Preparation device and method of optical fiber preform rod

Abstract

The invention discloses a preparation apparatus and a method of an optical fiber preform rod. The preparation apparatus comprises a blast burner set composed of two or more than two blast burners, a detector and a controller; wherein the blast burner set is arranged in a reaction chamber, and is used for deposition of particle loose bodies on the rod core of the optical fiber preform rod; the detector is connected with the blast burners of the blast burner set, and is used for detecting flow of the blast burners, and sending detection results; the controller is connected to the detector and the blast burners, and is used for receiving the detection results sent by the detector, and adjusting the flow of each blast burner to be the same based on the detection results; the controller is also connected to the rod core of the optical fiber preform rod and the blast burner set respectively, and is used for adjusting rotating speed of the rod core of the optical fiber preform rod, distance from the blast burner mouth of each blast burner to the center of the rod core of the optical fiber preform rod, distance between each two blast burners, and side-to-side reciprocating motion speed and stroke of the blast burner set. The preparation apparatus is capable of realizing uniform mass distribution of the glass particle loose bodies on the rod core of the optical fiber preform rod, and thereby reducing outer diameter fluctuation of the vitrified optical fiber preform rod in the axial direction.

Description

technical field [0001] The invention relates to the technical field of preparation of optical fiber preform rods, and more specifically, to a device and method for preparing loose particles of optical fiber preform rods. Background technique [0002] At present, with the continuous development of optical fiber communication technology, the requirements for optical fiber performance are getting higher and higher. An optical fiber is formed by drawing an optical fiber preform on a wire drawing machine. If the fluctuation of the outer diameter of the optical fiber preform is smaller, the performance of the optical fiber drawn through the wire drawing machine is better. Therefore, in order to improve the performance of the optical fiber, it is necessary to make the fluctuation of the outer diameter of the prepared optical fiber preform smaller. [0003] The traditional preparation of optical fiber preform mainly adopts the external vapor deposition method. The glass particles a...

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Problems solved by technology

[0004] However, since the blowtorches used for combustion are all handmade, there are certain differences between individuals. During the process of depositing glass particles on the rod core, the density of the glass particles deposited on the rod core will be caused by the difference of each blowtorch. Are not the same

Therefore, although the outer diameter of the optical fiber preform measured by the caliper is the same, due to the different density of the loose glass particles attached to the optical fiber preform, when the optical fiber preform is vitrified in a high temperature furnace, the optical fiber preform The outer diameter of the rod will change and is no longer consistent, which will eventually lead to large fluctuations in the outer diameter of the prepared optical fiber preform

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