| Autor: |
Mustafa Yildirim, Ilker Oguz, Fabian Kaufmann, Marc Reig Escalé, Rachel Grange, Demetri Psaltis, Christophe Moser |
| Jazyk: |
angličtina |
| Rok vydání: |
2023 |
| Předmět: |
|
| Zdroj: |
APL Photonics, Vol 8, Iss 10, Pp 106104-106104-9 (2023) |
| Druh dokumentu: |
article |
| ISSN: |
2378-0967 |
| DOI: |
10.1063/5.0158611 |
| Popis: |
Modern machine learning models use an ever-increasing number of parameters to train (175 × 109 parameters for GPT-3) with large datasets to achieve better performance. Optical computing has been rediscovered as a potential solution for large-scale data processing, taking advantage of linear optical accelerators that perform operations at lower power consumption. However, to achieve efficient computing with light, it remains a challenge to create and control nonlinearity optically rather than electronically. In this study, a reservoir computing approach (RC) is investigated using a 14-mm waveguide in LiNbO3 on an insulator as an optical processor to validate the benefit of optical nonlinearity. Data are encoded on the spectrum of a femtosecond pulse, which is launched into the waveguide. The output of the waveguide is a nonlinear transform of the input, enabled by optical nonlinearities. We show experimentally that a simple digital linear classifier using the output spectrum of the waveguide increases the classification accuracy of several databases by ∼10% compared to untransformed data. In comparison, a digital neural network (NN) with tens of thousands of parameters was required to achieve similar accuracy. With the ability to reduce the number of parameters by a factor of at least 20, an integrated optical RC approach can attain a performance on a par with a digital NN. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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