We theoretically introduce a mechanism for achieving the mechanical analog of optical Kerr nonlinearity. By exploiting optomechanical interactions in deformable waveguide structures, a nonlinear phase shift proportional to the optical field intensity is induced. Resulting Kerr coefficients several orders of magnitude larger than the intrinsic silicon optical Kerr coefficient are predicted.
Bibliographical noteFunding Information:
H.X.T. acknowledges support from an NSF career award (NSF Grant No. ECCS-0846919) and a seedling support from DARPA/MTO. W.H.P.P. would like to thank the Alexander-von-Humboldt foundation for providing a postdoctoral fellowship.