Optical fiber has been widely used as a transmission media for data communica-tion networks for many years. However, considering the broad advantages offered by fiber optics, research projects in this area go beyond data transmission; among the topics that can be found in this field are photonic sensors.Some characteristics decisive now in pro-moting the research of photonic sensors are the unique advantages that they offer, such as immunity to electromagnetic in-terference, its low weight and volume, and long lifetime, among others.This paper presents the design and analy-sis of a distributed optical sensors network using the largest network topology in the country, called the National Optical Fiber Project (PNFO).