FIELD: mechanical engineering. SUBSTANCE: cooler is arranged below melting furnace for melting blank from which optical fiber is to be produced, and for cooling optical fiber drawn from blank molten in melting furnace. Cooler has at least one heat-exchanger of predetermined length, which is mounted so as to enclose fiber drawn from melting furnace for cooling drawn optical fiber. Heat-exchanger is made from thermoelectric cooling material allowing heat to be released from one heat-absorbing surface to other heat-absorbing surface, when electric power is supplied through said one heat-absorbing surface. Heat-exchanger is made tubular, with heat-absorbing surface of cooler enclosing optical fiber of predetermined length drawn from melting furnace along drawing direction. Drawn optical fiber is cooled as it is passed through tubular cooler. Cooler is further provided with auxiliary cooler attached to heat-emitting surface and adapted for cooling released heat. EFFECT: increased cooling efficiency by providing intensified drawing of optical fiber without necessity of increasing height of fiber drawing column. 12 cl, 9 dwg
