title: Hybrid coding method of multiple orbital angular momentum states based on the inherent orthogonality.
abstract: We put forward a hybrid coding method of multiple orbital angular momentum (OAM) states based on the inherent orthogonality. Theoretical analysis shows this new coding method can tremendously improve the coding efficiency compared to the conventional way, and the OAM mode can be extended to all the transverse orthographic modes such as Bessel beams or Laguerre-Gauss modes. We also present a typical scheme to achieve the encoding of hybrid OAM states based on a concentric ring resonator array. We further suggest a digital device and a phase hologram pattern to decode the hybrid OAM states.
authors.forename: Hailong
authors.initials: H
authors.lastname: Zhou
authors.forename: Jianji
authors.initials: J
authors.lastname: Dong
authors.forename: Lei
authors.initials: L
authors.lastname: Shi
authors.forename: Dexiu
authors.initials: D
authors.lastname: Huang
authors.forename: Xinliang
authors.initials: X
authors.lastname: Zhang