在模数转换系统中, 光模数转换(OADC)技术可增加系统带宽, 提高采样速率, 克服电子系统的瓶颈, 成为目前研究者们研究的热点。讨论了光模数转换技术的分类, 介绍了各类光模数转换技术的基本原理、实现方法以及技术特点。基于高速光采样和光量化, 深入分析了采样脉冲生成、多通道并行复用、空间干涉、光学非线性效应应用等关键技术, 并介绍了相关技术的研究进展和技术指标。

In analog-to-digital conversion systems, the optical analog-to-digital conversion (OADC) technology becomes a research hotspot because it can increase the system bandwidth, improve the sampling rate and overcome the bottleneck of electronic systems. The classification of OADC technology is discussed. The fundamental principle, implementation method and technical feature of various OADC technologies are introduced. Key technologies, which include sampling pulse generation, multichannel parallel multiplexing, space interferometry and optical nonlinear effect application, are deeply analyzed based on high-speed optical sampling and optical quantizing. The research progress and technology index of the related technologies are introduced.