Ciro Pentangelo

TL;DR: In this article, thermally-insulating three-dimensional microstructures are exploited to decrease the power needed to induce a 2-pi phase shift down to 37 mW and to reduce the thermal crosstalk to a few percent.

TL;DR: In this article, an analytical model of the heat diffusion, adapted to the typical geometry of optical chips, is proposed to describe the static and dynamic response of thermo-optic phase shifters.

TL;DR: In this article, the authors exploited a new water-immersion FLM process to integrate high-quality singlemode waveguides (0.29 dB/cm propagation losses and 0.27 dB/facet coupling losses at 1550 nm) with two different types of thermally insulating microstructures: trenches on the sides of the heated photon path and a bridge waveguide, a structure in which the ablation is performed also under the optical path.

TL;DR: A Femtosecond laser writing (FLW) process featuring thermal isolation allows for a dramatic reduction in dissipated power and crosstalk in integrated thermally-reconfigurable Mach-Zehnder interferometers (MZIs), especially when operated in vacuum as discussed by the authors .

TL;DR: In this article, thermally-insulating three-dimensional microstructures are exploited to decrease the power needed to induce a 2-pi phase shift down to 37 mW and to reduce the thermal crosstalk to a few percent.