip silicon Mach-Zehnder modulator. Furthermore, we characterize the integrated modulator and compare the sinc-shaped Nyquist pulse quality with the recently reported works.

中文翻译：

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片上 Mach-Zehnder 调制器产生的光学奈奎斯特脉冲的滚降因子分析

由于其正交性和无符号间干扰 (ISI) 特性，光正弦形奈奎斯特脉冲在光子信号处理和高速光数据传输中很有前景。尽管如此，非理想情况的存在会导致系统性能下降，特别是对于采样精度的计量评估。在这项工作中，我们使用宽带片上硅 Mach-Zehnder 调制器探索了滤光器滚降因子对频率间隔为 8.4 GHz 的三线梳的奈奎斯特脉冲的影响。此外，我们表征了集成调制器，并将正弦形奈奎斯特脉冲质量与最近报道的作品进行了比较。