<i>Optica</i> Inaugural Issue Cover (IMAGE) Optica Caption This is the first issue cover of The Optical Society's new open-access journal Optica. The image shows optical microresonators on a silicon wafer. Devices similar to these were used to make the microcomb optical clock described in paper: "A microresonator frequency comb optical clock," Optica 1, 10-14 (2014). Credit Inset image credit: Kerry Vahala, Caltech. Cover credit: The Optical Society (OSA). 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.