Sarre, United Kingdom
Sarre, United Kingdom

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Agency: European Commission | Branch: FP7 | Program: CP | Phase: ICT-2009.3.7 | Award Amount: 11.62M | Year: 2010

The Mode-Gap project targets the 100 fold enhancement of the overall capacity of broadband core networks, and seeks to provide Europe with a lead in the development of the next generation internet infrastructure that will soon be desperately needed if we are to keep pace with societies ever increasing data-transmission requirements. It is now recognized that research results are within a factor of 2 of fundamental capacity limits, bounded by fibre nonlinearity and the Shannon Limit and radical approaches now need to be investigated if we are to avert grid-lock on the internet. Mode-Gap will develop multi-mode photonic band gap long haul transmission fibres, and associated enabling technologies. These fibres offer the potential of order of magnitude capacity increases through the use of multiple-input-multiple-output operation of the multi-mode fibre capacity and further order of magnitude capacity increases through the ultra low loss and ultra-low nonlinearity offered by multi-mode photonic bandgap fibre.Specifically MODE-GAP will:\tDevelop ultra-low loss (0.1 dB/km) multi-mode (>10 modes) photonic band gap transmission fibre (MM-PBGF).\tDevelop novel rare earth doped optical amplifiers for the new transmission windows necessary for the achievement of ultra-long links.\tDevelop sources and detector arrays operating within the 1.8 to 2.1 um region\tDevelop MIMO arrangements for coupling source arrays to multi-mode fibre and multi-mode fibre to detector arrays\tDevelop MIMO and dispersion compensation signal processing algorithms applicable to both conventional solid core (glass and POF) fibres and MM-PBGF.MODE-GAP is therefore fully aligned with the objectives of ICT-2009.3.7 and directly addresses several of its target outcomes by developing photonics technologies, components and (sub) systems driven by key applications/social needs and using them to fulfil the EU vision of future-proof networks and systems enabling unlimited bandwidth enablingmore optical processing and very high spectral-density transmission and the reductionof power consumption at the system and component level with the ultimate goal ofenabling increasing information throughput. If successful, the MODE-GAP technologywill have a significant impact in enabling future proof networks and systems ofincreasing information throughput. Without such a breakthrough the internet of thefuture will be severely compromised. The fundamental research needed to avoid this needs tobe undertaken now.

Banos R.,Polytechnic University of Valencia | Garcia-Munoz V.,Phoenix Photonics Ltd. | Pastor D.,Polytechnic University of Valencia | Amaya W.,ICFO - Institute of Photonic Sciences
IEEE Photonics Technology Letters | Year: 2013

We present rectangular global envelope coherent direct sequence en/decoders for wavelength division multiplexing (WDM)-optical code division multiple access applications. The device presents balanced insertion loss and sharp edges for optimum DWDM channeling. Experimental results using 5 and 1 100-GHz sub-bands en/decoders demonstrate the applicability of these devices both for broadcasting and point-to-point applications. © 1989-2012 IEEE.

Jung Y.,University of Southampton | Alam S.,University of Southampton | Li Z.,University of Southampton | Dhar A.,University of Southampton | And 6 more authors.
Optics Express | Year: 2011

We present the first demonstration of a multimode (two modegroup) erbium-doped fiber amplifier for Space Division Multiplexed (SDM) applications and demonstrate various design and performance features of such devices. In particular we experimentally demonstrate that differential modal gains can be controlled and reduced both by fiber design and control of the pump field distribution. Using a suitably designed fiber we demonstrate simultaneous modal gains of ∼20dB for different pair-wise combinations of spatial and polarization modes in an EDFA supporting amplification of 6 distinct modes. © 2011 Optical Society of America.

Agency: GTR | Branch: EPSRC | Program: | Phase: Research Grant | Award Amount: 777.15K | Year: 2015

As recently discussed by the Wall Street Journal, the remarkable success of the internet may be attributed to the tremendous capacity of unseen underground and undersea optical cables and the associated technologies. Indeed, the initial surge in web usage in the mid-1990s coincides with the first optically amplified transatlantic cable network allowing ready access to information otherwise inaccessible. Tremendous progress has been made since then, and since the introduction of the single mode optical fibre network by BT in 1983 all developments have exploited the same physical infrastructure, enabling return on investment over three decades in time and almost five orders of magnitude in capacity. However, of equal importance have been the last mile actually connecting customers to the network. Whilst growth in the last century was supported by the existing copper infrastructure, todays networks are more technologically fractured, split between (in order of capacity, ranging from a few kbit/s to a few Gbit.s) this legacy network, satellite distribution (plagued by poor latency), wireless networks, hybrid fibre/copper (eg BT Infinity), coaxial networks (cable TV), passive optical networks and point to point optical networks. Each of these solutions offer unique features suited to todays market, enabling competition between network operators (eg BT, Virgin, EE) as well as service providers. However, with the exception of fibre based solutions the potential for further capacity growth is limited. As demand for communication services applications continue to grow in number (e.g. Twitter, YouTube, Facebook, etc.) and in bandwidth (e.g. HDTV, 4k video...), all parts of the communication systems carrying this traffic must be able to operate at higher and higher speeds. This ever-growing capacity demand can only be handled by continually upgrading the capacity of all parts of the network, including long-haul links between major cities, as well as the critical last mile distribution networks ending at or near the customer premises which are the focus of this project. In UPON, rather than continuing to introduce this series of platforms, each optimised for a specific application and data rate, we will identify the network configuration which allows the maximum possible capacity per user (with a single connection), considering both the limitations of the access network itself (arising from trade-off between nonlinearity and noise) and the practically achievable capacity in the core network. This unique approach will allow the development of a single, optimised network configuration with the highest possible growth potential. By considering techno-economic modelling as a fundamental component of the network design, with equal weight to technological constraints, will also identify, propose and demonstrate cost effective evolution scenarios. These scenarios will enable the gradual roll out of network capacity and customer demand and bandwidth intensive applications are developed over the next decades. This will be achieved in three phases: Experimental and theoretical analysis, of the impact of geographical layout on the signal loss, of the impact of various forms of optical distortions - most importantly nonlinear distortions where the light intensity alters the refractive index of the fibre itself, and cost; Development of novel technologies to enhance the achievable data rates for each customer, specifically exploiting the unique properties of a new form of optical amplifier the Fibre Optic Parametric Amplifier, and new transmission fibres specifically designed for access applications; Experimental demonstrations proving the feasibility of the UPON configuration and influencing the decision making processes within major network operators. If UPON is successful, it will pave the way for the highest possible connectivity between people, offering unprecedented quality of experience, at the optimum cost.

Jung Y.,University of Southampton | Chen R.,Phoenix Photonics Ltd. | Ismaeel R.,University of Southampton | Brambilla G.,University of Southampton | And 3 more authors.
Optics Express | Year: 2013

We experimentally demonstrate 2 2 and 3 3 fused fiber couplers made from dual mode fiber. A unique mode dependent power transfer characteristics as a function of pulling length is obtained that support various optical functionalities. Exploiting this we demonstrate several devices of interest for mode division multiplexed data transmission including LP11 mode filter, LP11 mode tap coupler, and 50:50 power splitter for both LP01 and LP11 modes. ©2013 Optical Society of America.

Giles I.,Phoenix Photonics Ltd. | Obeysekara A.,University of Southampton | Chen R.,Phoenix Photonics Ltd. | Giles D.,Phoenix Photonics Ltd. | And 2 more authors.
IEEE Photonics Technology Letters | Year: 2012

The use of multimode fibers in mode division multiplexed space-division multiplexing systems offers one solution to the capacity limitations of single-mode fiber transmission. Passive components to control the individual modes in few-mode fiber (FMF) are key elements to build more complex modules and components necessary for a high performance system. Fiber-based mode converters are important elements in the FMF mux/demux, and long-period gratings have been investigated to provide mode conversion in two-and four-mode fibers. A method to separate and monitor the modes in real time is described as the basis of a method to measure the individual modal performance of a component during fabrication. © 2012 IEEE.

Giles I.,Phoenix Photonics Ltd. | Obeysekara A.,University of Southampton | Chen R.,Phoenix Photonics Ltd. | Giles D.,Phoenix Photonics Ltd. | And 2 more authors.
2012 IEEE Photonics Society Summer Topical Meeting Series, PSST 2012 | Year: 2012

Fiber based mode converters and mode splitters are important elements in the FMF mux./demux. Long Period Gratings (LPGs) have been investigated and results presented together with a potential technique for real time mode monitoring during manufacture. © 2012 IEEE.

Giles I.P.,Phoenix Photonics Ltd | Chen R.,Phoenix Photonics Ltd | Garcia-Munoz V.,Phoenix Photonics Ltd
Optics InfoBase Conference Papers | Year: 2014

All-fiber components offer an effective technology option for passive multiplexers and demultiplexers for few mode fiber transmission systems. New component options to meet the requirements are being explored for individual and mode group transmission. © OSA 2014.

Agency: GTR | Branch: Innovate UK | Program: | Phase: Smart - Development of Prototype | Award Amount: 200.61K | Year: 2011

Rapid information transmission has become of primary importance in modern society. Increasing the level of information that is immediately available in the home or business has become a key driver for telecommunications technologies. The industry continues to develop technology to meet the ever increasing internet demand and provide low cost broadband capability. Photonics and transmission through optical fibres has become a prime technology base to provide current communication networks and will continue to be for foreseeable future networks. We are approaching the ‘capacity crunch’ very quickly and alternative methods will be required to continue to meet the ever increasing demand for bandwidth. A range of strategies are being developed by researchers throughout the world which include, different coding formats, increased data rates, novel fibres and novel transmission systems. These advanced optical fibre networks need to manipulate light within the fibre effectively, and a range of components offering different functionality have been developed. In support of this growing market test and measurement instrumentation is being continuously developed to measure, component parts and full systems. The single mode optical fibre supports two polarization modes, which has been exploited in polarization multiplexed systems to increase fibre capacity, but for high bit rate >40Gbit/s systems it can degrade the optical signal through PMD (Polarization Mode Dispersion). This project is targeted at optical fibre instrumentation to control and analyse the state of polarization of the light within the fibre. It will take a modular approach for a range of instrumentation to measure the polarization properties of components and systems. Based on advanced passive all-fibre components Phoenix will develop PC controllable instruments to modify, measure and control the state of polarization.

Agency: European Commission | Branch: H2020 | Program: SME-1 | Phase: ICT-37-2014-1 | Award Amount: 71.43K | Year: 2015

The business concept is to provide advanced optical fibre components, modules and sub-systems utilising advanced, new fibres; few mode fibre (FMF), multi-core fibre (MCF). Sensing systems based on these new fibres and space division multiplexing (SDM) systems, for enhancing future network capacity, are being developed, but the problem is that there are no commercially available component products to build these systems. The project objective is to develop a range of optical fibre component, module and sub-system products for FMF and MCF solutions in network and sensing applications. Basic building block components and fully integrated multiplexers and amplifiers for high channel count systems will be developed. Demand for components utilising these new fibres is continuing to increase and technical specifications are developing. Within this project Phoenix will have the resource to work with the customer, to develop a required specification of product and supply to the customers needs. The feasibility assessment will enable a full commercial assessment to be made. Current technology status, competitive landscape, operator forecast and customer requirements will be assessed. Potential partners and sub-contractors to develop the suite of products will be identified and a roadmap with route to market will be defined. The market is global and this project will provide the opportunity for a European SME to be at the forefront of this key future technology.

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