Fiber Optic Pressure Sensor (IMAGE) Optica Caption Researchers developed an extremely sensitive miniaturized optical fiber sensor that can measure small pressure changes. Adding a side hole that runs parallel to the fiber core enhanced the pressure measurement and accuracy. Credit Xin Cheng, The Hong Kong Polytechnic University 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.