{"paper_id":"4c0c5900-d383-4e7f-a13f-db8915607467","body_text":"Sensitivity Enhancement in D-shaped Photonic Crystal Fiber Sensors: Gold versus Silver Plasmonic Layers | 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 Sensitivity Enhancement in D-shaped Photonic Crystal Fiber Sensors: Gold versus Silver Plasmonic Layers Hassan Pakarzadeh, Vahid Sharif, Zahra Rahmanfar, Jamileh Hajivandi This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-4522076/v1 This work is licensed under a CC BY 4.0 License Status: Published Journal Publication published 07 Aug, 2024 Read the published version in Plasmonics → Version 1 posted 11 You are reading this latest preprint version Abstract Surface plasmon resonance (SPR) sensors have attracted great attention in recent years for various applications such as medical diagnosis and bio-chemical materials. Among SPR sensors, D-shaped structures based on photonics crystal fibers (PCFs) have shown very high performance and are easy to use. In this paper, a simple design of SPR sensors based on the D-shaped PCFs with the most optimized geometrical parameters is proposed. Gold and silver are considered as plasmonic layers on the surface of the D-shaped PCF sensor. By performing multiple simulations using the finite-difference eigenmode (FDE) method, various values ​​of gold and silver thicknesses are investigated to achieve the highest sensitivity. The results indicate that the highest sensitivity of 25600 nm/RIU occurs for a gold thickness of 44 nm and an analyte with a refractive index (RI) of 1.41. Meanwhile, for an analyte RI range of 1.29 to 1.40, silver demonstrates greater sensitivity than gold in the same range. photonic crystal fiber surface plasmon resonance D-shaped sensor plasmonic layer Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Published Journal Publication published 07 Aug, 2024 Read the published version in Plasmonics → Version 1 posted Editorial decision: Revision requested 25 Jun, 2024 Reviews received at journal 23 Jun, 2024 Reviewers agreed at journal 18 Jun, 2024 Reviews received at journal 18 Jun, 2024 Reviewers agreed at journal 17 Jun, 2024 Reviewers agreed at journal 12 Jun, 2024 Reviewers agreed at journal 12 Jun, 2024 Reviewers invited by journal 12 Jun, 2024 Submission checks completed at journal 04 Jun, 2024 Editor assigned by journal 04 Jun, 2024 First submitted to journal 03 Jun, 2024 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. 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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-4522076\",\"acceptedTermsAndConditions\":true,\"allowDirectSubmit\":false,\"archivedVersions\":[],\"articleType\":\"Research Article\",\"associatedPublications\":[],\"authors\":[{\"id\":315475891,\"identity\":\"cdd6a864-27e0-41f0-821c-1785a3b12dd7\",\"order_by\":0,\"name\":\"Hassan 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