We propose and demonstrate improved and accurate design criteria for mode-selective nonlinear waveguides. using a complete multimode theoretical model. Being different from previously reported schemes where only the cross section was considered. the nonlinear conversion efficiency can be further enhanced in the proposed scheme by means of elaborately designing both the waveguide lengt... https://www.markbroyard.com/mega-offer-maybelline-fit-me-fdn-matte-pore-355-coconut-for-sale-top-super/