Adaptative additive fabrication of parallel, high-performing 3D integrated optical interconnects

Adrià Grabulosa i Vallmajó; Javier Porte; Johnny Moughames; Erik Jung; Kanhaya Sharma; Daniel Brunner

doi:10.1117/12.3022006

18 June 2024 Adaptative additive fabrication of parallel, high-performing 3D integrated optical interconnects

Adrià Grabulosa i Vallmajó, Javier Porte, Johnny Moughames, Erik Jung, Kanhaya Sharma, Daniel Brunner

Proceedings Volume PC12995, 3D Printed Optics and Additive Photonic Manufacturing IV; PC129950B (2024) https://doi.org/10.1117/12.3022006
Event: SPIE Photonics Europe, 2024, Strasbourg, France

Abstract

Additive fabrication, in particular direct-laser writing (DLW) combined with two-photon polymerization (TPP), stands out as an innovative tool for creating intricate 3D photonic components. However, the long fabrication time associated with DLW-TPP restricts large-scale implementations. Here, we introduce an adaptative lithography strategy, i.e. flash-TPP, combining one- (OPP) and TPP, while adjusting the resolution of the different sections of the photonic circuit, reducing the printing time by up to 90% compared to TPP-only. Via flash-TPP, we demonstrate the fabrication of polymer-cladded single-mode photonic waveguides and adiabatic splitters, with low 1.3 dB/mm (0.26 dB) propagation (injection) losses and record optical coupling losses of 0.06 dB with very symmetric (3.4 %) splitting ratios for adiabatic couplers. The scalability of output ports here addressed can only be achieved by using the three spatial dimensions, which is challenging in 2D.

Conference Presentation

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Adrià Grabulosa i Vallmajó, Javier Porte, Johnny Moughames, Erik Jung, Kanhaya Sharma, and Daniel Brunner "Adaptative additive fabrication of parallel, high-performing 3D integrated optical interconnects", Proc. SPIE PC12995, 3D Printed Optics and Additive Photonic Manufacturing IV, PC129950B (18 June 2024); https://doi.org/10.1117/12.3022006

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