Amidst the rapid advancement of artificial intelligence and high-performance computing, information transmission and processing technologies confront formidable challenges. Responding to these demands, silicon photonics integration technology has emerged. Leveraging CMOS technology, it integrates discrete optical system components with microelectronic chips onto a silicon substrate, facilitating the synergistic control of photons and electrons. This technology has emerged as a pivotal technology in the post-Moore era. Within this realm, silicon-based quantum dot lasers, serving as the cornerstone light source for silicon photonics monolithic integration, are fabricated on off-cut silicon substrates through heteroepitaxial technology. Currently, FP lasers, DFB lasers, microring lasers, among others, have been reported. However, research into compact and cost-effective directly modulated lasers remains insufficient.