Design of non-reciprocal acoustic waveguides by indirect interband transitions

Atsushi Ishikawa, Kenji Tsuruta

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

We numerically demonstrate a non-reciprocal acoustic waveguide by utilizing the indirect interband transition between two guided modes. The waveguide, consisting of a water core sandwiched between parallel steel plates, is designed to support symmetric and asymmetric guided modes with different frequencies and wavevectors. Dynamic mode conversion is then achieved by applying spatio-temporal density modulation in the core of the waveguide to induce both frequency and wavevector shifts of the incident guided wave. Numerical simulations prove that the phase matching condition is satisfied only for the forward propagation, not for the backward one, thus realizing the non-reciprocal acoustic waveguide. Our approach based on a linear dynamic system may achieve wide-band tunable operation with a low-energy consumption, paving the way toward the sophisticated acoustic diode applications.

Original languageEnglish
Article number07JB01
JournalJapanese Journal of Applied Physics
Volume56
Issue number7
DOIs
Publication statusPublished - Jul 1 2017

Fingerprint

Waveguides
Acoustics
waveguides
acoustics
Phase matching
Guided electromagnetic wave propagation
energy consumption
phase matching
frequency shift
Dynamical systems
Diodes
Energy utilization
diodes
Modulation
steels
broadband
modulation
propagation
Steel
shift

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

Cite this

Design of non-reciprocal acoustic waveguides by indirect interband transitions. / Ishikawa, Atsushi; Tsuruta, Kenji.

In: Japanese Journal of Applied Physics, Vol. 56, No. 7, 07JB01, 01.07.2017.

Research output: Contribution to journalArticle

@article{435ddd8f5a7948c89e4e28762ab9ce5d,
title = "Design of non-reciprocal acoustic waveguides by indirect interband transitions",
abstract = "We numerically demonstrate a non-reciprocal acoustic waveguide by utilizing the indirect interband transition between two guided modes. The waveguide, consisting of a water core sandwiched between parallel steel plates, is designed to support symmetric and asymmetric guided modes with different frequencies and wavevectors. Dynamic mode conversion is then achieved by applying spatio-temporal density modulation in the core of the waveguide to induce both frequency and wavevector shifts of the incident guided wave. Numerical simulations prove that the phase matching condition is satisfied only for the forward propagation, not for the backward one, thus realizing the non-reciprocal acoustic waveguide. Our approach based on a linear dynamic system may achieve wide-band tunable operation with a low-energy consumption, paving the way toward the sophisticated acoustic diode applications.",
author = "Atsushi Ishikawa and Kenji Tsuruta",
year = "2017",
month = "7",
day = "1",
doi = "10.7567/JJAP.56.07JB01",
language = "English",
volume = "56",
journal = "Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes",
issn = "0021-4922",
publisher = "INSTITUTE OF PURE AND APPLIED PHYSICS",
number = "7",

}

TY - JOUR

T1 - Design of non-reciprocal acoustic waveguides by indirect interband transitions

AU - Ishikawa, Atsushi

AU - Tsuruta, Kenji

PY - 2017/7/1

Y1 - 2017/7/1

N2 - We numerically demonstrate a non-reciprocal acoustic waveguide by utilizing the indirect interband transition between two guided modes. The waveguide, consisting of a water core sandwiched between parallel steel plates, is designed to support symmetric and asymmetric guided modes with different frequencies and wavevectors. Dynamic mode conversion is then achieved by applying spatio-temporal density modulation in the core of the waveguide to induce both frequency and wavevector shifts of the incident guided wave. Numerical simulations prove that the phase matching condition is satisfied only for the forward propagation, not for the backward one, thus realizing the non-reciprocal acoustic waveguide. Our approach based on a linear dynamic system may achieve wide-band tunable operation with a low-energy consumption, paving the way toward the sophisticated acoustic diode applications.

AB - We numerically demonstrate a non-reciprocal acoustic waveguide by utilizing the indirect interband transition between two guided modes. The waveguide, consisting of a water core sandwiched between parallel steel plates, is designed to support symmetric and asymmetric guided modes with different frequencies and wavevectors. Dynamic mode conversion is then achieved by applying spatio-temporal density modulation in the core of the waveguide to induce both frequency and wavevector shifts of the incident guided wave. Numerical simulations prove that the phase matching condition is satisfied only for the forward propagation, not for the backward one, thus realizing the non-reciprocal acoustic waveguide. Our approach based on a linear dynamic system may achieve wide-band tunable operation with a low-energy consumption, paving the way toward the sophisticated acoustic diode applications.

UR - http://www.scopus.com/inward/record.url?scp=85025084721&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85025084721&partnerID=8YFLogxK

U2 - 10.7567/JJAP.56.07JB01

DO - 10.7567/JJAP.56.07JB01

M3 - Article

AN - SCOPUS:85025084721

VL - 56

JO - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes

JF - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes

SN - 0021-4922

IS - 7

M1 - 07JB01

ER -