Polarization Beat Length (IMAGE) Moscow Institute of Physics and Technology Caption The polarization beat length (the violet curve on the left axis) and the outer cladding diameter (the red curve on the right axis) along the length of the fiber samples. Credit MIPT Press Office 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.