Optics and Photonics Society of Iran

Abstract- Non-canonical optical vortex is a combination of two canonical optical vortices with the topological charges of ±1. Non-canonical optical vortices have a specific anisotropy and orientation. Anisotropy of two non-canonical optical vortices which adjacent to each other changes their path in the transverse plan of the beam. In this article, simulation and experimental results of the effect of anisotropy of two optical vortices on the trajectory of each other are provided. For this purpose at first, propagation of optical vortices in free space is simulated and then their propagation is experimentally investigated. Simulation and experimental results show that, anisotropy of two neighbor optical vortices effects on their trajectory. While anisotropy difference is less than, two optical vortices rotate around each other during propagation. Direction of rotation of two optical vortices around each other depends on the optical vortices anisotropy. If anisotropy difference of optical vortices is more than, two optical vortices will be annihilated.