Abstract
We will present the design, growth, fabrication, electronic control and packaging of the InAs/InP quantum dot (QD) multi-wavelength lasers (MWLs) developed by AEP of NRC in Canada. Their key technical specifications include L-I-V curves, optical and RF beating spectra, relative intensity noise (RIN), and optical phase noise of each individual wavelength channel, as well as timing jitter are investigated. Data bandwidth transmission capacity of 5.376 Tbit/s and 10.3 Tbit/s respectively in the PAM-4 and 16-QAM modulation formats are demonstrated by only using a single QD MWL chip. We have also developed a novel monolithic InAs/InP QD dual-wavelength (DW) DFB laser as a compact optical beat source to generate millimeter-wave (MMW) signals. Because of using a 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 1Gbaud (2Gbps) 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.
Highlights
As worldwide data traffic continues to grow, it becomes urgent to utilize communication resources optimally, facilitating capacity growth at reduced energy consumption
In recent years we have successfully developed InAs/InP Quantum dot (QD) multi-wavelength lasers (MWLs) with repetition rates from 10 GHz to 437 GHz and a total output power up to 50 mW per facet at room temperature [1,2,3,4,5]
In this paper we give an overview of the performance of the QD MWLs and their applications in Terabit/s optical communication links and 5G wireless networks
Summary
As worldwide data traffic continues to grow, it becomes urgent to utilize communication resources optimally, facilitating capacity growth at reduced energy consumption. Quantum dot (QD) semiconductor multi-wavelength lasers (MWLs) are promising light sources for Terabit/s denseWDM optical coherent networks, optical signal processing and millimeter wave (MMW) generation because of many unique advantages as compared with quantum well (QW) and bulk semiconductor materials [1].
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