Chan David W U, Wu Xiong, Zhang Zunyue, Lu Chao, Lau Alan Pak Tao, Tsang Hon Ki
Opt Lett. 2022 Jun 1;47(11):2935-2938. doi: 10.1364/OL.460602.
A very-high-bandwidth integrated silicon microring modulator (MRM) designed on a commercial silicon photonics (SiP) platform for C-band operation is presented. The MRM has a 3 dB electro-optic (EO) bandwidth of over 67 GHz and features a small footprint of 24 µm × 70 µm. Using the MRM, we demonstrate intensity modulation-direct detection (IM-DD) transmission with 4-level pulse amplitude modulation (PAM-4) signaling of over 100 Gbaud. By utilizing the optical peaking effect and negative chirp in the MRM, we extend the transmission distance, which is limited by the fiber-dispersion-induced frequency fading. Using a standard single-mode fiber (SSMF) for transmission across distances of up to 2 km, we measured the data transmission of 100 Gbaud PAM-4 signals with a bit error rate (BER) under the general 7% hard-decision forward-error correction (HD-FEC) threshold. The MRM enables an extended transmission distance for 100 Gbaud signaling in the C-band without dispersion compensation.
本文介绍了一种基于商用硅光子学（SiP）平台设计的、用于C波段运行的超高带宽集成硅微环调制器（MRM）。该MRM的3分贝电光（EO）带宽超过67吉赫兹，且具有24微米×70微米的小尺寸。利用该MRM，我们展示了超过100波特的4电平脉冲幅度调制（PAM-4）信号的强度调制直接检测（IM-DD）传输。通过利用MRM中的光学峰值效应和负啁啾，我们扩展了受光纤色散引起的频率衰落限制的传输距离。使用标准单模光纤（SSMF）在长达2公里的距离上进行传输，我们测量了在通用7%硬判决前向纠错（HD-FEC）阈值下100波特PAM-4信号的数据传输。该MRM在无需色散补偿的情况下，实现了C波段中100波特信号的扩展传输距离。
