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.
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.
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 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.