Review: optical fiber sensors for civil engineering applications

Optical fiber sensor (OFS) technologies have developed rapidly over the last few decades, and various types of OFS have found practical applications in the field of civil engineering. In this paper, which is resulting from the work of the RILEM technical committee “Optical fiber sensors for civil engineering applications”, different kinds of sensing techniques, including change of light intensity, interferometry, fiber Bragg grating, adsorption measurement and distributed sensing, are briefly reviewed to introduce the basic sensing principles. Then, the applications of OFS in highway structures, building structures, geotechnical structures, pipelines as well as cables monitoring are described, with focus on sensor design, installation technique and sensor performance. It is believed that the State-of-the-Art review is helpful to engineers considering the use of OFS in their projects, and can facilitate the wider application of OFS technologies in construction industry

Power Flow in a Large-Core Multimode Fiber under External Perturbation and its Applications

The authors sincerely acknowledge the financial support from the National Science Foundation of China (Grant No. 51577149), and State Key Laboratory of Electrical Insulation and Power Equipment (Grant No. EIPE14117). This work was supported by the Engineering and Physical Sciences Research Council [grant number EP/L022559/2]