Quantum dash multi-wavelength lasers for Tbit/s coherent communications and 5G wireless networks

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