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Thick core optical fibre laser welder and welding method

A welder and core fiber technology, applied in lasers, laser parts, phonon exciters, etc., to achieve the effects of precise heating power control, simple structure, and uniform heating

Inactive Publication Date: 2009-01-14
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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Problems solved by technology

[0003] The object of the present invention is to provide a thick-core fiber laser welder and welding method for thick-core fiber welding, so as to solve the welding problem of thick-core fibers with a diameter greater than 400μ, so that the welding points of the fibers are even and clean

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Embodiment Construction

[0021] The present invention will be further described below in conjunction with the embodiments and accompanying drawings, but the scope of the present invention should not be limited thereto.

[0022] see figure 1 with figure 2 As shown, it can be seen from the figure that the thick-core fiber laser welder of the present invention includes a CO 2 Laser 1, where the CO 2 The forward direction of the output beam 2 of the laser 1 is provided with a jujube-shaped biconical lens 3 and a bowl-shaped reflective focusing mirror 5 with a circular hole 51 in the center of the bowl bottom. Two optical fiber clamps 6 clamp two sections of optical fibers 7 to be welded. The support 8 of the fiber clamp 6 is placed on the three-dimensional mobile device 9, and the CO 2 The laser beam 2 output by the laser 1 is irradiated on the bowl-shaped reflective focusing mirror 5 by the said date-shaped biconical lens 3 to shape the annularly distributed laser beam 4, and is focused on the bowl-s...

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Abstract

It is a coarse fiber laser welding device and welding method for coarse fiber welding, using a small 100-watt CO2 laser as light source, and using an oral-shaped lens to form the laser beam of the laser to the ring beam, and bowl-shape mirror respecting this ring laser beam to the focus in the center of the bowl-shape mirror, and the welding fiber is placed on the position of focus. There is a hole in the center of the bowl-shape mirror, and the fiber passing through this hole, making the fiber welding part locating in the center of the bowl-shape mirror focus, and after the ring laser focusing, it can uniform irradiate on the welding position around the fiber. Control power and power output time of CO2 laser, to weld different diameter fibers. The invention solves the welding problem of the coarse fiber, making the fiber welding point uniform and smooth.

Description

technical field [0001] The invention relates to optical fiber welding, in particular to a thick-core optical fiber laser welder and a welding method for welding together thick-core optical fibers with a diameter of more than 400 μ. Background technique [0002] There are two existing technologies for thick-core optical fiber welding: one is traditional electric spark welding, which is very mature for communication optical fiber welding with a diameter of less than 200 μ, but for optical fiber welding with a diameter of more than 400 μ, it is still not available. Not ideal. The other is that the ring-shaped electric heating body applies high temperature to the surface of the optical fiber to be welded for welding. Contents of the invention [0003] The object of the present invention is to provide a thick-core fiber laser welder and welding method for thick-core fiber welding, so as to solve the welding problem of thick-core fibers with a diameter greater than 400μ, so tha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B6/255H01S3/00
Inventor 楼祺洪董景星周军魏运荣
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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