Optical fiber coating device

Abstract

The invention relates to the technical field of optical fiber production devices, and discloses an optical fiber coating device. The optical fiber coating device comprises a die holder, a driving mechanism and a heating mechanism, the die holder is used for bearing an optical fiber coating die, the optical fiber coating die is configured to lay a resin layer on the surface of an optical fiber, thedriving mechanism is configured to drive the die holder and drive the optical fiber coating die to rotate, and the heating mechanism is configured to heat the die holder. The arranged heating mechanism can provide a proper temperature for the optical fiber coating mold, so that the quality of the resin layer applied to the surface of the optical fiber by the optical fiber coating die is ensured;and the arranged driving mechanism can drive the die holder to drive the optical fiber coating die to rotate. Compared with like devices directly applying force to the optical fiber through a twistingmechanism in the prior art, the optical fiber coating device of the invention can rotate the optical fiber while coating the optical fiber with the resin layer in order to reduce the PMD of the optical fiber, prevent the optical fiber from being broken or the surface of the optical fiber from being damaged and ensure the quality of the optical fiber.

Description

technical field [0001] The invention relates to the technical field of optical fiber production equipment, in particular to an optical fiber coating device. Background technique [0002] Optical fiber communication uses laser as the information carrier and optical fiber as the transmission medium. At present, optical fiber has become the main medium for information broadband transmission. A single-mode fiber with a circular symmetric structure theoretically has two independent and complementary orthogonal polarization modes. Generally speaking, the electric field of light propagating through the fiber can be regarded as a linear superposition of these two special polarization modes. In fact, in single-mode fibers, compensation of the two polarization modes occurs due to imperfections such as symmetric transverse stress or eccentricity of the circular core. The two modes propagate at different phase velocities, so the two modes have different propagation constants. The diff...

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Problems solved by technology

However, rubbing the optical fiber is mainly to increase the wheels and exert a certain force on the optical fiber in the drawing process. During the production process, it is easy to cause the optical fiber to break and affect the production efficiency or the surface is damaged to affect the appearance quality of the optical fiber.

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