An analysis of research priorities and evolutionary trends in the field of photonic chips

This paper conduct an in-depth analysis of policy documents and top-tier academic journals from leading countries in the field of photonic chips. Specifically, it examine the funding policies of the United States, Europe, Japan, and China concerning photonic chips. The paper review the current key development issues and significant advancements in photonic chips across four primary research directions: chip design software, materials and devices, metrology and testing, and heterogeneous integration and packaging. Additionally, it provide a concise overview of the main development trends. By analyzing the global competitive landscape, key development directions, and major trends in the field of photonic chips, the paper aims to serve as an informational reference for managers, policymakers, and researchers in this domain.