Keysight, in collaboration with the RISE Research Institutes of Sweden, KTH Royal Institute of Technology, and Riga Technical University (RTU), demonstrated the first 310 GBaud rates using on-off keying modulation and 160 GBaud rates using PAM6 modulation with direct detection system to support 1.6 Tbps applications.
The researchers focused on an approach using a low latency intensity modulation and direct detection (IM/DD) system with the highest baud rate possible. The demonstration used amplification-free, externally modulated laser optical links that reduce overall power consumption.
The demonstration was enabled by the new Keysight M8199B 256 GSa/s Arbitrary Waveform Generator that delivers 75 GHz bandwidth and 2.5 V output amplitude in combination with the 110 GHz Keysight UXR1104A Infiniium UXR-Series Oscilloscope.
Dr. Oskars Ozoliņš, RISE Research Institutes of Sweden, KTH and RTU, said: “Data center interconnects require simple and efficient solutions to reduce complexity. We demonstrated that using a simple solution such as an externally modulated laser with record baud rate for on-off keying, PAM4, and PAM16 is a very efficient solution for cost efficient links in data centers. With Keysight’s support we have been able to validate that our experiment works. Innovations like this are only possible when working side-by-side with partners like Keysight.”
Dr. Joachim Peerlings, Vice President of Network and Data Center Solutions at Keysight Technologies, said: “Keysight supports young talented researchers and is proud to contribute to the development of next generation datacom optical interfaces. Collaborations like this help to address the next leap in the technology wave.”
