Sensor Based on Multiple Fiber Bragg Gratings for Diameter Measurement

Victor Cardoso, Paulo Caldas, M. Giraldi R. Thereza, Orlando Frazão, Claudio Carvalho, João Costa, José L. Santos, O. Frazao, H. Michinel, M.F. Costa
2020 EPJ Web of Conferences  
A method based on multiple Fiber Bragg Gratings (FBG) and a structure fabricated using a 3D printer for diameter measurement is proposed and experimentally demonstrated. The sensor is easily developed inserting the FBG on the structure and fixing the FBG in two points. Due to this arrangement, when the diameter is reduced a force is applied on the sensor and this causes a wavelength shift. The study is divided in two steps using one experimental setup. At first, each FBG response is
more » ... onse is independently evaluated concerning the diameter variation and after that, the FBGs are evaluated together. The results demonstrated that the structure can be used as a way to monitor the diameter variation in some applications.
doi:10.1051/epjconf/202023812013 fatcat:xxmyqincjnbu3p5q2jleqaopyu