期刊
NANOPHOTONICS
卷 12, 期 15, 页码 3189-3197出版社
WALTER DE GRUYTER GMBH
DOI: 10.1515/nanoph-2023-0234
关键词
microring resonator; optical digital computing; silicon photonics
We propose a novel method for performing photonic nonlinear computations using linear operations in a high-dimensional space, achieving more diverse nonlinear functions compared to existing optical methods. By programming the high-dimensional photonic matrix multiplier, we demonstrate fourteen different logic operations and showcase the combined logic functions of a half-adder and a comparator at 10 Gbit/s. This scheme simplifies devices and nonlinear operations for programmable logic computing, providing a new solution for optical digital computing and enriching the diversity of photonic nonlinear computing.
As photonic linear computations are diverse and easy to realize while photonic nonlinear computations are relatively limited and difficult, we propose a novel way to perform photonic nonlinear computations by linear operations in a high-dimensional space, which can achieve many nonlinear functions different from existing optical methods. As a practical application, the arbitrary binary nonlinear computations between two Boolean signals are demonstrated to implement a programmable logic array. In the experiment, by programming the high-dimensional photonic matrix multiplier, we execute fourteen different logic operations with only one fixed nonlinear operation. Then the combined logic functions of half-adder and comparator are demonstrated at 10 Gbit/s. Compared with current methods, the proposed scheme simplifies the devices and the nonlinear operations for programmable logic computing. More importantly, nonlinear realization assisted by space transformation offers a new solution for optical digital computing and enriches the diversity of photonic nonlinear computing.
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