Fiber Rotation Device

Abstract

The invention relates to an optical fiber rotating device, which comprises a support frame, two positioning wheels arranged at intervals, a twisting wheel, an extension rod and a driving mechanism, the two positioning wheels are fixed on the support frame, and the wheels are located on the same plane A. Both ends of the extension rod are inserted into the support frame, and one end is connected to the axis of the twisting wheel, so that the twisting wheel is located between the two positioning wheels, and the wheel is parallel to plane A. The other end of the extension rod It is connected with the driving mechanism so that the twisting wheel can reciprocate along the direction perpendicular to the plane A; the contact point between the twisting wheel and the optical fiber is properly deviated from the connection between the contact points of the two positioning wheels and the optical fiber, so that the optical fiber is in the When the twisting wheel reciprocates, it is driven to rotate. The rotation device provided by the invention improves the polarization mode dispersion performance of the optical fiber, and has a simple structure and convenient operation.

Description

technical field [0001] The invention relates to the technical field of optical fiber production, in particular to an optical fiber rotating device. Background technique [0002] In the process of optical fiber drawing, the optical fiber cannot reach a completely circular state. Usually, the polarization mode dispersion of the optical fiber becomes larger due to the uniformity of the thermal field of the drawing furnace and the influence of uneven external force, which seriously affects the transmission performance of the optical fiber. Therefore, In the current drawing process, the optical fiber after the coating is cured will be twisted by the optical fiber rotating device, and the rotating device assigned the corresponding program will regularly twist the optical fiber, and the elastic torsional strain of the optical fiber at the optical fiber twisting device will be along the The optical fiber is passed up to the melting zone at the end of the preform, that is, the optica...

AI Technical Summary

Problems solved by technology

[0003] At present, the mainstream optical fiber rotation device uses two twisting wheels to clamp the optical fiber and twist it in reverse to twist the optical fiber. This method requires a complex structure of the rotating device, and at the same time, the unevenness of the two twisting wheels will affect the fiber coating. , there is a great hidden danger in quality. Another rotating device squeezes the optical fiber through a single "V" groove twisting wheel, and then gives a certain twist value to the optical fiber through the sinusoidal twisting of the twisting wheel. From a large amount of data From the point of view, although this structure has a reduced influence on the optical fiber coating, the torsion stability is not as good as that of the double twisting wheel rotation device, and the "V" groove twisting wheel still has a certain influence on the optical fiber coating.

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