Anisotropy-Dominated Topological Transitions for Photonic Crystals

Anisotropy-Dominated Topological Transitions for Photonic Crystals | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Article Anisotropy-Dominated Topological Transitions for Photonic Crystals Fengliang Dong, Jiawei Wang, Weiguo Chu This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-7923395/v1 This work is licensed under a CC BY 4.0 License Status: Posted Version 1 posted You are reading this latest preprint version Abstract Topological photonic insulators can robustly transport light along a topologically protected interface and have proven to be a promising platform for light manipulation. As a classical structure, two-dimensional Z₂ photonic crystals with expanded /shrunken honeycomb lattices have been verified to be topologically trivial recently. Herein, we propose a generalized platform of rotation-steered non-trivially topological photonic crystals with anisotropic pillars in a honeycomb lattice, and construct an effective theoretical model to precisely predict the formation of Kramers degeneracy. Furthermore, we reveal that the degenerate states of the platform are anisotropy-tunable but material-independent. We also investigate the geometry-tunable nontrivial topology of the photonic crystals with anisotropic pillars. Our work provides a framework for exploration of novel topological photonic devices with great flexibility and diversity. Physical sciences/Optics and photonics/Optical physics/Sub-wavelength optics Physical sciences/Nanoscience and technology/Nanoscale devices/Nanophotonics and plasmonics Full Text Additional Declarations There is NO Competing Interest. Supplementary Files AnisotropyDominatedTopologicalTransitionsforPhotonicCrystalsSI.docx Anisotropy-Dominated Topological Transitions for Photonic Crystals Cite Share Download PDF Status: Posted Version 1 posted You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. We do this by developing innovative software and high quality services for the global research community. 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Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-7923395","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Article","associatedPublications":[],"authors":[{"id":533389384,"identity":"946eb6a2-d31a-401f-85a3-888cff3f098f","order_by":0,"name":"Fengliang Dong","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAu0lEQVRIiWNgGAWjYDCCA0BcUWBDqpYzBmkIDrFaDpOghe947+EXBwzO5/HPbj74+eMeBnlzQlokz5xLszhgcLtY4s6xZIkDzxgMdzYQ0GJwI8fM+IPB7cQGIIPhwAGGBANCrgNpMThgcC5xPilajB8cMDiQuIFoLZJnzgBVGiQnbryRlixx5oCE4QZCWviO9xh/OFBhlzjvRvLBDxUHbOQJ2gIEbBJIHAmcypAB8weilI2CUTAKRsHIBQCQvExKWmhhxgAAAABJRU5ErkJggg==","orcid":"https://orcid.org/0000-0001-6008-7011","institution":"国家纳米科学中心","correspondingAuthor":true,"prefix":"","firstName":"Fengliang","middleName":"","lastName":"Dong","suffix":""},{"id":533389385,"identity":"95544593-e9f9-4c07-92b4-d6641896da88","order_by":1,"name":"Jiawei Wang","email":"","orcid":"","institution":"国家纳米科学中心","correspondingAuthor":false,"prefix":"","firstName":"Jiawei","middleName":"","lastName":"Wang","suffix":""},{"id":533389386,"identity":"9924e2e5-4124-4016-815e-8aa0f954d8f0","order_by":2,"name":"Weiguo Chu","email":"","orcid":"","institution":"Chinese Academy of Sciences, National Center for Nanoscience and Technology","correspondingAuthor":false,"prefix":"","firstName":"Weiguo","middleName":"","lastName":"Chu","suffix":""}],"badges":[],"createdAt":"2025-10-22 12:16:23","currentVersionCode":1,"declarations":"","doi":"10.21203/rs.3.rs-7923395/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-7923395/v1","draftVersion":[],"editorialEvents":[],"editorialNote":"","failedWorkflow":false,"files":[{"id":94673536,"identity":"07df95ab-cfa6-493b-8a70-bdafdbe2b30e","added_by":"auto","created_at":"2025-10-29 13:41:31","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":1147220,"visible":true,"origin":"","legend":"","description":"","filename":"AnisotropyDominatedTopologicalTransitionsforPhotonicCrystals.pdf","url":"https://assets-eu.researchsquare.com/files/rs-7923395/v1_covered_b69d7686-09cc-4c29-9fe2-941014c38b78.pdf"},{"id":94162777,"identity":"563f90e9-a67c-4c73-b88f-cbd4d8f87ce4","added_by":"auto","created_at":"2025-10-23 05:22:06","extension":"docx","order_by":1,"title":"","display":"","copyAsset":false,"role":"supplement","size":11899353,"visible":true,"origin":"","legend":"Anisotropy-Dominated Topological Transitions for Photonic Crystals","description":"","filename":"AnisotropyDominatedTopologicalTransitionsforPhotonicCrystalsSI.docx","url":"https://assets-eu.researchsquare.com/files/rs-7923395/v1/63c3af9110749c3776c709be.docx"}],"financialInterests":"There is \u003cb\u003eNO\u003c/b\u003e Competing Interest.","formattedTitle":"Anisotropy-Dominated Topological Transitions for Photonic Crystals","fulltext":[],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":false,"hasOptedInToPreprint":true,"hasPassedJournalQc":"","hasAnyPriority":true,"hideJournal":true,"highlight":"","institution":"","isAcceptedByJournal":false,"isAuthorSuppliedPdf":true,"isDeskRejected":"","isHiddenFromSearch":false,"isInQc":false,"isInWorkflow":false,"isPdf":true,"isPdfUpToDate":true,"isWithdrawnOrRetracted":false,"journal":{"display":true,"email":"[email protected]","identity":"researchsquare","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":true,"externalIdentity":"","sideBox":"","snPcode":"","submissionUrl":"/submission","title":"Research Square","twitterHandle":"researchsquare","acdcEnabled":true,"dfaEnabled":false,"editorialSystem":"","reportingPortfolio":"","inReviewEnabled":false,"inReviewRevisionsEnabled":true},"keywords":"","lastPublishedDoi":"10.21203/rs.3.rs-7923395/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-7923395/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"Topological photonic insulators can robustly transport light along a topologically protected interface and have proven to be a promising platform for light manipulation. 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