We determine that the transverse dimensions of cylindrical and rectangular dielectric waveguides with the highest effective nonlinearity are sub-wavelength in size. For a rectangular waveguide, we find an asymmetric cross-section is optimal.
© 2004 Optical Society of America
M. A. Foster, K. D. Moll, and A. L. Gaeta, " Optimal waveguide dimensions for nonlinear interactions," in Nonlinear Optics: Materials, Fundamentals and Applications, Technical Digest (CD) (Optical Society of America, 2004), paper ThC2.