Switch between the types of the symmetry breaking bifurcation in   optically induced photorefractive rotational double-well potential
  We study the possibility of switching the types of symmetry breaking bifurcation (SBB) in the cylinder shell waveguide with helical double-well potential along propagation direction. This model is described by the one-dimensional nonlinear Schr\"{o}dinger (NLS) equation. The symmetry- and antisymmetry-breakings can be caused by increasing the applied voltage onto the waveguide in the self-focusing and -defocusing cases, respectively. In the self-focusing case, the type of SBB can be switched from supercritical to subcritical. While in the self-defocusing case, the type of SBB can not be switched because only one type of SBB is found. 
Guihua Chen, Jianxiong Wu, and Zhihuan Luo
physics.optics nlin.PS