Open AccessDistributed Bragg reflector fibre laser‐based sensor array for multi‐parameter detection
Author(s) -
Yu Kuanglu,
Wu Chongqing,
Mao Yaya,
Wang Zhi,
Lu Chao,
Tam HwaYaw,
Zhao Yao
Publication year - 2014
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2014.1800
Subject(s) - distributed bragg reflector , optics , fiber bragg grating , reflector (photography) , materials science , laser , optical fiber , distributed bragg reflector laser , optoelectronics , physics , light source
A sensor array employing the distributed Bragg reflector (DBR) fibre laser is presented. This array could be utilised as a multi‐channel multi‐functional detector for bending radius, transverse load and axial strain by simultaneously monitoring the lasing wavelength and the output beat note frequency. The measurement theory of the DBR fibre laser is explained, and it is then experimentally verified with a three‐probe array. The system's detection sensitivities for curvature, transverse load and axial strain are found to be 600 MHz/cm −2 , 1.3 MHz/g and 1.263 pm/με, respectively.