Conference proceeding
Improved fiber optic hydrophone sensors
2007 IEEE ULTRASONICS SYMPOSIUM PROCEEDINGS, VOLS 1-6, pp 2319-2322
01 Jan 2007
Abstract
Broadband fiber optic hydrophones are an attractive solution for characterization and measurement of high Intensity acoustic fields which are encountered in clinical ultrasound applications upto 100MHz. A small sensing area avoids spatial acoustic field averaging and provides sub-millimeter resolution required for enhanced imaging in diagnostic applications. In this paper we present analytical and experimental performance results of broadband down-tapered fiber optical hydrophone sensors based on reflection type sensing and intensity detection scheme. Both uncoated as well as gold coated down-tapered fibers have been fabricated. Experimental results employing these fiber sensors for a 1.6 MHz acoustic signal, at 1 MPa pressure have corroborated the analytical predictions that thin metal coating can improve the sensitivity by almost 15 dB over that of uncoated tapered fiber. Such improvement in sensitivity is due to enhanced reflectance from the thin metal layer that senses the incident acoustic pressure.
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Details
- Title
- Improved fiber optic hydrophone sensors
- Creators
- R. Gopinath - Drexel UniversityK. Srinivasan - Drexel UniversityS. Umchid - Drexel Univ, Sch Biomed Engn Sci & Hlth Syst, Philadelphia, PA 19104 USAL. Bansal - Photon Lab Inc, Philadelphia, PA 19104 USAA. S. Daryoush - Drexel Univ, Dept Elect & Comp Engn, Philadelphia, PA 19104 USAP. A. Lewin - Drexel Univ, Sch Biomed Engn Sci & Hlth Syst, Philadelphia, PA 19104 USAM. El-Sherif - Photon Lab Inc, Philadelphia, PA 19104 USAIEEE
- Publication Details
- 2007 IEEE ULTRASONICS SYMPOSIUM PROCEEDINGS, VOLS 1-6, pp 2319-2322
- Series
- Ultrasonics Symposium
- Publisher
- IEEE
- Number of pages
- 2
- Grant note
- 5 RO1EB007117-02 / NIH; United States Department of Health & Human Services; National Institutes of Health (NIH) - USA
- Resource Type
- Conference proceeding
- Language
- English
- Academic Unit
- Electrical and Computer Engineering; School of Biomedical Engineering, Science, and Health Systems
- Web of Science ID
- WOS:000254281802080
- Scopus ID
- 2-s2.0-48149092931
- Other Identifier
- 991019168218304721
InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Web of Science research areas
- Acoustics
- Biophysics
- Engineering, Electrical & Electronic
- Imaging Science & Photographic Technology
- Physics, Applied