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13 March 2024 Nonlinear processing with only linear optics (nPOLO)
Christophe Moser, Demetri Psaltis, Mustafa Yildirim, Ulas Dinc, Ilker Uguz
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Proceedings Volume PC12901, Complex Light and Optical Forces XVIII; PC129010S (2024) https://doi.org/10.1117/12.3000998
Event: SPIE OPTO, 2024, San Francisco, California, United States
Abstract
As artificial intelligence (AI) use grows, the demand for computing resources has increased dramatically. Server costs are significant and highlight the need for more energy-efficient and cost-effective computing platforms for AI applications and future growth. One potential solution is optical hardware. Optical computing hardware has several advantages, such as high bandwidth parallelism and energy efficiency. However, one major limitation is the implementation of nonlinear calculations in the optical domain. We will discuss an approach that achieves the equivalent of optical nonlinearity vastly more effectively than current approaches. The essence of the technique relies on multiple linear scattering off data encoded onto a spatial light modulator (SLM) that uses low optical power to effectively synthesise a nonlinear operation. By exploiting this relationship, arbitrary nonlinear transformations are programmed digitally, and light effectively performs an all-optical computation without requiring electronic switching or high peak power to achieve non-linearity.
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Christophe Moser, Demetri Psaltis, Mustafa Yildirim, Ulas Dinc, and Ilker Uguz "Nonlinear processing with only linear optics (nPOLO)", Proc. SPIE PC12901, Complex Light and Optical Forces XVIII, PC129010S (13 March 2024); https://doi.org/10.1117/12.3000998
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KEYWORDS
Nonlinear optics
Computer hardware
Optical computing
Artificial intelligence
Spatial light modulators
Energy efficiency
Light scattering
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