Датчики контроля безопасности инженерных сооружений на основе оптических волноводных структур

Abstract

In the paper the optical sensor allowing measuring a direction, values and localization of bends and stresses in building structures is described. The sensitive element of the sensor is the microstructure fiber with three cores. The use of three-core

218 fiber makes it possible to define the direction of deformation. Localizing the external action on sensing element is provided by the measurement of backscattered radiation. Distribution of mode fields in fiber cores depending on fiber structure and bend and direction value is analyzed. The optimization of the sensitive element parameters depending on the application is proposed.