Title :
Quasi-distributed strain sensor incorporating a chirped Moire/spl acute/ fiber Bragg grating
Author :
Gillooly, A.M. ; Zhang, L. ; Bennion, I.
Author_Institution :
Photonics Res. Group, Aston Univ., Birmingham, UK
Abstract :
A quasi-distributed strain sensor with an average spatial resolution of 164 μm over a length of 25 mm and a strain sensitivity of 0.8/spl plusmn/0.01 pm/μ/spl epsiv/ has been experimentally demonstrated. The sensor was formed by a chirped Moire/spl acute/ fiber Bragg grating written into the core of single-mode optical fiber with a 244-nm continuous-wave laser.
Keywords :
Bragg gratings; chirp modulation; distributed sensors; fibre optic sensors; optical fibre fabrication; strain sensors; 244 nm; 25 mm; chirped Moire fiber Bragg grating; quasidistributed strain sensor; single-mode optical fiber; Bragg gratings; Capacitive sensors; Chirp; Fiber gratings; Fiber lasers; Optical fiber sensors; Passband; Refractive index; Spatial resolution; Strain measurement; Bragg; MoirÉ; fiber; grating; sensor; strain;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2004.840812
