We report on the design, growth, fabrication, and performance of InAs/InP quantum dash (QD) multi-wavelength lasers (MWLs) developed by the National Research Council (NRC) Canada. The key technical specifications investigated include optical and RF beating spectra, relative intensity noise (RIN), and optical phase noise of each individual wavelength channel. Data bandwidth transmission capacity of 5.376 Tbit/s and 10.8 Tbit/s respectively in the PAM-4 and 16-QAM modulation formats are demonstrated using only a single C-band QD 34.2-GHz MWL chip. We have also developed a monolithic InAs/InP QD dual-wavelength (DW) DFB laser as a compact optical beat source to generate millimeter-wave (MMW) signals. Due to the common cavity, highly coherent and correlated optical modes with optical linewidth as low as 15.83 kHz, spectrally pure MMW signals around 46.8 GHz with a linewidth down to 26.1 kHz were experimentally demonstrated. By using this QD DW-DFB laser, a one GBaud (2 Gbps) MMW over-fiber transmission link is demonstrated with PAM-4 signals. The results show that the demonstrated device is suitable for high speed high capacity MMW fiber-wireless integrated fronthaul of 5G networks.

中文翻译：

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用于 Tbit/s 相干通信和 5G 无线网络的 Quantum dash 多波长激光器

我们报告了由加拿大国家研究委员会 (NRC) 开发的 InAs/InP 量子冲刺 (QD) 多波长激光器 (MWL) 的设计、生长、制造和性能。研究的关键技术规格包括每个单独波长通道的光和射频拍频、相对强度噪声 (RIN) 和光相位噪声。仅使用单个 C 波段 QD 34.2-GHz MWL 芯片演示了 PAM-4 和 16-QAM 调制格式中分别为 5.376 Tbit/s 和 10.8 Tbit/s 的数据带宽传输能力。我们还开发了单片 InAs/InP QD 双波长 (DW) DFB 激光器，作为紧凑型光学拍频源来生成毫米波 (MMW) 信号。由于共腔、高度相干和相关的光模，光线宽低至 15.83 kHz，光谱纯 MMW 信号约为 46。实验证明了 8 GHz 线宽低至 26.1 kHz。通过使用这种 QD DW-DFB 激光器，可以使用 PAM-4 信号演示 1 GBaud (2 Gbps) MMW 光纤传输链路。结果表明，所演示的设备适用于5G网络的高速大容量MMW光纤无线一体化前传。