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On-chip inter-modal Brillouin scattering
Brillouin nonlinearities—which result from coupling between photons and acoustic phonons—are exceedingly weak in conventional nanophotonic silicon waveguides. Only recently have Brillouin interactions been transformed into the strongest and most tailorable nonlinear interactions in silicon using a n...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5504300/ https://www.ncbi.nlm.nih.gov/pubmed/28685776 http://dx.doi.org/10.1038/ncomms15819 |
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author | Kittlaus, Eric A. Otterstrom, Nils T. Rakich, Peter T. |
author_facet | Kittlaus, Eric A. Otterstrom, Nils T. Rakich, Peter T. |
author_sort | Kittlaus, Eric A. |
collection | PubMed |
description | Brillouin nonlinearities—which result from coupling between photons and acoustic phonons—are exceedingly weak in conventional nanophotonic silicon waveguides. Only recently have Brillouin interactions been transformed into the strongest and most tailorable nonlinear interactions in silicon using a new class of optomechanical waveguides that control both light and sound. In this paper, we use a multi-mode optomechanical waveguide to create stimulated Brillouin scattering between light-fields guided in distinct spatial modes of an integrated waveguide for the first time. This interaction, termed stimulated inter-modal Brillouin scattering, decouples Stokes and anti-Stokes processes to enable single-sideband amplification and dynamics that permit near-unity power conversion. Using integrated mode multiplexers to address separate optical modes, we show that circulators and narrowband filters are not necessary to separate pump and signal waves. We also demonstrate net optical amplification and Brillouin energy transfer as the basis for flexible on-chip light sources, amplifiers, nonreciprocal devices and signal-processing technologies. |
format | Online Article Text |
id | pubmed-5504300 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | Nature Publishing Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-55043002017-07-14 On-chip inter-modal Brillouin scattering Kittlaus, Eric A. Otterstrom, Nils T. Rakich, Peter T. Nat Commun Article Brillouin nonlinearities—which result from coupling between photons and acoustic phonons—are exceedingly weak in conventional nanophotonic silicon waveguides. Only recently have Brillouin interactions been transformed into the strongest and most tailorable nonlinear interactions in silicon using a new class of optomechanical waveguides that control both light and sound. In this paper, we use a multi-mode optomechanical waveguide to create stimulated Brillouin scattering between light-fields guided in distinct spatial modes of an integrated waveguide for the first time. This interaction, termed stimulated inter-modal Brillouin scattering, decouples Stokes and anti-Stokes processes to enable single-sideband amplification and dynamics that permit near-unity power conversion. Using integrated mode multiplexers to address separate optical modes, we show that circulators and narrowband filters are not necessary to separate pump and signal waves. We also demonstrate net optical amplification and Brillouin energy transfer as the basis for flexible on-chip light sources, amplifiers, nonreciprocal devices and signal-processing technologies. Nature Publishing Group 2017-07-07 /pmc/articles/PMC5504300/ /pubmed/28685776 http://dx.doi.org/10.1038/ncomms15819 Text en Copyright © 2017, The Author(s) http://creativecommons.org/licenses/by/4.0/ Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
spellingShingle | Article Kittlaus, Eric A. Otterstrom, Nils T. Rakich, Peter T. On-chip inter-modal Brillouin scattering |
title | On-chip inter-modal Brillouin scattering |
title_full | On-chip inter-modal Brillouin scattering |
title_fullStr | On-chip inter-modal Brillouin scattering |
title_full_unstemmed | On-chip inter-modal Brillouin scattering |
title_short | On-chip inter-modal Brillouin scattering |
title_sort | on-chip inter-modal brillouin scattering |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5504300/ https://www.ncbi.nlm.nih.gov/pubmed/28685776 http://dx.doi.org/10.1038/ncomms15819 |
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