CN108152889B - Device and method for manufacturing high-precision low-loss optical fiber Y-splitter - Google Patents
Device and method for manufacturing high-precision low-loss optical fiber Y-splitter Download PDFInfo
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- CN108152889B CN108152889B CN201810225511.1A CN201810225511A CN108152889B CN 108152889 B CN108152889 B CN 108152889B CN 201810225511 A CN201810225511 A CN 201810225511A CN 108152889 B CN108152889 B CN 108152889B
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/255—Splicing of light guides, e.g. by fusion or bonding
- G02B6/2553—Splicing machines, e.g. optical fibre fusion splicer
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/255—Splicing of light guides, e.g. by fusion or bonding
- G02B6/2555—Alignment or adjustment devices for aligning prior to splicing
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Abstract
The invention relates to a device and a method for manufacturing a high-precision low-loss optical fiber Y-splitter, which are characterized in that: the high-precision optical fiber fusion device comprises a computer, a data connecting wire, a program-controlled high-precision moving platform, a high-strength connecting wire, a pulley, a fixed frame, a quartz capillary tube, a weight clamp, a combustion nozzle, a nozzle supporting rod, a support base, a support rod, a support lower clamp, a support upper clamp, a Y-shaped rubber tube, a mass flow controller I, a mass flow meter I, an oxygen tank, a mass flow controller II, a mass flow meter II and a hydrogen tank, wherein the computer is connected with the program-controlled high-precision moving platform through the data connecting wire, an optical fiber to be fused is placed in the quartz capillary tube, and the program-controlled high-precision moving platform is connected with one end of the optical fiber to be fused, which is placed in the quartz capillary tube, sequentially through the high-strength connecting wire, the pulley and the fixed frame. The invention can meet the fusion condition of different optical fibers, and can realize the manufacture of Y-splitters with different coupling degrees, and the practical difficulty is low.
Description
Technical Field
The invention belongs to the technical field of optical fiber communication systems, and particularly relates to a device and a method for manufacturing a high-precision low-loss optical fiber Y-splitter.
Background
With the advent of the "information age" and the rapid development of communication networks, optical fibers capable of meeting the requirements of high-capacity and high-rate transmission have become a research hotspot. Meanwhile, high performance optical devices manufactured using optical fibers are attracting more and more attention. The Y-beam splitter is an important device unit in an optical fiber communication system, is not only the basis of optical devices such as a beam splitter, a beam combiner, an optical modulator, an M-Z interferometer, an optical switch and the like, but also can be independently used as a power divider, a combiner, a mode converter and a mode separator, and can be integrated with other elements such as a laser, a modulator, an optical switch and the like in the same optical fiber system. At present, the Y-splitter has wide application prospect in the fields of optical communication, optical sensors, interferometry and the like.
The Y-branch waveguide in the existing optical fiber communication system mainly takes a silicon-based waveguide as an implementation mode, and the common Y-branch waveguide consists of two or more incident waveguides, a transition waveguide and an output waveguide, and can be divided into a symmetrical type and an asymmetrical type due to different refractive index distribution and waveguide width selection. However, the Y-splitter in both forms cannot be fully coupled with the existing optical fiber link because the manufacturing materials are different from those of the optical fiber, and thus the connection loss of the system is increased. In another implementation mode of a Y-splitter using an optical fiber coupler (for example, a 2×2 optical fiber coupler), taking one end as an output end causes 3dB optical energy loss, and researchers realize two-end output with high extinction ratio through various means, but the consistency requirement on two optical fibers is very high, including the coupling length, the fiber core size, the fiber core refractive index and the like of the two optical fibers, and very strict requirements are put on manufacturing materials and all the optical fibers.
Chinese patent CN103278885a discloses a method for manufacturing a small-sized optical fiber coupler, which comprises the steps of removing coating layer, corroding cladding layer, melt tapering, primary packaging, secondary packaging, etc.; the method reduces the diameter of the cladding in the to-be-coupled area of the optical fiber line in advance by using the corrosion method, and the method shortens the distance between fiber cores of the optical fiber, but the cladding is easy to damage by corrosion, so that the optical energy loss is serious.
Chinese patent CN201903668U discloses a novel adjustable integrated optical power divider, which comprises a Y-branch waveguide and a coupling region, wherein an additional waveguide I and an additional waveguide II are disposed in the coupling region, the additional waveguide I and the additional waveguide II are parallel to the coupling region and symmetrically distributed on both sides of the Y-branch waveguide, the coupling region is disposed at the end of the total branch waveguide of the Y-branch waveguide, and the device is provided with parallel waveguides in the coupling region to change the local equivalent refractive index, but the total loss energy of the device is still up to 10%.
Therefore, in order to further realize the prospect of all-fiber communication network, improve the performance of the optical fiber communication system, reduce the light energy loss caused by higher insertion loss, and meanwhile, on the premise of ensuring the practicability and feasibility of the optical device, a novel Y-splitter device which has high precision, low loss and can be fully coupled is urgently needed.
Disclosure of Invention
In view of the above-described problems, the present invention provides an apparatus and a method for manufacturing a high-precision low-loss optical fiber Y-splitter, which are capable of manufacturing a high-precision low-loss optical fiber Y-splitter, and which are capable of sufficiently coupling the Y-splitter.
The technical scheme of the invention is as follows: a device and a method for manufacturing a high-precision low-loss optical fiber Y-splitter are characterized in that: the device comprises a computer, a data connecting wire, a program-controlled high-precision moving platform, a high-strength connecting wire, a pulley, a fixed frame, a quartz capillary tube, a heavy object clamp, a combustion nozzle, a nozzle support rod, a support base, a support rod, a support lower clamp, a support upper clamp, a Y-shaped rubber tube, a mass flow controller I, a mass flow meter I, an oxygen tank, a mass flow controller II, a mass flow meter II and a hydrogen tank; the computer is connected with the program-controlled high-precision mobile platform through a data connecting line; and the program-controlled high-precision moving platform is connected with one end of the optical fiber to be fused, which is placed in the quartz capillary tube, sequentially through a high-strength connecting wire, a pulley and a fixed frame.
Further, the number of the optical fibers to be fused which are placed in the quartz capillary is 2, namely an optical fiber I to be fused and an optical fiber II to be fused, the optical fibers I to be fused and the optical fiber II to be fused are placed in parallel in the quartz capillary, the core axial directions of the optical fibers I to be fused and the optical fibers II to be fused are subjected to grinding and polishing treatment, and the core edge and the cladding edge of the grinding and polishing surface of the optical fibers I to be fused are respectively aligned with the core edge and the cladding edge of the optical fibers II to be fused when placed in parallel.
Further, Y type rubber tube includes Y type rubber tube straight end, Y type rubber tube bifurcation end I, Y type rubber tube bifurcation end II, has an contained angle structure between Y type rubber tube bifurcation end I and the Y type rubber tube bifurcation end II, and Y type rubber tube straight end, Y type rubber tube bifurcation end I, Y type rubber tube bifurcation end II form a gas passage, and there is not the aperture in three junction.
Further, the combustion nozzle is of two semi-arc structures, the combustion nozzle is communicated with one end of the nozzle supporting rod, the nozzle supporting rod is fixed on the bracket rod through the lower bracket fixture and the upper bracket fixture, and the other end of the nozzle supporting rod is communicated with the straight end of the Y-shaped rubber tube.
Further, the capillary tube for placing the optical fiber to be fused is vertically placed in the through hole surrounded by the two semi-arc structures of the combustion nozzle.
Further, the mass flowmeter I is provided with an input end and an output end, the input end of the mass flowmeter I is communicated with the oxygen tank, the output end of the mass flowmeter I is communicated with the Y-shaped rubber tube bifurcation end I, the mass flowmeter I is provided with a mass flow controller I, the mass flowmeter I, the oxygen tank and the mass flow controller I form an oxygen supply system, the flow of oxygen introduced into the Y-shaped rubber tube bifurcation end I is controlled through the mass flow controller I, and the flow of oxygen is monitored through the mass flowmeter I at any moment.
Further, be equipped with input and output in the mass flowmeter II, mass flowmeter I input and hydrogen tank intercommunication, mass flowmeter II output and Y type rubber tube branch end II intercommunication are equipped with a mass flow controller II on the mass flowmeter II, and mass flowmeter II, hydrogen tank and mass flow controller II form hydrogen supply system, control the flow of the hydrogen in leading-in Y type rubber tube branch end II through mass flow controller II to monitor the flow of hydrogen constantly through mass flowmeter II.
Further, the oxygen gas introduced through the Y-shaped rubber tube bifurcation end I and the hydrogen gas introduced through the Y-shaped rubber tube bifurcation end II are mixed at the straight end of the Y-shaped rubber tube to form oxyhydrogen mixed gas.
Further, the weight clamp is fixedly connected with the bottom ends of the to-be-fused optical fiber I and the to-be-fused optical fiber II which are arranged in parallel in the quartz capillary, the weight clamp is positioned at a suspended position and is not contacted with other objects, the problems that the optical fibers cannot curl, swing randomly and the like under the action of weights at the bottoms of the to-be-fused optical fiber I and the to-be-fused optical fiber II are solved by utilizing a physical principle, and the fusion accuracy of the two optical fibers is improved.
Further, the precision of the program-controlled high-precision moving platform is 0.01 mu m, and the lengths of two optical fibers to be fused are determined by the length of the optical fibers which are axially ground and polished and the moving distance of the program-controlled high-precision moving platform in working, so that the precision can reach 0.01 mu m.
Further, the roughness of the inner surface of the quartz capillary tube is not more than 0.012 mu m, the diameter of the inner hole of the quartz capillary tube is larger than the radial total diameter of the optical fiber I to be fused and the optical fiber II to be fused, the pulley consists of a pulley body, a bearing and a bracket, a positioning groove is arranged on the pulley body, the roughness of the inner surface of the positioning groove is not more than 0.012 mu m, and a high-strength connecting wire is arranged in the positioning groove during operation.
Further, the coupling degree of the two optical fibers can be controlled by changing the axial grinding degree of the optical fibers and the moving speed of the program-controlled high-precision moving platform.
The invention also provides a method for manufacturing the high-precision low-loss optical fiber Y-splitter, which is characterized by comprising the following steps:
grinding and polishing, namely grinding and polishing the optical fiber to be fused along the axial direction;
the two optical fibers to be fused are ground and polished to be aligned, are placed into a quartz capillary tube, are vertically hung, are connected with a program-controlled high-precision moving platform through a fixed frame and a high-strength connecting line, and are connected with a weight clamp at the tail part of the quartz capillary tube;
fusion and heating to couple the two fibers.
Further, the grinding and polishing comprises two processes of grinding and polishing, wherein the grinding adopts a one-dimensional unidirectional movement mode to axially grind the optical fiber, the polishing is to perform high-temperature flame axial movement treatment on a grinding surface to eliminate microcracks, and the roughness of the grinding and polishing surface is not more than 0.02 mu m.
Further, during the assembly, the core edges and the cladding edges of the two polishing surfaces of the optical fibers to be fused are respectively aligned, and the roughness of the inner surface of the quartz capillary is not more than 0.012 mu m.
Further, the fusion is carried out by adopting oxyhydrogen flame for heating, the optical fiber to be fused is not in direct contact with the oxyhydrogen flame, the quartz capillary is a heat transfer medium, and the fusion temperature of the quartz capillary is higher than the temperature of the optical fiber to be fused.
Furthermore, the method can effectively control the fusion precision of the optical fibers to be fused, and the precision fluctuation is less than or equal to 1 mu m.
Compared with the prior art, the invention has the beneficial effects that:
(1) According to the invention, one end of the high-strength connecting wire is connected with the program-controlled high-precision moving platform through one end of the pulley, the other end of the high-strength connecting wire is connected with the fixing clip, the other end of the fixing clip is connected with one ends of two optical fibers to be fused in the quartz capillary tube, the optical fibers are vertically suspended and fixed at the other ends of the two optical fibers to be fused in the quartz capillary tube through the weight clip, no curling in the whole traction process is ensured, the moving distance of the high-strength connecting wire is the same under the action of the same traction force, and therefore the same coupling degree of fused parts of the optical fibers is ensured.
(2) The design of the Y-shaped rubber tube can lead the introduced hydrogen and oxygen to be fully mixed at the straight end of the Y-shaped rubber tube, so that the components of the gas burnt at the burning nozzle are the same, the difference of heat generated by components in different proportions is avoided, and the fusion degree of two optical fibers to be fused in the quartz capillary tube is influenced.
(3) The invention is controlled by a computer preset program, the accuracy is high, and the fusion accuracy of two optical fibers to be fused can reach 0.01 mu m.
(4) The oxygen flow and the hydrogen flow in the invention can be controlled, so that different temperatures are provided at the combustion nozzle, and the fusion conditions of different optical fibers are satisfied.
(5) According to the invention, the lower ends of the two optical fibers to be fused in the quartz capillary tube are fixed with the weight clamp, so that the two optical fibers to be fused can be stretched under the action of the weight, and the optical fibers are free from curling and not easy to shake, and the precision in fusion is improved.
Drawings
FIG. 1 is a schematic diagram of an apparatus and method for making a high-precision low-loss optical fiber Y-splitter;
FIG. 2 is a cross-sectional view of a quartz capillary with two fibers to be fused placed;
FIG. 3 is a schematic diagram of the Y-splitter structure;
fig. 4 is a Y-splitter process flow diagram.
The labels of fig. 1-3 are as follows: computer 1, data connection line 2, program controlled high precision moving platform 3, high strength connection line 4, pulley 5, fixed rack 6, quartz capillary 7, weight clamp 8, combustion nozzle 9, nozzle support 10, support base 11, support rod 12, support lower clamp 13, support upper clamp 14, Y-shaped rubber tube 15, Y-shaped rubber tube straight end 1501, Y-shaped rubber tube forked end I1502, Y-shaped rubber tube forked end II1503, mass flow controller I16, mass flow meter I17, oxygen tank 18, mass flow controller II19, mass flow meter II20, hydrogen tank 21, optical fiber to be fused I22, optical fiber to be fused II23, optical fiber to be fused I core 2201, optical fiber to be fused I cladding 2202, optical fiber to be fused II core 2301, optical fiber to be fused II cladding 2302, and Y-splitter 24.
Detailed Description
The invention will be described in further detail below with reference to the drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Example 1
An apparatus and a method for manufacturing a high-precision low-loss optical fiber Y-splitter as shown in fig. 1 are characterized in that: the device comprises a computer 1, a data connecting wire 2, a program-controlled high-precision moving platform 3, a high-strength connecting wire 4, a pulley 5, a fixed frame 6, a quartz capillary tube 7, a weight clamp 8, a combustion nozzle 9, a nozzle support rod 10, a support base 11, a support rod 12, a support lower clamp 13, a support upper clamp 14, a Y-shaped rubber tube 15, a mass flow controller I16, a mass flow meter I17, an oxygen tank 18, a mass flow controller II19, a mass flow meter II20 and a hydrogen tank 21; the computer 1 is connected with the program-controlled high-precision mobile platform 3 through a data connecting wire 2; the optical fiber to be fused is placed in the quartz capillary tube 7, and the program-controlled high-precision moving platform 3 is connected with one end of the optical fiber to be fused placed in the quartz capillary tube 7 through the high-strength connecting wire 4, the pulley 5 and the fixed frame 6 in sequence.
Further, with reference to fig. 2, the number of the optical fibers to be fused placed in the quartz capillary 7 is 2, namely an optical fiber to be fused I22 and an optical fiber to be fused II23, the optical fibers to be fused I22 and the optical fiber to be fused II23 are placed in parallel in the quartz capillary, the axial directions of the optical fibers to be fused I22 and the optical fiber to be fused I23I are both subjected to grinding and polishing treatment, and when placed in parallel, the edges of the core 2201 of the optical fiber to be fused I and the edges of the cladding 2202 of the optical fiber to be fused I are aligned with the edges of the core 2301 of the optical fiber to be fused II and the cladding 2302 of the optical fiber to be fused II respectively.
Further, the Y-shaped rubber tube 15 includes a Y-shaped rubber tube straight end 1501, a Y-shaped rubber tube bifurcation end I1502, a Y-shaped rubber tube bifurcation end II1503, an included angle structure is formed between the Y-shaped rubber tube bifurcation end I1502 and the Y-shaped rubber tube bifurcation end II1503, and the Y-shaped rubber tube straight end 1501, the Y-shaped rubber tube bifurcation end I1502, and the Y-shaped rubber tube bifurcation end II1503 form a gas passage, and the connection of the three is tightly connected with the outside and is different from the outside.
Further, the combustion nozzle 9 has two semi-arc structures, the combustion nozzle 9 is communicated with one end of the nozzle support rod 10, the nozzle support rod 10 is fixed on the support rod 12 through the lower support clamp 13 and the upper support clamp 14, and the other end of the nozzle support rod 10 is communicated with the linear end 1501 of the Y-shaped rubber tube.
Further, the capillary tube 7 for placing the optical fiber to be fused is vertically placed in a through hole surrounded by two semi-arc structures of the combustion nozzle 9.
Further, the mass flowmeter I17 is provided with an input end and an output end, the input end of the mass flowmeter I17 is communicated with the oxygen tank 18, the output end of the mass flowmeter I17 is communicated with the Y-shaped rubber tube bifurcation end I1502, the mass flowmeter I17 is provided with a mass flow controller I16, the mass flowmeter I17, the oxygen tank 18 and the mass flow controller I16 form an oxygen supply system, the flow of oxygen introduced into the Y-shaped rubber tube bifurcation end I1502 is controlled through the mass flow controller I16, and the flow of oxygen is monitored at any moment through the mass flowmeter I17.
Further, an input end and an output end are arranged in the mass flowmeter II20, the input end of the mass flowmeter II20 is communicated with the hydrogen tank 21, the output end of the mass flowmeter II20 is communicated with the Y-shaped rubber tube forked end II1503, a mass flow controller II19 is arranged on the mass flowmeter II20, the hydrogen tank 21 and the mass flow controller II19 form a hydrogen supply system, the flow of hydrogen in the Y-shaped rubber tube forked end II1503 is controlled through the mass flow controller II19, and the flow of the hydrogen is monitored at any moment through the mass flowmeter II 20.
Further, the oxygen gas introduced through the Y-shaped rubber tube bifurcation end I1502 and the hydrogen gas introduced through the Y-shaped rubber tube bifurcation end II1503 are fully mixed at the Y-shaped rubber tube straight end 1501 to form an oxyhydrogen mixed gas.
Further, the weight clamp 8 is fixedly connected with the bottom ends of the to-be-fused optical fiber I22 and the to-be-fused optical fiber II23 which are placed in parallel in the quartz capillary tube 7, the weight clamp 8 is positioned at a suspension position and is not contacted with other objects, and the problems of curling, random swinging and the like of the optical fibers can not occur under the action of weights at the bottoms of the to-be-fused optical fiber I22 and the to-be-fused optical fiber II23 by utilizing a physical principle, so that the fusion accuracy of the two optical fibers is improved.
Further, the precision of the program-controlled high-precision moving platform 3 is 0.01 μm, and the lengths of two optical fibers to be fused are determined by the length of the optical fibers which are axially ground and polished and the moving distance of the program-controlled high-precision moving platform 3 in working, so that the precision can reach 0.01 μm.
Further, the roughness of the inner surface of the quartz capillary tube 7 is not more than 0.012 mu m, the diameter of the inner hole of the quartz capillary tube 7 is larger than the total radial diameter of the optical fiber I22 to be fused and the optical fiber II23 to be fused, the pulley 5 consists of a pulley body, a bearing and a bracket, a positioning groove is arranged on the pulley body, the roughness of the inner surface of the positioning groove is not more than 0.012 mu m, and the high-strength connecting wire 4 is arranged in the positioning groove when the quartz capillary tube is in operation.
Example 2
An apparatus and a method for manufacturing a high-precision low-loss optical fiber Y-splitter as shown in fig. 1 are characterized in that: the device comprises a computer 1, a data connecting wire 2, a program-controlled high-precision moving platform 3, a high-strength connecting wire 4, a pulley 5, a fixed frame 6, a quartz capillary tube 7, a weight clamp 8, a combustion nozzle 9, a nozzle support rod 10, a support base 11, a support rod 12, a support lower clamp 13, a support upper clamp 14, a Y-shaped rubber tube 15, a mass flow controller I16, a mass flow meter I17, an oxygen tank 18, a mass flow controller II19, a mass flow meter II20 and a hydrogen tank 21; the computer 1 is connected with the program-controlled high-precision mobile platform 3 through a data connecting wire 2; the optical fiber to be fused is placed in the quartz capillary tube 7, and the program-controlled high-precision moving platform 3 is connected with one end of the optical fiber to be fused placed in the quartz capillary tube 7 through the high-strength connecting wire 4, the pulley 5 and the fixed frame 6 in sequence.
The method for manufacturing the high-precision low-loss optical fiber Y-splitter employed in the present embodiment, as shown in fig. 4, includes the steps of:
grinding and polishing, namely grinding and polishing the optical fiber to be fused along the axial direction;
the two optical fibers to be fused are ground and polished to be aligned, are placed into a quartz capillary tube, are vertically hung, are connected with a program-controlled high-precision moving platform through a fixed frame and a high-strength connecting line, and are connected with a weight clamp at the tail part of the quartz capillary tube;
fusion and heating to couple the two fibers.
Further, the grinding and polishing comprises two processes of grinding and polishing, wherein the grinding adopts a one-dimensional unidirectional movement mode to axially grind the optical fiber, the polishing is to perform high-temperature flame axial movement treatment on a grinding surface to eliminate microcracks, and the roughness of the grinding and polishing surface is not more than 0.02 mu m.
Further, during the assembly, the core edges and the cladding edges of the two polishing surfaces of the optical fibers to be fused are respectively aligned, and the roughness of the inner surface of the quartz capillary is not more than 0.012 mu m.
Further, the fusion is carried out by adopting oxyhydrogen flame for heating, the optical fiber to be fused is not in direct contact with the oxyhydrogen flame, the quartz capillary is a heat transfer medium, and the fusion temperature of the quartz capillary is higher than the temperature of the optical fiber to be fused.
Furthermore, the method can effectively control the fusion precision of the optical fibers to be fused, and the precision fluctuation is less than or equal to 1 mu m.
The method comprises the steps of writing a programmed program into a computer 1, aligning and placing the grinding and polishing surfaces of two optical fibers to be fused into a quartz capillary tube 7, fixing the quartz capillary tube 7 penetrating the optical fibers to be fused with a high-strength connecting wire 4 through a fixing frame 6, enabling the quartz capillary tube 7 to be in a vertical suspension state, enabling the other end part of the quartz capillary tube 7 to be provided with a heavy clamp 8, enabling the heavy clamp 8 to clamp the end part of the optical fibers to be fused, enabling the optical fibers to be difficult to swing and twist, starting equipment after the optical fibers to be fused are placed, controlling the fusion length in a mode that the computer is combined with a program-controlled high-precision moving platform, carrying out hydrogen and oxygen input by the equipment according to preset parameters, fusing the optical fibers to be fused in the capillary tube 7 under the action of the oxyhydrogen flame, and moving upwards under the traction of the program-controlled high-precision moving platform 3, finally obtaining an optical fiber Y-shaped splitter 24 after fusing the grinding surfaces of the two optical fibers to be fused, adjusting the traction speed of the high-precision moving platform 3, simultaneously, enabling the input quantity of hydrogen and oxygen to be controlled to be different from the optical fibers to be fused to be different from each other, and the high-precision optical fiber Y-shaped optical fiber can be fused through the control of the high-precision optical fiber fusion device, and the optical fiber fusion device can realize the fusion device with the control of the high-precision optical fiber fusion device. The Y-shaped splitter manufactured by the method has small practical difficulty and can be widely applied to the fields of future high-capacity high-speed optical networks, interferometry, optical sensing and the like.
While the foregoing description illustrates and describes the preferred embodiments of the present invention, as noted above, it is to be understood that the invention is not limited to the forms disclosed herein but is not to be construed as excluding other embodiments, and that various other combinations, modifications and environments are possible and may be made within the scope of the inventive concepts described herein, either by way of the foregoing teachings or by those of skill or knowledge of the relevant art. And that modifications and variations which do not depart from the spirit and scope of the invention are intended to be within the scope of the appended claims.
Claims (5)
1. The utility model provides a device for making high accuracy low-loss optic fibre Y divides ware which characterized in that: the device comprises a computer (1), a data connecting wire (2), a program-controlled high-precision moving platform (3), a high-strength connecting wire (4), a pulley (5), a fixed frame (6), a quartz capillary tube (7), a weight clamp (8), a combustion nozzle (9), a nozzle support rod (10), a support base (11), a support rod (12), a support lower clamp (13), a support upper clamp (14), a Y-shaped rubber tube (15), a mass flow controller I (16), a mass flow meter I (17), an oxygen tank (18), a mass flow controller II (19), a mass flow meter II (20) and a hydrogen tank (21); the computer (1) is connected with the program-controlled high-precision mobile platform (3) through a data connecting wire (2); an optical fiber to be fused is placed in the quartz capillary tube (7), and the program-controlled high-precision moving platform (3) is connected with one end of the optical fiber to be fused placed in the quartz capillary tube (7) through a high-strength connecting wire (4), a pulley (5) and a fixed frame (6) in sequence;
the number of the optical fibers to be fused is 2, namely an optical fiber I (22) to be fused and an optical fiber II (23) to be fused are respectively arranged in the quartz capillary (7), and the optical fibers I (22) to be fused and the optical fibers II (23) to be fused are arranged in parallel in the quartz capillary (7); the Y-shaped rubber tube (15) comprises a Y-shaped rubber tube straight end (1501), a Y-shaped rubber tube bifurcation end I (1502) and a Y-shaped rubber tube bifurcation end II (1503), an included angle structure is arranged between the Y-shaped rubber tube bifurcation end I (1502) and the Y-shaped rubber tube bifurcation end II (1503), and a gas passage is formed by the Y-shaped rubber tube straight end (1501), the Y-shaped rubber tube bifurcation end I (1502) and the Y-shaped rubber tube bifurcation end II (1503);
the combustion spray head (9) is of two semi-arc structures, the combustion spray head (9) is communicated with one end of a spray head support rod (10), the spray head support rod (10) is fixed on a support rod (12) through a support lower clamp (13) and a support upper clamp (14), and the other end of the spray head support rod (10) is communicated with a Y-shaped rubber tube straight end (1501);
the pulley (5) consists of a pulley body, a bearing and a bracket, wherein a positioning groove is formed in the pulley body, and the roughness in the positioning groove is not more than 0.012 mu m.
2. An apparatus for making a high precision low loss optical fiber Y-splitter according to claim 1, wherein: the mass flowmeter I (17) is provided with an input end and an output end, the input end of the mass flowmeter I (17) is communicated with the oxygen tank (18), the output end of the mass flowmeter I (17) is communicated with the Y-shaped rubber tube bifurcation end I (1502), the mass flowmeter I (17) is provided with a mass flow controller I (16), and the mass flowmeter I (17), the oxygen tank (18) and the mass flow controller I (16) form an oxygen supply system; the hydrogen supply system is characterized in that an input end and an output end are arranged in the mass flowmeter II (20), the input end of the mass flowmeter II ((20) is communicated with the hydrogen tank (21), the output end of the mass flowmeter II (20) is communicated with the Y-shaped rubber tube bifurcation end II (1503), a mass flow controller II (19) is arranged on the mass flowmeter II (20), and the mass flowmeter II (20), the hydrogen tank (21) and the mass flow controller II (19) form the hydrogen supply system.
3. A method for making a high-precision low-loss optical fiber Y-splitter, characterized by using an apparatus for making a high-precision low-loss optical fiber Y-splitter as claimed in claim 1 or 2, comprising the steps of:
grinding and polishing, namely grinding and polishing the optical fiber to be fused along the axial direction;
the two optical fibers to be fused are ground and polished to be aligned, are placed into a quartz capillary tube, are vertically hung, are connected with a program-controlled high-precision moving platform (3) through a fixed frame (6) and a high-strength connecting wire (4), and are connected with a weight clamp (8) at the tail part of the quartz capillary tube;
fusing, heating to couple the two fibers to be fused;
in the assembly process, the core edges and the cladding edges of the two optical fibers to be fused are respectively aligned, and the roughness of the inner surface of the quartz capillary tube (7) is not more than 0.012 mu m;
the fusion is carried out by adopting oxyhydrogen flame for heating, the optical fiber to be fused is not in direct contact with the oxyhydrogen flame, the quartz capillary tube (7) is a heat transfer medium, and the fusion temperature of the quartz capillary tube (7) is higher than the temperature of the optical fiber to be fused.
4. A method for making a high-precision low-loss optical fiber Y-splitter according to claim 3, wherein: the grinding and polishing process comprises two processes of grinding and polishing, wherein the grinding adopts a one-dimensional unidirectional movement mode to axially grind the optical fiber, the polishing is to perform high-temperature flame axial movement treatment on a grinding surface to eliminate microcracks, and the roughness of the grinding and polishing surface is not more than 0.02 mu m.
5. A method for making a high-precision low-loss optical fiber Y-splitter according to claim 3, wherein: the method can effectively control the fusion precision of the optical fibers to be fused, and the precision fluctuation is less than or equal to 1 mu m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810225511.1A CN108152889B (en) | 2018-03-19 | 2018-03-19 | Device and method for manufacturing high-precision low-loss optical fiber Y-splitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810225511.1A CN108152889B (en) | 2018-03-19 | 2018-03-19 | Device and method for manufacturing high-precision low-loss optical fiber Y-splitter |
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| CN105093412A (en) * | 2014-05-15 | 2015-11-25 | 富通集团有限公司 | Multi-core optical fiber coupler and machining method thereof |
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| JPH06281837A (en) * | 1992-05-19 | 1994-10-07 | Sumitomo Cement Co Ltd | Method for splicing optical fiber and coupler thereby |
| CN1991424A (en) * | 2005-12-28 | 2007-07-04 | 豪雅冠得股份有限公司 | Light guide and light irradiation device |
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