A gradual light-weight waveguide has powerful light–issue conversation and thus can boost the nonlinear procedure. The investigation in the LNPhC slow mild waveguide began from the majority LNPhC. Iliew et al. used a bulk LNPhC As an instance that the majority bands can be utilized for stage matching. Search phrases: https://lithium-niobate-crystal92356.arwebo.com/55258087/the-smart-trick-of-lithium-niobate-crystal-that-nobody-is-discussing