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硅基级联双微环的分数阶微分器

Fractional-Order Differentiator Using Silicon-Based Cascaded Dual Micro-Rings

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摘要

采用一种半径相同的级联双微环谐振器实现n>1阶光时域微分器,并基于最小平均偏差原则,分析级联双微环微分器的微分精度、能量效率和输入信号对微分结果的影响。相比于单一微环,该结构可将微分波形平均绝对偏差最大值5.67%降至0.67%。在1

Abstract

In this study, a cascaded dual micro-ring resonator with the same radius is used to implement an n>1 order optical time-domain differentiator. The effects of differentiation accuracy, energy efficiency, and input signal on the differentiation results of the cascaded dual-ring differentiator were analyzed using the principle of minimum average deviation. In comparison with a single micro-ring, the average absolute deviation of differential waveform can be reduced from 5.67% to 0.67%. Within the range of 1n<2 differential orders, the overall average absolute deviation of the differentiator does not exceed 2.3% and the cross-correlation coefficients are greater than 99%. The differential accuracy is improved, the input signal pulse width is less affected the defferentiation order of the cascaded dual micro-ring defferentiator, and the applicable input-signal pulse width range is larger. Simultaneously, by adjusting the coupling state of a loop in the cascade structure, the differentiation order of the differentiator can be changed to realize a tunable high-precision fractional differentiator.

Newport宣传-MKS新实验室计划
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中图分类号:O439

DOI:10.3788/LOP57.090701

所属栏目:傅里叶光学与信号处理

基金项目:国家自然科学基金、江苏省自然科学基金;

收稿日期:2019-07-05

修改稿日期:2019-09-26

网络出版日期:2020-05-01

作者单位    点击查看

陈梦:东南大学电子科学与工程学院先进光子学中心, 江苏 南京 210096
李静:东南大学电子科学与工程学院先进光子学中心, 江苏 南京 210096
张若虎:东南大学电子科学与工程学院先进光子学中心, 江苏 南京 210096
胡国华:东南大学电子科学与工程学院先进光子学中心, 江苏 南京 210096
恽斌峰:东南大学电子科学与工程学院先进光子学中心, 江苏 南京 210096

联系人作者:恽斌峰(ybf@seu.edu.cn)

备注:国家自然科学基金、江苏省自然科学基金;

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引用该论文

Chen Meng,Li Jing,Zhang Ruohu,Hu Guohua,Yun Binfeng. Fractional-Order Differentiator Using Silicon-Based Cascaded Dual Micro-Rings[J]. Laser & Optoelectronics Progress, 2020, 57(9): 090701

陈梦,李静,张若虎,胡国华,恽斌峰. 硅基级联双微环的分数阶微分器[J]. 激光与光电子学进展, 2020, 57(9): 090701

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