We propose that the full Poincar\'{ e} beam with any polarization geometries can be pictorially described by the hybrid-order Poincar\'{ e} sphere whose eigenstates are defined as a fundamental-mode Gaussian beam and a Laguerre-Gauss beam. A robust and efficient Sagnac interferometer is established to generate any desired full Poincar\'{ e} beam on the hybrid-order Poincar\'{ e} sphere, via modulating the incident state of polarization. Our research may provide an alternative way for describing the full Poincar\'{ e} beam and an effective method to manipulate the polarization of light.
Categories: physics.optics