Geometric Optimization and IPA-Induced Dispersion Tuning in Solid-Core Photonic Crystal Fibers

Geometric Optimization and IPA-Induced Dispersion Tuning in Solid-Core Photonic Crystal Fibers | 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 Research Article Geometric Optimization and IPA-Induced Dispersion Tuning in Solid-Core Photonic Crystal Fibers Zekeriya Mehmet Yuksel, Hasan Oguz, Ozgur Onder Karakilinc, Halil Berberoglu, and 3 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-6957460/v1 This work is licensed under a CC BY 4.0 License Status: Published Journal Publication published 31 Oct, 2025 Read the published version in Optical and Quantum Electronics → Version 1 posted 10 You are reading this latest preprint version Abstract This study presents a comprehensive numerical investigation of solid-core photonic crystal fibers (PCFs) with circular and hexagonal cladding geometries, aiming to optimize key optical parameters for nonlinear photonics and environmental sensing applications. Full-vectorial simulations using FDTD (Lumerical), PWE (MPB), and FDE (MODE) are employed to analyze the influence of structural parameters—core diameter ( d c ), pitch (Λ), and air filling fraction—on zero-dispersion wavelength (ZDW), nonlinear coefficient ( γ ), effective mode area (A eff ), and confinement loss. The results reveal that decreasing d c from 2.4 µm to 1.4 µm enables ZDW tuning from 791 nm to 646 nm, alongside a 72% increase in γ , from 72 W −1 km −1 to 124 W −1 km −1 . The impact of isopropyl alcohol (IPA) infiltration is also examined, demonstrating a significant red-shift in ZDW and reduced index contrast that deteriorates confinement and dispersion slope. These findings establish a robust design framework for PCFs that combines high nonlinear efficiency with resilience against contamination, offering valuable guidance for supercontinuum generation and chemical sensing applications. Photonic crystal fiber fused Silica fibers computational photonics Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Published Journal Publication published 31 Oct, 2025 Read the published version in Optical and Quantum Electronics → Version 1 posted Editorial decision: Revision requested 27 Aug, 2025 Reviews received at journal 31 Jul, 2025 Reviewers agreed at journal 03 Jul, 2025 Reviews received at journal 02 Jul, 2025 Reviewers agreed at journal 01 Jul, 2025 Reviewers agreed at journal 30 Jun, 2025 Reviewers invited by journal 29 Jun, 2025 Editor assigned by journal 24 Jun, 2025 Submission checks completed at journal 24 Jun, 2025 First submitted to journal 23 Jun, 2025 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. 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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-6957460","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":478928207,"identity":"8a41b895-2864-4bce-8761-6758500c3415","order_by":0,"name":"Zekeriya Mehmet 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Full-vectorial simulations using FDTD (Lumerical), PWE (MPB), and FDE (MODE) are employed to analyze the influence of structural parameters—core diameter (\u003cem\u003ed\u003c/em\u003e\u003csub\u003e\u003cem\u003ec\u003c/em\u003e\u003c/sub\u003e), pitch (Λ), and air filling fraction—on zero-dispersion wavelength (ZDW), nonlinear coefficient (\u003cem\u003eγ\u003c/em\u003e), effective mode area (A\u003csub\u003eeff\u003c/sub\u003e), and confinement loss. The results reveal that decreasing \u003cem\u003ed\u003c/em\u003e\u003csub\u003e\u003cem\u003ec\u003c/em\u003e\u003c/sub\u003e from 2.4 µm to 1.4 µm enables ZDW tuning from 791 nm to 646 nm, alongside a 72% increase in \u003cem\u003eγ\u003c/em\u003e, from 72 W\u003csup\u003e−1 \u003c/sup\u003ekm\u003csup\u003e−1 \u003c/sup\u003eto 124 W\u003csup\u003e−1 \u003c/sup\u003ekm\u003csup\u003e−1\u003c/sup\u003e. The impact of isopropyl alcohol (IPA) infiltration is also examined, demonstrating a significant red-shift in ZDW and reduced index contrast that deteriorates confinement and dispersion slope. 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