Optical fiber cutting device

Abstract

The invention relates to an optical fiber cutting device which is formed by a large core diameter cutter, a numeric display micrometer, a soft LED point light source, a microscope, a display connected to the microscope, and a 45-degree mirror. Through a mode of rotating a special optical fiber, after the characteristic area (stress area) of the optical fiber is in a horizontal or vertical symmetrical state relative to the knife feed position of a diamond cutter, the cutting is carried out, the high precision cutting of special optical fibers such as a panda type optical fiber, an octagonal optical fiber, a bow-tie type optical fiber, a straight line fiber, and a photonic crystal optical fiber can be realized, the fiber cutting angle is small, the cutting end face is smooth and has no tail, and the repeatability is high.

Description

technical field [0001] The invention relates to the field of optical fiber process equipment, in particular to the field of special optical fiber, such as the field of large core diameter polarization-maintaining optical fiber process equipment. Background technique [0002] Special optical fibers refer to panda-type polarization-maintaining fibers, bow-tie-type polarization-maintaining fibers, in-line fibers, photonic crystal fibers, octagonal fibers, hexagonal fibers, and circular fibers with a cladding diameter greater than 600 μm. [0003] Optical fiber cutting mainly refers to the optical fiber cutting knife, which cuts the optical fiber after stripping the coating layer at a specific angle. The processing process is that the left and right clamps of the cleaver respectively step up to strip the coated optical fiber, use a diamond blade to scratch tiny cracks on the surface of the optical fiber, and at the same time apply a certain pulling force to make the optical fibe...

AI Technical Summary

Problems solved by technology

The general requirement is that the cutting angle error is small when viewed from the side, and the end face is flat without tailing or edge (crash), especially in the process of optical fiber fusion, if the cutting angle is greater than 0.7° or the tailing exceeds the diameter of the stress zone by more than 20%, Can not meet the requirements of high quality welding

[0004] Existing optical fiber cutting equipment can handle ordinary double-clad optical fibers, such as GDF-20 / 400, etc. in the process of processing, but when processing panda-shaped optical fibers, octagonal optical fibers, bow-tie optical fibers, and a When using special optical fibers such as font optical fibers and photonic crystal optical fibers, the cutting effect is often not satisfactory, and high-quality and high-repeatability cutting cannot be achieved.

At present, the mainstream suppliers of optical fiber cutting equipment, such as Vytran, Fujikura, and 3Sae, etc., when cutting polarization-maintaining optical fibers or other special optical fibers, the cutting knife cannot identify the positions of the two stress axes of the optical fiber or other optical fiber characteristic areas. During the pulling process, the same pulling force cannot guarantee that the end face is flat and has no tail when cutting at various axial angles (such as cat's eye position 0°, 15°, 25°...)

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