دورية أكاديمية
Momentum-Assisted Adjoint Method for Highly Efficient Inverse Design of Large-Scale Digital Nanophotonic Devices
| العنوان: | Momentum-Assisted Adjoint Method for Highly Efficient Inverse Design of Large-Scale Digital Nanophotonic Devices |
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| المؤلفون: | Qiaomu Hu, Zishan Zeng, Zinan Xiang, Kaiyuan Wang, Minming Zhang |
| المصدر: | IEEE Photonics Journal, Vol 15, Iss 1, Pp 1-10 (2023) |
| بيانات النشر: | IEEE, 2023. |
| سنة النشر: | 2023 |
| المجموعة: | LCC:Applied optics. Photonics LCC:Optics. Light |
| مصطلحات موضوعية: | Inverse design, silicon photonics, adjoint method, Applied optics. Photonics, TA1501-1820, Optics. Light, QC350-467 |
| الوصف: | Gradient-descent-based digitized adjoint method offers a way to realize the high-efficiency inverse design of digital nanophotonic devices with diverse functions. However, the vanishing gradient problem encountered in the design of high-dimension devices may lead to significant inefficiencies, making it difficult to integrate novel functions on a single chip. Here, we propose a highly efficient digitized adjoint method for large-scale inverse design, called adaptive gradient-descent with momentum. It uses the first- and second-order momentum, instead of the gradient, to update the device pattern during adjoint optimization. To demonstrate the efficiency of the proposed method, we design a coarse wavelength division multiplexer and a three-mode power divider with design dimensions of 800 and 1360, respectively, which are approximately 2-4 times that of conventional digital nanophotonic devices. The simulation results show that, compared with the conventional gradient descent method, the momentum-assisted adjoint method has about 4-6 times higher efficiency and obtains better optimization performance, which provides a powerful tool for the inverse design of novel digital nanophotonic devices. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 1943-0655 |
| Relation: | https://ieeexplore.ieee.org/document/10026670/; https://doaj.org/toc/1943-0655 |
| DOI: | 10.1109/JPHOT.2023.3240189 |
| URL الوصول: | https://doaj.org/article/ac753207b4cc4cd6924a51023357217b |
| رقم الأكسشن: | edsdoj.753207b4cc4cd6924a51023357217b |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 19430655 |
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| DOI: | 10.1109/JPHOT.2023.3240189 |