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Proceedings Paper

Optoacoustic fiber optic interferometric sensors for biomedical applications
Author(s): Daniel Gallego; Horacio Lamela
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Paper Abstract

A non-metallic interferometric optical fiber ultrasonic wideband sensor is presented for optoacoustic imaging applications. The ultrasonic sensitivity of intrinsic fiber optic interferometric sensors depends strongly of the material which is composed of. We compare experimentally the acoustic sensitivity of two fiber optic sensors based on singlemode silica optical fiber and multimode graded-index perfluorinated polymer optical fiber, respectively. Both sensors are designed for detection of optoacoustic wave sources with frequencies in the range from 100 kHz to 5 MHz. These results are also compared with a PVDF ultra wideband sensor. We evaluated detection of real world optoacoustic signals, generated from an optically absorbing object embedded in a tissue mimicking phantom, between our silica optical fiber sensor and an array of piezoelectric transducers. Reconstructed two dimensional acoustic images of the phantom are presented and compared with images obtained with the Laser Optoacoustic Imaging System, LOIS-64B, demonstrating the feasibility of our fiber optic sensor as a wideband ultrasonic sensor.

Paper Details

Date Published: 2 June 2011
PDF: 7 pages
Proc. SPIE 8028, Fiber Optic Sensors and Applications VIII, 80280O (2 June 2011); doi: 10.1117/12.884326
Show Author Affiliations
Daniel Gallego, Univ. Carlos III de Madrid (Spain)
Horacio Lamela, Univ. Carlos III de Madrid (Spain)

Published in SPIE Proceedings Vol. 8028:
Fiber Optic Sensors and Applications VIII
Stephen J. Mihailov; Henry H. Du; Gary Pickrell, Editor(s)

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