A novel miniature optical fibre probe for MHz frequency ultrasound

Author

Surowiec, J. ; Fisher, N.E. ; Webb, D.J. ; Jackson, D.A. ; Gavrilov, L. ; Hand, J.W. ; Zhang, L. ; Bennion, I.

Author_Institution

Phys. Lab., Canterbury Univ., Christchurch, New Zealand

Volume

2

fYear

1996

fDate

3-6 Nov 1996

Firstpage

1051

Abstract

The authors investigate the feasibilty of using in-fibre Bragg gratings to measure ultrasonic fields for medical applications. Two signal processing schemes for interrogating the gratings are described. Preliminary results for each scheme (one a homodyne approach, the other a heterodyne) give a noise limited pressure resolution of 2.2×10 ^-4 Atm/Hz^½ and 1.8×10^-2 Atm/Hz^½, respectively. The second scheme however, gives a more stable response

Keywords

biomedical ultrasonics; diffraction gratings; fibre optic sensors; medical signal processing; probes; signal detection; MHz frequency ultrasound; gratings interrogation; heterodyne approach; homodyne approach; in-fibre Bragg gratings; medical applications; miniature optical fibre probe; noise limited pressure resolution; signal processing schemes; stable response; ultrasonic fields measurement; Biomedical equipment; Bragg gratings; Frequency; Medical services; Optical fibers; Optical noise; Optical signal processing; Probes; Ultrasonic imaging; Ultrasonic variables measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium, 1996. Proceedings., 1996 IEEE

Conference_Location

San Antonio, TX

ISSN

1051-0117

Print_ISBN

0-7803-3615-1

Type

conf

DOI

10.1109/ULTSYM.1996.584172

Filename

584172