Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.11851/9053
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dc.contributor.authorSakin, Ahmet O.-
dc.contributor.authorGunesa, Hasan A.-
dc.contributor.authorKurt, Hamza-
dc.contributor.authorUnlua, Mehmet-
dc.date.accessioned2022-11-30T19:27:13Z-
dc.date.available2022-11-30T19:27:13Z-
dc.date.issued2022-
dc.identifier.isbn978-1-5106-5173-9-
dc.identifier.isbn978-1-5106-5172-2-
dc.identifier.issn0277-786X-
dc.identifier.issn1996-756X-
dc.identifier.urihttps://doi.org/10.1117/12.2622120-
dc.identifier.urihttps://hdl.handle.net/20.500.11851/9053-
dc.descriptionConference on Integrated Photonics Platforms II -- APR 03-MAY 20, 2022 -- ELECTR NETWORKen_US
dc.description.abstractThe limited bandwidth of conventional phase-shifter-based antenna arrays, which is caused by steering in different angles at different frequencies named as the beam-squint effect, is a problem that should be taken into consideration for the ultrawide band systems. To overcome this problem, designing optical true time delay (TTD) lines for the antenna arrays is crucial for the development of next-generation, wideband communication, and imaging systems, which employ short pulses for wideband operation. One of the important problems for employing such short pulses is the dispersion during the propagation along the on-chip optical waveguides, which cause the distortion in the pulse shape and decrease in the amplitude of the pulse. Therefore, we propose a one-dimensional (1D) fishbone grating waveguide with a Lego type of step taper on silicon-on-insulator (SOI) substrate, both of which are designed for time-domain operation. The designed grating waveguide/taper pair is excited by a pulsed Gaussian light source, having a FWHM of 90 fs at a center wavelength of 1550 nm, where we investigate the possibility of controlling the dispersion by using SiO2 cladding modulation and taper structure optimization using genetic algorithm. The simulation results show that it is possible to decrease the dispersion in terms of the amplitude of the pulse up to 85%. The simulation results also show that the coupling efficiency from the taper to the waveguide can be increased up to 73%, which also decrease the dispersion of the pulse significantly. The simulated bandwidth of the grating waveguide/taper pair is found to be 56 nm, which allows ultrawide band operation.en_US
dc.description.sponsorshipSPIE,IdEx Univ Strasbourg,CNRS,ICube,Univ Strasbourgen_US
dc.description.sponsorshipScientific and Technical Research Council (TUBITAK) [2210A]; TUBITAK [119E501]en_US
dc.description.sponsorshipH.A.G. acknowledges the partial support from the Scientific and Technical Research Council (TUBITAK) 2210A Grant. This project is funded by TUBITAK 119E501.en_US
dc.language.isoenen_US
dc.publisherSpie-Int Soc Optical Engineeringen_US
dc.relation.ispartofIntegrated Photonics Platforms Iien_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectTime domainen_US
dc.subjectoptical true time delayen_US
dc.subjectgenetic algorithmen_US
dc.subjectslow lighten_US
dc.subjectshort pulseen_US
dc.subjectsilicon photonicsen_US
dc.subjectDelayen_US
dc.titleGenetic Algorithm Based, On-Chip, Fishbone Grating Waveguide and Transition Design for Time-Domain Operationen_US
dc.typeConference Objecten_US
dc.identifier.volume12148en_US
dc.identifier.wosWOS:000838086300018en_US
dc.identifier.scopus2-s2.0-85133142932en_US
dc.institutionauthorÜnlü, Mehmet-
dc.identifier.doi10.1117/12.2622120-
dc.authorscopusid57771669800-
dc.authorscopusid57219229498-
dc.authorscopusid57189350201-
dc.authorscopusid57192393118-
dc.relation.publicationcategoryKonferans Öğesi - Uluslararası - Kurum Öğretim Elemanıen_US
dc.identifier.scopusquality--
dc.ozel2022v3_Editen_US
item.openairetypeConference Object-
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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