Fig. 3
From: Subwavelength grating-assisted silicon nitride edge coupler with relaxed alignment tolerance
Schematic of (a) the SWG (left) and solid (right) taper waveguide. (b) Effective refractive index (neff) of the SWG and solid waveguide according to the waveguide width at a wavelength of 1550 nm. (c) Transmission according to the taper length of SWG and solid waveguide at a wavelength of 1550 nm.
