Title :
High-frequency ultrasound detection using a fibre Bragg grating
Author :
O´Neil, S.F. ; Hathaway, M.W. ; Fisher, N.E. ; Webb, D.J. ; Pannell, C.N. ; Jackson, D.A. ; Gavrilov, L.R. ; Hand, J.W. ; Zhang, L. ; Bennion, I.
Author_Institution :
Appl. Opt. Group, Canterbury Univ., Christchurch, New Zealand
Abstract :
We demonstrate the feasibility of using in-fibre Bragg gratings to measure MHz acoustic fields and temperature simultaneously. We achieved a noise-limited pressure resolution of ≈4.5*10-4 Atm/√Hz and temperature measurements accurate to 0.2°C. Some preliminary results from a quasi-distributed array of 3 FBGs are outlined
Keywords :
fibre optic sensors; acoustic field measurement; fibre Bragg grating; high-frequency ultrasound detection; optical sensor; quasi-distributed array; temperature measurement;
Conference_Titel :
Optical Fibre Gratings (Ref. No. 1999/023), IEE Colloquium on
Conference_Location :
Birmingham
DOI :
10.1049/ic:19990148
