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Sobczak G.,Instytut Technologii Materialow Elektronicznych | Sobczak G.,Warsaw University of Technology
Przeglad Elektrotechniczny | Year: 2013

In this paper, there are shown the main trends in development of phase locked arrays of edge emitting laser diodes. There are shown theoretical descriptions of such structures and the most important and interesting technological solutions. Future possibilities of development and the devices manufactured in Poland are described. Source

Agency: Cordis | Branch: FP7 | Program: CP | Phase: ICT-2013.9.3 | Award Amount: 1.18M | Year: 2013

To pave the way towards the widespread application of on-chip mid-infrared(MIR)-pumped nonlinear supercontinuum light sources, we want to introduce a paradigm shift in integrated nonlinear optics. Rather than relying on non-standard waveguide designs, large waveguide footprints, bulky MIR pump lasers and/or limited spectral coverage in strategies that could never comply with the requirements for widespread deployment, we target a major advance based on novel material physics and device design, eliminating these issues. Our goal is to develop a near-infrared(NIR)- and MIR-emitting, ultra-compact on-chip supercontinuum light source by exploiting practically unexplored optical nonlinearities of standard silicon waveguides covered with graphene. This groundbreaking dual-band source will be realized by cascading two devices which are based on graphene-covered standard silicon waveguides, and which enable for the first time broadband self-phase modulation in the MIR and power-efficient second harmonic generation in the NIR within an ultra-compact chip footprint. To ensure that the entire supercontinuum device including the pump laser is compact, we will in addition develop a novel, small-sized, and practical modelocked MIR Tm-Ho fiber laser to pump the supercontinuum generation. These breakthroughs carry a highly novel and foundational character, and fit very well within the framework of the FET Open FP7-ICT-2013-C call. Since the partners involved in this project have both the knowledge and the equipment to model, design, fabricate and pump graphene-based nonlinear optical devices, our consortium holds all necessary skills required to successfully carry out this high-gain/high-risk project. In doing so, we will lay the foundations for graphene-on-silicon-based nonlinear photonic integrated circuits, and at the same time pave the way to the extensive use of on-chip supercontinuum light sources in real-life applications.

Instytut Technologii Materialow Elektronicznych | Date: 2011-06-07

The present invention relates to a method for manufacturing graphene by vapour phase epitaxy on a substrate comprising a surface of SiC, characterized in that the process of sublimation of silicon from the substrate is controlled by a flow of an inert gas or a gas other than an inert gas through the epitaxial reactor. The invention also relates to graphene obtained by this method.

Agency: Cordis | Branch: FP7 | Program: CSA | Phase: ICT-2009.3.7 | Award Amount: 1.84M | Year: 2010

Micro-optics holds tremendous potential for SMEs and large companies to develop competitive products and to boost product innovation. Micro-optics however continuously requires advanced knowledge as well as a complex technology supply chain, which are very often not affordable. This project targets to pro-actively provide companies with timely, cost-effective, investment-free Access to a unique one-stop-shop European Centre To Micro-Optics Expertise, Services and Technologies ACTMOST. The access of predominantly SMEs to leading edge technology and knowledge provided by the ACTMOST partners will be realized by them through focused collaborations in so called user projects and through hands-on training of industry staff in highly advanced laboratories of the ACTMOST research institutions. ACTMOST also targets to develop a business model which would enable continuation of SME and company support without public funding. As such ACTMOST intends to be a major driving force to sustainably support European industry in keeping a leading position in micro-optic and micro-photonic enhanced products, thus strengthening the competitiveness of Europe and creating new jobs.

Agency: Cordis | Branch: FP7 | Program: CP-FP | Phase: NMP-2007-1.1-2 | Award Amount: 5.09M | Year: 2008

Growth of eutectics is recognized as a paradigm for pattern-forming. Self-organised structures of size scales reaching down to submicron and nano scale regime emerge due to the interplay of chemical diffusion and capillarity. The fundamentally novel CONCEPT of the present proposal is to utilize - for the first time - the eutectic self-organisation mechanism for preparation of multi-component and multi-scale structures with controlled physicochemical and structural properties, with geometrical motifs capable of generating novel, predictable and controllable electromagnetic functionalities. This requires a deeper understanding of factors influencing eutectic self-organisation mechanism on a submicron/nanoscale. Accordingly, the main topic and activity of the present proposal is to generate new knowledge of the mechanism of eutectic self-organisation on this scale, by combining state-of-the-art experimental and modelling techniques. This new understanding of the underlying processes of eutectic self-organisation will then be used for the prediction and design of self-organised multi-component and multi-scale structures with controlled physicochemical and structural properties. This will be combined with the electromagnetic design of complex structures which can generate revolutionary electromagnetic functionalities. This will result in: a) the ability to predict the occurrence of patterns in eutectic systems, b) knowledge on how to design nanopatterned materials with controlled physicochemical and structural properties, c) methodologies to design and to fabricate self-organised multi-component and multi-scale structures with revolutionary electromagnetic functionalities, and d) the experimental realisation of these self-organised systems. The planned research is expected to open new horizons for utilizing self-organised structures in the development of the next generation of materials for photonic application that will exhibit revolutionary properties.

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