Optical nonreciprocity in a piezo-optomechanical system |
The transmission spectra Ta and Tc as a function of δ/κ for ϕ = 0 in the over-coupled regime (κe ≈ κ). The other parameters are (a) η = 0, (b) η = 0.3, (c) η = 1.5, (d) η = 2.5, (e) η = 3, (f) η = 3.3. |