A technique to package Fiber Bragg Grating Sensors for Strain and Temperature Measurements

Journal of Microwaves, Optoelectronics and Electromagnetic Applications

Valmir de Oliveira¹  Jonas Somenzi¹  Ivo de Lourenço Junior¹  Hypolito José Kalinowski¹  Kleiton de Morais Sousa¹  Jean Carlos Cardozo da Silva¹  Uilian Dreyer¹ 

[1] Universidade Tecnológica Federal do Paraná;

关键词: Fiber Bragg gratings;    packaging;    strain and temperature measurement;   

DOI  :  10.1590/S2179-10742013000200031

来源: DOAJ

【 摘 要 】

This paper reports an effective method of packaging a fiber Bragg grating (FBG) for the simultaneous measurement of temperature and strain. The technique consists of embedding two fiber Bragg grating sensors inside a polymeric material with different geometrical characteristics. The mechanical and thermal characterizations of the optical transducer were performed. Then a matrix equation used measurements of the wavelength shifts from the two sensors and yielded information about the temperature and strain coefficients. The preliminary results demonstrate the feasibility of the encapsulation technique allowing measurements of temperature and strain in smart structures and harsh environments. The experimental procedure provides robustness to the sensor and the matrix equation approach has the potential to determine simultaneously the strain and temperature coefficients.

【 授权许可】

Unknown