Comparative study of different parameters of fibre Bragg gratings and long period gratings sensors for high-temperature measurements

Luis Brito Melo; Nara Ângelo; Nelia Aberto; Carlos Marques; José Monteiro; Gaspar Rego; Paulo Caldas; Rogério Nogueira

doi:10.1117/12.892166

26 July 2011 Comparative study of different parameters of fibre Bragg gratings and long period gratings sensors for high-temperature measurements

Luis Brito Melo, Nara Ângelo, Nelia Aberto, Carlos Marques, José Monteiro, Gaspar Rego, Paulo Caldas, Rogério Nogueira

Author Affiliations +

Proceedings Volume 8001, International Conference on Applications of Optics and Photonics; 800123 (2011) https://doi.org/10.1117/12.892166
Event: International Conference on Applications of Optics and Photonics, 2011, Braga, Portugal

Abstract

This paper presents a comparative study of the behaviour of different kinds of optical fibre sensors in response to high temperatures. It compares the performance of regenerated fibre Bragg gratings (FBGs) written in hydrogen-loaded and non-loaded fibres with long period gratings (LPGs) written through the two different processes of ultraviolet (UV) irradiation and electrical arc discharges. This work shows the importance of the use of hydrogen-loaded fibres to achieve regenerated FBGs capable of withstanding high temperatures as high as 955°C. In addition, the results demonstrated that LPGs recorded by electric arc discharges have higher thermal resistance than LPGs written by UV radiation.

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Luis Brito Melo, Nara Ângelo, Nelia Aberto, Carlos Marques, José Monteiro, Gaspar Rego, Paulo Caldas, and Rogério Nogueira "Comparative study of different parameters of fibre Bragg gratings and long period gratings sensors for high-temperature measurements", Proc. SPIE 8001, International Conference on Applications of Optics and Photonics, 800123 (26 July 2011); https://doi.org/10.1117/12.892166

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