在光通信与光互连系统中，对光信号进行全光调控，避免了光电光转换，能极大地降低系统的功耗，从而提高系统的灵活性和可靠性。利用超快调变微腔中的光绝热转换，可实现光信号的波长转换与传播速度减慢甚至停止，已成为国际上的前沿热门课题。其关键技术在于如何在片内对微腔与耦合腔进行全光调控并实现光绝热转换。本项目提出一种狭缝填充高非线性介质的硅基多模微腔及其耦合腔结构，采用片内注入的低Q模式泵浦光产生非线性效应调控微腔方案，实现高Q模式或耦合腔超模上光信号的绝热转换，具有便于集成、降低功耗的优点。着重研究微腔与耦合腔的片内全光调控机理和光绝热转换的动态特性，探索其在光信号的波长转换与慢光存储上的应用，拟对工作机理、器件设计、工艺制作与系统实验开展全方位研究，在硅基光子学平台上制造出全光绝热调控微腔，实现转换效率超过30%的波长转换器与全光动态可控的慢光存储，为未来光网络和光子集成芯片提供技术储备。

For optical communications and optical interconnects, all-optical control of light allows to avoid a large number of optical-electro-optical conversions thus reducing the network total power budget and improving the flexibility and reliability of systems. All-optical adiabatic tuning of a microcavity has recently attracted great attentions, due to the universal applications, including optical wavelength conversion and dynamic optical storage. However, it is still difficult to obtain adiabatic transition through intra-chip all-optical control of a microcavity or coupled microcavities. This project proposes a silicon multimode microresonator with slot filled by highly nonlinear material. The pump pulse at a low-Q mode will cause nonlinear effect and ultrafast tune the microcavity, making the adiabatic manipulation of a signal pulse at a high-Q mode or suppermode in coupled cavities possible. The advantage of this scheme is the easy integration and low power consumption. We will study the principle of intra-chip all-optical tuning of microcavity and the dynamic characteristics of adiabatic transition process, and then explore the applications in optical wavelength converter and dynamic optical storage. The investigation on basic theory, design, fabrication and measurement will be performed. The all-optical adiabatic tuning of a cavity and coupled cavities will be demonstrated on a silicon photonics platform. Finally, we will realize a wavelength converter with a conversion efficiency more than 30% and an all-optical dynamic optical storage, providing technical solution for future optical network and photonic integrated chips.