This post is also available in:
עברית (Hebrew)
Wireless networks are under growing pressure as more devices compete for bandwidth indoors. Offices, homes, and public spaces are increasingly crowded with Wi-Fi and cellular signals, leading to interference, reduced speeds, and higher energy consumption. As demand continues to rise, driven by streaming, cloud services, and connected devices, traditional radio-based systems are approaching their practical limits.
A new approach uses light instead of radio waves to transmit data, offering a way to expand capacity without adding to spectrum congestion. The system is based on optical wireless communication, where infrared light carries information through the air. Because light operates at much higher frequencies than radio, it can support significantly larger data volumes while avoiding interference with existing networks.
According to TechXplore, at the core of the technology is a compact chip containing an array of tiny semiconductor lasers. Each laser can transmit its own data stream independently, allowing multiple signals to be sent in parallel. By combining these streams, the system achieves much higher overall throughput than a single transmitter. In testing, the platform reached aggregate data rates exceeding 360 gigabits per second over a short indoor distance.
To make this practical in real environments, the system includes an optical setup that shapes and directs each beam. A microlens array organizes the light into distinct zones, ensuring that signals remain separated and do not interfere with one another. This makes it possible to serve multiple users simultaneously within the same space, each receiving a dedicated data stream.
Another key advantage is efficiency. The laser-based approach consumes less energy per transmitted bit compared to conventional wireless systems, reducing overall power requirements as data demand grows.
From a defense and homeland security perspective, optical wireless links offer additional benefits. Because light does not penetrate walls and can be tightly directed, communication is inherently more contained and harder to intercept. This makes it suitable for secure indoor environments such as command centers, critical infrastructure facilities, or sensitive operational sites.
Rather than replacing existing networks, this technology is expected to complement them. By offloading high-capacity traffic to optical links, it can help relieve congestion and improve performance in dense indoor environments while supporting more secure and energy-efficient communication.
The research was published here.
