Fig. 1. Schematic diagram of double-L-G-cavity optomechanical system^[30,33,34]

Fig. 2. Real part Re[εT], Re[εT'], and imaginary part Im[εT], Im[εT'] of probe field as a function of normalized frequency detuning x/γb. (a) Real part, unresolvable sideband region; (b) imaginary part, unresolvable sideband region; (c) real part, resolvable sideband region; (d) imaginary part, resolvable sideband region

Fig. 3. Real part Re[εT] of probe field as a function of normalized frequency detuning x/γb and ideal OMIT dip x0 as a function of coupling strength ga between two cavities. (a)(b) Real part Re[εT] of probe field as a function of normalized frequency detuning x/γb; (c)(d) ideal OMIT dip x0 as a function of coupling strength ga between two cavities

Fig. 4. Real part Re[εT] of probe field as a function of β/κa2

Fig. 5. Time delay τ as a function of normalized frequency detuning x/γb

Fig. 6. Time delay τ as a function of normalized frequency detuning x/γb for different values of ga. (a) κa1=κa2=3ωb; (b) κa1=κa2=0.2ωb