Nanoantenna couplers for metal-insulator-metal waveguide interconnects
Okyay, A., K.
Proceedings of SPIE - The International Society for Optical Engineering
Item Usage Stats
MetadataShow full item record
State-of-the-art copper interconnects suffer from increasing spatial power dissipation due to chip downscaling and RC delays reducing operation bandwidth. Wide bandwidth, minimized Ohmic loss, deep sub-wavelength confinement and high integration density are key features that make metal-insulator-metal waveguides (MIM) utilizing plasmonic modes attractive for applications in on-chip optical signal processing. Size-mismatch between two fundamental components (micron-size fibers and a few hundred nanometers wide waveguides) demands compact coupling methods for implementation of large scale on-chip optoelectronic device integration. Existing solutions use waveguide tapering, which requires more than 4λ-long taper distances. We demonstrate that nanoantennas can be integrated with MIM for enhancing coupling into MIM plasmonic modes. Two-dimensional finite-difference time domain simulations of antennawaveguide structures for TE and TM incident plane waves ranging from λ = 1300 to 1600 nm were done. The same MIM (100-nm-wide Ag/100-nm-wide SiO2/100-nm-wide Ag) was used for each case, while antenna dimensions were systematically varied. For nanoantennas disconnected from the MIM; field is strongly confined inside MIM-antenna gap region due to Fabry-Perot resonances. Major fraction of incident energy was not transferred into plasmonic modes. When the nanoantennas are connected to the MIM, stronger coupling is observed and E-field intensity at outer end of core is enhanced more than 70 times. © 2010 SPIE.
Finite difference time domain method
Metal insulator boundaries
Optical signal processing
Semiconductor insulator boundaries
Surface plasmon resonance
Permalink (Please cite this version)http://hdl.handle.net/11693/28439
Showing items related by title, author, creator and subject.
Large area compatible broadband superabsorber surfaces in the VIS-NIR spectrum utilizing metal-insulator-metal stack and plasmonic nanoparticles Dereshgi, S. A.; Okyay, A. K. (OSA - The Optical Society, 2016)Plasmonically enhanced absorbing structures have been emerging as strong candidates for photovoltaic (PV) devices. We investigate metal-insulator-metal (MIM) structures that are suitable for tuning spectral absorption ...
Visualization of one-dimensional diffusion and spontaneous segregation of hydrogen in single crystals of VO2 Kasirga, T. S.; Coy, J. M.; Park, J. H.; Cobden, D. H. (Institute of Physics Publishing, 2016-07)Hydrogen intercalation in solids is common, complicated, and very difficult to monitor. In a new approach to the problem, we have studied the profile of hydrogen diffusion in single-crystal nanobeams and plates of VO2, ...
Atar F.B.; Battal, E.; Aygun L.E.; Daglar, B.; Bayindir, M.; Okyay, A., K. (2013)We demonstrate a novel semiconductor-less photovoltaic device and investigate the plasmonic effects on this device structure. The device is made of metal and dielectric layers and the operation is based on hot carrier ...