Prof. Mehmet Ünlü Profile

Prof. Mehmet Ünlü

at TOBB ETÜ

SPIE Involvement:

Author

Publications (13)

Proceedings Article | 18 June 2024 Presentation + Paper

Periodic topology optimization‐based inverse design of slow-light in silicon nitride one-dimensional grating waveguides

Ahmet Sakin, Beyza Akcay, Ahmet Songur, Mehmet Unlu

Proceedings Volume 13012, 1301206 (2024) https://doi.org/10.1117/12.3022492

KEYWORDS: Design, Silicon nitride, Fabrication, Slow light, Genetic algorithms

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Proceedings Article | 10 June 2024 Poster + Paper

Optimized amplitude distributions for grating and side lobe suppression in optical phased array antennas

Ahmet Sakin, Beyza Akcay, Ahmet Songur, Mehmet Unlu

Proceedings Volume 12991, 129911E (2024) https://doi.org/10.1117/12.3022220

KEYWORDS: Arrayed waveguide gratings, Waveguides, Antennas, Design, Silicon, Beam steering, Signal intensity

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Proceedings Article | 10 June 2024 Poster + Paper

Design of polarization-sensitive meta microreflectors in Bragg grating waveguide

Ahmet Sakin, Beyza Akcay, Ahmet Songur, Mehmet Unlu

Proceedings Volume 12991, 129911C (2024) https://doi.org/10.1117/12.3022216

KEYWORDS: Design, Waveguides, Reflection, Reflector design, Simulations, Signal attenuation, Bragg wavelengths, Structural design

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Proceedings Article | 10 June 2024 Poster + Paper

Ultra-miniaturized crossings based on digitized metamaterials for one-dimensional grating waveguides

Ahmet Sakin, Beyza Akcay, Ahmet Songur, Mehmet Unlu

Proceedings Volume 12990, 129900S (2024) https://doi.org/10.1117/12.3022218

KEYWORDS: Waveguides, Silicon, Simulations, Scanning electron microscopy, Magnetism, Electron beam lithography

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Proceedings Article | 6 June 2024 Poster

Asymmetric terahertz spoof surface plasmon polariton antennas with end-fire radiation

Ahmet Canberk Songur, Mesut Demircioglu, Beyza Akcay, Ahmet Oguz Sakin, Mehmet Ünlü

Proceedings Volume PC12994, PC129940J (2024) https://doi.org/10.1117/12.3022208

KEYWORDS: Antennas, Terahertz radiation, Surface plasmon polaritons, Design, Unmanned aerial vehicles, Terahertz technology, Terahertz sources, Telecommunications, Silicon, Millimeter wave sensors

Proceedings Article | 31 May 2022 Poster + Presentation + Paper

Comparison of time-domain antenna performances for the terahertz photoconductive sources and detectors

Ahmet Songur, Mehmet Ünlü

Proceedings Volume 12134, 121340H (2022) https://doi.org/10.1117/12.2622125

KEYWORDS: Antennas, Terahertz radiation, Radiation effects, Distortion, Silicon photonics

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Proceedings Article | 31 May 2022 Poster + Presentation + Paper

Optimizing the performance of the CPW-to-spoof surface plasmon polariton waveguides for 0.3 THz band

Muhammed Unutmaz, Mehmet Ünlü

Proceedings Volume 12134, 121340D (2022) https://doi.org/10.1117/12.2620946

KEYWORDS: Terahertz radiation, Waveguides, Toxic industrial chemicals, Surface plasmon polaritons, Device simulation, Telecommunications, Transistors, Diodes, Transmission electron microscopy, Microscopes

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Proceedings Article | 31 May 2022 Poster + Presentation + Paper

Investigation of the loss performance of the spoof surface plasmon polariton waveguides at 1 THz band

Mesut Demircioglu, Muhammed Unutmaz, Mehmet Ünlü

Proceedings Volume 12134, 121340G (2022) https://doi.org/10.1117/12.2622091

KEYWORDS: Terahertz radiation, Dielectrics, Waveguides, Surface plasmon polaritons, Toxic industrial chemicals, Imaging systems, Silicon, Millimeter wave imaging, Metals, Integrated circuits

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Proceedings Article | 31 May 2022 Presentation + Paper

A 135 degree, spoof surface plasmon polariton bend for 1 THz band

Muhammed Unutmaz, Mesut Demircioglu, Mehmet Ünlü

Proceedings Volume 12134, 1213407 (2022) https://doi.org/10.1117/12.2621832

KEYWORDS: Terahertz radiation, Waveguides, Surface plasmon polaritons, Imaging systems, Device simulation, Integrated circuits, Millimeter wave imaging, Information technology, Wave propagation, System integration

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