Optical fiber rub twist device

Abstract

The invention discloses an optical fiber rub twist device, and belongs to the technical field of auxiliary facilities in optical fiber production. The optical fiber rub twist device comprises a machine frame, a rub twist wheel reciprocate driving mechanism, and a rub twist wheel; an upper orientation wheel supporting mechanism and a lower orientation wheel supporting mechanism are arranged on the machine frame in an upper-lower opposite manner; an upper orientation wheel is arranged on the upper orientation wheel supporting mechanism, a lower orientation wheel is arranged on the lower orientation wheel supporting mechanism; the upper orientation wheel and the lower orientation wheel are arranged in an opposite manner; the rub twist wheel reciprocate driving mechanism is arranged on the machine frame between the upper orientation wheel supporting mechanism and the lower orientation wheel supporting mechanism; the rub twist wheel is connected with the rub twist wheel reciprocate driving mechanism; the distance from the upper orientation wheel to the rub twist wheel is equal to that from the lower orientation wheel to the rub twist wheel; optical fiber is introduced into the rub twist wheel via the upper orientation wheel, and is delivered out from the lower orientation wheel under rub twisting conditions by the rub twist wheel; the moving path of the optical fiber shapes like S. Damage of optical fiber is avoided, optical fiber coating layer concentricity is ensured, and optical fiber PMD is reduced effectively.

Description

technical field [0001] The invention belongs to the technical field of auxiliary facilities in optical fiber production, and in particular relates to an optical fiber twisting device. Background technique [0002] The purpose of twisting the optical fiber is to make the optical fiber rotate clockwise or counterclockwise at a certain frequency, number of turns and speed during the drawing process, thereby reducing the polarization mode dispersion of the optical fiber. The English abbreviation of polarization mode dispersion is PMD (English full name: Polarization Mode Dispersion). [0003] It is a common practice to set a pair of twisting devices at the end of the wire drawing equipment to twist the optical fiber to reduce the PMD value of the optical fiber, and experiments have proved that this measure has a good effect on reducing PMD. However, since the anti-frustration twisting device twists the optical fiber at a certain angle and speed by two twisting guide wheels, one...

AI Technical Summary

Problems solved by technology

However, since the anti-frustration twisting device twists the optical fiber at a certain angle and speed by two twisting guide wheels, one in front and one behind, the flexibility of the rotation of the twisting guide wheels, surface quality and dynamic balance state etc. are extremely strict, and in actual use, it is often difficult to adjust the two twisting guide wheels to be in a good rubbing state for the optical fiber. More precisely, the user is required to have enough Professional level

In addition, under high-speed wire drawing conditions, it is easy to cause fiber breakage or large fluctuations in PMD value, and when the fiber breaks, the fiber will hit the twisting wheel, causing scratches on the twisting wheel, and once the twisting wheel is scratched, Then the scratch will scratch the fiber coating, and also cause the fiber to break during the drawing process

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