Showing papers by "Odysseas Tsilipakos published in 2011"

A 320 Gb/s-Throughput Capable 2 $\,\times\,$ 2 Silicon-Plasmonic Router Architecture for Optical Interconnects

Abstract: We demonstrate a 2 × 2 silicon-plasmonic router architecture with 320 Gb/s throughput capabilities for optical interconnect applications The proposed router platform relies on a novel dual-ring Dielectric-Loaded Surface Plasmon Polariton (DLSPP) 2 × 2 switch heterointegrated on a Silicon-on-Insulator (SOI) photonic motherboard that is responsible for traffic multiplexing and header processing functionalities We present experimental results of a Poly-methyl-methacrylate (PMMA)-loaded dual-resonator DLSPP waveguide structure that uses two racetrack resonators of 55 μm radius and 4 μ m-long straight sections and operates as a passive add/drop filtering element We derive its frequency-domain transfer function, confirm its add/drop experimental spectral response, and proceed to a circuit-level model for dual-ring DLSPP designs supporting 2 × 2 thermo-optic switch operation The validity of our circuit-level modeled 2 × 2 thermo-optic switch is verified by means of respective full vectorial three-dimensional Finite Element Method (3D-FEM) simulations The router setup is completed by means of two 4 × 1 SOI multiplexing circuits, each one employing four cascaded second order micro-ring configurations with 100 GHz spaced resonances Successful interconnection between the DLSPP switching matrix and the SOI circuitry is performed through a butt-coupling design that, as shown via 3D-FEM analysis, allows for small coupling losses of as low as 26 dB The final router architecture is evaluated through a co-operative simulation environment, demonstrating successful 2 × 2 routing for two incoming 4-wavelength Non-Return-to-Zero (NRZ) optical packet streams with 40 Gb/s line-rates

Thermo-optic plasmo-photonic mode interference switches based on dielectric loaded waveguides

Abstract: We demonstrate an efficient thermo-optic dielectric loaded surface plasmon polariton waveguide (DLSPPW) 2 × 2 switch using a high thermo-optic coefficient polymer and a dual mode interference configuration. Unlike previous configurations relying on single-mode waveguide circuitry, the switch we consider is based on the interference between a plasmonic and a low-damping photonic mode of the DLSPPW, thus leading to the minimization of insertion losses of the device. Switching extinction ratios of 7 dB are measured for a compact 119 μm-long device. The overall device performances are in good agreement with numerical simulations performed using the beam propagation method.

Thermo-optic microring resonator switching elements made of dielectric-loaded plasmonic waveguides

Abstract: Thermo-optic switching elements made of dielectric-loaded plasmonic (DLSPP) waveguides are theoretically investigated by utilizing the three-dimensional vector finite element method. The configurations considered employ microring resonators, whose resonant frequency is varied by means of thermal tuning. First, a classic add-drop filter with parallel access waveguides is examined. Such a component features very poor drop port extinction ratio (ER). We therefore extend the analysis to add-drop filters with perpendicular access waveguides, which are found to exhibit superior drop port ERs, due to interference effects associated with the drop port transmission. In the process, the performance of a DLSPP waveguide crossing is also assessed, since it is a building block of those filters whose bus waveguides intersect. An elliptic tapering scheme is proposed for minimizing cross talk and its effect on the filter performance is explored. The dual-resonator add-drop filter with perpendicular bus waveguides and an ...

Computational techniques for the analysis and design of dielectric-loaded plasmonic circuitry

Abstract: The finite element and the beam propagation method, two widely used methods in photonics, are utilized for the analysis of plasmonic components based on the dielectric-loaded plasmonic waveguide. Two components are chosen as examples and are subsequently numerically investigated by employing the aforementioned methods, in order to demonstrate their applicability in plasmonics. Specifically, a microring resonator add-drop filter and a Mach–Zehnder interferometric switch are analyzed by means of the finite element and the beam propagation method, respectively. The formulation adopted is clearly presented in both cases and the case-dependent implementation details are thoroughly discussed.

Boundary condition for the efficient excitation and absorption of hybrid waveguide modes in finite element formulations

Abstract: A boundary condition capable of efficiently exciting and absorbing hybrid waveguide modes is derived for use in the context of the finite element method.Its performance is assessed in two cases, that is, a silicon and a plasmonic waveguide, and compared with that of the standard absorbing boundary condition. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett 53:2626–2631, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26364

10 Gb/s transmission and thermo-optic resonance tuning in silicon-plasmonic waveguide platform

Abstract: The first system-level experimental results of hybrid Si-DLSPP structures incorporated into a SOI chip are reported We demonstrate over 7nm thermo-optical tuning of a Si-Plasmonic racetrack-resonator and verify error-free 10Gb/s transmission through 60um Si-Plasmonic waveguide

Parametric study of dielectric loaded surface plasmon polariton add-drop filters for hybrid silicon/plasmonic optical circuitry

Abstract: Surface plasmons polaritons are electromagnetic waves propagating along the surface of a conductor Surface plasmons photonics is a promising candidate to satisfy the constraints of miniaturization of optical interconnects This contribution reviews an experimental parametric study of dielectric loaded surface plasmon waveguides ring resonators and add-drop filters within the perspective of the recently suggested hybrid technology merging plasmonic and silicon photonics on a single board (European FP7 project PLATON "Merging Plasmonic and Silicon Photonics Technology towards Tb/s routing in optical interconnects") Conclusions relevant for dielectric loaded surface plasmon switches to be integrated in silicon photonic circuitry will be drawn They rely on the opportunity offered by plasmonic circuitry to carry optical signals and electric currents through the same thin metal circuitry The heating of the dielectric loading by the electric current enables to design low foot-print thermo-optical switches driving the optical signal flow

Dielectric-loaded plasmonic switching elements and circuits

Abstract: We provide a thorough theoretical investigation of switching elements made of dielectric-loaded surface plasmon polariton waveguides that can meet the practical requirements of board-to-board multi-wavelength optical interconnects. For this purpose, advanced numerical techniques including the finite element method (FEM) and the beam propagation method (BPM) have been employed.