Core Viewpoint - Changfei Optical Fiber (601869) and its cable segment saw a significant stock price increase, attributed to advancements in optical fiber technology and growing demand driven by AI computing needs [1] Company Summary - Changfei Optical Fiber's stock rose over 8% during trading, closing at 36.2 HKD with a transaction volume of 554 million HKD [1] - The company is positioned to benefit from the advancements in hollow-core fiber technology, which is expected to be a strategic growth lever [1] Industry Summary - China Telecom (601728) achieved a milestone by successfully completing the world's first transmission experiment using hollow-core fiber over a distance exceeding 100 kilometers, setting a new record in the field [1] - The experiment's four core indicators reached globally leading levels, indicating significant progress in quantum-classical co-transmission technology [1] - According to Zhongtai Securities (600918), the explosion of AI computing power demand in 2025 will be a key driver for optical fiber demand, with data centers transitioning to 800G/1.6T networks [1] - UBS highlighted the long-term development potential of hollow-core fiber, predicting that technology will mature over the next 2-3 years, contributing significantly to revenue, although short-term profit impacts remain limited [1]

Core Insights - China Telecom has successfully completed the world's first transmission experiment using hollow-core optical fibers over a distance exceeding 100 kilometers, marking a significant breakthrough in quantum-classical co-fiber transmission technology [1] Group 1: Technological Breakthrough - The experiment represents a milestone in the field of quantum-classical co-fiber transmission, addressing a critical bottleneck for the large-scale deployment of quantum communication [1] - The research team introduced innovative mechanisms such as spectrum collaborative allocation and multi-source crosstalk suppression strategies, enabling efficient and stable co-fiber transmission of quantum and classical signals [1] Group 2: Industry Implications - The successful transmission resolves the industry challenge of interference between quantum and classical signals in traditional solid-core fibers, which complicates the balance between security and capacity [1] - The new system offers comprehensive advantages including low noise, high security, large capacity, and low complexity, paving the way for the practical application of this technology [1]