Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.11851/777
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dc.contributor.authorTurduev, Mirbek-
dc.contributor.authorBor, Emre-
dc.contributor.authorLatifoğlu, Çağrı-
dc.contributor.authorGiden, İbrahim Halil-
dc.contributor.authorHanay, Y. Sinan-
dc.contributor.authorKurt, Hamza-
dc.date.accessioned2019-03-20T11:16:22Z
dc.date.available2019-03-20T11:16:22Z
dc.date.issued2018-07-15
dc.identifier.citationTurduev, M., Bor, E., Latifoglu, C., Giden, I. H., Hanay, Y. S., & Kurt, H. (2018). Ultracompact Photonic Structure Design for Strong Light Confinement and Coupling Into Nanowaveguide. Journal of Lightwave Technology, 36(14), 2812-2819.en_US
dc.identifier.urihttps://ieeexplore.ieee.org/document/8328831-
dc.identifier.urihttps://hdl.handle.net/20.500.11851/777-
dc.description.abstractDifferent optimization algorithms have recently been utilized to design and improve the performance of many nanophotonic structures. We present the design of a compact photonic structure by an approach based on machine learning. Three-dimensional finite-difference time-domain method is integrated with a machine learning algorithm in order to design a photonic structure. In particular, a subwavelength focusing lens structure that operates at telecom wavelengths is designed to have desired beam properties such as subwavelength full-width at half-maximum value of 0.155 λ and suppressed side-lobe levels at focal point, where λ denotes the wavelength of incident light and equals to 1550 nm. The designed compact lens structure has the footprint of 2 × 1 μ m2 with a slab thickness of 280 nm, which is the smallest photonic lens for subwavelength focusing of light to date comparing to its conventional ones. The focusing mechanism of designed lens structure is explained with the help of applying discrete Fourier transform to the two-dimensional dielectric distribution of the structure. It is also shown that, due to its strong light confinement property, the designed lens structure can be used as a waveguide-to-waveguide optical coupling device with a beamwidth compression ratio of 10:1 by integrating a nanowaveguide with the width of 200 nm to the output surface of lens structure. Normalized transmission efficiency of the optical coupling device is calculated as high as 0.62 at the wavelength of 1550 nm. The outcomes of the presented study show that machine learning can be beneficial for designing efficient compact photonic structures.en_US
dc.description.sponsorshipNational Council for Scientific Research[116F182]
dc.language.isoenen_US
dc.publisherInstitute of Electrical and Electronics Engineers Inc.en_US
dc.relation.ispartofJournal of Lightwave Technologyen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectLensesen_US
dc.subjectMachine learning algorithmsen_US
dc.subjectNanophotonicsen_US
dc.subjectPhotonic integrated circuitsen_US
dc.titleUltracompact Photonic Structure Design for Strong Light Confinement and Coupling Into Nanowaveguideen_US
dc.typeArticleen_US
dc.departmentFaculties, Faculty of Engineering, Department of Electrical and Electronics Engineeringen_US
dc.departmentFakülteler, Mühendislik Fakültesi, Elektrik ve Elektronik Mühendisliği Bölümütr_TR
dc.identifier.volume36
dc.identifier.issue14
dc.identifier.startpage2812
dc.identifier.endpage2819
dc.identifier.wosWOS:000435177900001en_US
dc.identifier.scopus2-s2.0-85044736831en_US
dc.institutionauthorKurt, Hamza-
dc.identifier.doi10.1109/JLT.2018.2821361-
dc.identifier.doi10.1109/JLT.2018.2821361-
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
item.openairetypeArticle-
item.languageiso639-1en-
item.grantfulltextnone-
item.fulltextNo Fulltext-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.cerifentitytypePublications-
crisitem.author.dept02.5. Department of Electrical and Electronics Engineering-
Appears in Collections:Elektrik ve Elektronik Mühendisliği Bölümü / Department of Electrical & Electronics Engineering
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection
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