Asymmetric scattering and nonorthogonal mode patterns in optical microspirals
Asymmetric scattering and nonorthogonal mode patterns in optical microspirals
Quasibound states in an open system do not in general form an orthogonal and complete basis. It is, however, expected that the nonorthogonality is weak in the case of well-confined states, except close to a so-called exceptional point in parameter space. We present numerical evidence showing that for passive optical …