Simulated output pulse shapes [(a)–(e)] and optical spectra [(f)–(j)] in orthogonal polarization directions when input amplitude ratio (A₂/A₁) is set as: 3/1, 2/1, 1/1, 1/2, and 1/3. Others are: θ = 0°, ΔT = 0 ps, and Δφ = π/2.