A new photonic crystal (PC) based 2×1 multiplexer, which composed of a Kerr nonlinear Fano resonance-based switching module and an adder module, is presented. In the proposed device, using a pump light power, it is possible to control the transmissions of the input signals into the output port. The performance of the proposed device is examined using the finite-difference time-domain (FDTD) method. The numerical simulation results show that using a pump light power of 0.48 $W/\mu m,$ the transmissions of the input signals into the output port can be changed with the extinction ratio of 15.37 dB, which exhibits an efficient switching behavior. For a pump light power of 0.48 $W/\mu m,$ the switching times for both input signal channels are calculated to be around 5 ps. The designed 2×1 multiplexer can be used in the integrated all-optical digital signal processing structures.

提出了一种新的基于光子晶体（PC）的2×1多路复用器，该多路复用器由基于Kerr非线性法诺共振的开关模块和加法器模块组成。在提出的设备中，使用泵浦光功率，可以控制输入信号到输出端口的传输。使用有限差分时域（FDTD）方法检查了所提出设备的性能。数值模拟结果表明，使用泵浦光功率为0.48$\mathrm{w\; ^}/\mu 米，$输入信号到输出端口的传输可以在消光比为15.37 dB的情况下进行更改，这显示了有效的开关性能。对于0.48的泵浦光功率$\mathrm{w\; ^}/\mu 米，$两个输入信号通道的开关时间经计算约为5 ps。设计的2×1多路复用器可用于集成的全光数字信号处理结构。