买不到“光模块”这个纯元，快来看看“通信ETF”这个甄嬛

Core Viewpoint - The artificial intelligence (AI) industry chain is experiencing significant growth, particularly in the optical module sector, which is driving the performance of the communication ETF (515880) [1][8]. Group 1: Market Performance - The communication ETF (515880) has seen a rise of over 100% since its low point on April 9, with a recent increase of more than 5% [1]. - As of August 22, the communication ETF has reached a scale of 6 billion yuan, with a net inflow of over 2.4 billion yuan in the past 20 trading days [1]. - The index of the communication ETF shows that "optical modules, servers, copper connections, and optical fibers" account for over 70% of its composition, reflecting the fundamentals of computing hardware [2]. Group 2: Industry Insights - In North America, the key sectors of focus include PCB, optical modules, and server ODM, with strong market demand leading to an expansion of the industry chain [5]. - The PCB sector is experiencing increased production capacity, with manufacturers showing a willingness to expand due to rising demand and price increases from upstream suppliers [5]. - The optical module sector is expected to see strengthened shipment forecasts for high-end products like 1.6T, with upstream optical chip manufacturers also gaining attention [5]. Group 3: Technological Relevance - The demand for optical modules is driven by the need for high computational power in AI models, which require extensive networking to distribute tasks across multiple GPUs [6][7]. - Optical modules convert electrical signals into optical signals, enabling long-distance transmission essential for large-scale AI server clusters [7]. - The core share of the optical module market is concentrated in mainland China, which plays a crucial role in meeting the demand from North American firms [7][8].