Optical transmission line
OwnerAustin N. Stantoninventor
Life of this patent
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Abstract
A flexible hollow glass tube of optical fiber dimensions provides a central light passage and serves as an optical transmission line characterized by substantially less absorption and distortion of signals superposed on transmitted light waves. A metal rod located within a preform evaporates as the preform is heated and drawn, providing a convenient method of reflectively coating the internal surface of small tubes.
Claims3
A process of continuously drawing heated preform glass tube in encircling heat radiating relation to an internal source of light reflecting evaporable metal rod to produce a hollow tube having an internal surface coating of light reflecting material drawn simultaneously with the tube.
A method of making an optical transmission line comprising maintaining a large diameter annular zone of a preform glass tube at drawing temperature, supporting a rod of evaporable light reflecting metal rods within the annular zone, evaporating the light reflecting material while drawing the ductile glass from the annular zone into a hollow tube to provide an internal light reflective coating on the tube drawn simultaneously therewith.
Dependencies are inferred from the claim text.