Abstract
With its unique and exceptional nature, photonic optical fiber (PCF), widely used in optical fiber sensors, is welcomed to structural health monitoring. However, few research on PCF subjected to transverse stress is reported. In this paper, by using the finite element analysis software -ANSYS, several kinds of photonic crystal fibers of different structural parameters were analyzed. The changing relation of structural displacement with the change of air-hole pitch is gained by numerical simulation. The result indicates that optical fiber structural displacement increases with the increase of air-hole pitch. At the same time, it is an effective method to improve the lateral deformation of PCF by enhancing the air-hole pitch in the PCF diameter scope as far as possible. This paper presents a reference for optimizing the sensing structural model, enhancing the sensitivity of optical fiber sensing and detecting.
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