Advanced Progress on Χ(3) Nonlinearity in Chip-Scale Photonic Platforms (Invited Review)
Zhe Kang
,
Chao Mei
,
Luqi Zhang
,
Zhichao Zhang
,
Julian Evans
,
Yunjun Cheng
,
Kun Zhu
,
Xianting Zhang
,
Dongmei Huang
,
Yuhua Li
,
Jijun He
,
Qiang Wu
,
Binbin Yan
,
Kuiru Wang
,
Xian Zhou
,
Keping Long
,
Feng Li
,
Qian Li
,
Shaokang Wang
,
Jinhui Yuan
,
Ping-Kong Alexander Wai
and
Sailing He
χ(3) nonlinearity enables ultrafast femtosecond scale light-to-light coupling and manipulation of intensity, phase, and frequency. χ(3) nonlinear functionality in micro- and nano-scale photonic waveguides can potentially replace bulky fiber platforms for many applications. In this review, we summarize and comment on the progress on χ(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.