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A process for the preparation of a polarization-maintaining optical fibre preform for the production of a polarization-maintaining optical fiber and polarization-maintaining optical fiber
A process for the preparation of a polarization-maintaining optical fibre preform for the production of a polarization-maintaining optical fiber and polarization-maintaining optical fiber
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机译：制备用于制造保偏光纤和保偏光纤的保偏光纤预制棒的方法
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摘要
The present invention relates to a process for the production of a polarization-maintaining optical fiber, consisting of a core region and in the fiber body embedded voltage generating elements with the following process steps: producing a core preform for the core region, by the use of a separating art on the inside on a substrate tube with a subsequent collapse of the internally coated substrate tube, creating recesses on the core preform by means of a removal of the material on the outer surface of the core preform parallel to the longitudinal axis of the core preform located on diametrically to each other positions, filling the recesses with voltage generating rods in the densest possible rods packing in a freely selectable first ausfüllgeometrie, optionally an additional filling up the recesses with no voltage generating rods in a second ausfüllgeometrie, coating of the filled core preform having a jacketing pipe, preparation of the jacketed core preform for a fiber drawing process, pulling of the covered arrangement for optical fiber. A preform for the production of a polarization-maintaining optical fiber contains a core preform having a core zone and a casing region, as well as a surrounding the core preform jacketing tube, as well as power elements contained in the area of the jacket, wherein the voltage generating elements in the form of recesses are formed of the cylinder peripheral area, whereby the recesses with doped rods and / or undoped small rods are filled, the filling of the small rods a first and / or a second geometric arrangement forms.
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