{"paper_id":"0ebfd91d-5765-483a-91e5-cc4a697756e8","body_text":"Tunable optical fiber cascade filter by magneto-optical effect | 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 Tunable optical fiber cascade filter by magneto-optical effect Shahad I Younus, Anwaar A Al-Dergazly, A K Abass This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-669379/v1 This work is licensed under a CC BY 4.0 License Status: Under Review Version 1 posted 4 You are reading this latest preprint version Abstract Optical filters based on cascade single mode - multimode - single mode fiber structure (SMS) has considerable attention as a reliable optical device the reliability is due to its simplicity, compactness, low cost, all fiber device, low transmission loss, and can be continuously tune the laser wavelength at a specific spectral range. The principle of the operation is based on self- image and multimode interference (MMI) phenomena. A tunable filter was simulated based on cascade single mode-no core-single mode (SNS) fiber structure surrounded by magneto-optical fluid (MOF) using finite element method (FEM), the influence of the no core fiber (NCF) diameter and length on the tunablility and the bandwidth is investigated and optimized. Two materials were adopted as a MOF. The results show that the tunability of the filter can be improved by decreasing the NCF diameter. A continuous wavelength tunability about 37 nm from 1518 to 1555 nm with a bandwidth about 10 nm is obtained. The device is highly stable, inexpensive, provide wide tuning range compared with other tuning methods. This device can be used in optical communication, fiber sensor, spectroscopy, and in fiber laser technology. To the best of our knowledge, this is the first optical fiber MMI tunable filter by magnetic field effect. Electronic Materials and Devices cascade optical fiber finite element method multimode interference magneto-optical effect Full Text Cite Share Download PDF Status: Under Review Version 1 posted Reviewers invited by journal 30 Jun, 2021 Reviews received at journal 30 Jun, 2021 Editor assigned by journal 29 Jun, 2021 First submitted to journal 28 Jun, 2021 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. Our growing team is made up of researchers and industry professionals working together to solve the most critical problems facing scientific publishing. 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-669379\",\"acceptedTermsAndConditions\":true,\"allowDirectSubmit\":false,\"archivedVersions\":[],\"articleType\":\"Research Article\",\"associatedPublications\":[],\"authors\":[{\"id\":36873467,\"identity\":\"aa603526-adcc-4ace-b1c0-3233c17896da\",\"order_by\":0,\"name\":\"Shahad I 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