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Binary computing using universal logic gates on SSW platform
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DOI：10.1016/j.nancom.2026.100624.png)
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Abstract
En 中文
This paper presents the design and realization of all-optical binary computing utilizing universal NAND or NOR gates integrated into a silicon slab waveguide. Leveraging the high refractive index characteristic of silicon at 1.55 mu m a common optical communication wavelength, the proposed structure ensures strong optical confinement and efficient signal propagation. Initially, Using the finite-difference time-domain (FDTD) simulation method, NAND or NOR gates are realized. By strategically arranging multiple universal logic gates within the slab waveguide, various fundamental logic operations, including NOT, AND, OR, XOR, and XNOR, have been realized. The proposed logic gates exhibit femtosecond-scale propagation delays, a high contrast ratio of 25.36 dB to 39.40 dB, and a bit rate of 5 Tb/s, demonstrating superior performance compared to conventional optical logic gate designs.
Keywords:
Logic gates
Silicon slab waveguide
Journal
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4.7
Papers:
38
Citations:
750
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