基于硅基集成的新型光学数模转换器的研究

Digital-to-analog converters and analog-to-digital converters are bridges between analog worlds and digital world. The traditional digital-to-analog and analog-to-digital conversion technologies are faced with great bottlenecks in ultra-high speed and high resolution applications due to the effects of quantum tunneling effects, electromagnetic interference, aperture jitter and other factors. The optical conversion method has the advantages of high sampling rate, small aperture jitter and no interference from electromagnetic interference, which can inject new vitality into the development of signal processing field for ultra-wideband communication, high-speed signal generator and all-optical information processing..The reported optical digital-to-analog converters are mostly using discrete device combinations or low-density integration, with relatively large volumes, high cost and high power consumption. As silicon photonics has high integration density, low power consumption, and be compatible with mature CMOS technology, research has become increasingly active in recent years. This project proposes a new design scheme of optical digital-to-analog converter based on silicon platform, which integrates the mode multiplexer, beam splitter, modulator and detector to accomplish a new optical digital-to-analog converter chip with single wavelength, small footprint, low power consumption, as well as low cost. This can lay the foundation for integrated silicon multi-functional information processing system.

数模转换器和模数转换器是沟通模拟世界和数字世界之间的桥梁。传统的电学数模和模数转换技术由于量子隧穿效应、电磁干扰、孔径抖动等因素的影响，其在超高速和高分辨率的应用上面临巨大瓶颈。而光学转换方式具有采样速率高、孔径抖动小、不受电磁干扰等优势，可以为超宽带通信、高速信号发生器、全光信息处理等信号处理领域的发展注入新的活力。. 已报道的光学数模转换器多采用分立的器件组合或者低密度的器件集成，体积相对较大，而且成本和能耗较高。硅基光集成具有高集成度、低功耗、与成熟的CMOS工艺兼容的特点，近年来相关研究日趋活跃。本项目提出一种新型光学数模转换器的设计方案，该方案基于硅基平台，采用高密度集成一体化的思想，将模式复用器、分束器、调制器以及探测器有机地整合在一起，研制出单波长、超小型、低能耗、低成本的片上集成的新型光学数模转换器芯片，为实现硅基集成的多功能信息处理系统奠定了基础。

数模转换器和模数转换器是沟通模拟世界和数字世界之间的桥梁。传统的电学数模和模数转换技术由于量子隧穿效应、电磁干扰、孔径抖动等因素的影响，其在超高速和高分辨率的应用上面临巨大瓶颈。而光学转换方式具有采样速率高、孔径抖动小、不受电磁干扰等优势，可以为超宽带通信、高速信号发生器、全光信息处理等信号处理领域的发展注入新的活力。.已报道的光学数模转换器多采用分立的器件组合或者低密度的器件集成，体积相对较大，而且成本和能耗较高。硅基光集成具有高集成度、低功耗、与成熟的CMOS工艺兼容的特点，近年来相关研究日趋活跃。本项目提出一种新型光学数模转换器的设计方案，该方案基于硅基平台，采用高密度集成一体化的思想，将模式复用器、分束器、调制器以及探测器有机地整合在一起，研制出一款单波长、超小型、低功耗、低成本的片上集成的新型光学数模转换器芯片，为实现硅基集成的多功能信息处理系统奠定了基础。