Kyocera Corporation (President: Hideo Tanimoto; “Kyocera”) announced today that it has successfully demonstrated a Submarine Wireless Optical Communications (UWOC) technology capable of short-range data transmission at 5.2 Gbps, one of the highest speeds ever achieved in fiber-free UWOC. This new development could enable real-time transmission of large volumes of data for ocean exploration and the operation of underwater robots, providing immediate access to high-resolution images, live video, and sensor data, and significantly improving the efficiency of underwater research and robotic control.
Background to Development:
The underwater world is undergoing rapid transformation. Today, autonomous underwater vehicles (AUVs) and drones are redefining structural inspections, marine surveys, and resource exploration. However, traditional acoustic communications used in underwater environments have a key limitation: speed. Limited to only a few Mbps, these technologies hinder the instantaneous transmission of high-resolution video and large volumes of data.
To overcome these barriers, Kyocera spearheaded the development of specialized UWOC technologies, achieving a transmission speed of 5.2 Gbps in a freshwater laboratory environment, marking a milestone in underwater communications.
Features of Kyocera's Ultra-Fast UWOC Technology
● Development of a Proprietary Physical Layer (PHY)
The physical layer (PHY) is responsible for converting digital data into laser beams for underwater transmission. Unlike conventional standards, which rely on general wired or wireless technologies and have limitations underwater, Kyocera has developed its own communication standards optimized for underwater environments. These enable stable, reliable, and high-capacity data transmission even under demanding conditions.
● Successful Expansion of Underwater Bandwidth to 1 GHz
By applying its original communication specifications, Kyocera developed a front-end optical circuit with a bandwidth exceeding 1 GHz, taking full advantage of the characteristics of optical semiconductors. This allows for the transmission of significantly more information in the same amount of time, facilitating live underwater video streaming, sensor data transfer, and collaborative inspections. The result is a transmission speed approximately 2.5 times faster than conventional UWOC technologies.
Future Developments:
Kyocera's technology has potential applications in multiple fields, including real-time transmission of high-definition video from AUVs, precise inspection of underwater infrastructure, immediate collection of large volumes of oceanographic data, and simultaneous acquisition of information from multiple underwater sensors.
With future improvements in range and communication capabilities, this technology could accelerate innovation in the marine industry and academic research, as well as contribute to the development of next-generation marine ICT infrastructure.
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