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Manufacturing method of small-size optical fiber coupler

A technology of optical fiber coupler and manufacturing method, which is applied to the coupling of optical waveguides, light guides, optics, etc., can solve the problems of increased additional loss, limited length space of optical fiber couplers, etc., and achieves the effect of shortening the length.

Inactive Publication Date: 2013-09-04
CASIX
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with these two methods, not only the length space that the fiber coupler can reduce is limited, but also the additional loss is greatly increased

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A method of manufacturing a small-sized fiber optic coupler, comprising the following steps:

[0017] (1) Removing the coating layer: the wire stripper removes the coating layer from the area of ​​the optical fiber cable to be coupled, and wipes it clean;

[0018] (2) Corrosion of the cladding: immerse the area of ​​the optical fiber to be coupled in hydrofluoric acid solution, and corrode the cladding of the area to be coupled at a rate of 1 μm / min until the diameter of the cladding reaches the preset size, and then take out the optical fiber and cleaned; the hydrofluoric acid is a hydrofluoric acid solution with a mass fraction of 10%; the said until the diameter of the cladding reaches a predetermined size means that the diameter of the cladding reaches 50 μm.

[0019] (3) Melting taper: Twist the two optical fibers obtained through step (2) close together, so that the areas to be coupled are close to each other, and fixed on the taper fixture, and then heat and melt...

Embodiment 2

[0023] This part differs from Example 1 in that:

[0024] (2) Corrosion cladding: corrode the cladding diameter of the area to be coupled at a rate of 3 microns / min; the hydrofluoric acid is a hydrofluoric acid solution with a mass fraction of 20%; until the cladding diameter reaches the preset size It means that the cladding diameter reaches 75 μm.

Embodiment 3

[0026] This part differs from Example 1 in that:

[0027] (2) Corrosion cladding: corrode the cladding diameter of the area to be coupled at a rate of 5 microns / min; the hydrofluoric acid is a hydrofluoric acid solution with a mass fraction of 30%; until the cladding diameter reaches the preset size It means that the cladding diameter reaches 100 μm.

[0028] The tapered length of the existing optical fiber coupler is generally 10mm-17mm, but the tapered length of the product optical fiber coupler made by the present invention is greatly shortened, only 6-7mm, and the extra loss produced by the present invention is not as good as that of an ordinary optical fiber coupler. Quite, the extra loss is ≤0.15DB.

[0029] The present invention uses the corrosion method to pre-reduce the cladding diameter of the optical fiber line to be coupled, shortens the distance between the fiber cores before stretching, and reduces the required time for extending the mode field of the fiber core...

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PUM

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Abstract

The invention provides a manufacturing method of a small-size optical fiber coupler, and the manufacturing method comprises the steps of coating removal, cladding corrosion, fusion and tapering, primary packaging, secondary packaging and the like. According to the manufacturing method of the small-size optical fiber coupler, the cladding diameter of an area of an optical fiber to be coupled is first reduced by corrosion, so that the distance between optical fiber cores before drawing is shortened, the drawing length which is used for enabling the mold filed of a fiber core to extend to the adjacent optical fiber is reduced, and the overall length of the optical fiber coupler is shortened.

Description

technical field [0001] The invention relates to a processing method of optical communication components, in particular to a manufacturing method of a small-sized optical fiber coupler. Background technique [0002] In the production process of fiber optic couplers, the size of the fiber coupling cone determines the size of the quartz groove used to fix the coupling cone, and also determines the final size of the fiber coupler; and the size of the fiber coupling cone is the fusion taper process The tapered length of the medium fiber, because to couple the light in one fiber into the adjacent fiber, the diameter of the fiber core must be gradually reduced until the mode field of the core can extend into the adjacent fiber. [0003] At present, the tapered length of the conventional optical fiber coupler is generally between 9mm and 17mm. In order to reduce the package size of the coupler, the current practice is usually: one is to use as small a burner as possible, and the oth...

Claims

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Application Information

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IPC IPC(8): G02B6/24G02B6/245G02B6/255
Inventor 陈建林林玲
Owner CASIX
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