Optical addition and subtraction are very crucial functions required in all optical computations and processing. In this article we propose an all-optical circuit that can implement these functions simultaneously. The proposed device can be realized by combining optical XOR gates with a 2-bit full adder. Four nonlinear ring resonators are used to realize the proposed structure.

中文翻译：

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基于光子晶体环形谐振器的全光2位加法器/减法器的新颖建议

光学加法和减法是所有光学计算和处理所需的非常关键的功能。在本文中，我们提出了一种可以同时实现这些功能的全光电路。所提出的器件可以通过将光学XOR门与2位全加法器组合来实现。使用四个非线性环形谐振器来实现所提出的结构。