Title :
Ultrasonic field and temperature sensor based on short in-fibre Bragg gratings
Author :
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, Kent Univ., Canterbury, UK
fDate :
5/28/1998 12:00:00 AM
Abstract :
The authors demonstrate that in-fibre Bragg gratings may be successfully used to measure megahertz acoustic fields if the grating length is sufficiently short and the optical fibre is appropriately desensitised. A noise-limited pressure resolution of 4.5×10-3 atm/√Hz was found. The capability to simultaneously act as a temperature sensor is also demonstrated
Keywords :
acoustic field; biomedical ultrasonics; biosensors; diffraction gratings; fibre optic sensors; temperature sensors; ultrasonic measurement; desensitised optical fibre; grating length; in-fibre Bragg gratings; noise-limited pressure resolution; ultrasonic field sensor; ultrasonic temperature sensor;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19980795
