Ultrasound detection using polymer microring optical resonator

Ashkenazi, Shai; Chung-Yen Chao; Guo, L. Jay; O'Donnell, Matthew
November 2004
Applied Physics Letters;11/29/2004, Vol. 85 Issue 22, p5418
Academic Journal
Application of polymer waveguide microring resonators for high-frequency ultrasound detection is presented. The device consists of a microring optical resonator coupled to a straight optical waveguide which serves as input and output ports. Acoustic waves irradiating the ring waveguide induce strain modifying the waveguide cross section. As a consequence, the effective refractive index of optical waves propagating along the ring is modified. The sharp wavelength dependence of the high Q-factor resonator enhances the optical response to acoustic strain. High sensitivity is demonstrated experimentally in detecting broadband ultrasound pulses from a 10 MHz transducer. Methods of extending the technique to form multi-element ultrasonic arrays for imaging applications are proposed.


Related Articles

  • Properties of optical resonator with a layered metamaterial. Saparina, D. O.; Sukhorukov, A. P. // Optics & Spectroscopy;Sep2009, Vol. 107 Issue 3, p412 

    The properties of longitudinal and transverse modes of an open optical resonator containing layers of a metamaterial with negative refractive index are studied. Due to the presence of these layers, the metaresonator acquires unique properties compared to a conventional open resonator. Eigenmodes...

  • Bloch analysis of finite periodic microring chains. Cherchi, M. // Applied Physics B: Lasers & Optics;Jan2005, Vol. 80 Issue 1, p109 

    We apply Bloch analysis to the study of finite periodic cascading of microring resonators. Diagonalization of the standard transfer matrix approach not only allows one to find an exact analytic expression for transmission and reflection, but also to derive a closed form solution for the field in...

  • New principle for optical filters. Magnusson, R.; Wang, S.S. // Applied Physics Letters;8/31/1992, Vol. 61 Issue 9, p1022 

    Presents a theoretical characterization of the guided-mode resonance properties of planar dielectric waveguide gratings. Control of the resonance linewidths by the grating modulation amplitude; Factors attributed to polarization separation of the elements; Applications of the waveguide gratings...

  • A Monopole—Dipole Resonance Absorber in a Narrow Waveguide. Kanev, N. G.; Mironov, M. A. // Acoustical Physics;Jan2005, Vol. 51 Issue 1, p89 

    A sound absorber in a narrow waveguide is considered. The absorber consists of one monopole and one dipole resonator placed in a narrow pipe. The optimum parameters of the resonators that provide for the maximum absorption of acoustic power are determined. Results of an experimental study of a...

  • Aligning microcavity resonances in silicon photonic-crystal slabs using laser-pumped thermal tuning. Pan, Jun; Yijie Huo; Yamanaka, Kazuhiko; Sandhu, Sunil; Scaccabarozzi, Luigi; Timp, Rolf; Povinelli, Michelle L.; Fan, Shanhui; Fejer, M. M.; Harris, James S. // Applied Physics Letters;3/10/2008, Vol. 92 Issue 10, p103114 

    We report the postfabrication alignment of multiple microcavity resonances in silicon photonic-crystal (PhC) slabs using laser-pumped thermal tuning. The thermal gradient resulting from a focused laser spot was used to differentially tune the resonant wavelengths of two microcavities spaced...

  • High-Q ring resonators in thin silicon-on-insulator. Baehr-Jones, Tom; Hochberg, Michael; Walker, Chris; Scherer, Axel // Applied Physics Letters;10/18/2004, Vol. 85 Issue 16, p3346 

    We have fabricated high-Q microrings from thin silicon-on-insulater SOI layers and measured Q values of 45 000 in these rings, which were then improved to 57 000 by adding a PMMA cladding. The optimal waveguide designs were calculated, and the waveguide losses were analyzed. These high-Q...

  • Add-drop filters utilizing vertically coupled microdisk resonators in silicon. Koonath, Prakash; Indukuri, Tejaswi; Jalali, Bahram // Applied Physics Letters;2/28/2005, Vol. 86 Issue 9, p091102 

    Add-drop filters, based on vertically coupled microdisk resonators, have been realized in silicon, using a modified separation by implantation of oxygen process. Buried rib waveguides in the bottom-layer silicon, of a two-layer structure, are coupled to microdisk resonators in the top-layer...

  • Theoretical and experimental studies of combined therapy of tumours with application of ultrasound. Minchenya, V. T.; Stepanenko, D. A.; Bobrovskaya, A. I.; Krutilina, N. I. // AIP Conference Proceedings;5/24/2012, Vol. 1433 Issue 1, p597 

    The article presents novel method of combined therapy of superficial tumours based on excitation of ultrasonic waves in tumour tissues by means of ring-shaped waveguide with subsequent radiotherapy and results of its theoretical and experimental studies. Harmonic analysis of forced flexural...

  • Self-organization of granular media in airborne ultrasonic fields. Bobrovskaya, A. I.; Stepanenko, D. A.; Minchenya, V. T. // AIP Conference Proceedings;5/24/2012, Vol. 1433 Issue 1, p769 

    The article presents results of experimental and theoretical studies of behaviour of granular media (powder materials) in airborne ultrasonic field created by flexurally-vibrating ring-shaped waveguide with resonant frequency in the range 20-40 kHz. Experiments show that action of acoustic...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics