A slow mild waveguide has potent mild–make a difference interaction and therefore can enhance the nonlinear approach. The research of your LNPhC sluggish light-weight waveguide started from the bulk LNPhC. Iliew et al. utilized a bulk LNPhC As an instance that the bulk bands can be employed for phase matching. https://cruztqlfw.blogginaway.com/33047348/lithium-niobate-crystal-an-overview