We report transmission of $100 \\mathrm{~Gb} / \\mathrm{s}$ PAM4 data using a low-cost high bandwidth directly modulated DFB laser, which has a MQW based DBR feedback section. Clear eye diagrams have ...

Nonlinear distortion is critical for optical communication systems with a high baud rate and a high-order modulation format. Thus, a simple and accurate method to measure the nonlinear distortion is ...