Fig. 1. Schematic of the system

Fig. 2. Transmission amplitudes T₁₂ and T₂₁ versus normalized detuning x/κ_c1 for different phase differences. (a) θ=-π/2; (b) θ=0; (c) θ=π/2; (d) θ=π

Fig. 3. Transmission amplitudes T₁₂ and T₂₁ versus phase difference θ when normalized detuning is 0

Fig. 4. Transmission amplitudes T₁₂ and T₂₁ versus effective optomechanical coupling intensity G₂/G₁

Fig. 5. Transmission amplitudes T₁₂ and T₂₁ versus normalized detuning x/κ_c1 for different cavity damping rates. (a) κ_c2=15; (b) κ_c2=1; (c) κ_c2=0.5; (d) κ_c2=0.25