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Proceedings Paper

Low-cost parallelization of optical fiber based detectors for photoacoustic imaging
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Paper Abstract

We introduce a multichannel optical fiber based detector for photoacoustic imaging. By using in-house produced photodetectors and relative low-cost components from telecommunication industries we were able to reduce the costs for one channel significantly compared to previous setups. The estimated cost for one channel (without sampling device) is below 800 €. The self-made balanced photodetector for 1550 nm achieves a gain of 100 dB, a -3dB bandwidth of 45 MHz and a maximum signal-to-noise-ratio of 48 dB. We present a four channel annular detector array based on optical fiber Mach-Zehnder interferometers. Photoacoustic imaging is demonstrated by measuring photoacoustic signals of a black polyethylene microsphere.

Paper Details

Date Published: 4 March 2013
PDF: 8 pages
Proc. SPIE 8581, Photons Plus Ultrasound: Imaging and Sensing 2013, 85812M (4 March 2013); doi: 10.1117/12.2002034
Show Author Affiliations
Johannes Bauer-Marschallinger, Research Ctr. for Non Destructive Testing GmbH (Austria)
Karoline Felbermayer, Research Ctr. for Non Destructive Testing GmbH (Austria)
Armin Hochreiner, Research Ctr. for Non Destructive Testing GmbH (Austria)
Hubert Grün, Research Ctr. for Non Destructive Testing GmbH (Austria)
Günther Paltauf, Karl-Franzens-Univ. Graz (Austria)
Peter Burgholzer, Research Ctr. for Non Destructive Testing GmbH (Austria)
Christian Doppler Lab. for Photoacoustic Imaging and Laser Ultrasonics (Austria)
Thomas Berer, Research Ctr. for Non Destructive Testing GmbH (Austria)
Christian Doppler Lab. for Photoacoustic Imaging and Laser Ultrasonics (Austria)


Published in SPIE Proceedings Vol. 8581:
Photons Plus Ultrasound: Imaging and Sensing 2013
Alexander A. Oraevsky; Lihong V. Wang, Editor(s)

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