Exceptional Surface-Based Sensor (IMAGE) Michigan Technological University Caption An exceptional surface-based sensor. The microring resonator is coupled to a waveguide with an end mirror that partially reflects light, which in turn enhances the sensitivity. Credit Ramy El-Ganainy and Qi Zhong Usage Restrictions Please credit graphic creators. 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.