Projects

VI Systems participated in many European projects with wide range of Partners.

PHOTONIX (01.06.2015 – 31.05.2017)

PhotoniX (01.06.2015 – 31.05.2017)

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Photonic Transmitters for Optical Networks and Interconnects in energy-efficient datacenters, supercomputers and home based on VCSELs

To match the demand of the productivity of modern computing systems, which is growing three orders of magnitude per decade, the single interconnect channel bit data rate should double each 2.5 years and the number of channels per link increase 5-fold each 10 years. Until recently copper was the dominant interconnect technology ($120 billion). At higher frequencies the electromagnetic losses and cross-talk are drastically enhanced, and new technologies are required. Since 2012 60 thousands energy-efficient optical links made of multimode fibers (MMF) powered by Vertical cavity surface-emitting lasers (VCSELs) are used in a single rack of supercomputer. Due to its small size, circular surface emission pattern, low operating current and a narrow spectrum VCSELs result a low cost, energy-efficient optical modules. Bit date rates up to 14Gb/s over 100m are reached by the industry. Scaling of the device to higher speeds is challenging as the modulation bandwidth is increasing as a square root of the drive current, while the degradation accelerates exponentially. At higher pulse frequencies the transmission distance rapidly decreases with pulse broadening.

The way to match the speed upgrade is to apply advanced nanotechnology concepts.
– Properly designed ultrathin strained narrow gap insertions as gain medium drastically enhances the modulation bandwidth at the same current;
– Introducing of strained barriers preventing the nonequilibrium carriers’ escape from the gain region allows further improvement of the modulation bandwidth and reliability;
– Optical design by oxide-confined aperture induced diffraction allows single mode operation extending the transmission length.

VI-Systems GmbH was first to pioneer and ship VCSELs transmitters up to 40Gb/s over 100m, far beyond the limits at that time. 54Gb/s OOK transmission significantly exceeding 1 km of multimode fiber is achieved with pilot devices. VIS will commercialize its novel interconnect technology and extend it up to 50Gb/s per channel.

This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 666866.

About Horizon 2020 SME Instrument
As part of the Horizon 2020 program, the European Commission is hand-picking potentially disruptive businesses to invest and support as part of the SME Instrument. More information can be found on the Internet at http://ec.europa.eu/easme/en/horizons-2020-sme-instrument

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ADDAPT (01.11.2013 – 30.04.2017)

ADDAPT (01.11.2013 – 30.04.2017)

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Adaptive Data and Power Aware Transceivers for Optical Communications

Existing optical networks are driven by dynamic user demands but operate statically at their maximum performance and do not offer much adaptability. Thus the links are not energy-efficient. ADDAPT aims at the development and technology take-up of dynamic transceiver subsystems. By implementing performance and power adaptivity from system down to optical device, electrical circuit and transistor level, flexible energy-efficient optical transmission links are enabled which pave the way for massive reductions of CO2 emission and costs. Depending on the actual data load, the number of activated link paths and individual device parameters like bandwidth, clock rate, modulation format and gain are adapted to enable lowering the supply power. Several control types are investigated: cognitive adaption based on predetermined or time averaged loads and real-time adaption. Driven by control units including smart algorithms, the devices can be tuned from 8 to 56 Gb/s. Novel adaptive directly modulated lasers and photodetectors designed for near-field light coupling are developed to allow self-aligned low-cost waveguide assemblies with minimum optical power losses. Laser bandwidths beyond 30 GHz and power consumption can be traded off and controlled by driver circuits. Circuits such as amplifiers, drivers and clock data recoveries are designed in energy-efficient 14 nm CMOS and can be adjusted via current sources, dc/dc converters and switches. VIS designs epitaxial wafers and processing routs and provides epitaxial material for VCSEL and PINs. First single mode (>30db SMSR) VCSELs at >1.5mW having a modulation bandwidth >27GHz are demonstrated. Jointly with partners developing multi-rate 56Gb/sx1 and x4 electronics and packaging partners the project creates a path towards digital 56Gb/s transmission and next generation devices suitable for 100Gb/s at 50GBaud.

The project is funded by the European Commision through the Seventh Framework Programme (FP7). Project Nr. 619197.

Partners:
Technische Universität Dresden
VI Systems GmbH, Berlin
IBM Research GmbH, Rueschlikon
Argotech AS, Nachod
Politechnika Warszawska, Warsaw
Compound Semiconductor Technologies Global Limited, Glasgow
Primetel PLC
Tyco Electronics Nederland BV

NEWLED (01.11.2012 – 30.10.2016)

NEWLED (01.11.2012 – 30.10.2016)

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Nanostructured Efficient White LEDs based on short period superlattices and quantum dots

NEWLED will develop high efficiency and high brightness monolithic and hybrid all-semiconductor WHITE light-emitting GaN-based diodes. NEWLED should also enhance the efficiency of bright red and yellow InGaAlP/AlGaAs LEDs by bandgap engineered superlattices. Novel light extraction approaches will target advanced directionality and colour adjustment. Values of 50 to 60% overall efficiency with a conversion of greater than 200 lm/W in the exploited warm white LEDs are targeted as well as the realization of a colour rendering index (CRI) of greater than 95. Advanced packaging will enable effective heat dissipation and light management. The devices will have immediate applications in automotive, industrial lighting and displays industries.

Widespread implementation would reduce global energy consumption by approximately 10% and reduce CO2 emissions by 3Bn tonnes with consequent economic and environmental benefits. Presently a strong improvement is realized for LEDs in the range of 580-610nm with strain-induced barrier engineering on substrates strongly misoriented from (100) direction is demosntrated. Injection lasing at 620nm is realized.

The project is funded by the European Commision FP7-ICT – Specific Programme “Cooperation”: Information and communication technologies. Project Nr. 318388.

Partners:
University of Dundee
Osram Opto Semiconductors GmbH, Regensburg
Technical University, Berlin
Ioffe Physico-Technical Institute of the Russian Academy of Sciences, St. Petersburg
Centre National de la Recherche Scientifique, Valbonne
VI Systems GmbH, Berlin
Top-Gan SP ZOO, Warsaw
Compound Semiconductor Technologies Global Limited, Glasgow
Universita Degli Studi di Roma Tor Vergata, Rom
M-Squared Lasers Limited, Edinburgh
TTY-Saatio, Tampere
Soft-Impact OOO, St. Petersburg
Lux-Tsi Limited, Pencoed
Vilniaus Universitetas, Vilnius

COLIBRI (01.11.2013 – 31.12.2015)

COLIBRI (01.11.2013 – 31.12.2015)

Compact Lasers with Increased Brightness

The task is to develop broad spectral range lasers suitable for frequency conversion over the complete blue-red spectral range. High power lasers and gain chips having a flat gain curve across 900-1260nm range are demonstrated at temperatures up to 150oC.  Lasing at 1.26 µm is realized on GaAs substrates. Novel approaches based on the tilted wave laser (TWL) concepts enabled lasers with ultrabroad waveguides >30 µm with duo-lobe emission pattern with each lobe having a full width at half maximum below 2o. Beam quality (M2) factor ~1.4 is achieved for a single mode making two-arm external resonator geometry easy. Focusing of the double beam with a single lens transforms the split beam into a Bessel like beam with further conversion to Gaussean. Coherence of the waveguide-copuled stripes up to 100 µm pitch sizes is demosntrated. Fequency converted green lasing and direct red laser emission in TWL lasers is demosntrated.

Partners:
Ioffe Physico-Technical Institute of the Russian Academy of Sciences, St. Petersburg
VI Systems GmbH, Berlin

SEPIANet (01.07.2011 – 31.12.2013)

SEPIANet (01.07.2011 – 31.12.2013)

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System embedded Photonics in Access Networks

The project aimed to develop technology solutions for embedded optical architectures in access network systems to allow significant reduction in power consumption, increased energy efficiency, system density and bandwidth scalability, which is currently unfeasible in today’s copper driven access network systems. VIS provided 850nm and 1300nm VCSELs and modules for 10Gb/s data transmission

Partners:
Xyratex Technology Ltd. Havant
Fraunhofer Institute, Munich
VI Systems GmbH, Berlin
ILFA Feinstleitertechnik GmbH, Hannover
TerOpta Ltd., Nottingham
Conjuct Ltd., Livingston

Optical Link/Eurostars/Eureka (01.11.2009 – 31.12.2011)

Optical Link/Eurostars/Eureka
(01.11.2009 – 31.12.2011)

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Development of integrated optical technology for short range, ultra high speed active optical data cables

In the frame of the project 10-25Gb/s single mode VCSELs and PIN chips were developed for flip-chip assembly.

Partners:

Lionix BV, Enschede
IHP GmbH, Frankfurt/O.
Fraunhofer Gesellschaft zur Förderung der angewandten Forschung e.V., Munich
Tyco Electronics Nederland BV, `s-Hertogenbosch
VI Systems GmbH, Berlin

VISIT (01.06.2008 – 30.10.2011)

VISIT (01.06.2008 – 30.10.2011)

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Vertically Integrated Systems for Information Transfer

The project focused on strategic, high-value photonic components and subsystems for scalable economic broadband access and local area networks. The central objective was research on, development, test and exploitation of system-enabling optical transmitters having a completely novel design and/or largely improved functionality as compared to the state of the art. Asa result vertical cavity surface emitting lasers both with current and electro-optic modulation have been developed. 40Gb/s error free operation was demonstrated for the first time an chip and module levels. Digital multitoned and QPSK transmission  beyond 20Gb/s was realized in current- and electro-optically-modulated devices.

Partners:

Technical University Berlin, Institute of Solid State Physics, Berlin
VI Systems GmbH, Berlin
Cambridge University, Department of Engineering, Cambridge
Chalmers University of Technology, Photonics Laboratory, Göteborg
IPLS/Intel Ireland Ltd., Kildare
Ioffe Institute, St. Petersburg
Riber S.A., Bezons
Tyndall National Institute, Cork, University College Cork – National University of Ireland
Epinova GmbH, Freiburg
IQE Europe Ltd., Cardiff

HiTrans (01.06.2008 – 31.05.2010)

HiTrans (01.06.2008 – 31.05.2010)

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Grundlagen für hochbitratige Transceiver für Optical Interconnect Anwendungen

The project addressed optical micro-subassemblies for data trasnmission up to 40Gb/s and beyond and included bot optical componets VCSELs and PD chips, driver and amplified electronics and microassmlies permitting TO-can modules capable to temperature-invariant 28Gb/s data trasnmission up to 85oC climatic chamber temperatures. Open eye diagrams up 50Gb/s were demonstrated with VIS modules. VIS developed and protected unique microassemply package and optical coupling scheme of the optical subsassembly reaching ultimately low total power (-10dBm) for 28Gb/s trasnmission at bite-error-ratio 1E-12.

Partners:
VI Systems GmbH, Berlin
IHP Frankfurt/Oder
EZconn Europe GmbH, Berlin
Technical University, Berlin