How to use limited bandwidth more efficiently? Think like a cave-dwelling fish

For the first time, researchers have demonstrated a light-based device that mimics a fish's incredible jamming avoidance response (JAR) by moving the frequency of an emitted signal away from other signals that could potentially cause interference. The new system could eventually help overcome the spectral bandwidth crunch caused by ever increasing numbers of wireless devices and transmitted data competing for space on a limited amount of available bandwidth.