Switching Circuits (IMAGE) Optica Caption The researchers developed a method for making configurable silicon photonics circuits. They used it to fabricate a 1 X 4 programmable photonic switching circuit that produces an output at one of four ports (P1-P4) (a) and a 2 X 2 photonic switching circuit with two output ports (P1, P2) (b). Credit Xia Chen, University of Southampton Usage Restrictions None License Licensed content 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.