Polymer microring resonators for high-frequency ultrasound detection and imaging

Adam Maxwell, Sheng Wen Huang, Tao Ling, Jin Sung Kim, Shai Ashkenazi, L. Jay Guo

Research output: Contribution to journalArticlepeer-review

48 Scopus citations

Abstract

Polymer microring resonators fabricated by nanoimprinting are presented as a means of ultrasound detection. Acoustic waves impinging on a ring-shaped optical resonator cause strain in the ring dimensions, modulating optical output. Basic acoustic and optical characteristics of the microring sensor are presented. Measurements at several frequencies show a high sensitivity and low noise-equivalent pressure. The angular response is determined by sensing the optoacoustic excitation of a 49 μm polyester microsphere and shows wide-angle sensitivity. A1-D array consisting of four microrings is demonstrated using wavelength multiplexing for addressing each element. The high sensitivity, bandwidth, and angular response make it a potentially useful sensor platform for many applications including high-frequency ultrasonic and photoacoustic imaging.

Original languageEnglish (US)
Pages (from-to)191-197
Number of pages7
JournalIEEE Journal on Selected Topics in Quantum Electronics
Volume14
Issue number1
DOIs
StatePublished - Jan 2008

Keywords

  • Acoustic detectors
  • Acoustic devices
  • Microresonators
  • Optical resonance
  • Optical resonators
  • Optical strip waveguides
  • Optical waveguide components
  • Optical waveguides
  • Ultrasound detector

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