Based on the coupled mode theory, second harmonic generation (SHG) in the form of Cherenkov radiation from a channel waveguide has been investigated taking the propagation loss into account.

• 基于耦合模理论 ,分析了考虑传输损耗的条形波导中切伦科夫 (Cherenkov)二次谐波 (SHG)的问题。