PRODUCTION OF PREFORM ROD FOR OPTICAL FIBER FOR SINGLE-PHASE POLARIZED LIGHT
PURPOSE:A glass rod having the core layer and the clad layer is softened by heating for deformation, then the external shape is processed into a round form to produce the titled preform rod of high accuracy in high efficiency. CONSTITUTION:A glass rod 1 consisting of the concentric core layer 2 and...
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Main Authors | , , , , |
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Format | Patent |
Language | English |
Published |
12.11.1983
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Subjects | |
Online Access | Get full text |
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Summary: | PURPOSE:A glass rod having the core layer and the clad layer is softened by heating for deformation, then the external shape is processed into a round form to produce the titled preform rod of high accuracy in high efficiency. CONSTITUTION:A glass rod 1 consisting of the concentric core layer 2 and clad layer 3 is heated by passing through the heat zone H provided with the furnace 4 for softening, passed through the forming zone provided with rollers 5 to apply external forces to deform the rod into an oval in cross section. Then, a glass layer of the same composition as the clad layer 3 is accumulated on the external surface of the rod by the externally accumulating CVD method into a round rod. The present process gives a preform rod for single-phase polarized light with a desired core shape only by deforming an already made preform rod. |
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Bibliography: | Application Number: JP19820076347 |