en Optimum Designation of a Highly Nonlinear Silicon Waveguide with Ultra-flat Dispersion for Nonlinear Applications تخصصی Special پژوهشي Research A silicon waveguide is proposed in which dispersion value and its variation is effectively reduced over bandwidth. Dispersion tailoring is performed by tuning the structural parameters of the waveguide. Group velocity dispersion is varied between very low values of -1.1 and +3.3 ps/(nm.km) over an approximately 350-nm bandwidth for an optimum structure. Because of ultra-flat group velocity dispersion profile, higher order dispersions are also very low. Real part of nonlinear parameter for the optimum waveguide is 355.6 (W-1m-1) at 1550 nm. Therefore, a good balance between nonlinearity and dispersion is provided that makes the waveguide applicable for highly efficient implementation of nonlinear functions in 1.55-µm wavelength range. A silicon waveguide is proposed in which dispersion value and its variation is effectively reduced over bandwidth. Dispersion tailoring is performed by tuning the structural parameters of the waveguide. Group velocity dispersion is varied between very low values of -1.1 and +3.3 ps/(nm.km) over an approximately 350-nm bandwidth for an optimum structure. Because of ultra-flat group velocity dispersion profile, higher order dispersions are also very low. Real part of nonlinear parameter for the optimum waveguide is 355.6 (W-1m-1) at 1550 nm. Therefore, a good balance between nonlinearity and dispersion is provided that makes the waveguide applicable for highly efficient implementation of nonlinear functions in 1.55-µm wavelength range. Dispersion engineering, integrated optics, nonlinear optics, slot waveguide 481 484 http://opsi.ir/browse.php?a_code=A-10-1-217&slc_lang=en&sid=1 Zeinab Jafari Zeinab Jafari z_jafari@sutech.ac.ir 10031947532846002075 10031947532846002075 Yes Optoelectronic Research Center, Electrical and Electronic Department, Shiraz University of Technology, Shiraz, Iran Optoelectronic Research Center, Electrical and Electronic Department, Shiraz University of Technology, Shiraz, Iran Farzin Emami Farzin Emami Emami@sutech.ac.ir 10031947532846002076 10031947532846002076 No Optoelectronic Research Center, Electrical and Electronic Department, Shiraz University of Technology, Shiraz, Iran Optoelectronic Research Center, Electrical and Electronic Department, Shiraz University of Technology, Shiraz, Iran