격자보조 방향성결합기 구조에 기초한 도파로 광소자 해석을 위한 시영역 모델

A novel time-domain modeling method, which is very useful for analyzing optical waveguide devices based on grating-assisted directional coupler structure, is proposed. The numerical solution is derived from the time-dependent coupled-wave equations using the split-step algorithm and Crank-Nicholson scheme.