A sluggish mild waveguide has potent light-weight–issue conversation and therefore can increase the nonlinear method. The research from the LNPhC gradual gentle waveguide started from the bulk LNPhC. Iliew et al. applied a bulk LNPhC For instance that the bulk bands can be used for phase matching. could be consulted https://lithium-niobate-crystal17282.blogrenanda.com/38685622/a-review-of-lithium-niobate-crystal