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Efficient Modelling of 3D-Printed Freeform Waveguides by a Dedicated Beam-Propagation Method (BPM) Based on Transformation Optics

Foroutan-Barenji, Sina ORCID iD icon 1; Krimmer, Jonas ORCID iD icon 1; Freude, Wolfgang 1; Koos, Christian 1
1 Institut für Photonik und Quantenelektronik (IPQ), Karlsruher Institut für Technologie (KIT)

Abstract:

An efficient numerical algorithm is developed to model wave propagation in 3D-printed freeform waveguides, so-called photonic wire bonds (PWBs). The method utilizes transformation-optics (TO) in combination with curvilinear meshing to transform the original 3D-freeform PWB into a straight waveguide with anisotropic material properties. This waveguide is then modeled using an anisotropic full-vectorial beam propagation method (BPM). We demonstrate the viability of our TO-BPM algorithm and benchmark its performance against a finite-difference-time-domain (FDTD) method. Our approach shows a 600-fold reduction of the computation time in combination with a mean percentage error of 3.2% in power transmission simulation relative to the FDTD.


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Originalveröffentlichung
DOI: 10.1007/978-3-031-63378-2_18
Zugehörige Institution(en) am KIT Institut für Photonik und Quantenelektronik (IPQ)
Publikationstyp Proceedingsbeitrag
Publikationsjahr 2024
Sprache Englisch
Identifikator ISBN: 978-3-031-63378-2
ISSN: 0930-8989
KITopen-ID: 1000171877
Erschienen in The 25th European Conference on Integrated Optics. Ed.: J. Witzens
Veranstaltung 25th European Conference on Integrated Optics (ECIO 2024), Aachen, Deutschland, 17.06.2024 – 19.06.2024
Verlag Springer Nature Switzerland
Seiten 105–110
Serie Springer Proceedings in Physics ; 402
Vorab online veröffentlicht am 16.06.2024
Schlagwörter Photonic integrated circuit, photonic wire bond, transformation optics, beam propagation method
Nachgewiesen in Dimensions
Scopus
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