Invention:
This invention describes a free-space optical communications architecture that enables robust and high-speed data links while maintaining security and strengthening resistance to eavesdropping. The technology utilizes mode-hopping through spectral, spatial, and temporal modes of a light beam while maintaining high bandwidth and multi-user operation of the optical link.
Background:
The popularity of free-space optical communication links has grown significantly over the past two decades, driven by the demand for faster and more secure communication technologies. Free-space optical communications transmit data by modulating light beams (such as lasers) through the atmosphere or space without a physical fiber, while offering fiber-like data rates and high security. It is attractive for applications such as inter-satellite crosslinks, space-to-ground communication, and secure military networks. Challenges such as atmospheric turbulence, scattering, absorption, and misalignment limit the performance and reliability of free-space optical systems, creating a strong need for further innovation in the field.
Applications:
- Satellite communications
- Military ground communications
- Backhaul for cellular networks
- Metro city communications
- Ship-to-shore communication
Advantages:
