Fig. 8
From: Subwavelength grating-assisted silicon nitride edge coupler with relaxed alignment tolerance
(a) Simulated coupling efficiency between the SMF-28 fiber and SWG-assisted SiN edge coupler as a function of the fill factor and grating period of SWG at a wavelength of 1550 nm. (b) Simulated coupling efficiency of the proposed edge coupler and conventional single-tip edge coupler with an SMF-28 fiber over a wavelength range of 1450–1650 nm, and (c) coupling efficiency as a function of horizontal misalignment at a wavelength of 1550 nm.
