Data decoding of integer orbital angular momentum beams based in straight edge diffraction nanometric film

Abstract

The orbital angular momentum revolutionized optical communications, like an OAM beam of light need not be interrupted for the transfer of data, provides immunity to electromagnetic interference, allows increase bandwidth, rate and transmission capacity information, making the process more efficient. Supported by the ability to encode information on OAM modes of light, is necessary the development of a decoder that integrate to hardware systems, solve the problem of current techniques, which main disadvantage is to require the use of additional energy sources, increasing the implementation cost, and make it less compact. The purpose of this report is towards modelling an optoelectronic decoder system which discriminates the orbital angular momentum mode in the beam, associated with transmitted information and translates it from the selected transmission channel (i.e. outdoor atmosphere) to a recognizable information. Current methodology proposed for this purpose, integrates the use of thin films of nanometric order, whose design features allows interaction with OAM beams that, can be distinguish its topological charge.

Keywords

• Orbital Angular Momentum
• Thin Films
• Encoding
• Decoding
• Topological Charge
• Optical Communications