Fibre Manufacture Single Mode optical fibre with denser core glass World's first single-mode optical communications fibre 1965 Three early optical fibre-making processes Starting Optical Fibre Drawing Silica Fibre Fabrication Fibre preform deposition - Ian Peake? Core glass being deposited on the inside of a rotating Silica tube Charles Kao watching fibre fabrication The heated preform end is drawn down into a thin fibre Fibre preform being drawn into fibre using a graphite furnace. John Gannon & Alex Robertson