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可调的光学矩阵卷积20Gbit/s的QPSK二维数据与使用光波混合的内核.
Optics letters
|August 29, 2024
概括
光学矩阵卷积可以实现高速,相位编码的数据处理,而无需光学-电子-光学转换. 这种可重新配置的方法使用周期极化酸波导实现了无错误的16-QAM和64-QAM输出.
科学领域:
- 光子学是指光子学的使用方法.
- 光学信号处理 视觉信号处理
- 非线性光学是非线性光学.
背景情况:
- 光学矩阵卷积比电子方法具有优势,特别是对于高速率的相位编码数据,因为它消除了昂贵的光学-电子-光学 (OEO) 转换.
- 阶段编码数据格式,如正方形相位移键 (QPSK),对于高容量光通信系统至关重要.
研究的目的:
- 实验展示一个可重新配置的光学矩阵卷积系统,用于处理QPSK编码数据.
- 展示系统处理可变内核大小和高数据速率的能力.
主要方法:
- 两维 (2D) 输入数据的序列化和时间移动数据复制 (TSDR) 的生成.
- 在周期极化酸 (PPLN) 波导中使用非线性波混合的1D内核对2D数据进行卷积.
- 通过调整内核相对相位和振幅来调整内核系数.
主要成果:
- 成功证明了可重新配置的矩阵卷积,为2x1和3x1内核提供无错输出.
- 在2x1内核中实现了16次方格振幅调制 (QAM) 输出,误差向量大小 (EVM) 为5.1-8.5%.
- 实现了64-QAM输出,EVM为3x1内核的4.9-5.5%,处理数据的速度从6-20 Gbit/s.
结论:
- 拟议的光学矩阵卷积技术是一种可调和可重新配置的方法,用于高速信号处理.
- 这种方法有效地避免了OEO转换,并实现了低EVM的高阶调制格式,为先进的光通信系统铺平了道路.
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