Through this work, an all-optical 2 ​× ​1 multiplexer (MUX) is realized for optical networking and optical signal processing using two-dimensional photonic crystal waveguides. The structure consists of two T-shaped and one Y-shaped waveguide using square lattice silicon rods with a background of air. The all-optical MUX is designed without using any nonlinear material like Kerr material to overcome the problems of low gain and nonlinear susceptibility. This design works on the principle of beam-interference phenomena. The performance all-optical MUX is simulated with the help of the finite-difference-time-domain method and resultant outputs are verified using the distribution of the optical field at a wavelength of 1.55 ​μm. The proposed circuit occupies less area 7.8 ​μm ​× ​9 ​μm and provides a transmission ratio of more than 92%, a contrast ratio of 29.66 ​dB in presence of select input and 23.2 ​dB in absence of select input and it can operate with a bit rate of 1.56 Tbps.

通过这项工作，实现了使用二维光子晶体波导进行光联网和光信号处理的全光2×1多路复用器（MUX）。该结构由两个T形波导和一个Y形波导组成，它们使用正方形的晶格硅棒并带有空气背景。全光多路复用器在设计时不使用任何非线性材料（如Kerr材料）来克服低增益和非线性磁化率的问题。该设计基于光束干扰现象的原理进行工作。使用有限差分时域方法模拟性能全光MUX，并使用波长为1.55μm的光场分布验证结果输出。拟议的电路面积较小，面积为7.8μm×9μm，传输率超过92％，