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Complete linear optical isolation at the microscale with ultralow loss
Low-loss optical isolators and circulators are critical nonreciprocal components for signal routing and protection, but their chip-scale integration is not yet practical using standard photonics foundry processes. The significant challenges that confront integration of magneto-optic nonreciprocal sy...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5431488/ https://www.ncbi.nlm.nih.gov/pubmed/28484213 http://dx.doi.org/10.1038/s41598-017-01494-w |
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author | Kim, JunHwan Kim, Seunghwi Bahl, Gaurav |
author_facet | Kim, JunHwan Kim, Seunghwi Bahl, Gaurav |
author_sort | Kim, JunHwan |
collection | PubMed |
description | Low-loss optical isolators and circulators are critical nonreciprocal components for signal routing and protection, but their chip-scale integration is not yet practical using standard photonics foundry processes. The significant challenges that confront integration of magneto-optic nonreciprocal systems on chip have made imperative the exploration of magnet free alternatives. However, none of these approaches have yet demonstrated linear optical isolation with ideal characteristics over a microscale footprint – simultaneously incorporating large contrast with ultralow forward loss – having fundamental compatibility with photonic integration in standard waveguide materials. Here we demonstrate that complete linear optical isolation can be obtained within any dielectric waveguide using only a whispering-gallery microresonator pumped by a single-frequency laser. The isolation originates from a nonreciprocal induced transparency based on a coherent light-sound interaction, with the coupling originating from the traveling-wave Brillouin scattering interaction, that breaks time-reversal symmetry within the waveguide-resonator system. Our result demonstrates that material-agnostic and wavelength-agnostic optical isolation is far more accessible for chip-scale photonics than previously thought. |
format | Online Article Text |
id | pubmed-5431488 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-54314882017-05-16 Complete linear optical isolation at the microscale with ultralow loss Kim, JunHwan Kim, Seunghwi Bahl, Gaurav Sci Rep Article Low-loss optical isolators and circulators are critical nonreciprocal components for signal routing and protection, but their chip-scale integration is not yet practical using standard photonics foundry processes. The significant challenges that confront integration of magneto-optic nonreciprocal systems on chip have made imperative the exploration of magnet free alternatives. However, none of these approaches have yet demonstrated linear optical isolation with ideal characteristics over a microscale footprint – simultaneously incorporating large contrast with ultralow forward loss – having fundamental compatibility with photonic integration in standard waveguide materials. Here we demonstrate that complete linear optical isolation can be obtained within any dielectric waveguide using only a whispering-gallery microresonator pumped by a single-frequency laser. The isolation originates from a nonreciprocal induced transparency based on a coherent light-sound interaction, with the coupling originating from the traveling-wave Brillouin scattering interaction, that breaks time-reversal symmetry within the waveguide-resonator system. Our result demonstrates that material-agnostic and wavelength-agnostic optical isolation is far more accessible for chip-scale photonics than previously thought. Nature Publishing Group UK 2017-05-08 /pmc/articles/PMC5431488/ /pubmed/28484213 http://dx.doi.org/10.1038/s41598-017-01494-w Text en © The Author(s) 2017 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 Kim, JunHwan Kim, Seunghwi Bahl, Gaurav Complete linear optical isolation at the microscale with ultralow loss |
title | Complete linear optical isolation at the microscale with ultralow loss |
title_full | Complete linear optical isolation at the microscale with ultralow loss |
title_fullStr | Complete linear optical isolation at the microscale with ultralow loss |
title_full_unstemmed | Complete linear optical isolation at the microscale with ultralow loss |
title_short | Complete linear optical isolation at the microscale with ultralow loss |
title_sort | complete linear optical isolation at the microscale with ultralow loss |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5431488/ https://www.ncbi.nlm.nih.gov/pubmed/28484213 http://dx.doi.org/10.1038/s41598-017-01494-w |
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