Fiber-optic distributed acoustic sensor (DAS) and distributed temperature sensor (DTS) are considered important for many applications. It is challenging to design a hybrid DAS-DTS system using the same optical fiber because the operation principles of the two sensors are different. In this talk, we summarize the concept of using the widespread standard multimode fiber (MMF) for simultaneous distributed acoustic and temperature sensing. In particular, we operate the MMF in a quasi-single-mode (QSM) state to simultaneously fulfill the functional requirements of the DAS and DTS. This technique is significant for many industrial applications because it efficiently tackles a long-standing issue in practical implementation.
Islam Ashry is a Research Scientist at Photonics Laboratory, KAUST. He received his BSc and MSc degrees from the University of Alexandria, Egypt, in 2003 and 2007, respectively, and the Ph.D. degree from Virginia Tech, VA, USA, in December 2012. His research interests include optical sensors, fluorescence dynamics, nanopatterning, plasmon sensing, nonlinear optics, fiber optics, optical communications, optical networks, and polymeric thin films. Before joining KAUST, Islam Ashry was a Senior Research Associate at Virginia Tech.