Generation and detection of optical vortices using all fiber-optic system

摘要: Abstract We demonstrate simultaneous generation, propagation and detection of optical vortices using all fiber-optic system. A Y-coupler was used for generating spherical doughnut beams, simultaneously. Gaussian (TEM 00 ) beam emitted from CW red He–Ne laser is coupled into the fiber coupler converted vortex via second arm which propagates with azimuthal phase dependence having well defined orbital angular momentum. The structure detected by interfering both beams simple interferometer. present system might find application detecting, sensing physical parameters cost effective detecting vortices.