YOEC Leads Breakthroughs in Deep-Sea Fiber Optic Sensing

YOEC Leads Breakthroughs in Deep-Sea Fiber Optic Sensing

China's deep-sea sensor industry has long faced critical bottlenecks, with over 90% of core components for high-end hydrophones relying on imports. The global market for key technologies is dominated by the U.S.-based Company L and Norway's Company A. One of the most critical components of a fiber optic hydrophone is the sensing coil, a tightly wound ring of optical fiber with diameters as small as 10 mm. These coils demand exceptional macro-bending performance, geometric consistency, mechanical stability, and high reliability.

YOEC's Decade-Long Strategic Deployment and Triple Technological Breakthrough

Over the past ten years, Yangtze Optical Electronic Co., Ltd. (YOEC) has steadily expanded into the hydrophone market, leveraging a dual-engine strategy of "specialty optical fiber + intelligent equipment" to achieve three major technological breakthroughs:

Bend-Insensitive Fiber Technology
YOEC independently developed bend-insensitive optical fibers and coating materials suitable for ultra-small bending radii (≤10 mm), exceeding industry limits. These fibers maintain stable signal performance even under high-pressure environments (100 MPa), making them ideal for diverse underwater marine monitoring systems.

Precision Winding Technology
Backed by advanced precision winding capabilities, YOEC achieved mass production of both sensing coils and delay coils in 2023, creating a robust and scalable supply capability to support national aerospace and maritime initiatives.

Fully Localized Industrial Chain
By mastering core technologies and owning proprietary IP across preform fabrication, fiber drawing, precision coil winding, and intelligent equipment development, YOEC has built a miniaturized industrial chain-from preform to smart winding devices-with 100% domestically produced key equipment, successfully breaking Western technology monopolies.

AI-Driven Leap in Production Capacity

As a core supplier of China's 14th Five-Year Plan marine observation network, YOEC has built an integrated industrial ecosystem spanning "coil–fiber–adhesive–module–equipment". The company launched China's first intelligent production line for fiber optic coils, featuring:

AI Quality Inspection System
Powered by advanced AI algorithms, the system identifies micron-level defects-tripling industry-standard precision-and improves inspection efficiency by 80% compared to traditional methods.

Flexible Intelligent Manufacturing Platform
Featuring sixth-generation automatic winding equipment, this platform supports rapid switching between product specifications and delivers customized orders within 48 hours.

Smart O&M System
Based on vibration sensing and equipment health models, the predictive maintenance system reduces unplanned downtime by 65% for key winding machines.

Toward Full-Scale Localization of Hydrophone Coils by 2025

By 2025, YOEC will complete the full domestic industrialization of sensing and delay coils for hydrophones, achieving production capacity sufficient for critical fields such as marine monitoring and fiber optic gyroscopes.

Deep-Sea Strategy: YOEC at the Forefront of Underwater Sensing
The 2025 Chinese Government Work Report for the first time designates "Deep-Sea Technology" as a strategic emerging industry, marking a shift from marine resource exploitation to comprehensive undersea situational awareness. As a key enabler, fiber optic hydrophones-"the strategic eye" of underwater sensing systems-are seeing exponential growth, ushering in a trillion-yuan market.

YOEC holds multiple competitive advantages in this emerging blue ocean:

Breakthrough Technologies
In 2024, YOEC achieved mass production of both sensing and delay coils. Its bend-insensitive fiber technology has overcome challenges posed by deep-sea high-pressure and complex current environments. These products are now integrated into various autonomous underwater vehicles (AUVs) and fixed observation nodes, actively supporting marine observation and resource exploration in the South and East China Seas.

Complete Localization
Based on its micro industrial chain from "coil–fiber–adhesive–module–equipment", YOEC achieves 100% localization of core technologies from fiber preforms to key devices. As one of the few domestic suppliers capable of delivering end-to-end solutions, YOEC has broken through two decades of technical blockade by U.S. and Japanese firms.

High Product Reliability
YOEC's polarization-maintaining fibers are part of major national equipment programs and have passed rigorous reliability certifications. Its hydrophone products are already embedded in new-generation underwater sonar systems and shore-based anti-submarine networks.

Strategic Ecosystem Positioning
Through close cooperation with top national research institutions, YOEC ensures large-scale deployment of hydrophones. The company has established a complete capability loop from core components to integrated systems and scenario-based solutions, playing a key role in China's major seabed monitoring initiatives.

"Power Toward the Sea, Mission in Hand"

Under the policy momentum of China's upgraded maritime strategy, YOEC is tightly aligned with the national vision of becoming a "Maritime Power." Guided by a dual strategy of "technological leadership + ecosystem co-creation," YOEC is using fiber optic hydrophones as a springboard to drive a broader transformation of deep-sea information sensing systems. The company is evolving from a single-product leader to a comprehensive supplier of intelligent marine sensing systems.

As China accelerates the construction of its "Smart Ocean" project, YOEC's deep technological foundation and integrated industrial ecosystem may well give rise to a "Chinese version of the Undersea Starlink"-safeguarding maritime security, unlocking strategic resources, and offering solutions for global ocean governance.