Abstract In this study, we propose and demonstrate a dispersion compensation system for an ultrafast 25.6 Tbps waveform using multilevel 8-ary amplitude and 32-ary phase modulation. The waveform bit period was 312.5 fs, which was controlled and compensated by a 200 GHz optical frequency comb (OFC) synthesizer with a 6.4 THz bandwidth. Dispersion spectra were measured in parallel and simultaneously (within 1 ms), based on single-shot dual-heterodyne mixing by introducing an OFC and arrayed waveguide grating to separate sidebands. An optical pulse synthesizer (OPS) can individually control the phase and amplitude spectra of the OFC. To control transmitted waveforms in a dispersed media, the OPS can be oppositely biased to feed the measured dispersion back into the source waveform when it generates an arbitrary waveform. In this study, a 25.6 Tbps dispersion-free waveform was successfully transmitted through a 10.55 km fiber.

中文翻译：

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使用光频梳合成器/分析器对 25.6 Tbps 波形进行色散预补偿

摘要 在这项研究中，我们提出并演示了一种使用多级 8 进制幅度和 32 进制相位调制的超快 25.6 Tbps 波形色散补偿系统。波形位周期为 312.5 fs，由带宽为 6.4 THz 的 200 GHz 光频梳 (OFC) 合成器控制和补偿。通过引入 OFC 和阵列波导光栅来分离边带，基于单次双外差混合并行和同时（1 毫秒内）测量色散光谱。光脉冲合成器 (OPS) 可以单独控制 OFC 的相位和幅度谱。为了控制分散介质中的传输波形，OPS 可以反向偏置，以便在生成任意波形时将测量的色散反馈回源波形。在这项研究中，25。