CN102565925A - Method for preparing microfine optical fiber by adopting chemical corrosion method - Google Patents
Method for preparing microfine optical fiber by adopting chemical corrosion method Download PDFInfo
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- CN102565925A CN102565925A CN201210015000XA CN201210015000A CN102565925A CN 102565925 A CN102565925 A CN 102565925A CN 201210015000X A CN201210015000X A CN 201210015000XA CN 201210015000 A CN201210015000 A CN 201210015000A CN 102565925 A CN102565925 A CN 102565925A
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Abstract
The invention relates to a method for preparing a microfine optical fiber by adopting a chemical corrosion method. The method comprises the following steps of: arranging a device, corroding an outer resin covering layer of an optical fiber to be processed to take the optical fiber subjected to the removal of the resin covering layer, wherein the device comprises an ultrasonic cleaning machine, a container in which a concentrated sulfuric acid solution is placed, a container in which deionized water is placed, and a container in which a hydrofluoric acid solution is placed; soaking the optical fiber subjected to the removal of the resin covering layer in deionized water, cleaning to remove the concentrated sulfuric acid solution resided on the optical fiber and then taking out; placing the container in which the hydrofluoric acid solution is placed in a cleaning groove of the ultrasonic cleaning machine, adding a proper quantity of water in the cleaning groove, immersing the optical fiber subjected to cleaning of the deionized water in a hydrofluoric acid solution, opening a switch of the ultrasonic cleaning machine, corroding the optical fiber in the hydrofluoric acid solution, and taking the optical fiber out, wherein the height of the water level is lower than the top end of the container; and placing the optical fiber corroded by the hydrofluoric acid solution in the deionized water and then taking out. The invention can be widely applied to preparation of micro fine optical fibers.
Description
Technical field
The present invention relates to a kind of method for preparing fine optical fiber, particularly about a kind of method of utilizing chemical corrosion method to prepare fine optical fiber.
Background technology
Fine optical fiber is mainly used in micro-nano manufacture field and optical waveguide transmission field; Existing fine method for preparing optical fiber is main with mechanical stretching method and chemical corrosion method; The mechanical stretching method is utilized the hot melt of optical fiber, uses laser or infrared light a place in the middle of the optical fiber is heated, and applies external force simultaneously at two ends and evenly slowly stretches; Along with the carrying out that stretches; Optical fiber is tapered at the hot spot place until being broken, and can produce the conical fiber probe that is applied to optical microscope for scanning near field, and the needle point radius-of-curvature is in nanometer scale.But the mechanical stretching method can not obtain to have certain-length and the uniform optical fiber of diameter.The fine method for preparing optical fiber that present stage popularize to use the most is a chemical corrosion method, and the chemical corrosion ratio juris is to obtain fine optical fiber after utilizing chemical reaction between hydrofluorite and the silicon dioxide that optical fiber is successively corroded, and concrete reaction formula is: SiO
2(s)+4HF (aq) → SiF
4(g)+2H
2O.
At present; Utilize chemical corrosion method prepare fine optical fiber be still with the preparation optical fiber probe be main; Fiber core is placed hydrofluoric acid solution, will place subsurface optical fiber to corrode fully, utilize the capillary action principle of liquid level; Be implemented in the taper needle point that the preparation of liquid level place has certain taper, do not have the method for certain-length and the uniform fine optical fiber of diameter but still there is preparation at present.
Summary of the invention
To the problems referred to above; The purpose of this invention is to provide a kind of fibre diameter in micron dimension; Optical fiber surface smooth finish is good, fibre diameter is even in the longitudinal direction, and the chemical corrosion method that utilizes of time that can shorten the fine optical fiber of preparation prepares the method for fine optical fiber.
For realizing above-mentioned purpose; The present invention takes following technical scheme: a kind of method of utilizing chemical corrosion method to prepare fine optical fiber; May further comprise the steps: 1) be provided with and one include supersonic wave cleaning machine, be placed with concentrated sulfuric acid solution container, be placed with the container of deionized water and be placed with the device of the fine optical fiber of preparation of the container of hydrofluoric acid solution, said supersonic wave cleaning machine includes rinse bath; 2) the resin surrounding layer to pending optical fiber corrodes; Detailed process is: the container that will be placed with concentrated sulfuric acid solution is statically placed in the rinse bath of said supersonic wave cleaning machine, and with adding an amount of water in the said rinse bath, the height of surface level is lower than the top of said container; Pending optical fiber is immersed in the said concentrated sulfuric acid solution; Open the switch of said supersonic wave cleaning machine, after optical fiber is corroded in said concentrated sulfuric acid solution, the optical fiber behind the removal resin surrounding layer is taken out; 3) optical fiber with said removal resin surrounding layer soaks in deionized water, concentrated sulfuric acid solution residual on the optical fiber is washed the back take out; The container that 4) will fill hydrofluoric acid solution is statically placed in the rinse bath of supersonic wave cleaning machine; With adding an amount of water in the rinse bath; The height of surface level will be lower than the top of container; The optical fiber that will pass through washed with de-ionized water is immersed in the hydrofluoric acid solution, opens the switch of ultrasonic cleaning machine, optical fiber is corroded the back take out in hydrofluoric acid solution; 5) will be positioned over immersion back taking-up in the deionized water through the optical fiber after the said hydrofluoric acid solution corrosion.
Said optical fiber is a kind of in single-mode fiber, the multimode optical fiber.
The etching time of the concentration of the said concentrated sulphuric acid, the concentration of hydrofluoric acid solution, the concentrated sulphuric acid and the etching time of hydrofluorite are confirmed according to the diameter of diameter, preparation length of fiber and the preparation optical fiber of pending length of fiber, pending optical fiber.
The concentration of said concentrated sulfuric acid solution adopts 70%～98%, and the concentration of said hydrofluoric acid solution adopts 20%～60%.
The present invention is owing to take above technical scheme; It has the following advantages: 1, the present invention is owing to be placed on optical fiber in the hydrofluoric acid solution; The container that fills hydrofluoric acid solution is placed in the rinse bath of supersonic wave cleaning machine, and in chemical corrosion, adds ultrasound wave, ultrasound wave makes hydrofluoric acid solution produce mechanical vibration; Therefore can quicken the corrosion of optical fiber, effectively shorten the time of preparation optical fiber.2, the present invention is owing to increased action of ultrasonic waves; Make that hydrofluoric acid solution concentration in operating process is more even; The method for preparing optical fiber with the auxiliary chemical corrosion of existing no ultrasound wave is compared; Optical fiber surface obtains uniform corrosion, has effectively improved surface smoothness and the diameter homogeneity in the longitudinal direction of the optical fiber of preparation, can avoid prepared optical fiber surface the situation generation that there are bubble or hole in injustice or part section inside to occur.The present invention can be widely used in the preparation of fine optical fiber.
Description of drawings
Fig. 1 is the effect synoptic diagram of optical fiber under scanning electron microscope that adopts the present invention's preparation;
Fig. 2 is the effect synoptic diagram that adopts under the optical fiber scanning electron microscope of existing chemical corrosion method preparation.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is carried out detailed description.
The present invention utilizes chemical corrosion method to prepare the method for fine optical fiber, may further comprise the steps:
1) device of the fine optical fiber of preparation of the present invention includes the container that container and that container, that a supersonic wave cleaning machine, is placed with the concentrated sulphuric acid is placed with deionized water is placed with hydrofluoric acid solution.
2) the resin surrounding layer to pending optical fiber corrodes, and detailed process is: the container that will be placed with concentration and be 70%～98% concentrated sulfuric acid solution is statically placed in the rinse bath of supersonic wave cleaning machine, and with adding an amount of water in the rinse bath; The height of surface level will be lower than the top of container; According to actual needs, the optical fiber of intercepting certain-length, employed optical fiber is multimode optical fiber in the present embodiment; Length of fiber is 5.3 millimeters; Fibre diameter is 125 microns, and pending optical fiber is immersed in the concentrated sulfuric acid solution fully, opens the switch of supersonic wave cleaning machine; Optical fiber was corroded in concentrated sulfuric acid solution about 20 minutes, the optical fiber behind the removal resin surrounding layer is taken out.
2) optical fiber that will remove the resin surrounding layer is immersed in the deionized water container about 30 seconds, takes out after thoroughly washing the concentrated sulfuric acid solution that possibly remain on the optical fiber.
3) will fill concentration is that the container of 20%～60% hydrofluoric acid solution is statically placed in the rinse bath of supersonic wave cleaning machine; And with adding an amount of water in the rinse bath; The height of surface level will be lower than the top of container, and the optical fiber that will pass through washed with de-ionized water is immersed in the hydrofluoric acid solution fully, opens the switch of ultrasonic cleaning machine; With optical fiber in hydrofluoric acid solution, corrode be approximately 45 minutes after, optical fiber is taken out.
4) in order thoroughly to wash the hydrofluoric acid solution that possibly remain on the optical fiber, will be positioned over immersion taking-up after about 30 seconds in the deionized water through the optical fiber after the hydrofluoric acid solution corrosion, and with the optical fiber aeration-drying of taking out, be about 10 minutes drying time.
In the foregoing description, pending optical fiber can also be single-mode fiber.
Among above-mentioned each embodiment; Different according to the fiber lengths of selected length of fiber to be corroded, the diameter of optical fiber, required preparation and diameter; Treating concentration and these two corrosion parameters of etching time of the hydrofluoric acid solution of corrosion chooses; Step 2)～4) also can adopt scanning electron microscope that the result of corroding is observed, etching time controlled according to the result who observes.
Among above-mentioned each embodiment, optical fiber gripping easily in corrosion process for ease can be fixed on an end of optical fiber on one clamp device.
Like Fig. 1, shown in Figure 2; Adopting the present invention to prepare length is 5.3 millimeters optical fiber; After preparation is accomplished on 5.3 mm length directions the homogeneity of fibre diameter fine, 3 microns of fibre diameter average out to, optical fiber surface smooth finish good (as shown in Figure 1); Do not adopt the air spots of the optical fiber that the present invention prepares and the situation that there is bubble or hole in part section inside to take place, and optical fiber diameter inhomogeneous (as shown in Figure 2) in the longitudinal direction.
Above-mentioned each embodiment only is used to explain the present invention, and wherein the step of implementation method all can change to some extent, and every equivalents of on the basis of technical scheme of the present invention, carrying out and improvement all should not got rid of outside protection scope of the present invention.
Claims (4)
1. method of utilizing chemical corrosion method to prepare fine optical fiber may further comprise the steps:
1) be provided with the container that one includes supersonic wave cleaning machine, be placed with concentrated sulfuric acid solution, be placed with the container of deionized water and be placed with the device of the fine optical fiber of preparation of the container of hydrofluoric acid solution, said supersonic wave cleaning machine includes rinse bath;
2) the resin surrounding layer to pending optical fiber corrodes; Detailed process is: the container that will be placed with concentrated sulfuric acid solution is statically placed in the rinse bath of said supersonic wave cleaning machine, and with adding an amount of water in the said rinse bath, the height of surface level is lower than the top of said container; Pending optical fiber is immersed in the said concentrated sulfuric acid solution; Open the switch of said supersonic wave cleaning machine, after optical fiber is corroded in said concentrated sulfuric acid solution, the optical fiber behind the removal resin surrounding layer is taken out;
3) optical fiber with said removal resin surrounding layer soaks in deionized water, concentrated sulfuric acid solution residual on the optical fiber is washed the back take out;
The container that 4) will fill hydrofluoric acid solution is statically placed in the rinse bath of supersonic wave cleaning machine; With adding an amount of water in the rinse bath; The height of surface level will be lower than the top of container; The optical fiber that will pass through washed with de-ionized water is immersed in the hydrofluoric acid solution, opens the switch of ultrasonic cleaning machine, optical fiber is corroded the back take out in hydrofluoric acid solution;
5) will be positioned over immersion back taking-up in the deionized water through the optical fiber after the said hydrofluoric acid solution corrosion.
2. a kind of method of utilizing chemical corrosion method to prepare fine optical fiber as claimed in claim 1 is characterized in that: said optical fiber is a kind of in single-mode fiber, the multimode optical fiber.
3. according to claim 1 or claim 2 a kind of method of utilizing chemical corrosion method to prepare fine optical fiber, it is characterized in that: the etching time of the concentration of the said concentrated sulphuric acid, the concentration of hydrofluoric acid solution, the concentrated sulphuric acid and the etching time of hydrofluorite are confirmed according to the diameter of diameter, preparation length of fiber and the preparation optical fiber of pending length of fiber, pending optical fiber.
4. a kind of method of utilizing chemical corrosion method to prepare fine optical fiber as claimed in claim 3 is characterized in that: the concentration of said concentrated sulfuric acid solution adopts 70%～98%, and the concentration of said hydrofluoric acid solution adopts 20%～60%.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103553367A (en) * | 2013-10-08 | 2014-02-05 | 武汉锐科光纤激光器技术有限责任公司 | Method for post-treatment preparation of smooth corroded optical fiber surface |
| CN109455955A (en) * | 2018-10-23 | 2019-03-12 | 华侨大学 | A kind of U-shaped fibre-optical probe preparation method |
| CN111153609A (en) * | 2019-07-10 | 2020-05-15 | 深圳瑞焱通光子技术有限公司 | Optical fiber corrosion device |
| WO2020233279A1 (en) * | 2019-05-21 | 2020-11-26 | 南京同溧晶体材料研究院有限公司 | Method for processing single crystal optical fiber with uniform diameter |
| CN113311110A (en) * | 2021-05-18 | 2021-08-27 | 北极光电(深圳)有限公司 | Optical fiber chemical corrosion method |
| CN113998904A (en) * | 2021-10-18 | 2022-02-01 | 北京交通大学 | H-shaped optical fiber manufacturing device based on hydrofluoric acid corrosion technology |
| CN114624816A (en) * | 2022-01-26 | 2022-06-14 | 中国船舶重工集团公司第七0七研究所 | Processing method for preparing smooth end face of microstructure optical fiber |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108020248A (en) * | 2017-11-28 | 2018-05-11 | 北京信息科技大学 | The method that large mode field fibre-optical F-P sensor is prepared based on chemical corrosion method |
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| JP2004037430A (en) * | 2002-06-28 | 2004-02-05 | Ihara Riken:Kk | Ion concentration measuring ion sensor, its manufacturing method, and ion concentration measuring device using the same |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103553367A (en) * | 2013-10-08 | 2014-02-05 | 武汉锐科光纤激光器技术有限责任公司 | Method for post-treatment preparation of smooth corroded optical fiber surface |
| CN109455955A (en) * | 2018-10-23 | 2019-03-12 | 华侨大学 | A kind of U-shaped fibre-optical probe preparation method |
| WO2020233279A1 (en) * | 2019-05-21 | 2020-11-26 | 南京同溧晶体材料研究院有限公司 | Method for processing single crystal optical fiber with uniform diameter |
| CN111153609A (en) * | 2019-07-10 | 2020-05-15 | 深圳瑞焱通光子技术有限公司 | Optical fiber corrosion device |
| CN113311110A (en) * | 2021-05-18 | 2021-08-27 | 北极光电(深圳)有限公司 | Optical fiber chemical corrosion method |
| CN113998904A (en) * | 2021-10-18 | 2022-02-01 | 北京交通大学 | H-shaped optical fiber manufacturing device based on hydrofluoric acid corrosion technology |
| CN114624816A (en) * | 2022-01-26 | 2022-06-14 | 中国船舶重工集团公司第七0七研究所 | Processing method for preparing smooth end face of microstructure optical fiber |
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| CN102565925B (en) | 2013-07-31 |
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