Microring-based programmable coherent optical neural networks

Coherent programmable integrated photonics circuits have shown great potential as specialized hardware accelerators for deep learning tasks, which usually involve the use of linear matrix multiplication and nonlinear activation components. We design, simulate and train an optical neural network full...

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Bibliographic Details
Published in:Optics express 2023-06, Vol.31 (12), p.18871-18887
Main Authors: Wang, Jiahui, Rodrigues, Sean P, Dede, Ercan M, Fan, Shanhui
Format: Article
Language:English
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Summary:Coherent programmable integrated photonics circuits have shown great potential as specialized hardware accelerators for deep learning tasks, which usually involve the use of linear matrix multiplication and nonlinear activation components. We design, simulate and train an optical neural network fully based on microring resonators, which shows advantages in terms of device footprint and energy efficiency. We use tunable coupled double ring structures as the interferometer components for the linear multiplication layers and modulated microring resonators as the reconfigurable nonlinear activation components. We then develop optimization algorithms to train the direct tuning parameters such as applied voltages based on the transfer matrix method and using automatic differentiation for all optical components.
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.492551