Top 7 China Optical Communication Companies 2025
China's optical communication market reached RMB 200 billion in 2025, driven by 5G backhaul, data center interconnect, and AI computing cluster requirements. China produces 60%+ of global optical fiber and is the world's largest market for optical transceivers. The rise of 800G and 1.6T optical modules for AI data center networking has created significant growth opportunities for Chinese optical component manufacturers.
TL;DR: China's optical communication market reaches RMB 200B with 60%+ global fiber production. Zhongji Innolight leads 800G optical modules for AI data centers while Accelink Technologies supplies 40%+ of China's telecom optical modules.
Top Companies
Zhongji Innolight (中际旭创)
800G module world leaderZhongji Innolight is the world's leading manufacturer of high-speed optical transceivers, supplying 800G DR8/2xFR4 modules for AI data center networking. Its modules are used by NVIDIA, Google, Microsoft, and major Chinese cloud providers, with 40%+ global 800G module market share.
Accelink Technologies (光迅科技)
China telecom module leaderAccelink is China's largest optical component and module manufacturer for telecom applications, supplying 40%+ of China's carrier-grade optical modules. It produces 10G-800G modules and optical amplifiers for 5G, metro, and long-haul networks, serving China Telecom, China Mobile, and China Unicom.
FiberHome (烽火通信)
Full-stack optical networkingFiberHome is one of China's leading optical networking equipment providers, offering optical transport systems, fiber cables, and data communication products. It holds significant market share in China's metro and access optical networks, with annual revenue exceeding RMB 30 billion.
Eoptolink (新易盛)
Data center optical modulesEoptolink specializes in high-speed optical transceivers for data center and telecom applications, producing 100G-800G modules. Its products serve hyperscale data centers and telecom operators, with growing exports to North American and European markets.
Huagong Tech (华工科技)
Optoelectronics integrationHuagong Technology, spun off from Huazhong University of Science and Technology, produces optical modules, sensor products, and laser equipment. Its optoelectronics division supplies 25G-400G modules for data center and 5G applications, with strengths in vertical integration from chip to module.
YOFC (长飞光纤)
World's largest fiber makerYangtze Optical Fibre and Cable (YOFC) is the world's largest optical fiber preform and fiber manufacturer, producing 30%+ of global fiber output. Its products span single-mode, multi-mode, and specialty fibers for telecom, data center, and industrial applications.
Hisense Broadband (海信宽带)
Access optical leaderHisense Broadband Multimedia specializes in optical access modules and components, including PON (GPON/XGS-PON) modules for fiber-to-the-home networks. It is a leading supplier of optical access components to China's telecom operators and is expanding into data center 400G/800G modules.
Comparison Table
| Company | Core Product | Speed Range | Key Market | Global Position |
|---|---|---|---|---|
| Zhongji Innolight | High-speed transceivers | 100G-800G | Data center/AI | World #1 in 800G |
| Accelink | Telecom modules | 10G-800G | Telecom/5G | China telecom #1 |
| FiberHome | Optical networking | Full-stack | Carrier networks | China top 3 |
| Eoptolink | DC transceivers | 100G-800G | Data center | Global top 5 |
| Huagong Tech | Optoelectronics | 25G-400G | DC + 5G | China top 5 |
| YOFC | Optical fiber | Full range | Telecom, DC | World #1 fiber |
| Hisense Broadband | Access optics | PON modules | FTTH | China access leader |
Frequently Asked Questions
How dominant is China in optical fiber production?
China produces 60%+ of global optical fiber, with YOFC alone accounting for 30%+ of world output. Chinese fiber companies (YOFC, FiberHome, Hengtong) collectively supply 50%+ of global demand, driven by China's massive 5G and FTTH deployment consuming 200M+ fiber km annually.
What is driving 800G optical module demand?
800G optical modules are driven by AI training cluster networking (NVIDIA DGX SuperPOD connectivity), cloud data center upgrades, and 5G backhaul densification. Each NVIDIA DGX SuperPOD requires thousands of 800G modules, creating a multi-billion dollar market opportunity that Chinese manufacturers lead globally.
Which Chinese companies lead in 800G modules?
Zhongji Innolight is the global leader with 40%+ 800G module market share, followed by Eoptolink and Huagong Tech. Accelink focuses on telecom-grade 800G. These companies benefit from vertical integration with Chinese silicon photonics chip suppliers like Silicon Photonics (硅光集成).
What is the outlook for 1.6T optical modules?
1.6T optical modules are expected to enter mass production in 2025-2026, driven by next-generation AI training clusters. Chinese companies including Zhongji Innolight and Eoptolink are developing 1.6T solutions using silicon photonics and co-packaged optics (CPO) technology.
How does China's optical communication supply chain work?
China has a comprehensive optical communication supply chain: optical chip design (Accelink, Huagong), chip manufacturing (Vertically integrated), module assembly (Zhongji, Eoptolink), fiber/cable (YOFC, FiberHome), and system equipment (FiberHome, Huawei, ZTE). Vertical integration gives Chinese companies cost advantages.