Title :
Fabricating fiber Bragg gratings with tailored spectral properties for strain sensor arrays using a post-exposure rescan technique
Author :
Miller, G.A. ; Askins, Charles G ; Skeath, P. ; Wang, Cheng C. ; Friebele, E.J.
Author_Institution :
Virginia Polytech. Inst. & State Univ., Blacksburg, VA, USA
Abstract :
Multi-element sensor arrays of low-reflectivity, chirped apodized, 1 cm long, and 1 nm wide gratings have been fabricated interferometrically. Once exposed, points along each grating are re-illuminated with fringeless ultra-violet light to achieve <1% flat top ripple in reflectivity and no sidebands to -30 dB.
Keywords :
Bragg gratings; chirp modulation; fibre optic sensors; light interferometry; optical arrays; optical fibre fabrication; reflectivity; strain sensors; 1 cm; 1 nm; fiber Bragg grating fabrication; fibre sensors; flat top ripple; fringeless ultra-violet light; interferometrically; low-reflectivity chirped apodized fibre gratings; post-exposure rescan technique; re-illuminated; reflectivity; strain sensor arrays; tailored spectral properties; Boilers; Charge coupled devices; Charge-coupled image sensors; Combustion; Fires; Fuels; Monitoring; Optical filters; Temperature control; Temperature measurement;
Conference_Titel :
Optical Fiber Sensors Conference Technical Digest, 2002. Ofs 2002, 15th
Conference_Location :
Portland, OR, USA
Print_ISBN :
0-7803-7289-1
DOI :
10.1109/OFS.2002.1000702
