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dc.contributor.authorNeşeli, Berkay
dc.contributor.authorBor, Emre
dc.contributor.authorKurt, Hamza
dc.contributor.authorTurduev, Mirbek
dc.identifier.citationNeseli, B., Bor, E., Kurt, H., and Turduev, M. (2019, July). Transmission Enhanced Wavelength Demultiplexer Design Based on Photonic Crystal Waveguide with Gradually Varied Width. In 2019 21st International Conference on Transparent Optical Networks (ICTON) (pp. 1-4). IEEE.en_US
dc.description21st International Conference on Transparent Optical Networks, ICTON ( 2019: Angers, France )en_US
dc.description.abstractIn this study, we propose the design of photonic crystals with linearly tapered waveguide such that waveguide width is gradually varied. Four drop-channels are included to implement wavelength demultiplexing applications. Here, a tapering of the waveguide has been chosen to localize propagating light within the desired positions. Afterwards, the corresponding drop-channels have been opened to confine the light with the targeted wavelengths. The designed structure consists of cylindrical alumina (Al2O3) dielectric rods and operates at microwave frequencies between 13.2 GHz and 15.3 GHz. An optimization algorithm is applied to enhance transmission efficiencies of the drop-channels and to minimize possible cross-talks between the channels by optimally modulating the position of the dielectric rods inside the channels which form cavity-coupling regions. The optimization algorithm is incorporated with the finite-difference time-domain method to evaluate the transmission efficiencies of the drop-channels for the instant designed structure. The physical mechanism of wavelength demultiplexing is related to slowing down and trapping of light in the tapered waveguide and its coupling to drop-channels for selected microwave wavelengths at different positions. Moreover, an experimental verification of the numerical analyses is demonstrated in the microwave regime and corresponding results will be shared in the conference. © 2019 IEEE.en_US
dc.publisherIEEE Computer Societyen_US
dc.relation.ispartof2019 21st International Conference on Transparent Optical Networks (ICTON)
dc.subjectOptical waveguidesen_US
dc.subjectphotonic crystalsen_US
dc.subjectwavelength division multiplexingen_US
dc.subjectfinite difference methodsen_US
dc.subjectslow lighten_US
dc.titleTransmission enhanced wavelength demultiplexer design based on photonic crystal waveguide with gradually varied widthen_US
dc.relation.journalInternational Conference on Transparent Optical Networksen_US
dc.contributor.departmentTOBB ETU, Faculty of Engineering, Department of Electrical & Electronics Engineeringen_US
dc.contributor.departmentTOBB ETÜ, Mühendislik Fakültesi, Elektrik ve Elektronik Mühendisliği Bölümütr_TR
dc.contributor.tobbetuauthorKurt, Hamza
dc.relation.publicationcategoryKonferans Öğesi - Uluslararası - Kurum Öğretim Elemanıtr_TR

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