This work was supported by the National Natural Science Foundation of China(Grant Nos.11904169 and 91950106);the Fundamental Research Funds for the Central Universities(Grant No.NE2022007);the Natural Science Foundation of Jiangsu Province(No.BK20190383);Postdoctoral Science Foundation of Jiangsu Province(No.2020Z224),China Postdoctoral Science Foundation(No.2020M681576);the Top-notch Academic Programs Project of Jiangsu Higher Education Institutions。
Asymmetric mode transformation in waveguide is of great significance for on-chip integrated devices with one-way effect,while it is challenging to achieve asymmetric nonlinear-mode-conversion(NMC)due to the limitation...
supported by the National Natural Science Foundation of China (NSFC)(Grant Nos. 61705013 and 61378018);the 111 Project (No. B07013);the Program for Changjiang Scholars and Innovative Research Team in University (No.IRT_13R29).
We studied the mode-conversion process of terahertz pulses from a planar subwavelength waveguide to a tilted rectangular subwavelength waveguide. An unusual wavefront rotation, which led to an extra conversion t ime, ...