Integrated optics design concepts applied to high frequency ultrasound detection

Shai Ashkenazi; Matthew O'Donnell; L. Jay Guo; Chung-Yen Chao

doi:10.1117/12.589309

25 April 2005 Integrated optics design concepts applied to high frequency ultrasound detection

Shai Ashkenazi, Matthew O'Donnell, L. Jay Guo, Chung-Yen Chao

Proceedings Volume 5697, Photons Plus Ultrasound: Imaging and Sensing 2005: The Sixth Conference on Biomedical Thermoacoustics, Optoacoustics, and Acousto-optics; (2005) https://doi.org/10.1117/12.589309
Event: SPIE BiOS, 2005, San Jose, CA, United States

Abstract

A novel application of polymer waveguide microring resonator for high-frequency ultrasound detection is presented. The device consists of a microring optical resonator that is coupled to a straight optical waveguide which serves as both input and output ports. Acoustic waves irradiating the ring waveguide induce strain that causes a change in the effective refractive index of optical waves propagating along the ring. The sharp wavelength dependence of the high Q-factor resonator enhances the optical response to the acoustic strain. High sensitivity has been demonstrated experimentally in the detection of broadband ultrasound pulses from a 10MHz transducer. WDM methods are proposed to extend the technique into an array of microrings for ultrasound imaging applications.

Citation Download Citation

Shai Ashkenazi, Matthew O'Donnell, L. Jay Guo, and Chung-Yen Chao "Integrated optics design concepts applied to high frequency ultrasound detection", Proc. SPIE 5697, Photons Plus Ultrasound: Imaging and Sensing 2005: The Sixth Conference on Biomedical Thermoacoustics, Optoacoustics, and Acousto-optics, (25 April 2005); https://doi.org/10.1117/12.589309

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