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Coherent optical transceivers, first introduced into the market in 2008, have proven to be a key technology for increasing data rates of optical serial links, and are now used in most long-haul and metro optical networks. After reviewing the operating principle of coherent systems, this talk will present recent advancements and future directions of coherent electro-optical transceivers, including photonic integrated circuits, digital signal processing and integrated analog front-ends. Particular focus will be given to integrated transimpedance amplifiers and linear drivers in BiCMOS technology. The talk will conclude with an overview of R&D activities in the Nokia advanced optics group.
Lorenzo Iotti received the B.S. and M.S. degrees in electrical engineering (2011, 2013) and the Ph.D. in microelectronics (2017) from the University of Pavia (Italy). His doctoral research focused on BiCMOS mm-wave LO generation circuit design.
From 2017 to 2020 he was a Post-Doctoral Researcher at the University of California, Berkeley and a member of the Berkeley Wireless Research Center (BWRC), where he was involved in CMOS transceiver design for RF and mm-wave wireless systems, with focus on Massive MIMO phased arrays. In 2020 he joined Nokia Corporation, New York, where he works on integrated transceiver design for optical communications.