Kyocera Announces Breakthrough in Underwater Wireless Optical Communication: Data Speeds up to 5.2Gbps*

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Kyocera's Ultra High-Speed Underwater Wireless Optical Communication Technology

Development Background
The world beneath the waves is rapidly transforming. Today, autonomous underwater vehicles (AUVs) and drones are redefining marine surveys, structural inspections, and resource exploration. Yet, mainstream audio communications for these frontiers of discovery face a major bottleneck: their speed. Capped at just a few Mbps, slow transmission restricts instantaneous sharing of high-resolution video and big data. Determined to overcome these limits, Kyocera has propelled research and development of specialized UWOC, achieving a remarkable 5.2Gbps transmission in a freshwater laboratory setting.
*In short-range underwater optical wireless communication (based on Kyocera’s research: November 11, 2025)

Features of Kyocera’s Ultra High-Speed UWOC Technology

• Development of a Proprietary PHY (Physical) Layer
  Imagine converting streams of digital data into beams of laser light—this is the core mission of the PHY (physical) layer in underwater wireless optical communication. Unlike standard specifications, which draw heavily on wired and general wireless technologies and often falter underwater, Kyocera’s original communication standards provide stability and capacity for underwater data transfer. With advanced, high-speed systems custom-tailored to the challenges of underwater environments, Kyocera enables reliable, large-scale transmission even in the most demanding settings.

• Successful Expansion of Underwater Bandwidth to 1 GHz
  By applying Kyocera’s original communication specifications, the company developed an optical front-end circuit with a wide bandwidth exceeding 1 GHz that fully leverages the bandwidth characteristics of optical semiconductor components. This characteristic enables users to transmit significantly more information in the same timeframe, making activities such as live underwater video streaming, sensor data transfer, and collaborative inspections much faster and more reliable. This process achieves a data transfer speed approximately 2.5 times* that of conventional underwater optical communications, allowing critical data to be accessed and shared almost instantly.

Future Developments
Kyocera’s technology has the potential to be used across a wide range of fields, including real-time sharing of high-definition video from AUVs, high-precision inspection of underwater structures, immediate acquisition of large-volume data in ocean research, and simultaneous data collection from multiple underwater sensors. Users benefit from rapid, uninterrupted data transmission, enabling underwater tasks to be more efficient and responsive. Future development to increase communication distance and capacity could accelerate technological innovation in the marine industry and academic research and contribute to the construction of next-generation marine ICT infrastructure.

Featured Technology at CES 2026
This technology will be exhibited at one of the world's largest trade shows, CES 2026, held in Las Vegas, Nevada, USA, January 6 -9, 2026 (local time). Kyocera’s latest innovations in AI-Based Depth Sensors, Millimeter-Wave Sensors, Phased Array Antenna Modules, and other technologies to support safe, autonomous driving will be showcased at Kyocera’s booth #6501, West Hall.

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