This article investigates the design of proton‐exchanged (PE) lithium niobate on insulator configurable photonic multiplexer (CPM). The photonic multiplexer includes two 1 × 1 Mach‐Zehnder modulator and a directional coupler. The performance of the proposed multiplexer is investigated by a 2D finite‐difference beam propagation method for the wavelength range of 1530 to 1570 nm. The results show a uniform transmission level for the wavelength range of 1530 to 1570 nm for one of the inputs, and for another input, it shows a uniform transmission level for 1530 to 1544 nm, beyond this range, it shows an attenuation of 0.02 dB/nm. The designed CPM is extended to verify the logical functionalities such as AND, NAND, OR, NOR, XOR, and XNOR for the wavelength of 1300 and 1550 nm. The obtained performance metrics ensure its suitability for large‐scale programmable photonic applications.

中文翻译：

---

质子交换铌酸锂在绝缘子上可配置光子多路复用器的设计

本文研究了可在绝缘体可配置光子多路复用器（CPM）上进行质子交换（PE）的铌酸锂的设计。光子复用器包括两个1×1 Mach-Zehnder调制器和一个定向耦合器。所提出的多路复用器的性能是通过2D有限差分光束传播方法研究的，其波长范围为1530至1570 nm。结果显示其中一个输入在1530至1570 nm波长范围内具有均匀的透射水平，而对于另一个输入，在1530至1544 nm的波长范围内显示均匀的透射水平，超出此范围显示0.02 dB的衰减/ nm。设计的CPM进行了扩展，以验证1300和1550 nm波长的逻辑功能，例如AND，NAND，OR，NOR，XOR和XNOR。