Nature: Ultra-small and Ultra-fast Electro-optic Modulator (image) Karlsruher Institut für Technologie (KIT) Share Print E-Mail Caption Due to the voltage applied, a beam of light (top left) is modulated by the digital bits (bottom right) of the converter (yellow). An electrical signal is converted into an optical signal. Credit (Graphics: A. Melikyan/KIT) Usage Restrictions None Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.