Details
| Original language | English |
|---|---|
| Number of pages | 19 |
| Publication status | E-pub ahead of print - 14 Jul 2024 |
Abstract
Keywords
- physics.optics, physics.comp-ph
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2024.
Research output: Working paper/Preprint › Preprint
}
TY - UNPB
T1 - Quantized Inverse Design for Photonic Integrated Circuits
AU - Schubert, Frederik
AU - Bethmann, Konrad
AU - Mahlau, Yannik
AU - Hartmann, Fabian
AU - Caspary, Reinhard
AU - Munderloh, Marco
AU - Ostermann, Jörn
AU - Rosenhahn, Bodo
N1 - 19 pages, 10 figures
PY - 2024/7/14
Y1 - 2024/7/14
N2 - The inverse design of photonic integrated circuits (PICs) presents distinctive computational challenges, including their large memory requirements. Advancements in the two-photon polymerization (2PP) fabrication process introduce additional complexity, necessitating the development of more flexible optimization algorithms to enable the creation of multi-material 3D structures with unique properties. This paper presents an efficient reverse-mode automatic differentiation framework for finite-difference timedomain (FDTD) simulations that is able to handle several constraints arising from novel fabrication methods. Our method is based on straight-through gradient estimation that enables non-differentiable shape parametrizations. We demonstrate the effectiveness of our approach by creating increasingly complex structures to solve the coupling problem in integrated photonic circuits. The results highlight the potential of our method for future PIC design and practical applications.
AB - The inverse design of photonic integrated circuits (PICs) presents distinctive computational challenges, including their large memory requirements. Advancements in the two-photon polymerization (2PP) fabrication process introduce additional complexity, necessitating the development of more flexible optimization algorithms to enable the creation of multi-material 3D structures with unique properties. This paper presents an efficient reverse-mode automatic differentiation framework for finite-difference timedomain (FDTD) simulations that is able to handle several constraints arising from novel fabrication methods. Our method is based on straight-through gradient estimation that enables non-differentiable shape parametrizations. We demonstrate the effectiveness of our approach by creating increasingly complex structures to solve the coupling problem in integrated photonic circuits. The results highlight the potential of our method for future PIC design and practical applications.
KW - physics.optics
KW - physics.comp-ph
U2 - 10.48550/arXiv.2407.10273
DO - 10.48550/arXiv.2407.10273
M3 - Preprint
BT - Quantized Inverse Design for Photonic Integrated Circuits
ER -