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Acoustic wave propagation along cladded fibers of cubic crystal symmetry

From National Research Council Canada

DOIResolve DOI: https://doi.org/10.1109/58.464823
AuthorSearch for: ; Search for: 1
Affiliation
  1. National Research Council of Canada. NRC Industrial Materials Institute
FormatText, Article
Subjectacoustic wave propagation; cubic crystal symmetry; nonpiezoelectric cladded fibers; coupled mode equations; anisotropy; dispersion; flexural modes; torsional modes; radial-axial modes; pertubation formula; birefringence
Abstract
An approximate method is proposed to analyze the acoustic wave propagation characteristics in nonpiezoelectric cladded fibers of cubic crystal symmetry. The fiber axis coincides with the crystalline Z axis. This approximate method utilizes coupled mode equations and the exact solutions for the corresponding cladded isotropic fiber are used as the approximation base. We concentrate our analysis on cubic fibers with weak anisotropy where the first order approximation obtained from the coupled mode equations can provide accurate results. Dispersion curves of a few lower order flexural, torsional and radial-axial modes in such a fiber with infinite cladding are presented for the first time. Higher order approximations are also discussed. We show the accuracy of the perturbation formula, reveal that the torsional and radial-axial modes are not pure in cubic fibers, and inspect the modal birefringence phenomenon.
Publication date
PublisherIEEE
In
  • IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control 42, no. 5: 943–948.
LanguageEnglish
Peer reviewedYes
NRC numberCNRC 33749
NRC-IMI92AP-10121-1309-G
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Record identifier11da8a96-5f1b-4cff-a8a3-24658c584d76
Record created2020-06-08
Record modified2020-06-08
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