Desing of phase masks for implementing in an orbital angular momentum multiplexing/demultiplexing system in free space

Since the discovery of optical vortex (OV) until its application, they have been extensively exploited in the field of optics and photonics. In the last decade, this research has intensified in optical communications, where OV can be implemented as a new multiplexing technique that allows high transmission rates and scalability in systems due to their compatibility with current modulation and multiplexing techniques. In this work, we design phase masks for implement in an Orbital Angular Momentum Multiplexing / Demultiplexing system. We used a superposition of phase mask of a Laguerre-Gaussian beam with linear carriers to allow redirection of the beam to reduce the complexity of the demultiplexing system.