Effects on structure of potential profile of rightward traveling solitons for (a) θ = 30°, (b) θ = 45°, and (c) θ = 75°, with parameters taking as κ_e = 1.504, n_2d(1d) = 0.1, n_i(1d) = 0.2, Z = 0.01, T_1d(i) = 10^–5, T_2d(i) = 10^–4, T_i(e) = 0.3, v_phξ = 0.045, v_phη = 0.045, M_{1 d(2d)} = 150, ε = 0.1, and U₀ = 0.09.