Influence of Two-Frequency Radiation Intensity Fluctuations on the Output Signal of a Vortex Optical Fiber Forming OAM Address in Polyharmonic Sensor Technology

A schematic diagram of a RoF radio-optic system with vortex signals is presented, in which the radio frequency determined by difference between wavelengths two lasers. It assumed that generation signal can be performed through fiber-optic periodic structure, obtained using technology similar to manufacture long-period fiber Bragg gratings. The parameters grating are modeled assuming fundamental light-guide mode (LP01) applied specified element, and higher-order (LP11) reflected. was found distortion reduced introducing apodization chirping this structure. following optimal have been estimated: chirp multiplier functions, at distortions amplitude phase signal, as well appearance an unwanted angle distortion, will minimal. shown such gratings exploited addressed sensors systems orbital angular momentum (OAM) lightwave unique sensor address.