Dark fiber under SMU (IMAGE) Southern Methodist University Caption Underneath SMU’s well-groomed lawns and red brick buildings are thousands of unused fiber optic cable – “dark fiber” – earmarked for future use. Working with SMU’s Office of Information Technology, Sharma and Arrowsmith are exploiting imperfections in the communication fibers to detect seismic vibrations, both near and far. Credit SMU Usage Restrictions None License Original 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.