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Investigation on photonic crystal based all-optical clocked D-flip flop

机译:基于光子晶体的全光时钟D触发器的研究

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In this study, the authors propose a photonic crystal-based clocked D-flip flop using multi-mode interference (MMI). A central MMI waveguide is created for the interference of the input light and ports are placed at both input and output ends of it. The proposed structure is resulted with a contrast ratio (CR) of 9.63 and 5.84 dB at the outputs and QQ̅ with a response time or delay of less than 0.29 ps. Furthermore, the input and output waveguides are extended with sharp and smooth bend waveguides, respectively, in order to increase the delay of the structure as the delayed output is one of the main objectives of D-flip flop. The modified D-flip flop structure is operated with a delay of more than twofold of the basic structure by maintaining nearly the same CR at the output. The compactness and the fair simulation results of the proposed structure show that it is quite suitable to be a part of photonic integrated circuit.
机译:在这项研究中,作者提出了一种使用多模干扰(MMI)的基于光子晶体的时钟D触发器。创建一个中央MMI波导以防止输入光的干扰,并将端口放置在其输入和输出端。提出的结构在输出端和QQ̅端的对比度(CR)为9.63和5.84 dB,响应时间或延迟小于0.29 ps。此外,输入和输出波导分别用尖锐和平滑的弯曲波导扩展,以增加结构的延迟,因为延迟的输出是D触发器的主要目标之一。通过在输出端保持几乎相同的CR,修改后的D触发器结构的延迟是基本结构的两倍以上。该结构的紧凑性和合理的仿真结果表明,该结构非常适合作为光子集成电路的一部分。

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