Combined fixture used for fixing optical fiber stress rod

Abstract

The invention relates to a combined fixture used for fixing an optical fiber stress rod. The combined fixture comprises a left fixing component and a right fixing component which are respectively used for clamping two sides of an optical fiber stress rod, wherein the left fixing component is of a hollow tubular shape, the outer surface of the left fixing component is provided with a flange, the flange is provided with a plurality of radial screw holes, each screw hole is internally provided with a screw pile which is provided with a clamping head and is connected with the screw hole by virtue of a screw thread, and the a screw pile is used for clamping one side of the optical fiber stress rod to be processed; one end of the right fixing component is of a closed tubular shape, the outer surface of the right fixing component is provided with a flange, the flange is provided with a plurality of radial screw holes, each screw hole is internally provided with a screw pile which is provided with a clamping head and is connected with the screw hole by virtue of a screw thread, and the clamping head is used for clamping the other side of the optical fiber stress rod to be processed; and a center hole is arranged at the center of the closed end of the right fixing component and is used for being matched with a center of grinding equipment, thus the whole fixture and the rotating shaft of the grinding equipment are coaxial. The combined fixture provided by the invention overcomes the defect that a clamping mechanism is very dependent on cone-shaped end of the optical fiber stress rod in the traditional scheme, and an optical fiber stress rod obtained by grinding has good circular symmetry.

Description

technical field [0001] The invention relates to the processing of optical fiber stress rods during the preparation process of polarization-maintaining optical fibers, in particular to a combination fixture for fixing optical fiber stress rods. Background technique [0002] Optical fiber stress rods are one of the important materials used to manufacture optical fibers. Taking the manufacturing process of Panda-type polarization-maintaining optical fiber as an example, it first uses PCVD to manufacture optical fiber preforms and high-concentration boron-doped stress rods respectively; then uses quartz deep hole technology to punch two pre-designed symmetrical circular holes in the optical fiber preforms , and then insert the boron-doped stress rod into the perforated optical fiber preform to form a panda-shaped polarization-maintaining optical fiber preform; finally, the panda-shaped polarization-maintaining optical fiber preform is drawn through a drawing tower to obtain a pa...

AI Technical Summary

Problems solved by technology

However, using a tapered sleeve top to fix the fiber stress rod is only suitable for fiber stress rods with a single diameter and a relatively regular tapered end. In the actual production process, fiber stress rods with various diameters will be encountered, and most optical fib

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