基于微腔中克尔非线性效应实现高性能、片上集成的光频梳产生，是构建未来大容量、低能耗光互连网络的重要多波长光源技术。然而，微腔光频梳仍存在因热效应敏感、频谱转换效率低导致的频谱不稳定、泵浦功率高等问题，严重限制其在光互连系统的应用。针对这些难题，本项目拟研究新型硫系材料合成和生长工艺，制备超低损耗、高非线性、高光学稳定性的硫系薄膜，研制高品质硫系微环，并开展片上光频梳产生的研究。通过深入分析微环及光频梳面临的根本性物理限制，通过创新的“薄膜组分与分子结构工艺精细化调控”和“硫系材料正负热光系数补偿”方法研制复合微环，解决微环非线性与色散精确调控和自发热补偿两大关键科学问题，揭示热效应、色散对微环的非线性参量过程的影响机制，构建微环物质组成和器件结构与高效、稳定频梳产生的理论模型，实现低泵浦功率、高稳定、光谱平坦的光频梳产生，满足低成本高效率波分复用光互连传输系统对高品质光源的需求。

Optical frequency combs (OFC) based on Kerr microcavity have been intensively investigated as a suitable high-quality light source for optical network. The feasibility of OFC has been experimentally verified in large capacity optical interconnect system. However, the microcavity-based OFC suffers from spectral instability and high pumping power threshold due to the thermal effect and low spectral conversion efficiency, which limit their practical applications. To overcome these difficulties, we propose, in this project, a study for kerr OFC by high quality chalcogenide-based high quality microring fabrication with ultra-low loss, high optical stability and high refractive index based on our novel manufacturing method. High performance on-chip OFC generation by the proposed chalcogenide OFC is going to be investigated . Through in-depth analysis of fundamental physical limitations of micro-rings and OFC, we innovatively propose the methods including "fine control of film composition and molecular structure" and" the microring with ultralow thermal coefficient composed of chalcogenide materials with positive and negative thermal coefficient", to resolve the two key technical issues of “precise control of micro-ring nonlinearity and dispersion” and “self-heating compensation”. Furthermore, this project tries to unfold the influence of thermal effects and dispersion on the nonlinear parametric process of microring. The theoretical model related to the material composition of microring and device structures will be built. The generation and manipulation of high-performance OFC will be investigated, for realizing the low-pump power, high-stability, wideband flat OFC generation, so as to meet the high-quality light source demand for in low-cost and highly efficient wavelength division multiplexed optical interconnection networks.