Optical nonreciprocity in a piezo-optomechanical system
Xiao Yu-Ming1, Liu Jun-Hao1, Wu Qin3, Yu Ya-Fei1, †, Zhang Zhi-Ming2, ‡
       

The transmission spectra Ta and Tc as a function of δ/κ for ϕ = π in the critical-coupled regime (κe = κ/2). The other parameters are (a) η = 0, (b) η = 2, (c) η = 3, (d) η = 3.6.