CN113998904A - H-shaped optical fiber manufacturing device based on hydrofluoric acid corrosion technology - Google Patents
H-shaped optical fiber manufacturing device based on hydrofluoric acid corrosion technology Download PDFInfo
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Abstract
The invention relates to an optical fiber manufacturing device, in particular to an I-shaped optical fiber manufacturing device based on a hydrofluoric acid corrosion technology. The I-shaped optical fiber manufacturing device fixes an optical fiber on an optical fiber pressing block by utilizing a rubber sleeve, then the pressing block is placed in a liquid tank, and hydrofluoric acid and deionized water are injected into the liquid tank to respectively realize the functions of corroding the optical fiber and cleaning the optical fiber. The manufacturing device of the I-shaped optical fiber is based on a hydrofluoric acid corrosion technology, can effectively control the parallelism and the processing depth of two surfaces of the I-shaped optical fiber, and is suitable for traditional single-mode optical fibers and special optical fibers, and the fiber core types of the optical fibers include but are not limited to round fiber core optical fibers and square fiber core optical fibers. The device is easy to manufacture, the surface of the processed I-shaped optical fiber is good in symmetry, the precision is high, and the controllability of the processing size is extremely high.
Description
Technical Field
The invention belongs to the field of microstructure optical fiber manufacturing, in particular to the field of manufacturing of micro-fiber devices and mixed structure optical fiber devices in photon integration and optical fiber communication systems.
Background
The optical fiber communication technology is a research field emphasized by the national medium and long term development planning outline, and the traditional optical fiber and the derivative structure thereof play an important role in the field of optical integration by the advantages of ultra-large communication capacity, low loss, low cost and the like, and become an important pillar for the development of the information industry in the 21 st century. In the traditional optical fiber, an optical field is strictly limited in a fiber core for transmission, and since an external signal cannot interfere with a signal transmitted in the optical fiber and the signal transmitted in the optical fiber can hardly radiate out of the optical fiber, the electromagnetic compatibility and the noise resistance of the optical fiber are excellent.
The continuous development of the modern optical fiber communication technology widely depends on various novel optical fiber devices, such as a modulator, a photoelectric detector, an ultrafast laser and the like based on an optical fiber platform, the devices destroy the transmission stability of the traditional optical fiber to a certain extent, and the functionalization of a composite structure of a modified material and the optical fiber is realized through evanescent wave coupling. In such devices, the most common two optical fiber platforms are a tapered micro-nano optical fiber and a D-type optical fiber, and there are various manufacturing schemes for the two optical fiber platforms, such as a fused biconical taper method, a chemical etching method, a laser etching method, a flat side polishing method, a suspension side polishing method, and the like. With the continuous pursuit of high coupling coefficient and high sensitivity of various optical fiber composite devices, the two optical fiber platforms of the existing conical micro-nano optical fiber and D-type optical fiber can not meet the composite requirements of novel functional materials, so that the preparation of a new optical fiber element platform capable of leaking stronger evanescent waves is of great importance to the development of the field of future optical communication.
The I-shaped optical fiber is characterized in that a part of cladding layers on two sides of a cylindrical structure of the optical fiber are removed, and the two sides of the removed cladding layers meet the parallel condition as much as possible, so that the section of the optical fiber forms a Chinese character I. Therefore, optical signals transmitted in the I-shaped optical fiber platform are symmetrically leaked out from two sides of the optical fiber in an evanescent wave mode, and compared with a D-shaped optical fiber platform, the I-shaped optical fiber platform can have a higher coupling coefficient with a functional material; compared with a cylindrical structure of a conical micro-nano optical fiber platform, the I-shaped optical fiber has two complete planes, and great convenience is provided for compounding a functional material and the optical fiber platform. In the manufacturing scheme of the traditional optical fiber platform, the fusion tapering method can only obtain an optical fiber sample with a cylindrical surface, and a flat surface cannot be processed on the optical fiber; the interference of gravity factors cannot be eliminated by the laser etching method, when a planar structure is manufactured on the optical fiber, the plane edge is asymmetric, and the possibility that the I-shaped surface is manufactured on the optical fiber by the laser etching method is almost zero; a flat-type side-throwing grinding method and a suspension type side-throwing grinding method generate a plurality of microcracks when a plane is processed on an optical fiber, a common D-shaped optical fiber is formed by processing one plane, the service life of the optical fiber can be prolonged after the optical fiber is soaked and polished by liquid medicine, the optical fiber is prevented from being broken, and the grinding processing on the D-shaped optical fiber is not practical under the condition that the microcracks can not be completely eliminated. Compared with the prior art, the chemical etching method has unique advantages in the manufacturing aspect of the I-shaped optical fiber, and the method can be used for processing a plane on the optical fiber and avoiding the interference of gravity factors and microcracks on an optical fiber sample.
In conclusion, the efficient combination of the functional material and the novel optical fiber platform has important scientific significance and practical value for the further development of the modern optical fiber communication system. Although the prior art can realize the manufacture of the traditional optical fiber platform, the manufacture requirement of the I-shaped optical fiber platform cannot be met. The patent provides a manufacturing method of an I-shaped optical fiber platform, the process is based on a hydrofluoric acid corrosion technology and is suitable for traditional single-mode optical fibers and special optical fibers, and the fiber core types of the optical fibers include but are not limited to round fiber core optical fibers and square fiber core optical fibers. The device is easy to manufacture, the surface of the processed I-shaped optical fiber is good in symmetry, the precision is high, and the controllability of the processing size is extremely high.
Disclosure of Invention
The invention makes up the blank of the I-shaped optical fiber platform in the manufacturing process. Through reasonable scheme design, the invention provides the I-shaped optical fiber manufacturing device which can effectively control the parallelism and the processing depth of two surfaces of the I-shaped optical fiber, and the manufacturing process is compatible with the traditional single-mode optical fiber and the special optical fiber.
The basic principle of the invention is as follows: hydrofluoric acid is an aqueous solution of hydrogen fluoride gas, is corrosive, and can strongly corrode metals including gold and silver, common glass, and various silicon-containing objects. The cladding of the traditional single-mode optical fiber and the special optical fiber mainly comprises silicon dioxide and can be severely corroded by hydrofluoric acid, so that the surface appearance of the optical fiber can be deeply processed by reasonably utilizing the hydrofluoric acid. The invention provides an H-shaped optical fiber manufacturing device based on a hydrofluoric acid corrosion technology. The liquid groove is fixed in the middle of the objective table, the parts of the objective table on the two sides of the liquid groove are processed to form moving tracks, the four sliding blocks can freely slide in the limited range of the moving tracks, the partial sliding blocks are connected through springs, and the optical fiber clamp is placed on the sliding blocks to fix the optical fiber.
The I-shaped optical fiber manufacturing device fixes an optical fiber on an optical fiber pressing block by utilizing a rubber sleeve, then the pressing block is placed in a liquid tank, and hydrofluoric acid and deionized water are injected into the liquid tank to respectively realize the functions of corroding the optical fiber and cleaning the optical fiber, so that the corrosion processing of one side surface of the optical fiber is completed. The rubber sleeve is provided with a buckle on one side, the annular rubber sleeve can be changed into a belt shape after the buckle is unfastened, after one side surface of the optical fiber is processed, the rubber sleeve on the current optical fiber pressing block is changed into a strip shape by using a calibration clamp and transferred onto another optical fiber pressing block, the previous corrosion processing flow is repeated, the corrosion processing on the other side surface of the I-shaped optical fiber is realized, and the I-shaped optical fiber with two almost strictly parallel side surfaces is obtained. The optical fiber fixture is arranged on the sliding blocks to fix the optical fiber, and the optical fiber fixture is operated according to the fixing sequence, so that the optical fiber can be stretched to be straight by utilizing the elastic potential energy of the spring and the moving capacity of the sliding blocks, and the repeatability and the manufacturing precision of the manufacturing process of the I-shaped optical fiber are improved.
The invention has the following concrete physical implementation modes: in the H-shaped optical fiber manufacturing device based on the hydrofluoric acid corrosion technology, moving tracks are processed on an objective table and distributed on two sides of a liquid tank, a sliding block can freely slide in a limited range of the moving tracks, a clamp for fixing an optical fiber is placed on the sliding block, and part of the sliding blocks are connected through springs. Removing a coating layer from an area to be processed of the optical fiber, burying the optical fiber in lead powder for a period of time, taking out the optical fiber, wrapping the lead powder, placing the optical fiber at the approximate position of the middle part of an optical fiber pressing block, adding a customized rubber sleeve on two sides of the optical fiber pressing block, extruding the optical fiber in the direction of the optical fiber, confirming that the rubber sleeve is extruded to the exact position by using a proofreading clamp, firmly fixing the optical fiber in a gap of the rubber sleeve at the moment, and finally dipping anhydrous ethanol by using a soft brush to remove the lead powder exposed in the air on the surface of the current optical fiber. Placing the optical fiber pressing block with the fixed optical fiber face downwards in a liquid tank, then extruding two sliders closest to the liquid tank towards the liquid tank to enable the distances between the two sliders and the edge of the liquid tank to be approximately the same, fixing the tail fiber part of the optical fiber to be processed by using an optical fiber clamp, and loosening the sliders to enable the optical fiber outside the liquid tank to stretch straight naturally by using the elastic potential energy of a spring; and then, the rest two sliding blocks extrude towards the liquid tank, the rest tail fiber is fixed by using an optical fiber clamp, and the rest part of the optical fiber tail fiber is stretched and straightened naturally by using the elastic potential energy of the spring. And (3) injecting hydrofluoric acid into the liquid tank, enabling the surface of the hydrofluoric acid to be higher than the bottom surface of the pressing block, and finishing the corrosion processing on one side surface of the optical fiber after waiting for a period of time.
After the etching processing of one side surface of the optical fiber is finished, pumping hydrofluoric acid in the liquid tank by using an injector, then injecting deionized water, cleaning the residual hydrofluoric acid on the surface of the etched optical fiber, standing the sample for 5 minutes after injecting the deionized water, then pumping out the waste deionized water and injecting new deionized water. And after the processes of changing water and standing the sample are repeated for a plurality of times, pumping out the residual waste liquid in the liquid tank, and naturally drying the corroded and processed side surface of the optical fiber. And opening two optical fiber clamps at two sides of the liquid tank, wherein the optical fiber clamps are closest to each other, releasing the stress borne by the optical fiber tail fiber near the optical fiber pressing block, taking out the optical fiber pressing block currently wrapping the rubber sleeve, putting the pressing block into the calibration clamp, putting a new optical fiber pressing block into the calibration clamp, putting the new optical fiber pressing block under the optical fiber pressing block wrapping the rubber sleeve, and tightly attaching the new optical fiber pressing block to the rubber sleeve. And releasing the buckle on the rubber sleeve to enable the annular rubber sleeve to become a belt shape and naturally droop, and well buckling the rubber sleeve on the new optical fiber pressing block below to complete the transfer of the rubber sleeve to the new optical fiber pressing block.
And opening the rest optical fiber clamp, taking out the whole optical fiber sample, enabling the surface of the fixed optical fiber on the new optical fiber pressing block to face downwards, and dipping the fixed optical fiber on the new optical fiber pressing block with a soft brush to remove the lead powder exposed in the air of the current optical fiber. Placing a new optical fiber pressing block in a liquid tank, then extruding two sliding blocks closest to the liquid tank towards the liquid tank to ensure that the distances between the two sliding blocks and the edge of the liquid tank are approximately the same, fixing the tail fiber part of the optical fiber to be processed by using an optical fiber clamp, and loosening the sliding blocks to naturally stretch the optical fiber outside the liquid tank to be straight by using the elastic potential energy of a spring; the rest two sliding blocks extrude towards the liquid tank direction, the rest tail fiber is fixed by the optical fiber clamp, and the rest part of the optical fiber tail fiber is stretched and straightened naturally by the elastic potential energy of the spring. And (3) injecting hydrofluoric acid into the liquid tank, enabling the surface of the hydrofluoric acid to be higher than the bottom surface of the pressing block, and finishing the corrosion processing on the second side surface of the optical fiber after waiting for a period of time. And after the etching processing is finished, pumping hydrofluoric acid in the liquid tank by using an injector, then injecting deionized water, cleaning the residual hydrofluoric acid on the surface of the etched optical fiber, standing the sample for 5 minutes after injecting the deionized water, and then pumping out the waste deionized water and injecting new deionized water. And after the processes of changing water and standing the sample are repeated for a plurality of times, pumping out the residual waste liquid in the liquid tank, and naturally drying the corroded and processed side surface of the current optical fiber. And opening two optical fiber clamps at two sides of the liquid tank, which are closest to each other, releasing the stress borne by the optical fiber pigtail near the optical fiber pressing block, opening the rest optical fiber clamps, taking out the optical fiber pressing block, opening the buckle of the rubber sleeve, and taking out the optical fiber sample to obtain the I-shaped optical fibers with two sides almost strictly parallel.
The invention has the beneficial effects that: the I-shaped optical fiber manufacturing device based on the hydrofluoric acid corrosion technology is provided, great convenience is provided for widening the application field of various novel optical fiber devices and realizing the compounding of functional materials and optical fiber platforms, the blank of the I-shaped optical fiber platform in the manufacturing process is made up, and the device has important value for designing and manufacturing various composite devices based on the I-shaped optical fiber platform. The main advantages are as follows:
(1) compared with the traditional optical fiber platform processing device, the I-shaped optical fiber manufacturing device based on the hydrofluoric acid corrosion technology uses hydrofluoric acid to carry out corrosion processing on the surface of the optical fiber, thereby avoiding the influence of gravity factors and microcracks on an optical fiber sample;
(2) the H-shaped optical fiber manufacturing device based on the hydrofluoric acid corrosion technology ensures the smoothness and symmetry of the H-shaped surface of the optical fiber and improves the repeatability of processing of the H-shaped optical fiber;
(3) the H-shaped optical fiber manufacturing device based on the hydrofluoric acid corrosion technology has extremely high controllability on the processing size, and the processing depth of the H-shaped surface on the optical fiber can be strictly controlled by controlling the corrosion time;
(4) the manufacturing device of the I-shaped optical fiber based on the hydrofluoric acid corrosion technology is suitable for the traditional single-mode optical fiber and the special optical fiber, and the fiber core types of the optical fiber comprise but are not limited to a round fiber core optical fiber and a square fiber core optical fiber, and the manufacturing device has universal applicability to various optical fibers mainly containing silicon elements;
(5) the I-shaped optical fiber processed by the I-shaped optical fiber manufacturing device based on the hydrofluoric acid corrosion technology has long storage life, and the tolerance of the I-shaped optical fiber platform to environmental instability is greatly enhanced;
(6) if the I-shaped optical fiber manufacturing device based on the hydrofluoric acid corrosion technology only carries out corrosion processing on one side surface of the optical fiber, the traditional D-shaped optical fiber can be obtained, and the flatness and the processing depth of the D-shaped surface can be strictly ensured.
Drawings
FIG. 1 is a schematic perspective view of an apparatus for manufacturing an I-shaped optical fiber based on hydrofluoric acid etching;
FIG. 2 is a schematic diagram of a top view of a liquid tank and dimensional markings;
FIG. 3 is a perspective view of the calibration jig and a dimension mark;
FIG. 4 is a top view and a dimension marking schematic view of an optical fiber pressing block wrapped with a rubber sleeve;
FIG. 5 is a front view and a schematic illustration of a size of an optical fiber pressing block wrapped with a rubber sleeve;
FIG. 6 is an operational view of the rubber boot before it is transferred to a new optical fiber compact;
FIG. 7 is a schematic diagram of the operation of the rubber sleeve after transfer to a new optical fiber compact;
FIG. 8 is a cross-sectional view and dimensional labels of a round core I-fiber;
FIG. 9 is a cross-sectional view and dimensional schematic of a standard machined square core I-fiber;
FIG. 10 is a cross-sectional view and dimensional schematic of a diagonally processed square core I-fiber;
Detailed Description
The first embodiment is as follows:
an apparatus for manufacturing an i-shaped optical fiber based on hydrofluoric acid etching is shown in fig. 1. Objective table 1, liquid tank 2, moving track 3, slider 4, slider 5, slider 6, slider 7, spring 8, spring 9, spring 10, spring 11, fiber clamp 12, fiber clamp 13, fiber clamp 14, fiber clamp 15, fiber 16, fiber press 17, and rubber sleeve 18.
The collation jig 19 is shown in fig. 3. The optical fiber pressing block 17, the rubber sleeve 18, the calibration clamp 19 and the new optical fiber pressing block 21 function in the mode shown in fig. 4, 5, 6 and 7, and a buckle 20 is arranged on one side of the rubber sleeve 18. The cross-section of the round-core I-shaped fiber structure is shown in FIG. 8 and includes a core 22 and a cladding 23.
The specific combination mode is as follows: a liquid groove 2 is fixed in the middle of an object stage 1, and moving tracks 3 are formed on parts of the object stage 1 on two sides of the liquid groove 2; the sliding block 4, the sliding block 5, the sliding block 6 and the sliding block 7 can freely slide in the limited range of the moving track 3, the sliding block 4 and the sliding block 5 are connected through a spring 8, and the sliding block 6 and the sliding block 7 are connected through a spring 9; the slide block 5 is connected with the left edge of the liquid groove 2 by a spring 10, and the slide block 6 is connected with the right edge of the liquid groove 2 by a spring 11; the optical fiber clamp 12, the optical fiber clamp 13, the optical fiber clamp 14 and the optical fiber clamp 15 are respectively arranged on the slide block 4, the slide block 5, the slide block 6 and the slide block 7.
The optical fiber 16 in this embodiment is a round core fiber. Removing a coating layer from a region to be processed of the optical fiber 16, embedding the optical fiber 16 in lead powder for a period of time, taking out the optical fiber 16 coated with the lead powder, placing the optical fiber 16 at the approximate position of the middle part of an optical fiber pressing block 17, adding customized rubber sleeves 18 on two sides of the optical fiber pressing block 17, extruding the optical fiber 16, confirming that the rubber sleeves 18 are extruded to the exact position by using a calibration clamp 19, firmly fixing the optical fiber 16 in a gap of the rubber sleeves 18 at the moment, and finally dipping absolute ethyl alcohol by using a soft pen brush to remove the lead powder exposed in the air on the surface of the optical fiber at present. Placing the optical fiber 16 fixed by the optical fiber pressing block 17 in the liquid tank 2 with one side facing downwards, then extruding the sliding block 5 and the sliding block 6 towards the liquid tank 2 to ensure that the distance between the sliding block 5 and the sliding block 6 and the edge of the liquid tank 2 is approximately the same, fixing the tail fiber part of the optical fiber 16 to be processed by using the optical fiber clamp 13 and the optical fiber clamp 14, and loosening the sliding block 5 and the sliding block 6 to naturally stretch the optical fiber 16 outside the liquid tank 2 to be straight; the slider 4 and the slider 7 are pressed towards the liquid tank 2 and the remaining optical fiber 16 is fixed by the optical fiber clamp 12 and the optical fiber clamp 15, so that the remaining part of the tail fiber of the optical fiber 16 is naturally stretched and straightened. And (3) injecting hydrofluoric acid into the liquid tank 2, enabling the surface of the hydrofluoric acid to be higher than the bottom surface of the optical fiber pressing block 2, and finishing the corrosion processing on one side surface of the optical fiber 16 after waiting for 15 minutes.
After the etching processing of one side surface of the optical fiber 16 is finished, the hydrofluoric acid in the liquid tank 2 is pumped by an injector, then deionized water is injected, the residual hydrofluoric acid on the surface of the etched optical fiber 16 is cleaned, a sample is placed for 5 minutes after the deionized water is injected, and then the waste deionized water is pumped out and new deionized water is injected. After the process of changing the water and standing the sample is repeated 6 times, the remaining waste liquid in the liquid tank 2 is extracted to allow the side of the optical fiber 16 to be etched and processed to be naturally air-dried. Opening the optical fiber clamp 13 and the optical fiber clamp 14, releasing the stress borne by the tail fiber of the optical fiber 16 near the optical fiber press block 17, picking up the optical fiber press block 17 currently wrapping the rubber sleeve 18 and placing the press block 17 into the calibration clamp 19, placing the new optical fiber press block 21 into the calibration clamp 19 and under the optical fiber press block 17 wrapping the rubber sleeve 18, unfastening the buckle 20 on the rubber sleeve 18 to enable the annular rubber sleeve 18 to become a belt shape and naturally droop, and fastening the buckle 20 of the rubber sleeve 18 on the new optical fiber press block 21 again to finish the transfer of the rubber sleeve 18 to the new optical fiber press block 21. The transfer process of the rubber boot 18 is illustrated with reference to fig. 6 and 7.
The optical fiber clamp 12 and the optical fiber clamp 15 are opened, the whole sample containing the optical fiber 16, the rubber sleeve 18 and the new optical fiber pressing block 21 is taken out, the surface of the new optical fiber pressing block 21 on which the optical fiber 16 is fixed faces downwards, and the soft pen brush is used for dipping the absolute ethyl alcohol to remove the lead powder exposed in the air of the optical fiber 16. Putting a new optical fiber pressing block 21 into the liquid tank 2, extruding the sliding block 5 and the sliding block 6 towards the liquid tank 2 to ensure that the distance between the sliding block 5 and the sliding block 6 is approximately the same as that between the edge of the liquid tank 2, fixing the tail fiber part of the optical fiber 16 to be processed by using the optical fiber clamp 13 and the optical fiber clamp 14, and loosening the sliding block 5 and the sliding block 6 to naturally stretch the optical fiber 16 outside the liquid tank 2 to be straight; the slider 4 and the slider 7 are pressed towards the liquid tank 2 and the remaining optical fiber 16 is fixed by the optical fiber clamp 12 and the optical fiber clamp 15, so that the remaining part of the tail fiber of the optical fiber 16 is naturally stretched and straightened. And (3) injecting hydrofluoric acid into the liquid tank 2, enabling the surface of the hydrofluoric acid to be higher than the bottom surface of the optical fiber pressing block 2, and finishing the corrosion processing on the second side surface of the optical fiber 16 after waiting for 15 minutes.
After the etching process is completed, the hydrofluoric acid in the liquid tank is drained by using an injector, then deionized water is injected, the residual hydrofluoric acid on the surface of the etched optical fiber 16 is cleaned, a sample is placed for 5 minutes after the deionized water is injected, and then deionized water waste liquid is pumped out and new deionized water is injected. After the process of changing water and standing the sample is repeated for 6 times, the residual waste liquid in the liquid tank 2 is pumped out, and the side surface of the current optical fiber 16 which is corroded is naturally dried. And opening the optical fiber clamp 13 and the optical fiber clamp 14, releasing the stress borne by the tail optical fiber 16 of the optical fiber near the new optical fiber press block 21, opening the optical fiber clamp 12 and the optical fiber clamp 15, taking out the new optical fiber press block 21, opening the buckle 20 of the rubber sleeve 18, taking out the optical fiber 16 sample, and obtaining the I-shaped optical fiber with two side surfaces almost strictly parallel.
Referring to fig. 2, the outer edge length W of the liquid tank 21Is 12cm, and has an inner edge length W2Has a length of 8cm, and an outer edge width H of the liquid tank 2110cm, inner edge width H2Is 6 cm.
Referring to fig. 3, the calibration jig 19 has an outer edge length W39cm, and a hollow part length W45cm, outer edge height H3Is 16 cm.
Referring to fig. 4 and 5, the length W of the optical fiber compact 176Is 6cm, width D1Is 5cm, height H4Is 4 cm; width D of rubber sleeve 182Is 2.4875X 104Mu m; the length W of the optical fiber pressing block 17 after wrapping the rubber sleeve 185Is 6.5cm, height H5Is 4.5 cm.
Referring to fig. 8, in the processed i-shaped optical fiber, the distance D between the i-shaped surface and the round core3Was 42.5 μm.
Example two:
an apparatus for manufacturing an i-shaped optical fiber based on hydrofluoric acid etching is shown in fig. 1. Objective table 1, liquid tank 2, moving track 3, slider 4, slider 5, slider 6, slider 7, spring 8, spring 9, spring 10, spring 11, fiber clamp 12, fiber clamp 13, fiber clamp 14, fiber clamp 15, fiber 16, fiber press 17, and rubber sleeve 18.
The collation jig 19 is shown in fig. 3. The optical fiber pressing block 17, the rubber sleeve 18, the calibration clamp 19 and the new optical fiber pressing block 21 function in the mode shown in fig. 4, 5, 6 and 7, and a buckle 20 is arranged on one side of the rubber sleeve 18. The cross-section of a standard machined square core I-fiber structure is shown in FIG. 9 and includes a core 22 and a cladding 23.
The specific combination mode is as follows: a liquid groove 2 is fixed in the middle of an object stage 1, and moving tracks 3 are formed on parts of the object stage 1 on two sides of the liquid groove 2; the sliding block 4, the sliding block 5, the sliding block 6 and the sliding block 7 can freely slide in the limited range of the moving track 3, the sliding block 4 and the sliding block 5 are connected through a spring 8, and the sliding block 6 and the sliding block 7 are connected through a spring 9; the slide block 5 is connected with the left edge of the liquid groove 2 by a spring 10, and the slide block 6 is connected with the right edge of the liquid groove 2 by a spring 11; the optical fiber clamp 12, the optical fiber clamp 13, the optical fiber clamp 14 and the optical fiber clamp 15 are respectively arranged on the slide block 4, the slide block 5, the slide block 6 and the slide block 7.
The optical fiber 16 in this embodiment is a square core fiber. Removing a coating layer from an area to be processed of the optical fiber 16, embedding the optical fiber 16 in lead powder for a period of time, taking out the optical fiber 16 coated with the lead powder, placing the optical fiber 16 at the approximate position of the middle part of an optical fiber pressing block 17, enabling a square fiber core plane to be parallel to the bottom surface of the optical fiber pressing block 17, adding customized rubber sleeves 18 on two sides of the optical fiber pressing block 17, extruding the rubber sleeves 18 towards the optical fiber 16, confirming that the rubber sleeves 18 are extruded to the exact position by using a calibration clamp 19, firmly fixing the optical fiber 16 in a gap of the rubber sleeves 18 at the moment, and finally dipping anhydrous ethanol by using a soft pen brush to remove the lead powder exposed in the air on the surface of the optical fiber at present. Placing the optical fiber 16 fixed by the optical fiber pressing block 17 in the liquid tank 2 with one side facing downwards, then extruding the sliding block 5 and the sliding block 6 towards the liquid tank 2 to ensure that the distance between the sliding block 5 and the sliding block 6 and the edge of the liquid tank 2 is approximately the same, fixing the tail fiber part of the optical fiber 16 to be processed by using the optical fiber clamp 13 and the optical fiber clamp 14, and loosening the sliding block 5 and the sliding block 6 to naturally stretch the optical fiber 16 outside the liquid tank 2 to be straight; the slider 4 and the slider 7 are pressed towards the liquid tank 2 and the remaining optical fiber 16 is fixed by the optical fiber clamp 12 and the optical fiber clamp 15, so that the remaining part of the tail fiber of the optical fiber 16 is naturally stretched and straightened. And (3) injecting hydrofluoric acid into the liquid tank 2, enabling the surface of the hydrofluoric acid to be higher than the bottom surface of the optical fiber pressing block 2, and finishing the corrosion processing on one side surface of the optical fiber 16 after waiting for 22 minutes.
After the etching processing of one side surface of the optical fiber 16 is finished, the hydrofluoric acid in the liquid tank 2 is pumped by an injector, then deionized water is injected, the residual hydrofluoric acid on the surface of the etched optical fiber 16 is cleaned, a sample is placed for 5 minutes after the deionized water is injected, and then the waste deionized water is pumped out and new deionized water is injected. After the process of changing the water and standing the sample is repeated 8 times, the remaining waste liquid in the liquid tank 2 is extracted to allow the side of the optical fiber 16 to be corroded to be naturally air-dried. Opening the optical fiber clamp 13 and the optical fiber clamp 14, releasing the stress borne by the tail fiber of the optical fiber 16 near the optical fiber press block 17, picking up the optical fiber press block 17 currently wrapping the rubber sleeve 18 and placing the press block 17 into the calibration clamp 19, placing the new optical fiber press block 21 into the calibration clamp 19 and under the optical fiber press block 17 wrapping the rubber sleeve 18, unfastening the buckle 20 on the rubber sleeve 18 to enable the annular rubber sleeve 18 to become a belt shape and naturally droop, and fastening the buckle 20 of the rubber sleeve 18 on the new optical fiber press block 21 again to finish the transfer of the rubber sleeve 18 to the new optical fiber press block 21. The transfer process of the rubber boot 18 is illustrated with reference to fig. 6 and 7.
The optical fiber clamp 12 and the optical fiber clamp 15 are opened, the whole sample containing the optical fiber 16, the rubber sleeve 18 and the new optical fiber pressing block 21 is taken out, the surface of the new optical fiber pressing block 21 on which the optical fiber 16 is fixed faces downwards, and the soft pen brush is used for dipping the absolute ethyl alcohol to remove the lead powder exposed in the air of the optical fiber 16. Putting a new optical fiber pressing block 21 into the liquid tank 2, extruding the sliding block 5 and the sliding block 6 towards the liquid tank 2 to ensure that the distance between the sliding block 5 and the sliding block 6 is approximately the same as that between the edge of the liquid tank 2, fixing the tail fiber part of the optical fiber 16 to be processed by using the optical fiber clamp 13 and the optical fiber clamp 14, and loosening the sliding block 5 and the sliding block 6 to naturally stretch the optical fiber 16 outside the liquid tank 2 to be straight; the slider 4 and the slider 7 are pressed towards the liquid tank 2 and the remaining optical fiber 16 is fixed by the optical fiber clamp 12 and the optical fiber clamp 15, so that the remaining part of the tail fiber of the optical fiber 16 is naturally stretched and straightened. And (3) injecting hydrofluoric acid into the liquid tank 2, enabling the surface of the hydrofluoric acid to be higher than the bottom surface of the optical fiber pressing block 2, and finishing the corrosion processing on the second side surface of the optical fiber 16 after waiting for 22 minutes.
After the etching process is completed, the hydrofluoric acid in the liquid tank is drained by using an injector, then deionized water is injected, the residual hydrofluoric acid on the surface of the etched optical fiber 16 is cleaned, a sample is placed for 5 minutes after the deionized water is injected, and then deionized water waste liquid is pumped out and new deionized water is injected. After the process of changing water and standing the sample is repeated for 8 times, the residual waste liquid in the liquid tank 2 is pumped out, and the side surface of the current optical fiber 16 which is corroded is naturally dried. And opening the optical fiber clamp 13 and the optical fiber clamp 14, releasing the stress borne by the tail optical fiber 16 of the optical fiber near the new optical fiber press block 21, opening the optical fiber clamp 12 and the optical fiber clamp 15, taking out the new optical fiber press block 21, opening the buckle 20 of the rubber sleeve 18, taking out the optical fiber 16 sample, and obtaining the I-shaped optical fiber with two side surfaces almost strictly parallel.
Referring to fig. 2, the outer edge length W of the liquid tank 2116cm, inner edge length W2Has a length of 12cm and an outer edge width H of the liquid tank 2112cm, inner edge width H2Is 8 cm.
Referring to fig. 3, the calibration jig 19 has an outer edge length W3Is 12cm, and the length W of the hollow part47cm, outer edge height H3Is 20 cm.
Referring to fig. 4 and 5, the length W of the optical fiber compact 176Is 7cm, width D1Is 7cm, height H4Is 8 cm; width D of rubber sleeve 182Is 3.4875X 104Mu m; the length W of the optical fiber pressing block 17 after wrapping the rubber sleeve 1857.5cm, height H5It was 8.5 cm.
Referring to fig. 9, in the processed i-shaped optical fiber, the distance D between the i-shaped surface and the square core is335 μm and the square core plane is parallel to the i-shaped surface.
Example three:
an apparatus for manufacturing an i-shaped optical fiber based on hydrofluoric acid etching is shown in fig. 1. Objective table 1, liquid tank 2, moving track 3, slider 4, slider 5, slider 6, slider 7, spring 8, spring 9, spring 10, spring 11, fiber clamp 12, fiber clamp 13, fiber clamp 14, fiber clamp 15, fiber 16, fiber press 17, and rubber sleeve 18.
The collation jig 19 is shown in fig. 3. The optical fiber pressing block 17, the rubber sleeve 18, the calibration clamp 19 and the new optical fiber pressing block 21 function in the mode shown in fig. 4, 5, 6 and 7, and a buckle 20 is arranged on one side of the rubber sleeve 18. The cross-section of the diagonally processed square core I-fiber structure is shown in FIG. 10 and includes a core 22 and a cladding 23.
The specific combination mode is as follows: a liquid groove 2 is fixed in the middle of an object stage 1, and moving tracks 3 are formed on parts of the object stage 1 on two sides of the liquid groove 2; the sliding block 4, the sliding block 5, the sliding block 6 and the sliding block 7 can freely slide in the limited range of the moving track 3, the sliding block 4 and the sliding block 5 are connected through a spring 8, and the sliding block 6 and the sliding block 7 are connected through a spring 9; the slide block 5 is connected with the left edge of the liquid groove 2 by a spring 10, and the slide block 6 is connected with the right edge of the liquid groove 2 by a spring 11; the optical fiber clamp 12, the optical fiber clamp 13, the optical fiber clamp 14 and the optical fiber clamp 15 are respectively arranged on the slide block 4, the slide block 5, the slide block 6 and the slide block 7.
The optical fiber 16 in this embodiment is a square core fiber. Removing a coating layer from a region to be processed of the optical fiber 16, embedding the optical fiber 16 in lead powder for a period of time, taking out the optical fiber 16 coated with the lead powder, placing the optical fiber 16 at the approximate position of the middle part of an optical fiber pressing block 17, enabling a square fiber core plane to form an included angle of 45 degrees with the bottom surface of the optical fiber pressing block 17, adding a customized rubber sleeve 18 on two sides of the optical fiber pressing block 17, extruding the rubber sleeve 18 towards the direction of the optical fiber 16, confirming that the rubber sleeve 18 is extruded to the exact position by using a calibration clamp 19, firmly fixing the optical fiber 16 in a gap of the rubber sleeve 18 at the moment, and finally dipping anhydrous ethanol by using a soft brush to remove the lead powder exposed in the air on the surface of the optical fiber. Placing the optical fiber 16 fixed by the optical fiber pressing block 17 in the liquid tank 2 with one side facing downwards, then extruding the sliding block 5 and the sliding block 6 towards the liquid tank 2 to ensure that the distance between the sliding block 5 and the sliding block 6 and the edge of the liquid tank 2 is approximately the same, fixing the tail fiber part of the optical fiber 16 to be processed by using the optical fiber clamp 13 and the optical fiber clamp 14, and loosening the sliding block 5 and the sliding block 6 to naturally stretch the optical fiber 16 outside the liquid tank 2 to be straight; the slider 4 and the slider 7 are pressed towards the liquid tank 2 and the remaining optical fiber 16 is fixed by the optical fiber clamp 12 and the optical fiber clamp 15, so that the remaining part of the tail fiber of the optical fiber 16 is naturally stretched and straightened. And (3) injecting hydrofluoric acid into the liquid tank 2, enabling the surface of the hydrofluoric acid to be higher than the bottom surface of the optical fiber pressing block 2, and finishing the corrosion processing on one side surface of the optical fiber 16 after waiting for 19 minutes.
After the etching processing of one side surface of the optical fiber 16 is finished, the hydrofluoric acid in the liquid tank 2 is pumped by an injector, then deionized water is injected, the residual hydrofluoric acid on the surface of the etched optical fiber 16 is cleaned, a sample is placed for 5 minutes after the deionized water is injected, and then the waste deionized water is pumped out and new deionized water is injected. After the process of changing the water and standing the sample was repeated 7 times, the remaining waste liquid in the liquid tank 2 was extracted to allow the side of the optical fiber 16 to be etched and processed to be air-dried naturally. Opening the optical fiber clamp 13 and the optical fiber clamp 14, releasing the stress borne by the tail fiber of the optical fiber 16 near the optical fiber press block 17, picking up the optical fiber press block 17 currently wrapping the rubber sleeve 18 and placing the press block 17 into the calibration clamp 19, placing the new optical fiber press block 21 into the calibration clamp 19 and under the optical fiber press block 17 wrapping the rubber sleeve 18, unfastening the buckle 20 on the rubber sleeve 18 to enable the annular rubber sleeve 18 to become a belt shape and naturally droop, and fastening the buckle 20 of the rubber sleeve 18 on the new optical fiber press block 21 again to finish the transfer of the rubber sleeve 18 to the new optical fiber press block 21. The transfer process of the rubber boot 18 is illustrated with reference to fig. 6 and 7.
The optical fiber clamp 12 and the optical fiber clamp 15 are opened, the whole sample containing the optical fiber 16, the rubber sleeve 18 and the new optical fiber pressing block 21 is taken out, the surface of the new optical fiber pressing block 21 on which the optical fiber 16 is fixed faces downwards, and the soft pen brush is used for dipping the absolute ethyl alcohol to remove the lead powder exposed in the air of the optical fiber 16. Putting a new optical fiber pressing block 21 into the liquid tank 2, extruding the sliding block 5 and the sliding block 6 towards the liquid tank 2 to ensure that the distance between the sliding block 5 and the sliding block 6 is approximately the same as that between the edge of the liquid tank 2, fixing the tail fiber part of the optical fiber 16 to be processed by using the optical fiber clamp 13 and the optical fiber clamp 14, and loosening the sliding block 5 and the sliding block 6 to naturally stretch the optical fiber 16 outside the liquid tank 2 to be straight; the slider 4 and the slider 7 are pressed towards the liquid tank 2 and the remaining optical fiber 16 is fixed by the optical fiber clamp 12 and the optical fiber clamp 15, so that the remaining part of the tail fiber of the optical fiber 16 is naturally stretched and straightened. And (3) injecting hydrofluoric acid into the liquid tank 2, enabling the surface of the hydrofluoric acid to be higher than the bottom surface of the optical fiber pressing block 2, and finishing the corrosion processing on the second side surface of the optical fiber 16 after waiting for 19 minutes.
After the etching process is completed, the hydrofluoric acid in the liquid tank is drained by using an injector, then deionized water is injected, the residual hydrofluoric acid on the surface of the etched optical fiber 16 is cleaned, a sample is placed for 5 minutes after the deionized water is injected, and then deionized water waste liquid is pumped out and new deionized water is injected. After the process of changing water and standing the sample is repeated for 7 times, the residual waste liquid in the liquid tank 2 is pumped out, and the side surface of the current optical fiber 16 which is corroded is naturally dried. And opening the optical fiber clamp 13 and the optical fiber clamp 14, releasing the stress borne by the tail optical fiber 16 of the optical fiber near the new optical fiber press block 21, opening the optical fiber clamp 12 and the optical fiber clamp 15, taking out the new optical fiber press block 21, opening the buckle 20 of the rubber sleeve 18, taking out the optical fiber 16 sample, and obtaining the I-shaped optical fiber with two side surfaces almost strictly parallel.
Referring to fig. 2, the outer edge length W of the liquid tank 2120cm, inner edge length W2Has a length of 16cm, and an outer edge width H of the liquid tank 21Is 14cm, and has an inner edge width H2Is 10 cm.
Referring to fig. 3, the calibration jig 19 has an outer edge length W3Is 14cm, and the length W of the hollow part49cm, outer edge height H3Is 20 cm.
Referring to fig. 4 and 5, the length W of the optical fiber compact 176Is 10cm, and has a width D19cm, height H4Is 8 cm; width D of rubber sleeve 182Is 4.4875X 104Mu m; the length W of the optical fiber pressing block 17 after wrapping the rubber sleeve 18510.5cm, height H5It was 8.5 cm.
Referring to fig. 8, in the processed i-shaped optical fiber, the distance D between the i-shaped surface and the square core338.5 μm and the square core plane makes a 45 degree angle with the i-shaped surface.
Claims (6)
1. The utility model provides a I shape optic fibre making devices based on hydrofluoric acid corrodes technique which characterized in that: the device comprises an objective table (1), a liquid tank (2), a moving track (3), a sliding block (4), a sliding block (5), a sliding block (6), a sliding block (7), a spring (8), a spring (9), a spring (10), a spring (11), an optical fiber clamp (12), an optical fiber clamp (13), an optical fiber clamp (14), an optical fiber clamp (15), an optical fiber (16), an optical fiber press block (17), a rubber sleeve (18) and a calibration clamp (19).
2. The apparatus for manufacturing an I-shaped optical fiber according to claim 1, wherein: a buckle (20) is arranged on one side of the rubber sleeve (18), and the rubber sleeve (18) needs to be transferred from the optical fiber pressing block (17) to a new optical fiber pressing block (21) by using the buckle (20) and the calibration clamp (19) in the processing process of the I-shaped optical fiber.
3. The apparatus for manufacturing an I-shaped optical fiber according to claim 1, wherein: the sliding block (4), the sliding block (5), the sliding block (6) and the sliding block (7) can freely slide in the limited range of the moving track (3), the sliding block (4) and the sliding block (5) are connected through a spring (8), and the sliding block (6) and the sliding block (7) are connected through a spring (9); the slide block (5) is connected with the left side edge of the liquid groove (2) by a spring (10), and the slide block (6) is connected with the right side edge of the liquid groove (2) by a spring (11); the optical fiber clamp (12), the optical fiber clamp (13), the optical fiber clamp (14) and the optical fiber clamp (15) are respectively placed on the sliding block (4), the sliding block (5), the sliding block (6) and the sliding block (7).
4. An apparatus for manufacturing an I-shaped optical fiber according to any one of claims 1 to 3, wherein: hydrofluoric acid and deionized water are injected into the liquid tank (2) to respectively realize the functions of corroding the optical fiber and cleaning the optical fiber; when the etching processing is carried out, lead powder is wrapped on the surface part of the optical fiber (16), and the hydrofluoric acid can not etch the part wrapped by the lead powder on the surface of the optical fiber.
5. An I-shaped optical fiber manufacturing device based on hydrofluoric acid etching technology according to any one of claims 1-4, which is suitable for use in conventional single mode optical fiber and specialty optical fiber, and the core type of the optical fiber 16 includes, but is not limited to, round core optical fiber, square core optical fiber; the processing depth of the I-shaped optical fiber is strictly controlled by controlling the soaking time of the optical fiber (16) in the liquid tank (2).
6. An I-shaped optical fiber manufacturing apparatus based on hydrofluoric acid etching technology according to any one of claims 1-5, wherein the apparatus is mainly used for manufacturing an I-shaped optical fiber, but the manufacturing result of the apparatus includes, but is not limited to, micro-structured optical fiber platforms such as I-shaped optical fiber and D-shaped optical fiber.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115073022A (en) * | 2022-07-11 | 2022-09-20 | 诺丁汉大学卓越灯塔计划(宁波)创新研究院 | Reaction tank for optical fiber decoating and surface treatment and flow tank for packaging optical fiber module |
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| JPH05323148A (en) * | 1992-05-19 | 1993-12-07 | Sumitomo Cement Co Ltd | Connecting fiber device |
| CN1631616A (en) * | 2004-12-30 | 2005-06-29 | 暨南大学 | Optical fiber side edge polishing and grinding apparatus and its processing method |
| CN101852890A (en) * | 2010-01-08 | 2010-10-06 | 电子科技大学 | Single fiber optical tweezers manufacturing method based on corroded graded-index multimode fiber |
| CN102565925A (en) * | 2012-01-17 | 2012-07-11 | 清华大学 | Method for preparing microfine optical fiber by adopting chemical corrosion method |
| CN103278885A (en) * | 2013-04-27 | 2013-09-04 | 福建华科光电有限公司 | Manufacturing method of small-size optical fiber coupler |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH05323148A (en) * | 1992-05-19 | 1993-12-07 | Sumitomo Cement Co Ltd | Connecting fiber device |
| CN1631616A (en) * | 2004-12-30 | 2005-06-29 | 暨南大学 | Optical fiber side edge polishing and grinding apparatus and its processing method |
| CN101852890A (en) * | 2010-01-08 | 2010-10-06 | 电子科技大学 | Single fiber optical tweezers manufacturing method based on corroded graded-index multimode fiber |
| CN102565925A (en) * | 2012-01-17 | 2012-07-11 | 清华大学 | Method for preparing microfine optical fiber by adopting chemical corrosion method |
| CN103278885A (en) * | 2013-04-27 | 2013-09-04 | 福建华科光电有限公司 | Manufacturing method of small-size optical fiber coupler |
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| CN115073022A (en) * | 2022-07-11 | 2022-09-20 | 诺丁汉大学卓越灯塔计划(宁波)创新研究院 | Reaction tank for optical fiber decoating and surface treatment and flow tank for packaging optical fiber module |
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