Seifi Laleh Mohammad, Razaghi Mohammad
Appl Opt. 2022 Jan 20;61(3):783-791. doi: 10.1364/AO.440946.
A microring flower-like architecture is introduced to obtain optical logic gates that can be reconfigured. The proposed design can operate as a time-division multiplexer, a half adder/subtractor, and an optical single bit comparator circuit. The optical pump pulses modulate the microring resonators in this arrangement. Green lasers with a resonant wavelength of 532 nm are used to generate the optical pump pulses. To theoretically analyze the structure, the signal flow graph approach is applied. The proposed structure's performance is investigated by calculating certain figures of merit for the resulting output data streams. Outputs of the presented combinational logic gates are optimized by designing the most proper geometry of flower-like structure and simultaneously by opting for the best input port to drop port's optical path. It is demonstrated that proper distinguishing between 0 and 1 levels occurs in the output. The compact structure proposed is simple, expandable, and reconfigurable. The proposed structure can be used as a key component in high-speed optical networks, according to simulation results.
引入了一种微环花状架构以获得可重新配置的光学逻辑门。所提出的设计可以用作时分复用器、半加器/减法器以及光学单比特比较器电路。在这种配置中，光泵浦脉冲调制微环谐振器。使用谐振波长为532 nm的绿色激光器来产生光泵浦脉冲。为了从理论上分析该结构，应用了信号流图方法。通过计算所得输出数据流的某些品质因数来研究所提出结构的性能。通过设计最适当的花状结构几何形状并同时选择从输入端口到下路端口的最佳光路，对所呈现的组合逻辑门的输出进行了优化。结果表明，在输出中0和1电平之间有适当的区分。所提出的紧凑结构简单、可扩展且可重新配置。根据仿真结果，所提出的结构可用作高速光网络中的关键组件。
