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JOURNAL ARTICLE

Interferometric fiber optic sensors for biomedical applications of optoacoustic imaging

Horacio Lamela, Daniel Gallego, Rebeca Gutierrez, Alexander Oraevsky
Journal of Biophotonics 2011, 4 (3): 184-92
21246745
We present a non-metallic interferometric silica optical fiber ultrasonic wideband sensor for optoacoustic imaging applications. The ultrasonic sensitivity of this sensor has been characterized over the frequency range from 1 to 10 MHz. A comparative analysis has been carried out between this sensor and an array of piezoelectric transducers using optoacoustic signals generated from an optical absorbent embedded in a tissue mimicking phantom. Also, a two dimensional reconstructed image of the phantom using the fiber interferometric sensor is presented and compared to the image obtained using the Laser Optoacoustic Imaging System, LOIS-64B. The feasibility of our fiber optic based sensor for wideband ultrasonic detection is demonstrated.

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