13 April 2015 A fiber DBR laser based vector hydrophone for ultrasonic medical applications
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Proceedings Volume 9522, Selected Papers from Conferences of the Photoelectronic Technology Committee of the Chinese Society of Astronautics 2014, Part II; 95220A (2015) https://doi.org/10.1117/12.2178433
Event: Selected Proceedings of the Photoelectronic Technology Committee Conferences held August-October 2014, 2014, China, China
Abstract
An ultrasonic hydrophone based on a dual polarization distributed Bragg reflector (DBR) fiber laser is described, and its application to detecting the vector medical ultrasound is demonstrated. The principle of the hydrophone is based on the detection of output beat frequency signal modulated by ultrasound. The amplitude, frequency and orientation of the ultrasound can be determined by the using the upper and lower sideband frequency. It has been found that the hydrophone has an orientation recognizable ability which the piezoelectric ultrasonic immersion transducer doesn’t have. It suggests that the type of hydrophone can provide an alternative to piezoelectric hydrophone technology.
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Han Wang, Han Wang, Xi Guo, Xi Guo, Jingyi Gao, Jingyi Gao, Chengang Lyu, Chengang Lyu, "A fiber DBR laser based vector hydrophone for ultrasonic medical applications", Proc. SPIE 9522, Selected Papers from Conferences of the Photoelectronic Technology Committee of the Chinese Society of Astronautics 2014, Part II, 95220A (13 April 2015); doi: 10.1117/12.2178433; https://doi.org/10.1117/12.2178433
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