Overview
Distributed fiber optic sensing (DFOS) has emerged as a hot topic in major optical communication conferences and is attracting the attention of operators seeking to improve the functionality and resiliency of their fiber networks while gaining valuable intelligence of their surroundings. DFOS provides a natural way to turn an optical fiber into thousands of sensing elements and monitor environmental perturbations in real-time, making it a cost effective and non-intrusive solution that is being adopted by more industries every year. DFOS can be leveraged for many use cases such as proactive monitoring, fiber cut prevention, environmental sensing, and critical infrastructure protection. This paper will focus on various technical and practical aspects of fiber sensing for access and metropolitan networks.