High Frequency Distributed Optical Fibre Dynamic Strain Sensing: A Review

The concept of using an optical fibre to map dynamic perturbations along the sensing fibre was first proposed by Taylor et al. (Taylor 1993) in 1993 and later demonstrated by his team in 2005 (Juarez 2005). The proposed sensor was only capable of detecting the dynamic perturbations along the sensing fibre by monitoring the changes in the pattern of the backscattered coherent Rayleigh noise (CRN). The volume of research since then has proliferated and has mainly been focused on developing distributed optical fibre dynamic strain sensors capable of fully quantifying the characteristics of perturbations. The main driving force behind the expansion of this field has been the growing demand in areas such as the oil and gas industries, geophysical sciences, and structural health monitoring.