Threshold Logic Gate (TLG) is a potential alternative of Boolean Logic circuit. It is one of the fundamental components of neural network. An Optical Threshold Logic Gate (OTLG) has been designed in this paper, using a reflector telescopic system and a resonant Fabry-Perot cavity. Threshold logic gate consists of a weighted summing unit followed by a comparator. In the proposed OTLG, the weight of the input signal is varied using a polarizer-analyser combination. The threshold value, which is the reference of the comparator, is applied into the Fabry–Perot cavity with the help of a Beam splitter . AND, OR and NOT gates are implemented by setting the threshold values of the proposed OTLG.The system has been modelled analytically and studied using MATLAB and FINESSE. The simulation results for OTLG based Basic Gates are presented here.

阈值逻辑门 (TLG) 是布尔逻辑电路的潜在替代方案。它是神经网络的基本组成部分之一。本文设计了一个光学阈值逻辑门 (OTLG)，使用反射镜伸缩系统和谐振法布里-珀罗腔。阈值逻辑门由一个加权求和单元和一个比较器组成。在提议的 OTLG 中，输入信号的权重使用偏振器-分析器组合来改变。在分束器的帮助下，作为比较器参考的阈值被应用到法布里-珀罗腔中。AND、OR 和 NOT 门是通过设置所提出的 OTLG 的阈值来实现的。该系统已使用 MATLAB 和 FINESSE 进行分析建模和研究。此处介绍了基于 OTLG 的基本门的仿真结果。