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太赫兹光非对称解复用器(TOAD)是一种全光信号处理领域中常用的器件,其具有响应速度快、可集成、稳定性好等优点。本文提出了一种基于TOAD的全光时钟倍频技术方案。通过模型仿真,模拟对TOAD输入直流光,在时钟脉冲前后沿附近会产生双峰输出现象,以此来分析TOAD的开关特性,研究了控制光能量、开关窗口大小、半导体光放大器增益恢复时间等因素对双峰输出特性的影响。对光时钟信号进行了全光二倍频、三倍频和四倍频的仿真,从频谱上观察,倍频准确,并且在实验上实现了200 Mb/s和1 Gb/s时钟的全光二倍频,与仿真结果相符。
Terahertz asymmetric de-multiplexer (TOAD) is a commonly used device in the field of all-optical signal processing. It has the advantages of fast response, integration, and good stability. This paper presents a TOAD-based all-optical clock multiplier scheme. Through the simulation of the model, we can simulate the DC light input to TOAD and produce double-peak output phenomenon around the clock pulse, in order to analyze the switching characteristics of TOAD and study the control light energy, the size of the switching window, the gain recovery time of semiconductor optical amplifier Influence of Factors on Bimodal Output Characteristics. The optical clock signal was simulated by the all-optical double frequency, the third frequency and the fourth frequency. It was spectrally observed and the frequency doubling was accurate. The experiment also achieved double the total light of 200 Mb / s and 1 Gb / s clock Frequency, consistent with the simulation results.