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Q: Fachverband Quantenoptik und Photonik
Q 43: Quantum Optics and Photonics
Q 43.8: Vortrag
Donnerstag, 12. März 2020, 12:45–13:00, f342
Nanophotonic inverse design: A dynamic binarization function for the "objective-first" algorithm — •Marco Butz1,2,3 and Carsten Schuck1,2,3 — 1Physics Institute, University of Münster, Wilhelm-Klemm-Str. 10, 48149 Münster, Germany — 2CeNTech - Center for NanoTechnology, Heisenbergstr. 11, 48149 Münster, Germany — 3SoN - Center for Soft Nanoscience, Busso-Peus-Str. 10, 48149 Münster, Germany
Photonic integrated circuits are being employed for an increasing number of complex quantum optics experiments on compact and interferometrically stable chips. The integration of ever-increasing numbers of circuit components poses challenging requirements on the footprint and performance of individual nanophotonic devices. Here we show how inverse design algorithms based on the "objective-first" method can be employed for finding highly efficient and compact device layouts. We improve on existing implementations by introducing a dynamic binarization penalty function that removes limitations in the iterative evolution of the algorithm towards an efficient solution. We exploit the dynamic binarization in the design of waveguide mode converters with high efficiency and small footprint that outperform existing designs relying on intuitive design concepts and brute force optimization. It is straightforward to adapt our approach for a wide range of circuit components, thus providing new possibilities for scaling nanophotonic networks to large system size as well as realizing novel functionalities in such networks.