Response of an embedded fiber optic ultrasound sensor

John Dorighi*, Sridhar Krishnaswamy, Jan D. Achenbach

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

26 Scopus citations


In this work the response of an embedded fiber optic Fabry-Perot ultrasound sensor has been investigated. Calculations were performed that model the fiber as a cylindrical elastic inclusion subjected to obliquely incident harmonic plane waves. The phase shift of the light traveling in the fiber was calculated along the principal strain axes as a function of ultrasonic frequency and incident angle. Experiments were performed to validate the calculations. Induced phase shifts were measured for the cases of normally incident ultrasound impinging upon a fiber sensor submerged in water as well as embedded in epoxy. The case of obliquely incident ultrasound at angles up to 4 deg was also investigated for a fiber embedded in epoxy. The experimental measurements were performed over a bandwidth from 2 to 8 MHz.

Original languageEnglish (US)
Pages (from-to)257-263
Number of pages7
Journaljournal of the Acoustical Society of America
Issue number1
StatePublished - Jan 1997

ASJC Scopus subject areas

  • Arts and Humanities (miscellaneous)
  • Acoustics and Ultrasonics


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