IEC 62148-22: 2023 defines the physical dimensions and interface specifications for directly modulated laser (DML) devices used in optical telecommunication and optical data transmission applications. The influence of the quasi-high-pass filter properties of the SOA on the bandwidth was explored, resulting in high optical power output. PICWave's active model can give important insights into the dynamics of active devices, such as lasers and SOAs. This article provides a brief introduction to both.