A fiber production system , comprising - at least one molten forming member which enables the polymeric crude material to be used in fiber production to be heated and melted, - at least one cooling unit which provides filament structure to the crude material exiting the extrusion member and passing through the spinnerets by cooling it, and characterized by - at least one extrusion member which enables the molten crude material to be passed through at least one spinneret located at its end part, - rollers which enables the crude material to be heated above glass transition temperature or crystallization temperature and the fiber material in filament form to reach a certain crystallinity by being drawn at a certain tension, - at least one mobile laser device which is a fiber laser device, and which enables to form a balanced heat distribution and thus the defect in the filament structure to be eliminated by drawing via the heat and the rollers by applying laser beam (L) on the filament (F) during drawing the filaments (F) with the rollers , - at least one heated chamber which is located between any two rollers, applies heat on the material in order to increase crystallinity in the fiber material drawn with the rollers , and enables the continuity of the filament structure provided to the material, - at least one control member which enables to guide the mobile laser device to the related area according to the data it receives from at least one camera that can detect defect points in the filament structure during the drawing of the filaments (F) by the rollers , and to correct the areas with defect points by means of heat and drawing by applying the laser beam (L) locally on the filament structure, - at least one winding machine which is used for gathering the material in filament form during packaging. - at least one molten forming member which enables the polymeric crude material to be used in fiber production to be heated and melted, - at least one cooling unit which provides filament structure to the crude material exiting the extrusion member and passing through the spinnerets by cooling it, and characterized by - at least one extrusion member which enables the molten crude material to be passed through at least one spinneret located at its end part, - rollers which enables the crude material to be heated above glass transition temperature or crystallization temperature and the fiber material in filament form to reach a certain crystallinity by being drawn at a certain tension, - at least one mobile laser device which is a fiber laser device, and which enables to form a balanced heat distribution and thus the defect in the filament structure to be eliminated by drawing via the heat and the rollers by applying laser beam (L) on the filament (F) during drawing the filaments (F) with the rollers , - at least one heated chamber which is located between any two rollers, applies heat on the material in order to increase crystallinity in the fiber material drawn with the rollers , and enables the continuity of the filament structure provided to the material, - at least one control member which enables to guide the mobile laser device to the related area according to the data it receives from at least one camera that can detect defect points in the filament structure during the drawing of the filaments (F) by the rollers , and to correct the areas with defect points by means of heat and drawing by applying the laser beam (L) locally on the filament structure, - at least one winding machine which is used for gathering the material in filament form during packaging. <EOS>