Invariance of the speckle pattern of the transmitted wave in periodic waveguides
Abstract We report on conditions of invariance of the transmitted pattern in the propagation through a periodic waveguide, the incident wave having no effect on the intensity pattern of the transmitted field. This phenomenon is reminiscent of that observed when illuminating a disordered medium in th...
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Nature Portfolio
2025-01-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-025-85971-7 |
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| author | Elie Salemeh Simon Félix Vincent Pagneux |
| author_facet | Elie Salemeh Simon Félix Vincent Pagneux |
| author_sort | Elie Salemeh |
| collection | DOAJ |
| description | Abstract We report on conditions of invariance of the transmitted pattern in the propagation through a periodic waveguide, the incident wave having no effect on the intensity pattern of the transmitted field. This phenomenon is reminiscent of that observed when illuminating a disordered medium in the regime of Anderson localization, as a consequence of the contribution of a single transmission eigenchannel to the transmitted wave. It is shown that the freezing of the transmitted wave is not intrinsically related to the disorder and that, whatever the frequency, it can also be observed in a regular, periodic system, provided that at most one Bloch mode is propagating. Moreover, while all localized modes in a disordered medium are exponentially decaying, our periodic waveguide system offers the possibility of observing the freezing with propagating waves, hence without the counterpart of having a very low energy transmission. |
| format | Article |
| id | doaj-art-ccd3e0da7fae42bda456b774f25b91c2 |
| institution | Kabale University |
| issn | 2045-2322 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj-art-ccd3e0da7fae42bda456b774f25b91c22025-01-26T12:33:21ZengNature PortfolioScientific Reports2045-23222025-01-011511810.1038/s41598-025-85971-7Invariance of the speckle pattern of the transmitted wave in periodic waveguidesElie Salemeh0Simon Félix1Vincent Pagneux2Laboratoire d’Acoustique de l’Université du Mans (LAUM), UMR 6613, Institut d’Acoustique - Graduate School (IA-GS), CNRS, Le Mans UniversitéLaboratoire d’Acoustique de l’Université du Mans (LAUM), UMR 6613, Institut d’Acoustique - Graduate School (IA-GS), CNRS, Le Mans UniversitéLaboratoire d’Acoustique de l’Université du Mans (LAUM), UMR 6613, Institut d’Acoustique - Graduate School (IA-GS), CNRS, Le Mans UniversitéAbstract We report on conditions of invariance of the transmitted pattern in the propagation through a periodic waveguide, the incident wave having no effect on the intensity pattern of the transmitted field. This phenomenon is reminiscent of that observed when illuminating a disordered medium in the regime of Anderson localization, as a consequence of the contribution of a single transmission eigenchannel to the transmitted wave. It is shown that the freezing of the transmitted wave is not intrinsically related to the disorder and that, whatever the frequency, it can also be observed in a regular, periodic system, provided that at most one Bloch mode is propagating. Moreover, while all localized modes in a disordered medium are exponentially decaying, our periodic waveguide system offers the possibility of observing the freezing with propagating waves, hence without the counterpart of having a very low energy transmission.https://doi.org/10.1038/s41598-025-85971-7 |
| spellingShingle | Elie Salemeh Simon Félix Vincent Pagneux Invariance of the speckle pattern of the transmitted wave in periodic waveguides Scientific Reports |
| title | Invariance of the speckle pattern of the transmitted wave in periodic waveguides |
| title_full | Invariance of the speckle pattern of the transmitted wave in periodic waveguides |
| title_fullStr | Invariance of the speckle pattern of the transmitted wave in periodic waveguides |
| title_full_unstemmed | Invariance of the speckle pattern of the transmitted wave in periodic waveguides |
| title_short | Invariance of the speckle pattern of the transmitted wave in periodic waveguides |
| title_sort | invariance of the speckle pattern of the transmitted wave in periodic waveguides |
| url | https://doi.org/10.1038/s41598-025-85971-7 |
| work_keys_str_mv | AT eliesalemeh invarianceofthespecklepatternofthetransmittedwaveinperiodicwaveguides AT simonfelix invarianceofthespecklepatternofthetransmittedwaveinperiodicwaveguides AT vincentpagneux invarianceofthespecklepatternofthetransmittedwaveinperiodicwaveguides |