Multichannel 16-QAM Single-Sideband Transmission and Kramers–Kronig Detection Using a Single QD-MLL as the Light Source

作者：Mustafa Al-Qadi, Charles Laperle, D. Charlton, Maurice O’Sullivan, Chongjin Xie, Rongqing Hui · 发表于：Journal of Lightwave Technology · 年份：2020 · DOI：10.1109/jlt.2020.3011863 · 被引用次数：6 · 研究领域：Optical Network Technologies、Advanced Fiber Laser Technologies、Advanced Photonic Communication Systems

A 12-channel single-sideband transmission of 16-QAM signals at 18 GBd is experimentally demonstrated for the first time using a single quantum-dot mode-locked laser (QD-MLL) as the light source for both the modulated carriers and the continuous wave components. The Kramers-Kronig field reconstruction algorithm was used at the direct detection receiver for signal-signal beat interference cancellation. A total net data rate of >800 Gb/s is achieved over 78 km fiber of 1680 ps/nm accumulated chromatic dispersion with BER ≤ 2 × 10-3, which is lower than the threshold of hard-decision FEC with 7% overhead. Numerical simulations were also performed to assess the impact of noises from the laser source and the receiver front-end on the system performance.