Yazar "Ay, Feridun" için Makale Koleksiyonu listeleme
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A comparative device performance assesment of CVD grown MoS2 and WS2 monolayers
Sar, Hüseyin; Özden, Ayberk; Yorulmaz, Büşra; Sevik, Cem; Perkgöz, Nihan Kosku; Ay, Feridun (Springer, 2018)In this study, optical and electronic transport properties of chemical vapor deposition (CVD) grown 2D WS2 and MoS2 based transistors and photodetectors are investigated and compared in ambient air by using 2D flakes grown ... -
Erbium-doped spiral amplifiers with 20 dB of net gain on silicon
Vazquez-Cordova, Sergio A.; Dijkstra, Meindert; Bernhardi, Edward H.; Ay, Feridun; Worhoff, Kerstin; Herek, Jennifer L.; Pollnau, Markus (Optical Soc Amer, 2014)Spiral-waveguide amplifiers in erbium-doped aluminum oxide on a silicon wafer are fabricated and characterized. Spirals of several lengths and four different erbium concentrations are studied experimentally and theoretically. ... -
Extensive mode mapping and novel polarization filter design for ALD grown Al2O3 ridge waveguides
Demirtaş, Mustafa; Özden, Ayberk; Acikbas, Ethem; Ay, Feridun (Springer, 2016)In this work we report on realistic simulations aiming at extending our design knowledge on the fabrication and optimization of highly efficient integrated optical waveguide amplifiers. We focus specifically on atomic layer ... -
Focused-ion-beam nanostructuring of Al2O3 dielectric layers for photonic applications
Ay, Feridun; Worhoff, Kerstin; de Ridder, Rene M.; Pollnau, Markus (IOP Publishing LTD, 2012)In this work, we report on utilization and optimization of the focused-ion-beam technique for the fabrication of nanostructures on Al2O3 waveguides for applications in integrated photonic devices. In particular, the ... -
Low Loss Atomic Layer Deposited Al2O3 Waveguides for Applications in On-Chip Optical Amplifiers
Demirtaş, Mustafa; Odaci, Cem; Perkgöz, Nihan Kosku; Sevik, Cem; Ay, Feridun (IEEE-Inst Electrical Electronics Engineers Inc, 2018)We present the growth and optimization of ultralow loss Si-based Al2O3 planar waveguides, which have a high potential to boost the performance of rare-earth ion doped waveguide devices operating at visible and C-band ...