Versatile photonic molecule switch in multimode microresonators

Abstract Harnessing optical supermode interaction to construct artificial photonic molecules has uncovered a series of fundamental optical phenomena analogous to atomic physics. Previously, the distinct energy levels and interactions in such two-level systems were provided by coupled microresonators...

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Main Authors: Zihan Tao, Bitao Shen, Wencan Li, Luwen Xing, Haoyu Wang, Yichen Wu, Yuansheng Tao, Yan Zhou, Yandong He, Chao Peng, Haowen Shu, Xingjun Wang
Format: Article
Language:English
Published: Nature Publishing Group 2024-02-01
Series:Light: Science & Applications
Online Access:https://doi.org/10.1038/s41377-024-01399-0
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author Zihan Tao
Bitao Shen
Wencan Li
Luwen Xing
Haoyu Wang
Yichen Wu
Yuansheng Tao
Yan Zhou
Yandong He
Chao Peng
Haowen Shu
Xingjun Wang
author_facet Zihan Tao
Bitao Shen
Wencan Li
Luwen Xing
Haoyu Wang
Yichen Wu
Yuansheng Tao
Yan Zhou
Yandong He
Chao Peng
Haowen Shu
Xingjun Wang
author_sort Zihan Tao
collection DOAJ
description Abstract Harnessing optical supermode interaction to construct artificial photonic molecules has uncovered a series of fundamental optical phenomena analogous to atomic physics. Previously, the distinct energy levels and interactions in such two-level systems were provided by coupled microresonators. The reconfigurability is limited, as they often require delicate external field stimuli or mechanically altering the geometric factors. These highly specific approaches also limit potential applications. Here, we propose a versatile on-chip photonic molecule in a multimode microring, utilizing a flexible regulation methodology to dynamically control the existence and interaction strength of spatial modes. The transition between single/multi-mode states enables the “switched-off/on” functionality of the photonic molecule, supporting wider generalized applications scenarios. In particular, “switched-on” state shows flexible and multidimensional mode splitting control in aspects of both coupling strength and phase difference, equivalent to the a.c. and d.c. Stark effect. “Switched-off” state allows for perfect low-loss single-mode transition (Qi ~ 10 million) under an ultra-compact bend size (FSR ~ 115 GHz) in a foundry-based silicon microring. It breaks the stereotyped image of the FSR-Q factor trade-off, enabling ultra-wideband and high-resolution millimeter-wave photonic operations. Our demonstration provides a flexible and portable solution for the integrated photonic molecule system, extending its research scope from fundamental physics to real-world applications such as nonlinear optical signal processing and sixth-generation wireless communication.
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spelling doaj.art-f0bf86d330544414a1ade2e7b3d3e3d22024-03-05T20:24:44ZengNature Publishing GroupLight: Science & Applications2047-75382024-02-0113111210.1038/s41377-024-01399-0Versatile photonic molecule switch in multimode microresonatorsZihan Tao0Bitao Shen1Wencan Li2Luwen Xing3Haoyu Wang4Yichen Wu5Yuansheng Tao6Yan Zhou7Yandong He8Chao Peng9Haowen Shu10Xingjun Wang11State Key Laboratory of Advanced Optical Communications System and Networks, School of Electronics, Peking UniversityState Key Laboratory of Advanced Optical Communications System and Networks, School of Electronics, Peking UniversityState Key Laboratory of Advanced Optical Communications System and Networks, School of Electronics, Peking UniversityCollege of Engineering, Peking UniversitySchool of Integrated Circuits, Peking UniversityState Key Laboratory of Advanced Optical Communications System and Networks, School of Electronics, Peking UniversityState Key Laboratory of Advanced Optical Communications System and Networks, School of Electronics, Peking UniversityPeking University Yangtze Delta Institute of OptoelectronicsSchool of Integrated Circuits, Peking UniversityState Key Laboratory of Advanced Optical Communications System and Networks, School of Electronics, Peking UniversityState Key Laboratory of Advanced Optical Communications System and Networks, School of Electronics, Peking UniversityState Key Laboratory of Advanced Optical Communications System and Networks, School of Electronics, Peking UniversityAbstract Harnessing optical supermode interaction to construct artificial photonic molecules has uncovered a series of fundamental optical phenomena analogous to atomic physics. Previously, the distinct energy levels and interactions in such two-level systems were provided by coupled microresonators. The reconfigurability is limited, as they often require delicate external field stimuli or mechanically altering the geometric factors. These highly specific approaches also limit potential applications. Here, we propose a versatile on-chip photonic molecule in a multimode microring, utilizing a flexible regulation methodology to dynamically control the existence and interaction strength of spatial modes. The transition between single/multi-mode states enables the “switched-off/on” functionality of the photonic molecule, supporting wider generalized applications scenarios. In particular, “switched-on” state shows flexible and multidimensional mode splitting control in aspects of both coupling strength and phase difference, equivalent to the a.c. and d.c. Stark effect. “Switched-off” state allows for perfect low-loss single-mode transition (Qi ~ 10 million) under an ultra-compact bend size (FSR ~ 115 GHz) in a foundry-based silicon microring. It breaks the stereotyped image of the FSR-Q factor trade-off, enabling ultra-wideband and high-resolution millimeter-wave photonic operations. Our demonstration provides a flexible and portable solution for the integrated photonic molecule system, extending its research scope from fundamental physics to real-world applications such as nonlinear optical signal processing and sixth-generation wireless communication.https://doi.org/10.1038/s41377-024-01399-0
spellingShingle Zihan Tao
Bitao Shen
Wencan Li
Luwen Xing
Haoyu Wang
Yichen Wu
Yuansheng Tao
Yan Zhou
Yandong He
Chao Peng
Haowen Shu
Xingjun Wang
Versatile photonic molecule switch in multimode microresonators
Light: Science & Applications
title Versatile photonic molecule switch in multimode microresonators
title_full Versatile photonic molecule switch in multimode microresonators
title_fullStr Versatile photonic molecule switch in multimode microresonators
title_full_unstemmed Versatile photonic molecule switch in multimode microresonators
title_short Versatile photonic molecule switch in multimode microresonators
title_sort versatile photonic molecule switch in multimode microresonators
url https://doi.org/10.1038/s41377-024-01399-0
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