High-Bandwidth, Omni-Directional Underwater Optical Communications
TechnologyHigh-Bandwidth, Omni-Directional Underwater Optical Communications
Inventor(s)Farr; Norman E. Farr, Lee Freitag, James Preisig, Dana R. Yoerger, Sheri N. White, Alan D. Chave
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OverviewOptical communication underwater has advantages and disadvantages relative to acoustic communication. Acoustic signals travel long distances but optical systems, although limited in distance to a few hundred meters, can carry significantly more information. New developments in light emitting diodes (LEDs) have made omnidirectional underwater communication practical.
DescriptionThe invention provides improved underwater communication using underwater optical modems including optical transmitters and optical receivers that allow omnidirectional transmission and reception of optical signals over distances of approximately100 m at data rates greater than 1 Mbit/s. The invention also provides for underwater communication networks having a plurality of optical modems communicating with each other.
- Diver-to-diver underwater communication
- Sensor to mooring data communication
- Through air-water interface communications
- Communication between sensors, ships and/or underwater vehicles
- High data rates relative to acoustic communications
- Silent (covert) communications underwater
- Communication link over 100 meters without physical hook-up
- Low cost
- Full ocean depth capability
- Operable in noisy environments
Stage of DevelopmentWorking systems are in use for research applications.
Patent NumberUS Patent 20070183782A1
Relevant IndustriesOcean Observation