High-frequency ultrasound sensors using polymer microring resonators

Polymer microring resonators are demonstrated as high-frequency, ultrasound detectors. An optical microring resonator consists of a ring waveguide closely coupled to a straight bus waveguide, serving as light input and output. Acoustic waves irradiating the ring induce strain, deforming the waveguid...

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Bibliographische Detailangaben
Veröffentlicht in:IEEE transactions on ultrasonics, ferroelectrics, and frequency control. - 1986. - 54(2007), 5 vom: 29. Mai, Seite 957-65
1. Verfasser: Chao, Chung-Yen (VerfasserIn)
Weitere Verfasser: Ashkenazi, Shai, Huang, Sheng-Wen, O'Donnell, Matthew, Guo, L Jay
Format: Aufsatz
Sprache:English
Veröffentlicht: 2007
Zugriff auf das übergeordnete Werk:IEEE transactions on ultrasonics, ferroelectrics, and frequency control
Schlagworte:Evaluation Study Journal Article Research Support, N.I.H., Extramural Polymers
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520 |a Polymer microring resonators are demonstrated as high-frequency, ultrasound detectors. An optical microring resonator consists of a ring waveguide closely coupled to a straight bus waveguide, serving as light input and output. Acoustic waves irradiating the ring induce strain, deforming the waveguide dimensions and changing the refractive index of the waveguide via the elasto-optic effect. These effects modify the effective refractive index of the guided mode inside the waveguide. The sharp wavelength dependence of the microring resonance can enhance the optical response to acoustic strain. Such polymer microring resonators are experimentally demonstrated in detecting broadband ultrasound pulses from a 50 MHz transducer. Measured frequency response shows that these devices have potential in high-frequency, ultrasound detection. Design guidelines for polymer microring resonators forming an ultrasound detector array are discussed 
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650 4 |a Journal Article 
650 4 |a Research Support, N.I.H., Extramural 
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700 1 |a Huang, Sheng-Wen  |e verfasserin  |4 aut 
700 1 |a O'Donnell, Matthew  |e verfasserin  |4 aut 
700 1 |a Guo, L Jay  |e verfasserin  |4 aut 
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