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All-optical ultrafast XOR/XNOR logic gates, binary counter, and double-bit comparator with silicon microring resonators

机译:具有硅微环谐振器的全光超快XOR / XNOR逻辑门,二进制计数器和双位比较器

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摘要

We present designs of all-optical ultrafast YES/NOT, XOR/XNOR logic gates, binary counter, and double-bit comparator based on all-optical switching by two-photon absorption induced free-carrier injection in silicon 2 × 2 add-drop microring resonators. The proposed circuits have been theoretically analyzed using time-domain coupled-mode theory based on reported experimental values to realize low power (~28 mW) ultrafast (~22 ps) operation with high modulation (80%) and bit rate (45 Gb/s). The designs are complementary metal-oxide semiconductor compatible and provide advantages of high Q-factor, tunability, compactness, cascadibility, scalability, reconfigurability, simplicity, and minimal number of switches and inputs for realization of the desired logic. Although a two-bit counter has been shown, the scheme can easily be extended to N-bit counter through cascading.
机译:我们提出了基于全光切换的全光超快YES / NOT,XOR / XNOR逻辑门,二进制计数器和双位比较器的设计,该全光切换是通过在硅2×2加法中通过双光子吸收诱导的自由载流子注入实现微环谐振器。基于时域耦合模式理论,基于报告的实验值对建议的电路进行了理论分析,以实现低功率(〜28 mW)超快(〜22 ps)的高调制(80%)和比特率(45 Gb / bit)操作s)。这些设计与互补金属氧化物半导体兼容,并具有高Q因子,可调性,紧凑性,级联性,可伸缩性,可重构性,简单性以及用于实现所需逻辑的最少数量的开关和输入的优点。尽管已经示出了两位计数器,但是该方案可以容易地通过级联扩展为N位计数器。

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