最近几个月，光纤价格一直在暴涨。在这个月初的时候，我们就写过光纤的涨价。 北美CSP大厂又来审厂、周末火热的openclaw、涨价的光纤 而且这种涨价不是那种温和的上涨，而是三个月内从 18 块钱涨到 85~120块钱的那种暴涨。更夸张的 是，市场上已经出现了"当日有效制"报价——就是今天报的价，明天就不算数了。这种场景，上一次 出现还是在 2017 年光纤行业的黄金时代。 但这一次，驱动力完全不同。 说明一下，本文中提到的这些价格和数据，都是参考业内公开可查的资料。 一、这三个月发生了什么 先看一下中邮证券的调研数据，感受一下这波涨价有多猛： G.652D （最普通的单模光纤）：从 18 元/芯公里 → 85-120 元/芯公里，涨幅 450-567% G.657. A2 （弯曲不敏感光纤）：从 35 元/芯公里 → 210-230 元/芯公里，涨幅 557% G.654. E （超低损耗光纤）：涨幅更是突破天际 这不是某个地区的个别现象。全球最大的光纤公司康宁（Corning），今年 2 月跟 Meta 签了一个 60 亿美元的长期供应协议。 这里列一下常见的单模光纤的型号和用途。 型号 名称/特性 主要 ...

Core Viewpoints - The report emphasizes the continuous improvement of AI network density and scalability through new products in the optical fiber and cable industry, highlighting investment opportunities in this sector [1][6][13]. Market Review - The communication sector outperformed the CSI 300 index by 4.29 percentage points during the period from March 16 to March 20, 2026, with a sector increase of 2.10% compared to a decrease of 2.19% for the index [17]. - Over the past 30 days, the communication sector rose by 6.2%, significantly outperforming both the ChiNext and CSI 300 indices [18]. - Year-to-date, the communication sector has increased by 8.5%, again outperforming the broader market indices [18]. Industry Data Updates - As of the end of 2025, China had 4.838 million 5G base stations, marking a net increase of 588,000 from the previous year, with 5G stations accounting for 37.6% of all mobile phone base stations [30]. - In January 2026, the domestic smartphone shipment was 22.866 million units, a year-on-year decrease of 16.1%, with 5G smartphones making up 86.9% of total shipments [31]. - The number of mobile IoT terminal users reached 2.888 billion by the end of 2025, with a net increase of 232 million users [33]. Key Company Developments - Corning showcased multi-core fiber and MMC connectors at the OFC 2026, which are expected to enhance data center network density significantly. Their multi-core fiber solution can increase fiber capacity several times while reducing cable quality by up to 70% and installation time by up to 60% [6][14]. - Yangtze Optical Fibre and Cable demonstrated new AI-oriented optical fibers and ultra-high-speed interconnection solutions, including a hollow-core fiber with a length of 91.2 km and a loss of 0.04 dB/km, aimed at future AI computing centers [6][15]. - The report suggests focusing on the optical fiber and cable sector due to improving supply-demand dynamics and the introduction of high-value products, with a recommendation to pay attention to leading companies like Yangtze Optical Fibre, Hengtong Optic-Electric, Zhongtian Technology, and FiberHome [6][15].

Core Insights - The article emphasizes the investment value of key events, industry chain companies, and significant policy interpretations in the telecommunications sector [1] Group 1: Company Highlights - A company is identified as a global core supplier of key components for optical modules, with mature GaN RF chips and SiC power modules supporting optical modules and data centers, expecting continued capacity expansion by 2026 [1] - Another company has achieved large-scale deployment of hollow-core optical fibers in the O-band, with 800G optical modules already in mass production, fully supporting low-latency T-level transmission for intelligent computing centers [1]

Investment Rating - The industry investment rating is "Positive" (maintained) [2] Core Insights - The GTC 2026 conference showcased Nvidia's new Rubin system, which utilizes TSMC's 3nm EUV process and HBM4 memory, significantly enhancing performance and reducing costs [4][12] - The OFC 2026 conference highlighted advancements in AI optical interconnects, with multiple technical paths emerging, indicating a strong trend towards AI optical interconnects [5][16] - The concept of "Token Factory Economics" was introduced, suggesting that tokens will become a new commodity with tiered pricing based on performance, potentially leading to Nvidia's AI chip demand reaching at least $1 trillion by 2027 [15][24] Summary by Sections GTC Conference Highlights - Nvidia introduced seven new chips and five system architectures, with the LPU showing significant performance improvements and a tenfold reduction in token costs [12][13] - The next-generation Feynman architecture was previewed, designed for "world models," featuring a 1.6nm process and substantial performance gains [14] - The commercialization of tokens is anticipated, with Nvidia projecting substantial revenue growth driven by AI chip demand [15] OFC Conference Highlights - The XPO MSA was launched, addressing key bottlenecks in AI data center optical interconnects, with significant improvements in bandwidth density [16][17] - NPO technology was highlighted as a transitional solution for AI interconnects, with major manufacturers releasing high-performance products [18][19] - CPO technology is advancing, with major firms accelerating production and achieving significant energy efficiency improvements [20][21] - OCS technology is moving towards commercial scalability, supported by major tech companies, enhancing AI data center connectivity [22] - Hollow-core fiber technology was showcased, achieving significant reductions in loss and latency, positioning domestic manufacturers as leaders [23] Investment Recommendations - The report recommends focusing on four main investment lines: "Optical, Liquid Cooling, Domestic Computing Power, and Satellite" [6] - Specific recommended stocks include: Zhongji Xuchuang, Xinyi Sheng, Yingweike, and Huagong Technology among others [6][25][26]

Core Viewpoint - The article highlights the emergence of hollow-core optical fiber technology by Yangtze Optical Fibre and Cable (YOFC) as a significant advancement in the AI computing infrastructure, positioning it as a key player in the industry [1][3]. Group 1: Technological Advancements - YOFC's hollow-core optical fiber has achieved a global minimum attenuation of 0.04 dB/km, which is a 31% reduction in latency and a 47% increase in transmission speed compared to traditional solid-core fibers [3][4]. - The technology allows light to transmit through air rather than glass, overcoming material limitations and offering advantages such as low latency, wide spectrum, and low loss [4]. - YOFC has reached a preform drawing length of 91.2 kilometers, laying the groundwork for large-scale commercialization [4]. Group 2: Market Dynamics - The hollow-core fiber technology is gaining attention from major players, with Amazon Web Services (AWS) deploying it to connect ten data centers, and Microsoft planning to deploy 15,000 kilometers of hollow-core fiber in its Azure global network [6][5]. - The optical fiber market has seen a surge, with prices for mainstream single-mode fibers more than doubling, reaching a seven-year high, driven by optimism for optical communication as a replacement for copper cables [6]. Group 3: Financial Performance - YOFC's revenue for the first three quarters of 2025 was 10.275 billion yuan, an 18.18% year-on-year increase, while net profit decreased by 18.02% to 470 million yuan due to profit lag from previous low-price orders [8]. - The company is still in the early stages of hollow-core fiber commercialization, which has not yet significantly impacted its financial performance [8]. Group 4: Strategic Initiatives - YOFC is pursuing its "INFINITE-2030 plan" to promote international standards and collaborate with global telecom operators and cloud service providers on over 50 commercial and pilot projects for hollow-core fiber [8]. - The company aims to balance its technological advancements with market expectations, navigating the challenges of the industry cycle while striving for quality improvements [7][8].

Investment Rating - The report maintains an "Overweight" rating for the communication sector and communication equipment manufacturing [8]. Core Insights - The upcoming GTC and OFC conferences are expected to catalyze developments in the communication sector, particularly in areas such as optical modules, liquid cooling technologies, fiber optics, and copper connections [1][2][11]. - The report emphasizes the importance of AI computing chain investment opportunities, suggesting a focus on companies that are well-positioned in this space [1][2]. Summary by Sections Market Overview - The communication index fell by 0.12% last week, while the Shanghai Composite Index decreased by 0.70%, and the Shenzhen Component Index increased by 0.76% [1][11]. Key Companies and Dynamics - The report identifies a primary investment theme in the communication industry as the AI computing chain, recommending companies such as Zhongji Xuchuang, Xinyi Sheng, and others. It also highlights two secondary themes: core assets (China Mobile, China Telecom) and new productive forces (commercial aerospace, low-altitude economy) [3]. - Specific companies recommended for investment include: - Wolong Huacai (002130 CH) with a target price of 43.21 and a "Buy" rating [34]. - China Telecom (601728 CH) with a target price of 9.11 and a "Buy" rating [34]. - China Mobile (600941 CH) with a target price of 126.20 and a "Buy" rating [34]. - Xinyu Sheng (300502 CH) with a target price of 476.71 and a "Buy" rating [34]. - Arista Networks (ANET US) with a target price of 166.30 and a "Buy" rating [34]. - Zhongji Xuchuang (300308 CH) with a target price of 626.68 and a "Buy" rating [34]. - Ruijie Network (301165 CH) with a target price of 102.51 and a "Buy" rating [34]. - Guanghuan Xinwang (300383 CH) with a target price of 18.87 and an "Overweight" rating [34]. Upcoming Events and Focus Areas - The report suggests monitoring developments in the following areas during the GTC and OFC conferences: 1. Optical modules: Focus on Nvidia's statements regarding CPO technology and the performance of NPO and XPO prototypes [2][12]. 2. Liquid cooling: Attention to advancements in the Feynman generation technology and domestic supply chain progress [2][13]. 3. Fiber optics: Updates on the commercialization of hollow-core fiber technology [2][14]. 4. Copper connections: The potential impact of LPU cabinet forms on the market perception of copper cable lifecycles [2][14].

Investment Rating - The report maintains a "Buy" rating for the optical fiber and cable industry, emphasizing a new upward cycle driven by AI [4]. Core Insights - The current cycle is characterized by a structural change in demand driven by AI and drone applications, leading to a significant increase in optical fiber consumption [2][19]. - The supply side is constrained due to the long production cycle of optical preforms, which takes 18-24 months, resulting in a rigid supply environment [2][14]. - The report highlights the emergence of drones as a new consumption market for optical fibers, transforming them from infrastructure components to consumables [2][44]. Summary by Sections Investment Rating - The report suggests focusing on leading companies in the optical fiber and cable sector, such as Yangtze Optical Fibre and Cable Joint Stock Limited Company (6869.HK), Hengtong Optic-Electric, Zhongtian Technology, and FiberHome Technologies [2]. Demand Dynamics - AI-driven data centers (AIDC) are expected to significantly increase optical fiber demand, with projections indicating that AIDC fiber demand will rise from 5% in 2024 to 30% by 2027 [21][22]. - The demand for optical fibers in AI data centers is projected to reach approximately 53 million core kilometers annually by 2026, driven by the expansion of cloud service providers (CSPs) [22][39]. Supply Constraints - The global optical fiber production capacity is highly concentrated, with over 60% located in China, and new supply is expected to remain scarce due to cautious expansion strategies [2][54]. - The report estimates a supply-demand gap of 6% in 2026, which is expected to widen to 15% by 2027, indicating a tightening market [2][51]. Price Dynamics - The report notes that the current price increases are not merely cyclical but are driven by a fundamental shift in demand and supply constraints, leading to a "supply-demand gap price increase" [19][27]. - The price elasticity of optical fibers is expected to be greater than in previous cycles due to the rigid supply constraints and the inability to quickly respond to demand changes [14][18]. Key Companies - The report identifies key players in the optical fiber and cable industry, including Yangtze Optical Fibre and Cable Joint Stock Limited Company, Hengtong Optic-Electric, Zhongtian Technology, and FiberHome Technologies, as potential investment opportunities [2][8].

Summary of Longfly Optical Fiber Conference Call Company Overview - The conference call focused on Longfly Optical Fiber, specifically the launch of their new hollow core fiber brand, HollowBand®, during MWC Barcelona 2026 [1][2]. Key Points and Arguments - Longfly has achieved a significant milestone with their hollow core fiber, boasting the lowest attenuation globally at 0.04 dB/km, which is a reduction from the previous 0.05 dB/km [3]. - The length of a single hollow core fiber preform has reached 91.2 km, which is expected to accelerate commercialization efforts [3]. - Compared to traditional solid core fibers, the hollow core fibers exhibit a 31% reduction in latency and a 47% increase in transmission speed, with non-linear effects nearly eliminated, making them suitable for long-distance backbone network construction [3]. - The demand for hollow core fibers is particularly strong in North America, driven by AI data centers and drone applications, which are expected to increase fiber demand significantly [4]. - Longfly has established a wholly-owned subsidiary in Singapore to focus on the research and development of hollow core fiber technology and its market promotion, potentially opening up overseas market opportunities [4]. Market Dynamics - The price of G652D fiber increased significantly in February, exceeding 50 yuan per core kilometer, compared to 25 yuan in Q4 2025, indicating a rising trend in fiber prices due to supply-demand mismatches [4]. - Domestic telecom operators are expected to raise prices to meet their network construction needs, as evidenced by the failed bidding in February for telecom procurement, which reflected that the highest price limit could not match market demand [4]. - Longfly's production capacity for optical preforms stands at 4,000 tons, utilizing VAD+OVD and PCVD technologies, allowing for flexible adjustments in the production of single-mode, multi-mode, and specialty optical fibers [4]. Competitive Position - Longfly's exposure to overseas markets is higher than that of its peers, positioning it to benefit from the current price increases [5]. - The company maintains a leading position in multi-mode fiber production, which is primarily used for data center jumpers, with prices ranging from 200 to 1,000 yuan depending on the type [5]. - Longfly holds a 49% stake in Changxin Sheng, which specializes in MPO fiber connectors and AOC, serving major domestic and international CSP manufacturers [5]. - The company is one of the few domestic suppliers capable of directly providing fiber connectors to North America, where there is a shortage of production capacity among overseas connector manufacturers [5]. Additional Insights - Longfly is diversifying its growth points by developing products in various segments, including MPO, AOC, hollow core fibers, and multi-mode fibers, while also exploring opportunities in submarine cables, lasers, quartz, and semiconductors [5]. - The recommendation is to pay attention to the stock during market dips [6].

Investment Rating - The report assigns a rating of "Buy" to the company with a target price of 293.87 CNY [5]. Core Insights - The company is a global leader in the production of optical fiber preforms, optical fibers, and cables, benefiting from breakthroughs in hollow-core fiber research and a surge in demand driven by AI computing power competition [2]. - The company is expected to see revenue growth from 12.91 billion CNY in 2025 to 19.85 billion CNY in 2027, with net profit projected to increase from 764 million CNY to 3.72 billion CNY during the same period [4][12]. - The demand for optical fibers is anticipated to grow significantly, particularly in data center interconnect (DCI) scenarios, with the share of optical fiber demand driven by AI expected to rise from less than 5% in 2024 to 35% by 2027 [11]. Financial Summary - Total revenue is projected to decline by 3.5% in 2023, followed by a further decline of 8.7% in 2024, before rebounding with a growth of 5.9% in 2025 and a substantial increase of 42.8% in 2026 [4]. - Net profit is expected to decrease by 47.9% in 2024 but is forecasted to recover significantly, with a projected increase of 315.9% in 2026 [4]. - The company’s earnings per share (EPS) is expected to rise from 0.82 CNY in 2024 to 4.49 CNY in 2027 [4]. Market Data - The company's market capitalization is approximately 188.99 billion CNY, with a 52-week stock price range of 29.94 CNY to 242.42 CNY [6]. - The company has a total share capital of 828 million shares, with 406 million shares in circulation [6]. Business Overview - The company has established a comprehensive range of optical fiber products and solutions, serving over 100 countries and regions [15]. - The management team has extensive industry experience, contributing to the company's operational efficiency and strategic development [24][25]. - The company has a clear and stable shareholding structure, with major shareholders being state-owned enterprises [20][21].

Core Viewpoint - The rapid development of AI is driving an increased demand for upstream raw materials, leading to a rise in prices for these materials, particularly in the optical fiber market, which has reached a seven-year high with prices exceeding 40 yuan per core kilometer, reflecting an annual increase of over 80% [3][6]. Demand Side - The growth in AI computing power is significantly increasing the demand for high-speed connections within data centers and in non-traditional communication fields, leading to a surge in demand for new types of optical fibers such as multi-mode fibers and G.654.E fibers [6]. - Major tech companies like Microsoft are planning to deploy extensive lengths of hollow-core fiber for their AI data centers, indicating a strong market demand [6]. - The "East Data West Computing" national project in China is expected to generate a concentrated procurement demand for over 3 million core kilometers of ultra-low loss optical fibers by 2025 [6]. Supply Side - The production capacity of optical fibers is constrained by the availability of optical fiber preform rods, which are critical raw materials and represent a bottleneck in the supply chain [7]. - The expansion cycle for optical fiber preform rods is approximately two years, and the industry has seen cautious capital investment since 2019, resulting in a mismatch between supply and demand [7]. - The introduction of hollow-core fibers, which offer advantages such as low latency and low loss, is expected to change the market dynamics, although their high cost remains a barrier [7]. Market Concentration - Domestic manufacturers hold 80% of the global optical fiber preform capacity, enhancing their market power and limiting the expansion of traditional and hollow-core fiber production [8]. - The global optical fiber market is highly concentrated, with the top four manufacturers accounting for over 50% of the market share, and the top ten companies exceeding 90% [8]. Company Highlights - **Changfei Fiber**: A leading global company in the optical fiber industry, expected to reach a production capacity of 100 million core kilometers per year by 2025, benefiting from price increases [12]. - **Hengtong Optic-Electric**: Among the top three in optical fiber communication and submarine cables, with a projected capacity of 95 million core kilometers per year by 2025 [15]. - **ZTT**: A major player with a comprehensive product range and a projected capacity of 90 million core kilometers per year by 2025 [17]. - **FiberHome**: Unique in integrating optical communication systems, with a projected capacity of 85 million core kilometers per year by 2025 [19]. - **Tongding Interconnection**: Established a complete industry chain, with a projected capacity of 75 million core kilometers per year by 2025 [21]. - **Yongding Co., Ltd.**: Recognized as a national champion in fire-resistant communication cables, with a projected capacity of 70 million core kilometers per year by 2025 [23]. - **TeFa Information**: Focused on high-end optical communication products, with a projected capacity of 65 million core kilometers per year by 2025 [25].