Kang, ZheMei, ChaoZhang, LuqiZhang, ZhichaoEvans, JulianCheng, YujunZhu, KunZhang, XiantingHuang, DongmeiLi, YuhuaHe, JijunWu, QiangYan, BinbinWang, KuiruZhou, XianLong, KepingLi, FengLi, QianWang, ShaokangYuan, JinhuiWai, P. K. A.He, Sailing2021-08-142021-08-142021-08-142021-01-0110.2528/PIER20122108https://infoscience.epfl.ch/handle/20.500.14299/180682WOS:000675883900002chi((3)) nonlinearity enables ultrafast femtosecond scale light-to-light coupling and manipulation of intensity, phase, and frequency. chi((3)) nonlinear functionality in micro- and nanoscale photonic waveguides can potentially replace bulky fiber platforms for many applications. In this Review, we summarize and comment on the progress on chi((3)) nonlinearity in chip-scale photonic platforms, including several focused hot topics such as broadband and coherent sources in the new bands, nonlinear pulse shaping, and all-optical signal processing. An outlook of challenges and prospects on this hot research field is given at the end.Engineering, Electrical & ElectronicPhysics, AppliedTelecommunicationsEngineeringPhysicsfrequency comb generationoctave-spanning supercontinuumself-phase-modulationsilicon wave-guidestimulated brillouin-scatteringzero-dispersion wavelengthsparabolic pulse generationlarge optical nonlinearitymidinfrared supercontinuumbroad-bandtext::journal::journal article::research article