OAM Modulation for Channel Capacity

The patent introduces orbital angular momentum (OAM) as a new dimension for signal multiplexing. By applying different OAM modes (represented by different topological charges or helical phases) to multiple data streams, the system can transmit multiple signals simultaneously over a single wavelength without requiring additional channels or increasing transmission speed. This dimensional approach to signal separation resolves the contradiction by increasing channel capacity through a new degree of freedom rather than through traditional means that increase system complexity.

The patent enables a single communication channel to perform multiple functions by multiplexing multiple data streams using different OAM modes. Instead of requiring separate physical channels for each user or data stream, the system makes the existing channel universal by allowing it to carry multiple simultaneous signals that are separated at the receiver based on their OAM characteristics. This resolves the contradiction by improving channel availability without proportionally increasing infrastructure complexity.

The patent segments the signal space by assigning different OAM modes to different data streams. Each OAM mode represents a distinct segment in the angular momentum domain, allowing multiple signals to be transmitted simultaneously without interfering with each other. This segmentation approach enables increased throughput through multiplexing while maintaining signal integrity, as each segmented signal can be independently detected and decoded at the receiver based on its unique OAM signature.