硅光模块行业深度报告：AI驱动高成长，从物理结构和产业链视角拆解硅光投资机会

Investment Rating - The industry investment rating is "Overweight" and has been maintained from the previous rating [11]. Core Insights - The report highlights that the silicon photonics module industry is experiencing high growth driven by increasing AI computing power demands and the advantages of silicon photonics technology, such as high integration, low energy consumption, and cost-effectiveness [7][10]. - The report identifies a shift in the industry towards silicon photonics as a key supply supplement due to shortages in EML raw materials, indicating a growing acceptance of silicon photonics solutions among end customers [27][28]. Summary by Sections Silicon Photonics Technology Overview, Industry Rhythm, and Development Trends - Silicon photonics technology utilizes silicon as the optical medium and is compatible with CMOS processes to manufacture photonic and optoelectronic devices, enabling applications in optical communication and computing [7][16]. - The current stage of silicon photonics technology is focused on integration and application, with future trends pointing towards higher speeds, greater integration, advanced packaging, and broader application fields [29]. Breakdown of Silicon Photonics Principles and Structural Components - Key components include: 1. Lasers: External CW lasers are the mainstream solution, with heterogeneous bonding technology expected to become prevalent for on-chip lasers [8]. 2. Modulators: Silicon-based substrates are predominant, with MZM being the mainstream solution [8]. 3. Detectors: Silicon-germanium detectors are the mainstream solution [8]. 4. Other passive devices include multiplexers and resonators [8]. Analysis of the Silicon Photonics Module Industry Chain - The industry chain is divided into three segments: 1. Upstream: Core materials, including silicon photonic chips, with design led by North American firms and manufacturing concentrated among a few foundries [9]. 2. Midstream: Module packaging, with leading companies closely collaborating with clients and maintaining high market shares [9]. 3. Downstream: System integrators or end customers [9]. Investment Recommendations - Companies that lead in the mass production of silicon photonics modules are expected to enjoy high margins and benefit from market share consolidation [10]. - Key areas of focus include: 1. Silicon photonic chip design: Companies like Zhongji Xuchuang and Xinyi Sheng are recommended for their strategic positioning [10]. 2. Substrate and epitaxy: Companies like Sumitomo Electric and AXT are highlighted for their roles in material supply [10]. 3. Silicon photonic wafer foundries: Tower Semiconductor, GlobalFoundries, TSMC, and SMIC are noted for their capacity and expansion potential [10]. 4. CW light sources: Companies like Yuanjie Technology and Shijia Photonics are recommended due to supply-demand mismatches [10]. 5. Silicon photonic modules: Companies like Zhongji Xuchuang, Xinyi Sheng, Cambridge Technology, Tianfu Communication, and Guangxun Technology are highlighted for their technological leadership [10].