The final design and results of the ADDAPT VCSEL driver has been accepted for publication in IEEE Journal of Solid-State Circuits. Each lane of the 4-channel TX includes a two-tap feed-forward equalizer and achieves a data rate of 45 Gb/s. It is equipped with rapid-on/off switching capability for burst-mode operation and performance adaptivity. The TX saves 86 % of power in standby mode and can be switched-on in below 10 ns. The total power dissipation at full speed is below 100 mW, providing an energy efficiency of better than 2.11 pJ/bit.
TUD successfully applied their ADDAPT TX for an error-free link measurement at 40 Gb/s NRZ with BER < 10 -12. As RX a TUD design in 28 nm bulk-CMOS technology from another project has been used. The total link energy efficiency is 3.4 pJ/bit at 40 Gb/s. At lower data rates, the bandwidths of the circuits can be decreased adaptively to save power. This results in 2.7 pJ/bit at 20 Gb/s. A sensitivity of -1.9 dBm optical modulation amplitude could be measured at the RX for 40 Gb/s.These results were published in IEEE Photonics Technology Letters. At the time of publication, this was the fastest 850-nm VCSEL-based single-lane non-return-to-zero optical link with all the analog front-end components fabricated in CMOS.
Based on the presentation at the Symposium on VLSI Circuits 2017, IBM published their 60 Gb/s NRZ optical receiver in the IEEE Journal of Solid-State Circuits where they describe the design and the results in more detail. The Rx includes a low-latency digital CDR. It is designed in a 14-nm FinFET CMOS technology and consumes just 1.9 pJ/bit. For more information, please have a look in the Publications section.
The single-channel RX including the CDR and fully equipped with rapid power on/off switching capability was presented by our project partner IBM at the IEEE International Solid-State Circuits Conference (ISSCC) which took place from 11-15 February 2018 in San Francisco, USA. It was shown that the adaptive NRZ RX is suitable for burst-mode operation at 56 Gb/s with a power-on and CDR-lock time of less than 7 ns. Please see also the Publication section for more information.
At Optical Fiber Communications Conference and Exposition, which is the world largest conference on optical communications, the ADDAPT consortium will present the final version of its adaptive RX. The four-channel optical RX in 14 nm CMOS is capable of 4×40 Gb/s NRZ with only 2 pJ/bit. All lanes are equipped with rapid power-on/off switching of below 10 ns. Considering a 10% link utilization this enables up to 85% power savings.
Due to the outstanding results and innovation, the IBM talk ishighly ranked at the conference.
ADDAPT partner TUD published the design and results of the second version of their VCSEL driver in IEEE Photonics Technology Letters. Continue reading
ADDAPT project partner VIS developed a new type of an anti–waveguiding VCSEL for 850 nm wavelength. In Optics Express they describe the the concept and design of the devices as well as the results in high–speed data transmission which they achieved together with ADDAPT partner WUT.
Based on the work presented at the ISSCC 2017 the project partner IBM achieves a publication on “A 64 Gb/s 1.4 pJ/bit NRZ Optical Receiver Data-Path in 14 nm CMOS FinFET” in the renowned IEEE Journal of Solid-State Circuits (JSSC).
The ADDAPT consortium presented the final results and latest achievements of the project to external experts and representative of the European Commission on 6th December 2017 in Brussels, Belgium. The project was successfully reviewed and is finalized now.
The results of ADDAPT project are reported in Results Section.
The public fact sheet and presentation of ADDAPT project have been updated with results.
Please check out the Deliverables section.
The ADDAPT consortium will meet for its final plenary assembly on 26th October 2017 at project partner WUT in Warsaw, Poland. There, the project partners will summarize and evaluate the project results and organize the final steps for the project finalization.
In a joint work of ADDAPT partners IBM and VI-Systems on burst-mode optical VCSEL links, the slow optical power ramp-up of the lasers have been studied with regard to achieve ultra-short wake-up times. The results of this study have been published in IET Electronics Letters. For more information please see Publications section.
The ADDAPT project will be present at the European Conference on Optical Communication (ECOC) which takes place 17-21 September 2017 in Gothenburg, Sweden. The partners VIS and CSTG will be present with booth on exhibition area. Furthermore, WUT and VIS present results on a “100G Flexible IM-DD 850 nm VCSEL Transceiver with Fractional Bit Rate Using Eight-Dimensional PAM”.
We are proud that the publication of TUD on “Opto-Electrical Analog Front-End with Rapid Power-On and 0.82 pJ/bit for 28 Gb/s in 14 nm FinFET CMOS” received the Best Paper Award at IEEE International System-on-Chip Conference (SOCC) which took place from 05-08 September 2017 in Munich, Germany.
Four years project time is almost over; faster than one can imagine. In October 2017 the ADDAPT project will be finalized. The overall results will be presented at the final project and review meeting which is planned for early December.
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.
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.
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.
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.
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.
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.
In ADDAPT new high-speed single-mode VCSEL, which is capable to operate at data rates up to 50 Gb/s or even more, has been designed by project partner VIS. Project partner CSTG fabricated the design. The results are presented during the VCSEL Day 2017 in Cardiff, UK.
The ADDAPT consortium will meet for its 9th project meeting from 17-18 May 2017. The main topics will be the final steps on the project. Last plannings of the final packages for demos and characterization will be discussed.
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.
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.
From 09-10 November 2016 the ADDAPT consortium meets for the 8th time.
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.
The ADDAPT project will also be present at the 42nd European Conference on Optical Communications (ECOC) taking place 18-22 September 2017 in Duesseldorf, Germany. The project partner WUT will present a joint work with VIS on PAM transmssion using ADDAPT’s single mode VCSEL for up to 108 Gb/s over 100 m of fiber.
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.
The ADDAPT consortium member presents and publishes its VCSEL model at the 12th Conference on Ph.D. Research in Microelectronics and Electronics (PRIME) in Lisbon, Portugal.
Again ADDAPT is involved in the XXXVIII-th IEEE-SPIE Joint Symposium on Photonics, Web Engineering, Electronics for Astronomy and High Energy Physics Experiments. Out project partner WUT presents high-speed transmission rest results with ADDAPT VCSELs which were designed by VIS. Continue reading
On 26th and 27th May 2016 the ADDAPT consortium will meet at IBM Research Zurich, Switzerland, for its 7th project meeting and the review meeting of the 2nd project period. During the meeting the first successful practical implementations of the ADDAPT techniques will be presented and discussed
The publication about the ADDAPT results on 54 Gbit/s OOK transmission using single-mode VCSEL up to 2.2 km of multimode fiber is one of the most downloaded paper in Electronics Letters in May 2016. For further information please see Electronics Letters.
The ADDAPT consortium reported about the second project period covering the time frame from January 2015 to February 2016. The main work and achievements are summarized in deliverable report D1.3.
More information can be found in the ‘Deliverables‘ section.
The joint work of VI Systems and Warsaw Univerity of Technology on VCSEL devices and optical transmission techniques in ADDAPT lead to two leading edge publications at renowned Optical Fiber Communications Conference and Exposition (OFC) which takes place 20-24 March 2016 in Anaheim, USA. Continue reading
On 10 March 2016, Finetech hold the Micro Assembly Day 2016 in Berlin, Germany. The ADDAPT project partner Argotech reported about their expertise in packaging for microelectronics and highlighted the good approaches and reults which where achieved in the RF packaging for the ADDAPT project. Continue reading
In the deliverable report D2.5 the plans for dissemination and exploitation of ADDAPT results have been updated. Continue reading
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.
During SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC) which took place from 03-06 November 2015 in Porto de Galinhas, Brazil, TU Dresden presented the reasearch reults on an adaptivity method successfully implemented in an integrated circuit.
On 28-29 September 2015 the ADDAPT consortium will meet in Valencia,Spain for its 5th project meeting to review the progress and discuss the further work in the project. Continue reading
With the deliverable reports D4.2, D5.2 and D6.2 the ADDAPT consortium describes the first implementations of all required components and techniques to realize the high-speed energy-efficient adaptive optical link.
More information can be found in the ‘Deliverables‘ section.
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.
The ADDAPT project was presented at Science Picnic, Warsaw, 9 May 2015. Continue reading
The ADDAPT project show up at the Science Picnic of Polish Radio and the Copernicus Science Centre taking place on 9 May 2015 in the National Stadium, Warsaw, Poland. Continue reading
On March 30 2015, the ADDAPT project will have the first review meeting at EC premises in Brussels. One day later, on March 31, the 4th plenary project meeting will take place in Brussels as well.
The ADDAPT consortium reported about the first project period covering the time frame from November 2013 to December 2014. The main work and achievements are summarized in deliverable report D1.2.
More information can be found in the ‘Deliverables‘ section.
The ADDAPT concortium member VI Systems (VIS) will present project results with regard to high-speed modulated and near-field coupled vertical-cavity surface-emitting lasers (VCSEL) at the SPIE Photonics West OPTO which takes place from February 13-18 2015 in San Francisco, US. More information on http://spie.org/x2584.xml.
In the deliverable report D2.4 the plans for dissemination and exploitation of ADDAPT results have been updated. Continue reading