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 cou

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0015] Example 1

[0016] A method for manufacturing a small-size optical fiber coupler includes the following steps:

[0017] (1) Removal of coating layer: Stripping pliers will remove the coating layer from the coupling area of ​​the optical fiber and wipe it clean;

[0018] (2) Corrosion of the cladding: immerse the coupling area of ​​the optical fiber in a hydrofluoric acid solution, and make the cladding of the coupling area etch at a rate of 1 micron / min until the diameter of the cladding reaches the preset size, then take out the optical fiber And clean it; the hydrofluoric acid is a hydrofluoric acid solution with a mass fraction of 10%; and the cladding diameter reaches a preset size means that the cladding diameter reaches 50 μm.

[0019] (3) Melting taper: twist the two optical fiber wires obtained in step (2) to make the areas to be coupled close to each other and fix them on the taper fixture, and then use flame to heat and melt the area to be coupled Stretch it to both ...

Example Embodiment

[0022] Example 2

[0023] The difference between this part and Example 1 is:

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

Example Embodiment

[0025] Example 3

[0026] The difference between this part and Example 1 is:

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

[0028] The taper length of the existing optical fiber coupler is generally 10mm-17mm, while the length of the cone 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 similar to that of ordinary optical fiber couplers. Equivalent, additional loss ≤0.15DB.

[0029] The invention uses the corrosion method to reduce the cladding diameter of the fiber to be coupled in advance, shortens the distance between the fiber cores before stretching, and reduces the need for the mode field of the fiber core to extend to adja...

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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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