CN111552035A - High-precision MT (MT) ferrule and manufacturing method thereof - Google Patents
High-precision MT (MT) ferrule and manufacturing method thereof Download PDFInfo
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- CN111552035A CN111552035A CN202010434427.8A CN202010434427A CN111552035A CN 111552035 A CN111552035 A CN 111552035A CN 202010434427 A CN202010434427 A CN 202010434427A CN 111552035 A CN111552035 A CN 111552035A
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- bottom plate
- groove
- precision
- grooves
- shaped groove
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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
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/3833—Details of mounting fibres in ferrules; Assembly methods; Manufacture
- G02B6/3834—Means for centering or aligning the light guide within the ferrule
- G02B6/3838—Means for centering or aligning the light guide within the ferrule using grooves for light guides
- G02B6/3839—Means for centering or aligning the light guide within the ferrule using grooves for light guides for a plurality of light guides
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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
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/3833—Details of mounting fibres in ferrules; Assembly methods; Manufacture
-
- 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
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/3833—Details of mounting fibres in ferrules; Assembly methods; Manufacture
- G02B6/3855—Details of mounting fibres in ferrules; Assembly methods; Manufacture characterised by the method of anchoring or fixing the fibre within the ferrule
- G02B6/3861—Adhesive bonding
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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
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/3869—Mounting ferrules to connector body, i.e. plugs
Abstract
The invention relates to a high-precision MT insertion core and a manufacturing method thereof, wherein the MT insertion core comprises a bottom plate, a cover plate, a connecting rod and an end cap, the cover plate is arranged on the bottom plate in a covering manner, the end cap is adjacently arranged at one end of the bottom plate, one end of the upper surface of the bottom plate is provided with a first V groove, two sides of the first V groove, which are positioned on the upper surface of the bottom plate, are respectively provided with a second V groove, an end wall, which is close to one end of the bottom plate, on the end wall of the end cap is provided with an insertion hole, a through hole is arranged at a position, which corresponds to the first V groove, on the end cap, one end of an optical fiber extends into the first V groove from one end, which is far away from the. According to the invention, the first V-shaped groove and the second V-shaped groove are arranged on the bottom plate, so that the optical fiber can be accurately fixed, the bottom plate and the plug are accurately connected through the connecting rod, the mass production is facilitated, the precision can reach 0.5 mu m, the production cost is greatly reduced, the bottom plate and the cover plate are made of glass materials, the coating is facilitated, and the cost is low.
Description
Technical Field
The invention relates to the technical field of optical fiber (5) communication, in particular to a high-precision MT (multi-terminal) ferrule and a manufacturing method thereof.
Background
MPO connectors are large capacity connectors widely used in the field of optical communications, in which an MT ferrule is the core component of the connector. When a group of optical fibers (5) need to be connected, the group of optical fibers (5) are firstly inserted into an MT insertion core (101) and can be independently used after the processes of glue fixation, end face grinding and the like, and can also be connected with an MPO set of components through a flange plate after being assembled, wherein a male PIN PIN (104) or a female PIN PIN (103) is respectively installed in a male MPO connector or a female MPO connector to form an MPO male connector and a female connector. Wherein the MT connector is made of plastic, the positioning precision of the optical fiber (5) is mainly controlled by the inner diameter and the relative position of the positioning hole, and the butt joint precision between the MT ferrules is mainly controlled by the precision of the positioning hole and the precision of the outer diameter of the PIN needle. And the precision requirement of other assemblies of the MPO connector for fixing the MT inserting core is not high.
As shown in fig. 1, the existing MPO connector mainly includes an MT ferrule (101), an external card member (102), a male PIN (104) (or a female PIN (103)), a spring (105), an internal card member (106), and a tail sleeve (107). The MT ferrule (101) presents several practical problems:
1. the MT insertion core has low precision and high price, the highest precision which can be achieved by the MT insertion core at present is 2 mu m, and the more the precision is close to 2 mu m, the more expensive the price is;
2. the connecting end face is made of plastic, so that the cost is high, the yield is low, and the cost is extremely high;
3. when the high-power optical assembly is externally connected, the connecting end face is easily burnt out, so that the connector fails.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide a high-precision MT ferrule and a manufacturing method thereof, aiming at the above-mentioned deficiencies of the prior art.
The technical scheme for solving the technical problems is as follows: a high-precision MT insertion core comprises a bottom plate made of glass materials, a cover plate, an even number of connecting rods and plugs, wherein the cover plate is matched with the bottom plate and made of glass materials, the cover plate is arranged on the bottom plate in a covering mode, the plugs are adjacently arranged at one end of the bottom plate, one end, far away from the plugs, of the upper surface of the bottom plate is provided with a group of first V grooves for inserting optical fibers, second V grooves for inserting the connecting rods are respectively arranged on two sides, located on the first V grooves, of the upper surface of the bottom plate, end walls, close to one end of the bottom plate, of the plugs are provided with insertion holes which correspond to the second V grooves in a one-to-one mode and are matched with the connecting rods, through holes for the optical fibers to pass through are formed in positions, corresponding to the first V grooves, of the plugs, coating layers are stripped from the ends, far away from the bottom plate, of the optical fibers stretch into the end walls, penetrate through, one end of the connecting rod is inserted into the corresponding jack on the plug, the other end of the connecting rod extends into the corresponding second V-shaped groove, and when the cover plate is covered on the bottom plate, the cover plate can correspondingly fix the optical fiber and the connecting rod in the first V-shaped groove and the second V-shaped groove respectively.
The invention has the beneficial effects that: according to the high-precision MT ferrule, the first V groove and the second V groove are arranged on the bottom plate, optical fibers can be accurately fixed, the bottom plate and the plugs can be accurately connected through the connecting rods, mass production is facilitated, the precision can reach 0.5 mu m, the production cost is greatly reduced, the bottom plate and the cover plate are made of glass, coating is facilitated (coating is convenient if necessary, and coating is not required, certainly, the coating is not required), the cost is low, and when a high-power assembly is connected, the high-precision MT ferrule is completely compatible with three existing MPO connectors due to the high-temperature resistance property of glass, can be directly assembled into an MPO connector, or can be used as an independent assembly to be butted with the existing MT ferrule, and is very convenient.
On the basis of the technical scheme, the invention can be further improved as follows:
further: one end, close to the plug, of the bottom plate is lower than the other end of the bottom plate, and a second step is formed in the middle of the upper surface of the bottom plate.
The beneficial effects of the further scheme are as follows: through set up the second step on the bottom plate, can make things convenient for optic fibre inserts smoothly behind the first V groove, first V groove and on the bottom plate corresponding position respectively with optic fibre contact sets up, can be right like this optic fibre plays better supporting role, also makes things convenient for follow-up simultaneously to fix through curing glue.
Further: and the upper surface of one side of the second step, which is close to the plug, on the bottom plate is fixedly connected with the corresponding part on the optical fiber through curing glue.
The beneficial effects of the further scheme are as follows: the upper surface of one side, close to the plug, of the second step on the bottom plate is fixedly connected with the corresponding part on the optical fiber through the curing glue, so that the part corresponding to the optical fiber can be fixed on the bottom plate, and the optical fiber can be better fixed and protected.
Further: the upper surface of the bottom plate is positioned on two sides of the first V-shaped groove and is respectively downwards recessed and formed with a first step, the upper surface of one side, close to the first V-shaped groove, of the first step is arranged at the same height as the upper end of the first V-shaped groove, the side, close to the first V-shaped groove, of the first step and the first V-shaped groove are filled with curing glue, when the cover plate is covered on the bottom plate, the lower surface of the cover plate, the first step and the first V-shaped groove jointly form a filling area, and the cover plate, one end, exposed out of the coating, of the optical fiber and the bottom plate are fixedly connected through the curing glue filled in the filling area.
The beneficial effects of the further scheme are as follows: through set up first step on the bottom plate, can be convenient like this the apron lid is in during on the bottom plate, the apron with leave the clearance between the top in first V groove, conveniently pour into solidification glue into to can control the volume of gluing, avoid glue overflow extremely in the second V inslot and lead to the unable normal insertion of connecting rod.
Further: when the cover plate covers the bottom plate, the outer wall of the cladding exposed by the optical fiber is respectively in contact with the lower surface of the cover plate and the two inclined inner walls of the first V-shaped groove.
The beneficial effects of the further scheme are as follows: through with the cladding outer wall that exposes on the optic fibre respectively with the lower surface of apron and two oblique inner wall contact settings of first V groove can be right optic fibre carries out more stable support, accurate butt joint when guaranteeing optic fibre and outside optical assembly to also be convenient for follow-up glue solidification of carrying on.
Further: the cover plate is provided with third V grooves corresponding to the second V grooves one by one, when the cover plate is covered on the bottom plate, the second V grooves are aligned with the corresponding third V grooves downwards, and the connecting rods are respectively in contact with the inner walls of the second V grooves and the third V grooves.
The beneficial effects of the further scheme are as follows: through set up on the apron the third V groove, can cooperate the first V groove on the bottom plate will the one end that exposes the cladding on the optic fibre is fixed better, guarantees the uniformity of product.
Further: the connecting rod is made of kovar alloy.
The beneficial effects of the further scheme are as follows: the kovar alloy has a relatively constant low or medium coefficient of expansion, which is close to that of glass, thereby achieving a matched seal.
The invention also provides a manufacturing method of the high-precision MT ferrule, which comprises the following steps:
processing a workpiece which is processed in advance and used for manufacturing a bottom plate to obtain a single bottom plate;
a high-precision scribing machine is adopted to machine a group of first V-shaped grooves on the bottom wall of the second groove on the bottom plate along the width direction of the bottom wall, and second V-shaped grooves are respectively machined on two sides of the first V-shaped grooves;
stripping the coating layer from one end of the optical fiber to expose the corresponding cladding, and enabling one end of the optical fiber, which is exposed out of the cladding, to penetrate through a through hole which is preset in the plug and extend into the first V-shaped groove;
covering the cover plate on the bottom plate, and injecting curing glue into the first V-shaped groove to fix one end, exposed out of the cladding, of the optical fiber in the first V-shaped groove;
inserting one end of a connecting rod into the corresponding second V-shaped groove, inserting the other end of the connecting rod into a preset jack on the plug, enabling the plug to be in contact with the bottom plate, and injecting curing glue into the second V-shaped groove and the through hole and the jack on the plug respectively, so that the connecting rod is connected and fixed with the bottom plate, the cover plate and the plug respectively, and manufacturing is completed;
the bottom plate and the cover plate are made of glass.
The manufacturing method of the high-precision MT insertion core is convenient for batch production, the precision of the V-shaped groove can reach 0.5 mu m, the price of raw materials is low, the mature production process of the optical fiber array adopted in partial working procedures is suitable for mass production, the price of the raw materials is low, the bottom plate and the cover plate are both made of glass materials, the coating is convenient (the coating is convenient if necessary, the coating is not needed, and the coating is not needed, the cost is low, and when a high-power optical component is connected, because the glass is high-temperature resistant and has good stability, the high-precision MT insertion core is completely compatible with the prior MPO connector parts, the high-precision MT insertion core can be directly assembled into an MPO connector.
On the basis of the technical scheme, the invention can be further improved as follows:
further: the method for machining the workpiece which is machined in advance and used for manufacturing the bottom plate comprises the following steps:
processing a plurality of parallel equally-spaced second grooves on a workpiece which is processed in advance and used for manufacturing a bottom plate, and forming corresponding first steps at the side wall edges of the second grooves;
continuously processing a plurality of first grooves which are parallel and equally spaced and are vertical to the second grooves on the workpiece, and forming corresponding second steps on the side wall edges of the first grooves;
and cutting the workpiece between two adjacent first grooves and between two adjacent second grooves along preset cutting lines to obtain a plurality of single bottom plates.
The beneficial effects of the further scheme are as follows: the precision of the V-shaped groove accurately processed on the workpiece by adopting the high-precision scribing machine can reach 0.5 mu m, and the V-shaped groove processing method is suitable for mass production and greatly reduces the production cost.
Further: the upper surface of one side, close to the plug, of the second step on the bottom plate is fixedly connected with the corresponding part on the optical fiber through curing glue, and the part, close to the plug, of the second step on the metal rod and the corresponding part on the bottom plate are fixed through curing glue.
The beneficial effects of the further scheme are as follows: through inciting somebody to action on the bottom plate the second step is close to the upper surface of end cap one side is connected fixedly through curing glue with the corresponding position on the optic fibre, can with the position that optic fibre corresponds with the bottom plate is fixed, and is right like this optic fibre carries out better fixed and protection, through lie in on the metal pole the second step is close to end cap one side with the position that corresponds on the bottom plate is fixed through curing glue, can guarantee the base with the end cap passes through the metal pole is firmly connected fixedly, avoids deviating from in the use.
Drawings
FIG. 1 is a schematic view of a prior art MPO connector;
FIG. 2 is an exploded view of the high-precision MT ferrule of the present invention;
FIG. 3 is a side view of the base plate of the present invention;
FIG. 4 is a schematic diagram of the overall structure of the high-precision MT ferrule of the present invention;
FIG. 5 is a schematic view of a first step being machined on a workpiece in accordance with the present invention;
FIG. 6 is a schematic view of a second step being machined on a workpiece in accordance with the present invention;
FIG. 7 is a schematic view of the present invention machining a first V-groove and a second V-groove in a workpiece;
FIG. 8 is a schematic view of a workpiece cut into a single piece of backing plate according to the present invention;
FIG. 9 is a schematic view of the cover plate covering the bottom plate and fixing the optical fibers according to the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1. the optical fiber connector comprises a bottom plate, 2, a cover plate, 3, a connecting rod, 4, plugs, 5 and optical fibers;
11. first V groove, 12, first step, 13, second V groove, 14, second step, 21, third V groove, 41, jack, 42, through hole.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
As shown in fig. 2 to 4, a high-precision MT ferrule includes a bottom plate 1 made of glass, a cover plate 2 made of glass and matched with the bottom plate 1, an even number of connecting rods 3, and a plug 4, wherein the cover plate 2 is covered on the bottom plate 1, the plug 4 is adjacently disposed at one end of the bottom plate 1, one end of the upper surface of the bottom plate 1, which is far away from the plug 4, is provided with a set of first V-shaped grooves 11 for inserting optical fibers 5, second V-shaped grooves 13 for inserting the connecting rods 3 are respectively disposed at two sides of the first V-shaped grooves 11 on the upper surface of the bottom plate 1, insertion holes 41 corresponding to the second V-shaped grooves 13 one by one and matched with the connecting rods 3 are disposed on an end wall of the plug 4, which is close to one end of the bottom plate, and through holes 42 for the optical fibers 5 to pass through are disposed at positions corresponding to the first V-shaped grooves 11 on the plug 4, the one end that peels off the coating on optic fibre 5 and expose the covering is followed end cap 4 is kept away from bottom plate 1 stretches into and passes insert behind through-hole 42 in the first V groove 11, the one end of connecting rod 3 is inserted in the jack that corresponds on end cap 4, and the other end stretches into correspondingly in the second V groove 13, and works as apron 2 lid is located when on the bottom plate 1, apron 2 can be fixed in optic fibre 5 and connecting rod 3 respectively corresponding in first V groove 11 and the second V groove 13.
According to the high-precision MT ferrule, the first V-shaped groove 11 and the second V-shaped groove 13 are formed in the bottom plate 1, so that an optical fiber 5 can be accurately fixed, the bottom plate 1 and the plug 4 can be accurately connected through the connecting rod 3, mass production is facilitated, the precision can reach 0.5 mu m, the production cost is greatly reduced, the bottom plate 1 and the cover plate 2 are made of glass, coating is facilitated (coating is facilitated if necessary, and coating is not required certainly), the cost is low, and when a high-power assembly is connected, due to the high-temperature resistance of glass, the high-precision MT ferrule is good in stability, is completely compatible with three existing MPO connectors, can be directly assembled into an MPO connector, or can be used as an independent assembly to be butted with the existing MT ferrule, and is very convenient.
In one or more embodiments provided by the present invention, one end of the bottom plate 1 close to the plug 4 is lower than the other end, and a second step 14 is formed in the middle of the upper surface of the bottom plate 1. Through set up second step 14 on the bottom plate 1, can be convenient optic fibre 5 inserts smoothly behind the first V groove 11, first V groove 11 and the position that corresponds on the bottom plate 1 respectively with optic fibre 5 contact sets up, and is right like this optic fibre 5 plays better supporting role, also makes things convenient for follow-up glue to fix simultaneously.
Optionally, in one or more embodiments provided by the present invention, the upper surface of the bottom plate 1 on the side of the second step 14 close to the plug 4 is fixedly connected to the corresponding portion on the optical fiber 5 by using a curing glue. The upper surface of the bottom plate 1, which is close to the plug 4, of the second step 14 is fixedly connected with the corresponding part of the optical fiber 5 through the curing glue, so that the part corresponding to the optical fiber 5 can be fixed with the bottom plate 1, and the optical fiber 5 can be better fixed and protected.
In one or more embodiments provided by the present invention, the upper surface of the bottom plate 1 is located at two sides of the first V-shaped groove 11 and is respectively recessed downward to form a first step 12, the upper surface of one side of the first step 12 close to the first V-shaped groove 11 is arranged at the same height as the upper end of the first V-shaped groove 11, the side of the first step 12 close to the first V-shaped groove 11 and the first V-shaped groove 11 are filled with the curing glue, when the cover plate 2 is covered on the bottom plate 1, the lower surface of the cover plate 2, the first step 12 and the first V-shaped groove 11 together form a filling area, and the cover plate 2, the end of the optical fiber 5 where the coating layer is stripped and the cladding layer is exposed, and the bottom plate 1 are connected and fixed through the curing glue filled in the filling area. Through set up first step on the bottom plate 1, can be convenient like this apron 2 lid is in during on the bottom plate 1, apron 2 with leave the clearance between the top of first V groove 11, conveniently pour into curing glue into to can control the volume of gluing, avoid glue overflow extremely in the second V groove 13 and lead to connecting rod 3 can't normally insert.
Alternatively, in one or more embodiments provided in the present invention, when the cover plate 2 is covered on the base plate 1, the exposed outer wall of the cladding of the optical fiber 5 is disposed in contact with the lower surface of the cover plate 2 and the two oblique inner walls of the first V-groove 11, respectively. Through with the cladding outer wall that exposes on the optic fibre 5 respectively with the lower surface of apron 2 and two slant inner wall contact settings of first V groove 11, can be right optic fibre 5 carries out more stable support, accurate butt joint when guaranteeing optic fibre 5 and external optical assembly to also be convenient for follow-up glue solidification of carrying on.
Optionally, in one or more embodiments provided by the present invention, the cover plate 2 is provided with third V grooves 21 corresponding to the second V grooves 13 in a one-to-one manner, when the cover plate 2 is covered on the bottom plate 1, the second V grooves 13 are aligned with the corresponding third V grooves 21 downward, and the connecting rods 3 are respectively disposed in contact with inner walls of the second V grooves 13 and the third V grooves 21. Through setting up the third V groove 21 on apron 2, can cooperate the first V groove 11 on the bottom plate 1 with the one end that exposes the cladding on optical fiber 5 better fixes, guarantees the uniformity of product.
In one or more embodiments provided by the present invention, the connecting rod 3 is made of kovar alloy. The kovar alloy has a relatively constant low or medium coefficient of expansion, which is close to that of glass, thereby achieving a matched seal.
In one or more embodiments of the present invention, the plug 4 is made of plastic.
The invention also provides a manufacturing method of the high-precision MT ferrule, which comprises the following steps:
step 11: processing a plurality of parallel equally-spaced second grooves on a workpiece which is processed in advance and used for manufacturing the bottom plate 1, and forming corresponding first steps 12 on the side wall edges of the second grooves, as shown in fig. 5;
step 12: continuously processing a plurality of first grooves which are parallel and equally spaced and are vertical to the second grooves on the workpiece, and forming corresponding second steps 14 on the side wall edges of the first grooves as shown in fig. 6;
step 13: a high-precision scribing machine is adopted to machine a group of first V-shaped grooves 11 on the bottom wall of the second groove on the bottom plate 1 along the width direction of the bottom wall, and second V-shaped grooves 13 are respectively machined on two sides of the first V-shaped grooves 11, as shown in FIG. 7;
step 14: cutting the workpiece between two adjacent first grooves and between two adjacent second grooves along preset cutting lines to obtain a plurality of single bottom plates 1, as shown in fig. 8;
step 15, stripping a coating layer from one end of the optical fiber 5 to expose a corresponding cladding, and extending one end of the optical fiber 5, which is exposed out of the cladding, into the first V-shaped groove 11 through a through hole 42 which is preset on the plug 4;
step 16: covering the cover plate 2 on the bottom plate 1, and injecting curing glue into the first V-shaped groove 11 to fix one end of the optical fiber 5 exposed out of the cladding in the first V-shaped groove 11, as shown in fig. 9;
and step 17: inserting one end of a connecting rod 3 into the corresponding second V-shaped groove 13, inserting the other end of the connecting rod into a preset jack 41 on the plug 4, and enabling the plug 4 to be in contact with the bottom plate 1;
step 18: respectively injecting curing glue into the second V-shaped groove 13 and the through hole 42 and the inserting hole 41 on the plug 4, so that the connecting rod 3 is respectively connected and fixed with the bottom plate 1, the cover plate 2 and the plug 4, and manufacturing is completed;
the bottom plate 1 and the cover plate 2 are made of glass.
The precision of the V-shaped groove accurately processed on the workpiece by adopting the high-precision scribing machine can reach 0.5 mu m, and the V-shaped groove processing method is suitable for mass production and greatly reduces the production cost.
The manufacturing method of the high-precision MT insertion core is convenient for batch production, the precision of the V-shaped groove can reach 0.5 mu m, the price of raw materials is low, the mature production process of the optical fiber 5 array adopted in partial working procedures is suitable for mass production, the price of the raw materials is low, the bottom plate 1 and the cover plate 2 are both made of glass materials, the coating is convenient (the coating is convenient if the coating is needed, and the coating can be omitted certainly), the cost is low, and when a high-power optical component is connected, because the glass is high-temperature resistant and has good stability, the high-precision MT insertion core is completely compatible with the existing MPO connector parts, the high-precision MT insertion core can be directly assembled into an MPO connector, or can.
In practice, the insertion hole 41 of the plug 4 is also provided in the through hole, so that when the connecting rod 3 is inserted in step 17, the connecting rod 3 can be inserted into the insertion hole 41 from the side of the plug 4 away from the bottom plate 1 and extend out toward one side of the bottom plate 1, and then extend into the second V-shaped groove 13, and the connecting rod 3 is selected to have a suitable length, so that when one end of the connecting rod is inserted into the second V-shaped groove 13, the other end of the connecting rod is just aligned with the side wall of the plug 4 away from the bottom plate 1. This greatly increases the ease of insertion of the connecting rod 3.
Optionally, in one or more embodiments provided by the present invention, an upper surface of the bottom plate 1 on a side of the second step 14 close to the plug 4 is fixedly connected to a corresponding portion on the optical fiber 5 by using a curing glue, and a portion of the metal rod 3 on a side of the second step 14 close to the plug 4 and corresponding to the bottom plate 1 is fixed by using the curing glue. Through will on the bottom plate 1 the second step 14 is close to the upper surface of end cap 4 one side is connected fixedly through curing glue with the corresponding position on the optic fibre 5, can with the position that optic fibre 5 corresponds with the bottom plate 1 is fixed, and is right like this optic fibre 5 carries out better fixed and protection, through lie in on the metal pole 3 the second step 14 is close to end cap 4 one side with the position that corresponds on the bottom plate 1 is fixed through curing glue, can guarantee base 1 with end cap 4 passes through metal pole 3 is firmly connected fixedly, avoids deviating from in the use.
In practice, in order to ensure the bonding firmness and avoid the overflow of glue, a small amount of glue needs to be poured around the metal rod 3 and in the through hole of the plug 4, so that the glue does not overflow the surface and the side of the cover plate 2 and the side of the plug 4, and thus the manufacture of the MT ferrule and the assembly of the optical fiber are completed.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A high accuracy MT lock pin which characterized in that: include bottom plate (1) made by the glass material, with bottom plate (1) phase-match and apron (2) made by the glass material, even number root connecting rod (3) and end cap (4), apron (2) lid is located on bottom plate (1), end cap (4) are adjacent to be set up the one end of bottom plate (1), the upper surface of bottom plate (1) is kept away from the one end of end cap (4) is equipped with a set of first V groove (11) that are used for inserting optic fibre (5), the upper surface of bottom plate (1) is located the both sides in first V groove (11) and is equipped with respectively and is used for connecting rod (3) male second V groove (13), be close to on end cap (4) be equipped with on the end wall of bottom plate one end with second V groove (13) one-to-one and with connecting rod (3) assorted jack (41), just on end cap (4) with first V groove (11) correspond position department and be equipped with through-hole (42) that are used for optic fibre (5) to pass ) The coating is peeled off on optic fibre (5) and the one end of cladding is followed end cap (4) are kept away from the one end of bottom plate (1) stretches into and passes insert behind through-hole (42) in first V groove (11), the one end of connecting rod (3) is inserted in the jack that corresponds on end cap (4), the other end stretches into correspondingly in second V groove (13), and work as apron (2) lid is located when on bottom plate (1), apron (2) can be fixed in optic fibre (5) and connecting rod (3) respectively correspondence in first V groove (11) and second V groove (13).
2. The high-precision MT ferrule according to claim 1, characterized in that: one end, close to the plug (4), of the bottom plate (1) is lower than the other end, and a second step (14) is formed in the middle of the upper surface of the bottom plate (1).
3. The high-precision MT ferrule according to claim 2, characterized in that: the upper surface of one side, close to the plug (4), of the second step (14) on the bottom plate (1) is fixedly connected with the corresponding part on the optical fiber (5) through curing glue.
4. The high-precision MT ferrule according to claim 1, characterized in that: the upper surface of the bottom plate (1) is positioned at two sides of the first V-shaped groove (11) and is respectively recessed downwards to form a first step (12), the upper surface of one side of the first step (12) close to the first V-shaped groove (11) is arranged at the same height as the upper end of the first V-shaped groove (11), one side of the first step (12) close to the first V-shaped groove (11) and the first V-shaped groove (11) are filled with curing glue, when the cover plate (2) is covered on the bottom plate (1), the lower surface of the cover plate (2), the first step (12) and the first V-shaped groove (11) jointly form a filling area, the cover plate (2), one end of the optical fiber (5) which is stripped of the coating layer and exposed out of the cladding layer and the bottom plate (1) are fixedly connected through curing glue filled in the filling area.
5. The high-precision MT ferrule according to any one of claims 1 to 4, wherein: when the cover plate (2) is covered on the bottom plate (1), the outer wall of the cladding layer exposed by the optical fiber (5) is respectively in contact with the lower surface of the cover plate (2) and the two inclined inner walls of the first V-shaped groove (11).
6. The high-precision MT ferrule according to any one of claims 1 to 4, wherein: be equipped with on apron (2) with third V groove (21) of second V groove (13) one-to-one, work as apron (2) lid is located when on bottom plate (1), state second V groove (13) and correspond third V groove (21) align downwards, just connecting rod (3) respectively with the inner wall contact setting in second V groove (13) and third V groove (21).
7. The high-precision MT ferrule according to any one of claims 1 to 4, wherein: the connecting rod (3) is made of kovar alloy.
8. A method for manufacturing a high-precision MT (multiple terminal) ferrule is characterized by comprising the following steps:
processing a workpiece which is processed in advance and used for manufacturing the bottom plate (1) to obtain a single bottom plate (1);
a high-precision scribing machine is adopted to machine a group of first V-shaped grooves (11) on the bottom wall of the second groove on the bottom plate (1) along the width direction of the bottom wall, and second V-shaped grooves (13) are respectively machined on two sides of the first V-shaped grooves (11);
stripping a coating layer from one end of the optical fiber (5) to expose a corresponding cladding, and enabling one end, exposed out of the cladding, of the optical fiber (5) to penetrate through a through hole (42) formed in the plug (4) in advance and extend into the first V-shaped groove (11);
covering a cover plate (2) on the bottom plate (1), and injecting curing glue into the first V-shaped groove (11) to fix one end, exposed out of the cladding, of the optical fiber (5) in the first V-shaped groove (11);
inserting one end of a connecting rod (3) into the corresponding second V-shaped groove (13), inserting the other end of the connecting rod into a pre-arranged jack (41) on the plug (4), enabling the plug (4) to be in contact with the bottom plate (1), and injecting curing glue into the second V-shaped groove (13) and the through hole (42) and the jack (41) on the plug (4) respectively, so that the connecting rod (3) is connected and fixed with the bottom plate (1), the cover plate (2) and the plug (4) respectively, and manufacturing is completed;
the bottom plate (1) and the cover plate (2) are made of glass.
9. The method for manufacturing the high-precision MT ferrule according to claim 8, wherein the method comprises the following steps: the method for machining the workpiece which is machined in advance and used for manufacturing the bottom plate (1) specifically comprises the following steps:
processing a plurality of parallel equally-spaced second grooves on a workpiece which is processed in advance and used for manufacturing a bottom plate (1), and forming corresponding first steps (12) at the side wall edges of the second grooves;
continuously processing a plurality of first grooves which are parallel and equally spaced and are vertical to the second grooves on the workpiece, and forming corresponding second steps (14) on the side wall edges of the first grooves;
and cutting the workpiece between two adjacent first grooves and between two adjacent second grooves along preset cutting lines to obtain a plurality of single bottom plates (1).
10. The method for manufacturing the high-precision MT ferrule according to claim 9, wherein the method comprises the following steps: the optical fiber connector is characterized in that the upper surface of the bottom plate (1) on one side of the plug (4) close to the second step (14) is fixedly connected with the corresponding part of the optical fiber (5) through curing glue, and the metal rod (3) is located on the position, close to the second step (14), of one side of the plug (4) and the corresponding part of the bottom plate (1) are fixed through curing glue.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010434427.8A CN111552035A (en) | 2020-05-21 | 2020-05-21 | High-precision MT (MT) ferrule and manufacturing method thereof |
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| CN202010434427.8A CN111552035A (en) | 2020-05-21 | 2020-05-21 | High-precision MT (MT) ferrule and manufacturing method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113900194A (en) * | 2021-12-08 | 2022-01-07 | 武汉驿路通科技股份有限公司 | Assembling tool and assembling method for optical fiber and MT (multi-terminal) ferrule |
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Application publication date: 20200818 |