Michael Zervas
Organisation: Ligentec SA Role: Managing director Based in: Corbeil-Essonnes, France
The opening of a new research and development centre is always to be welcomed. The recently launched Ligentec France SAS, part of Swiss silicon nitride photonic integrated circuit (PIC) company Ligentec SA, opened one this year in Corbeil-Essonnes, south of Paris, France, and Ligentec co-founder Michael Zervas was announced in April as its president. The centre’s PIC development focus
extends from design and wafer processing to characterisation. Heading a company we have still got eyes on, Zervas’s strong academic background has always been
Education: PhD, MSc, Nanotechnology, EPFL; MSc, Applied Physics, National Technical University of Athens
matched by a smart business sense – he co-founded Ligentec in 2016 – and who can forget the launch of its proprietary silicon nitride process, able to achieve ultra-low propagation losses? As he explained: ‘Our process is able to deposit thick film silicon nitride, from 100nm to 2500nm, overcoming the challenge of crack formation due to stress in the material.’ The process was able to scale up to production volumes using 8” wafers and stepper lithography. You can find Zervas online at
linkedin.com/ in/michael-zervas-ph-d-b07b9356/.
Congratulations, Michael!
“With his ground-taking development in low loss photonic integrated circuits (PICs), he laid the foundation for LIGENTEC. He further brought the low TRL fabrication process to a mature and scalable PIC platform that is now running in a 200mm automotive-qualified CMOS line with a fully deployed Process Design Kit (PDK). Low loss silicon nitride PICs permit existing products in telecom/datacom to benefit from
reduced on-chip losses and act as an enabler for new applications areas such as quantum. We are honored to work with Michael, being a highly innovative person in combination with an industry focus mind-set.”
Thomas Hessler, CEO
Mian Zhang
Organisation: Hyperlight Role: CEO Based in: Cambridge, Massachusetts, USA
Mian Zhang leads Harvard spin-out Hyperlight, which took an established material in lithium niobate and developed new fabrication technologies to create waveguides that look like silicon, but provide more efficient electrooptic modulation and a very low optical loss. HyperLight and its collaborators from
Harvard University and Freedom Photonics used DFB lasers for integration with thin-film lithium niobate because of their low cost, small footprint, and large output powers exceeding 100mW. ‘We are very excited to be a part of this
Education: PhD Engineering Physics/ Applied Physics, Cornell University
remarkable demonstration of the hybrid integration capability of the thin-film lithium niobate platform with other critical optical components,’ said Zhang.
He has been in post since 2018 and is a
Postdoctoral Fellow of Applied Physics at Harvard. 2022 has seen a flurry of credits on articles on topics such as spectral control of nonclassical light pulses and efficiency and broadband on-chip electro- optic frequency comb generators. He’s fast becoming one of the discipline’s most prolific authors.
66 Photonics100 2023
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