Here we discuss the wafer-scale fabrication process flow of aluminium airbridges for microwave (MW) interconnects on lithium niobate on Damascene silicon nitride (LNOD) photonic chips. We also discuss the subsequent chip release procedure that preserves the bridges allowing for safe release of these delicate structures.
Results (3)
This work was presented at the Nanofabrication Photonics Online Meetup, 16-18 May 2021. Template-assisted selective epitaxy enables the local integration of group III-V semiconductors on Si with high material quality for nanophotonic applications. Here we demonstrate evidence of room temperature lasing at 1530 nm for a monolithically integrated InGaAs whispering gallery mode cavity on Si with a thickness of 300 nm and a diameter of 1.5 µm. These devices can potentially be scaled down further ...
Alumina (\mathrm{Al_2O_3}) films are widely used in photonics and superconducting circuits as an etch stop or passivation layer. In silicon nitride (\mathrm{Si_3N_4}) fabrication, a widely used etching recipe is dry etching using a mixture of \mathrm{SF_6/CHF_3} gasses. In case of multi-stacked materials, one might be interested to etch the \mathrm{Si_3N_4} layer with an stop layer to protect the rest of the stack from the etching step. \mathrm{Al_2O_3} is a great etch stop layer for \mathrm{Si_3N_4} ...
Results per page