High-efficiency acousto-optic coupling in phoxonic resonator based on silicon fishbone nanobeam cavity

Chien Chang Chiu, Wei Min Chen, Kuen Wei Sung, Fu-Li Hsiao

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

We investigate the acousto-optic coupling rates between different acoustic resonance modes and a specified optical resonance mode in a one-dimensional phoxonic crystal fishbone nanobeam formed by periodically arranging semi-cylinders of air on both sides of a suspended silicon waveguide. The gradually tapered unit cells form optical and acoustic resonators. In acousto-optic coupling rate calculation, the acoustic fields and optical fields are obtained by steady state monochromatic analysis and eigen-mode computation, respectively. Results showed that the acoustic polarizations and symmetries of the acoustic resonance modes are dominant factors in the acousto-optic coupling efficiency, and appropriate selection of these parameters can prevent cancellation of acousto-optic interactions, thereby enhancing acousto-optic coupling rates. This study provides important insights that can be applied to acousto-optic device designs.

Original languageEnglish
Pages (from-to)6076-6091
Number of pages16
JournalOptics Express
Volume25
Issue number6
DOIs
Publication statusPublished - 2017 Mar 20

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acousto-optics
resonators
cavities
silicon
acoustic resonance
acoustics
optical resonance
optical resonators
cancellation
waveguides
air
symmetry
polarization
cells
crystals
interactions

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

Cite this

Chiu, Chien Chang ; Chen, Wei Min ; Sung, Kuen Wei ; Hsiao, Fu-Li. / High-efficiency acousto-optic coupling in phoxonic resonator based on silicon fishbone nanobeam cavity. In: Optics Express. 2017 ; Vol. 25, No. 6. pp. 6076-6091.
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High-efficiency acousto-optic coupling in phoxonic resonator based on silicon fishbone nanobeam cavity. / Chiu, Chien Chang; Chen, Wei Min; Sung, Kuen Wei; Hsiao, Fu-Li.

In: Optics Express, Vol. 25, No. 6, 20.03.2017, p. 6076-6091.

Research output: Contribution to journalArticle

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