6G • Spectrum
FSO
Free-Space Optical Laser Backhaul
High-power collimated laser beams transmitted through the open air to provide terabit-rate point-to-point wireless connectivity over kilometers.
Technical Explanation
Free-Space Optics (FSO) uses infrared laser diodes (typically 1550 nm eye-safe wavelengths) focused into razor-thin optical beams. In 6G, FSO connects cell towers across urban rooftops, links ground stations to high-altitude platform aircraft (HAPS), and forms the inter-satellite laser mesh in orbit, delivering 100 Gbps to 10 Tbps bandwidth per laser beam with zero licensing fees and zero RF interference.
Key Functions
- Collimated laser beam transmission delivering 100+ Gbps per optical channel
- License-free spectrum with completely unregulated global deployment
- Essential backhaul link connecting high-altitude platforms (HAPS) and LEO satellites
- Automatic beam tracking and motorized gimbal stabilization compensating for building sway
- Adaptive optics and multi-beam diversity mitigating atmospheric fog and thermal turbulence
Specifications
ITU-T G.640, CCSDS Space Optical Communications Standards
Interfaces
FSO-Laser-LinkOpto-Gimbal
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