Conference proceeding
Broadband fiber optic hydrophone sensors for sub-millimeter ultrasound resolutions
2008 International Topical Meeting on Microwave Photonics jointly held with the 2008 Asia-Pacific Microwave Photonics Conference
Sep 2008
Abstract
Broadband fiber optic hydrophone probes are an attractive solution for characterization of ultrasound fields with sub-millimeter resolution up to 100 MHz frequency range without need for complicated spatial averaging corrections. In this work, optical hydrophone sensors based on single mode straight - cleaved fibers and down-tapered coated fibers with sensitive dimensions of less than 10 mum have been reported. Thinly gold coated optical fiber sensors demonstrated a higher sensitivity and bandwidth performance than straight cleaved uncoated and down-tapered uncoated. The statistical analysis clearly indicates that the gold coated fibers with thickness of 30 nm provide a 26 dB improvement in sensitivity over that of the uncoated straight cleaved fibers, raising the overall sensitivity of the fiber optic hydrophone sensor to a value of -245 dB re 1 V /muPa (unprecedented 0.56 V/ MPa). Broadband testing of these sensors with a 10 MHz acoustic tone burst further indicates that the bandwidth of gold coated fiber sensor is as high as 60 MHz. Amplified optical source intensity noise limits the current intensity detection system up to 60 MHz.
Metrics
Details
- Title
- Broadband fiber optic hydrophone sensors for sub-millimeter ultrasound resolutions
- Creators
- R Gopinath - Drexel UniversityP Arora - Drexel UniversityG Gandhi - Drexel UniversityL Bansal - Photonics Labs Inc (United States, Philadelphia)A.S Daryoush - Drexel UniversityP.A Lewin - Drexel UniversityM El-Sherif - Photonics Labs Inc (United States, Philadelphia)
- Publication Details
- 2008 International Topical Meeting on Microwave Photonics jointly held with the 2008 Asia-Pacific Microwave Photonics Conference
- Conference
- 2008 International Topical Meeting on Microwave Photonics jointly held with the 2008 Asia-Pacific Microwave Photonics Conference (Gold Coast, Queensland, Australia, 09 Sep 2008–03 Oct 2008)
- Event
- 09 September 2008 - 03 October 2008
- Publisher
- IEEE
- Number of pages
- 4
- 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:000265472700071
- Scopus ID
- 2-s2.0-58049204191
- Other Identifier
- 991019169791004721
InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Web of Science research areas
- Engineering, Electrical & Electronic
- Optics
- Physics, Applied
- Telecommunications