Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Preprint |
| Published: |
2024
|
| Subjects: | |
| Online Access: | https://arxiv.org/abs/2408.13129 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866916367742009344 |
|---|---|
| author | Honda, Yoshihiro Shoji, Yuya Amemiya, Tomohiro |
| author_facet | Honda, Yoshihiro Shoji, Yuya Amemiya, Tomohiro |
| contents | In this study, we experimentally demonstrated that the nonlinear optical coefficient of the original Si can be enhanced by incorporating a metamaterial structure into an existing silicon waveguide. The two-photon absorption coefficient enhanced by the metamaterial structure was 424 cm/GW, which is 1.2x10^3 times higher than that of Si. Using this metamaterial waveguide-based nonlinear optical activation function, we achieved a high inference accuracy of 98.36% in the handwritten character recognition task, comparable to that obtained with the ReLU function as the activation function. Therefore, our approach can contribute to the realization of more power-efficient and compact all-optical neural networks. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2408_13129 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Optical activation function using a metamaterial waveguide for an all-optical neural network Honda, Yoshihiro Shoji, Yuya Amemiya, Tomohiro Optics Applied Physics In this study, we experimentally demonstrated that the nonlinear optical coefficient of the original Si can be enhanced by incorporating a metamaterial structure into an existing silicon waveguide. The two-photon absorption coefficient enhanced by the metamaterial structure was 424 cm/GW, which is 1.2x10^3 times higher than that of Si. Using this metamaterial waveguide-based nonlinear optical activation function, we achieved a high inference accuracy of 98.36% in the handwritten character recognition task, comparable to that obtained with the ReLU function as the activation function. Therefore, our approach can contribute to the realization of more power-efficient and compact all-optical neural networks. |
| title | Optical activation function using a metamaterial waveguide for an all-optical neural network |
| topic | Optics Applied Physics |
| url | https://arxiv.org/abs/2408.13129 |