Underwater Optical Wireless Communication

Ferromagnetic Object Detector/Magnetometer

 

Underwater optical wireless communication system enables high-speed wireless communication with visible light.
Our devices offer larger amount of data communication than conventional acoustic communication, and contributes to Offshore IoT development.

Line up

Underwater Optical Wireless Communication

Technology

Existing wireless communication devices use acoustic wave, but the data transmission speed is not high enough as its’ maximum speed being several tens kbps. As electromagnetic waves used for network on land attenuates significantly in water, it was not applicable in underwater environment. So, until today, you have to bring underwater vehicles up to the dispatching vessel to collect large amount of data such as scanned images and HD videos. Underwater Optical Wireless Communication modem “MC series” enables tens Mbps speed and full-duplex communication by using less attenuating wavelength optical laser (blue and green visible lights) based on laser diode technologies. 

Movie

Shimadzu had participated in Nippon Foundation-DeepStar Joint Ocean Innovation R&D Program with Underwater Optical Wireless Communication Technology. The project was successfully completed in August 2020.
In the project, the communication test between a prototype of "Station" that created a hemispherical optical wireless communication area around the pool floor and underwater vehicle (ROV) which carried an Underwater Optical Wireless Modem was conducted.In the communication test, the camera image captured by the "Station" was transmitted to the ROV via optical wireless communication, and succeeded in transmitting the camera image without interruption even if the ROV moved freely in the pool. The area where the ROV could be controlled was almost the entire pool. The Underwater Optical Wireless Modem on ROV is "MC100", off-the-shelf product of Shimadzu.
By bringing this technology into use, we will contribute to reducing. OPEX and CO2 emissions through latency free wireless control of underwater vehicles with high-speed data exchange between underwater vehicles and their command and control via and subsea assets.