ADDAPT VCSEL driver to be presented at EuMIC 2017 in Nuremberg

ADDAPT consortium member TU Dresden designed a VCSEL driver which incorporates an adjustable 2-tap feed-forward equalizer (FFE) in 14 nm SOI CMOS technology. Using the FFE approach it is possible to reach data rates which exceed the inherent bandwidth of the laser. Successfully implementation and measurements reveal error-free electro-optical operation up to 42 Gb/s at 2.8 pJ/bit including the VCSEL power consumption. The design and the results will be presented at 12th European Microwave Integrated Circuits Conference (EuMIC) taking place on 08-13 October 2017 in Nuremberg, Germany.

TU Dresden presents receiver analog front end at SoCC 2017 in Munich

One part of the ADDAPT receiver module will be presented at the IEEE International System-on-Chip Conference (SOCC) which takes place on 05-08 September 2017 in Munich, Germany. An analog front end was designed and successfully characterized in 14-nm FinFET CMOS technology. The electro-optical subassembly provides up to 28 Gb/s at only 0.82 pJ/bit featuring a rapid power-on/off switching.

Journal of Lightwave publication on flexible MultiCAP modulation

Together with partners from Technical University of Denmark, the ADDAPT consortium members VIS and WUT published the results of their studies on MultiCAP modulation scheme in 850 nm VCSEL-based multimode fiber links. For the investigations the VCSEL design by VIS in ADDAPT was used. It is shown that the proposed modulation scheme can adapt to different data traffic demands and transmission link conditions, with advantages of variable bit rate and, therefore, power consumption adaptivity.

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ADDAPT co-organizes special DACINT session at ICTON 2017

The ADDAPT consortium is pleased to co-organize the 3rd workshop on Technology for Data Center Interconnects (DACINT) at 19th International Conference on Transparent Optical Networks (ICTON) which takes place July 2-6, 2017 in Girona, Spain. The project also contributes with four invited talks covering high-speed VCSELs and VCSEL transmission, adaptive high-speed and ultra-low power optical interconnect and adaptive VCSEL driver design. See Publications for more information.

IBM presents optical receiver at VLSI Symposium 2017

In June, the ADDAPT optical receiver for up to 60 Gb/s with only 1.9 pJ/bit featuring a first-order digital CDR with high jitter tolerance has been presented at the Symposium on VLSI Circuits in Kyoto, Japan. More information on the work are available in a short YouTube Interview provided by IBM Research. The work is also mentioned in EE Times.

Tunable VCSEL driver presented at IEEE Optical Interconnects Conference

Project partner TUD presented another adaptive circuit in 28 nm CMOS technology. In June at IEEE Optical Interconnects Conference, this time an adaptive VCSEL driver is presented which is capable of up to 30 Gb/s with only 1.7 pJ/bit. Successful down-scaling to 15 Gb/s is demonstrated while reducing the power consumption significantly and  maintaining the modulation amplitude.

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ADDAPT partner IBM presents 64 Gb/s receiver at leading edge conference

IBM presents the data path of the optical ADDAPT receiver at IEEE International Solid-States Circuits Conference (ISSCC) in February 2017, San Francisco , USA. ISSCC is the foremost global forum for solid-state circuits and systems-on-a-chip. The receiver data path was successfully characterized up to 64 Gb/s optically while just consuming 1.4 pJ/bit.To the best of our knowledge, this is the highest data rate with superior energy efficiency among previously reported CMOS optical RXs.

ADDAPT co-organizes special session at OFTA 2017 in Poland

The ADDAPT project co-organizes a special session on Optical Fibers in Telecommunication at the 17th Conference on Optical Fibers and Their Applications, taking place 23.01-27.01.2017 in Suprasl, Poland. With this unique chance the approaches and results of the project were presented in five talks from four project partners. See Publications for more information.

ADDAPTive receiver amplifier presented at EuMIC 2016

In October 2017, the European Microwave Integrated Circuits Conference, which is one of the premier European technical conference for RF, microwave and Terahertz microelectronics, takes place in London, UK. At this conference TU Dresden will present one of the fist bandwidth and power adaptive optical receiver amplifier implemented in a 28-nm CMOS technology. By scaling down the circuit from 30 to 10 Gb/s, 50 % of its power consumption can be saved while keeping the gain constant.

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Joint publication with Technical University of Denmark achieved on adaptive MultiCAP transmission

WUT publishes a paper on adaptive MultiCAP modulation together with their external collaborator Technical University of Denmark at Latin America Optics and Photonics Conference. The paper incorporates the application of VCSELs for MultiCAP modulation and investigates the adaptive use of the several bands for performance and bandwidth tuning.

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6th ADDAPT plenary meeting at VI Systems

The 6th ADDAPT plenary meeting takes place from 20-21 January 2016 at the project partner VI Systems in Berlin, Germany. As the second project period will end by February 2016 the consortium will conclude the work and reults of this project phase and plans the next steps in the final project phase.

ADDAPT overview presented at XXXVI-th IEEE-SPIE Joint Symposium on Photonics, Web Engineering, Electronics for Astronomy and High Energy Physics Experiments

An overview about the ADDAPT project will be given by the coordinator on Wedenesday, 27 May 2015 at the XXXVI-th IEEE-SPIE Joint Symposium on Photonics, Web Engineering, Electronics for Astronomy and High Energy Physics Experiments in Wilga village, Poland. The corresponding article will be published in the Proceedings of SPIE and therefore the work of ADDAPT is made worldwide visible.

Network analysis and system concept finished

ADDAPT partner PrimeTel performed an intensive network analysis in its data and network center. Several parameters e.g. like data throuput, power consumption, link utilization and packet distribution have been measured and analysed in order to determine the potential to introduce the ADDAPTive approaches to the optical links. In addition the ADDAPT consortium achieves first findings for a complete system architecture of the ADDAPT transceiver. The results are important for the further design of the single components and are summarized in the deliverable report D3.1. Continue reading