87250 ⎘
Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags; Manufacture of glass fibres or filaments; Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD] Means for heating preforms during or immediately prior to deposition
METHOD FOR MANUFACTURING OPTICAL FIBER GLASS PREFORM
#2USING SILICON TETRAFLOURIDE DURING POWDER-IN-TUBE (PIT) PROCESS
#3Plasma deposition process for producing an optical preform with a cladding glass layer of fluorine-doped quartz glass
#4Optical fiber preform having large size soot porous body and its method of preparation
#5Preform and method for manufacturing same
#6Fabrication method and device for porous optical fiber preform