"Building Realistic Models for Non-ideal Photonics: Process Design Kits and Novel Applications"

Daniele Melati, Postdoctoral Researcher at Politecnico di Milano

July 22nd (Friday), 1:30pm
Harold Frank Hall, Rm 4164 (ECE Conf. Rm.)

Photonics is rapidly evolving from a pure research topic to a mature and promising technology. On the other hand, the evolution towards complex photonic circuits integrating many building blocks and functionalities poses major issues on the design and control of the functionality of the fabricated circuits. Real photonic devices are naturally affected by non-ideal behaviours due to unavoidable fabrication tolerances such as optical and thermal interactions between single devices, spurious effects, drifts of the geometry and material properties. These uncertainties prevent the realized circuits to work as expected, with performances often very different from the simulation predictions.
As a consequence, non – ideal effects must be taken into account during the early design stages to evaluate their impact on the circuit behaviour. Powerful device models combined with advanced experimental techniques and test-on-wafer approaches for data collection, stochastic and uncertainty quantification methods, are hence fundamental ingredients in the recipe for a high quality and high yield design. In this perspective, process design kits and circuit simulators offer the perfect environment for the collection and exploitation of this large amount of information, paving the way to a novel approach for the design and fabrication of photonic circuits.

About Daniele Melati:

photo of Daniele MelatiDaniele Melati is a postdoctoral researcher at Politecnico di Milano. He received the M.Sc. degree in Telecommunication Engineering in 2010 and the Ph.D. degree (cum laude) in Information Engineering in 2014 from Politecnico di Milano. In the same year he obtained a position as Post-Doc researcher at the Photonics Devices Group at the same university. In 2012/2013, he temporarily joined the Photonic Integration Group at the Technische Universiteit Eindhoven, The Netherlands, as visiting Ph.D. student to focus on technology and clean-room activities. His main research interests include photonic device modelling with a focus on Process Design Kit development, stochastic analysis and design optimization; test-on-wafer approaches; effects of thermal fluctuations and cross-talk on photonic circuits; design and development of photonic circuits for mode-division multiplexing systems; advanced experimental techniques. He actively collaborates with the company Filarete to the development of the circuit simulator for optical circuits ASPIC. Since 2009 he has been involved in several European collaborative projects, including EuroPIC (2009-2012), PARADIGM (2009-2014), BBOI (2013-2016) and PICS4ALL (2016-2019).

Hosted by: Professor Larry Coldren