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In this paper, we report our recent results about slotted photonic structures for hybrid on-chip integration in silicon photonics. Explored schemes cover hollow core waveguide optimized micro-ring resonators, slot photonic crystal cavities, and slow light slotted waveguides, all aiming at the enhancement of light-matter interactions. A comparison between several of these approaches is drawn regarding...
In this paper, we propose a novel method to experimentally determine the linear absorption coefficient (LAC) of graphene-silicon hybrid waveguides (GSHWs) by a symmetrical add-drop silicon microring resonator. Experimental results show that the LAC of a GSHW has an average value of 0.23 dB/µm. Our approach does not depend on the fiber coupling, waveguide end facets etc. and thus, is promising for...
The emerging application of organic materials to the integrated photonics led to the definition of the Silicon Organic Hybrid (SOH) technology, that is a promising approach to bring active functionalities on an intrinsically passive silicon substrate. Erbium-doped molecular materials were demonstrated to provide IR emission in the C band when grown on silicon as solution processed thin films, enabling...
The insertion of mobile ions and coupled changes of electron concentration are exploited to induce a non-volatile and reversible change of the optical properties of mixed ionic and electronic conductors (MIECs). The physical mechanisms responsible for the change of the real and imaginary part of the MIECs' refractive index upon ion-intercalation are extensively investigated in the visible and near-IR...
Energy efficient Wavelength Division Multiplexing (WDM) is the key to satisfying the future bandwidth requirements of datacentres. As the silicon photonics platform is regarded the only technology able to meet the required power and cost efficiency levels, the development of silicon photonics compatible narrow linewidth lasers is now crucial. We discuss the requirements for such laser systems and...
Grating couplers realized on a Silicon-on-Insulator (SOI) platform are an efficient means of coupling light from a single-mode optical fiber into silicon photonic waveguides. Grating couplers can be 1D, coupling light with a fixed polarization into a single waveguide, or 2D, in order to couple light with unknown polarization into a pair of silicon waveguides. In this work we review computational approaches,...
The integration of active materials on silicon is emerging as a promising field in silicon photonics to improve the performance metrics of key photonic components, in particular active components. Active materials allow tuning their optical properties as function of external stimuli. Amongst them, vanadium dioxide (VO2) has been largely investigated for different applications due to its controllable...
Towards Single Mode Fiber (SMF) based optical connections in Data Centers (DCs) we are presenting the SM platform of the EU FP7 project PhoxTror. The major building blocks envisioned in this area are a 3D transceiver with a capacity of up to 480 Gb/s and a 3D router with 480 Gb/s throughput based on a Si photonics switching matrix. Towards this goal it is presented the basic 2×2 switching elements,...
We demonstrate recent advances in the area of optical RAM-based cache memory technology and in the area of optical interconnect technologies for allowing the deployment of a disintegrated computational setting where off-chip optical cache modules can be connected to cache-light Chip Multiprocessors and DRAM modules. We report on recent experimental results obtained within the FP7 project RAMPLAS and...
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