CN112014926A - Positioning structure of optical fiber, tail fiber and manufacturing method of tail fiber - Google Patents
Positioning structure of optical fiber, tail fiber and manufacturing method of tail fiber Download PDFInfo
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- CN112014926A CN112014926A CN202010872746.7A CN202010872746A CN112014926A CN 112014926 A CN112014926 A CN 112014926A CN 202010872746 A CN202010872746 A CN 202010872746A CN 112014926 A CN112014926 A CN 112014926A
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- 239000013307 optical fiber Substances 0.000 title claims abstract description 75
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 15
- 239000011248 coating agent Substances 0.000 claims abstract description 95
- 238000000576 coating method Methods 0.000 claims abstract description 95
- 239000003292 glue Substances 0.000 claims abstract description 36
- 238000010168 coupling process Methods 0.000 claims description 35
- 230000008878 coupling Effects 0.000 claims description 34
- 238000005859 coupling reaction Methods 0.000 claims description 34
- 238000009434 installation Methods 0.000 claims description 12
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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
- G02B6/25—Preparing the ends of light guides for coupling, e.g. cutting
-
- 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
- G02B6/241—Light guide terminations
-
- 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
- G02B6/3628—Mechanical coupling means for mounting fibres to supporting carriers
- G02B6/3632—Mechanical coupling means for mounting fibres to supporting carriers characterised by the cross-sectional shape of the mechanical coupling means
- G02B6/3636—Mechanical coupling means for mounting fibres to supporting carriers characterised by the cross-sectional shape of the mechanical coupling means the mechanical coupling means being grooves
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Coupling Of Light Guides (AREA)
Abstract
The invention relates to the technical field of optical elements and discloses a positioning structure of an optical fiber, a tail fiber and a manufacturing method thereof, wherein the positioning structure comprises a first positioning block and a second positioning block, a first channel for placing a fiber core section is formed on the end surface of the first positioning block, and a second channel for placing a coating section is formed on the end surface of the second positioning block; set up first locating piece and second locating piece, be formed with the first channel of placeeing the fibre core section on the terminal surface of first locating piece, be formed with the second channel of placeeing the coating section on the terminal surface of second locating piece, the fibre core section is placed and can directly bond with glue and first locating piece in first channel, the coating section is placed and also can directly bond with glue and second locating piece in the second channel to can make the tail optical fiber more conveniently.
Description
Technical Field
The invention relates to the technical field of optical elements, in particular to a positioning structure of an optical fiber, a tail fiber and a manufacturing method of the tail fiber.
Background
In the process of optical fiber coupling, in order to achieve the purpose of reducing reflection, an inclined plane is required to be manufactured on the end face of an optical fiber, namely the end face of the optical fiber, the optical fiber also needs to be moved in the coupling process, and in order to prevent the optical fiber from being damaged in the inclined plane processing or assembling process, a base needs to be arranged on the tail fiber, so that the stress of a fiber core is reduced.
At present, a tail fiber adopts a capillary as a raw material, an optical fiber is inserted into the capillary, the relative position of the capillary and the optical fiber is fixed by glue, and then the end face of the optical fiber is obtained by grinding the capillary or a flat position required by assembly, wherein the capillary material is ceramic or glass.
In the prior art, as shown in fig. 1 and 2, after an optical fiber 23 needs to be inserted into a capillary 22, the capillary 22 and the optical fiber 23 are ground, wherein the process of inserting the optical fiber 23 into the capillary 22 and fixing the optical fiber by using glue is troublesome, the required precision is high, and the speed is slow when the capillary 22 needs to be ground, which results in an excessively high manufacturing cost of the pigtail; and when the existing tail fiber structure is used in a coupling mode, the bonding needs to follow the coupling moving position, so that the precision requirement of optical assembly parts is high easily, or the thickness of a glue layer for fixing the optical fiber is large, and the overall reliability of the optical fiber is reduced due to the large thickness of the glue layer.
Disclosure of Invention
The invention aims to provide a positioning structure of an optical fiber, a tail fiber and a manufacturing method thereof, and aims to solve the problems of inconvenient manufacture of the tail fiber, overhigh cost, low accuracy and low efficiency.
The invention is realized in such a way that the optical fiber comprises a fiber core section and a coating section, and comprises a first positioning block and a second positioning block, wherein a first channel for placing the fiber core section is formed on the end surface of the first positioning block, and a second channel for placing the coating section is formed on the end surface of the second positioning block.
Further, the first channel is sunken to be formed on the end face of the first positioning block, and the second channel is sunken to be formed on the end face of the second positioning block.
Furthermore, the first slot channel extends on the end face of the first positioning block, and the second slot channel extends on the end face of the second positioning block.
Further, the first channel has a channel width greater than the outer diameter of the core segment and the second channel has a channel width greater than the outer diameter of the coating segment.
Further, the groove depth of the first groove channel is larger than the groove width of the first groove channel, and the groove depth of the second groove channel is larger than the groove depth of the first groove channel.
Further, the first channel is provided with a left inner side face, a right inner side face and a groove bottom to form a first channel; the second channel has left medial surface, right medial surface and tank bottom, forms the second passageway.
Further, the first channel and the second channel are in collinear communication in space when merged.
A pigtail structure comprising an optical fiber and a positioning structure as described above, the optical fiber comprising a core section and a coating section, the core section being disposed in the first channel and the coating section being disposed in the second channel.
Further, a glue layer is arranged between the fiber core section and the inner side wall of the first channel, and a glue layer is arranged between the coating section and the inner side wall of the second channel.
A method of making a pigtail as defined above comprising an optical fibre mounting base and a coupling device, comprising the steps of:
step S10, using the optical fiber installation base as the coupling height, the coupling device couples the fiber core section and the coating section at the coupling height;
step S20, lifting the fiber core section and the coating section;
step S30, fixing the first positioning block and the second positioning block with the optical fiber installation base respectively;
step S40, lowering the fiber core section and the coating section to a coupling height;
and step S50, bonding the fiber core section with the first positioning block, bonding the coating section with the second positioning block, and then curing to form the tail fiber.
A method for manufacturing a tail fiber comprises the following specific steps:
step S10, the coupling device clamps the coating section close to the fiber core end surface of the fiber core section, records the current coupling position after the coupling is completed, and then lifts the fiber core section and the coating section;
step S20, lifting the fiber core section and the coating section;
step S30, fixing the first positioning block and the second positioning block with the optical fiber installation base through glue;
step S40, lowering the fiber core section and the coating section to the coupling height, and finely adjusting the positions of the first positioning block and the second positioning block to finely adjust the placement positions of the fiber core section and the coating section;
and step S50, the core segment is bonded with the first positioning block, the coating segment is bonded with the second positioning block, and then the tail fiber is formed by solidification.
Compared with the prior art, the positioning structure of the optical fiber, the tail fiber and the manufacturing method thereof provided by the invention are provided with the first positioning block and the second positioning block, the end surface of the first positioning block is provided with the first channel for placing the fiber core section, the end surface of the second positioning block is provided with the second channel for placing the coating section, the fiber core section is placed in the first channel and can be directly bonded with the first positioning block by glue, and the coating section is placed in the second channel and can also be directly bonded with the second positioning block by glue, so that the tail fiber can be manufactured more conveniently; in the prior art, the optical fiber is required to be inserted into the capillary and then ground, and the optical fiber end face of the fiber core section can be directly ground only by placing the fiber core section on the first channel and placing the coating section on the second channel without using a machine for long-time grinding, so that the cost is greatly reduced, and the manufacturing efficiency of the tail fiber is improved; in addition, in the prior art, the optical fiber needs to be aligned after being inserted into the capillary, and the first positioning block and the second positioning block provided by the invention can be easily aligned through the alignment channel, so that the fiber core section and the coating section are conveniently placed down, and the accuracy is higher; the problems of inconvenience, high cost, low precision and low efficiency.
Drawings
FIG. 1 is a schematic top view of the prior art;
FIG. 2 is a schematic cross-sectional view of the prior art;
FIG. 3 is a perspective view of a positioning structure of an optical fiber according to the present invention;
FIG. 4 is a schematic left side view of a pigtail provided by the present invention;
FIG. 5 is a schematic partial cross-sectional view of a pigtail provided by the present invention;
FIG. 6 is a schematic top view of a pigtail provided by the present invention;
FIG. 7 is a schematic left side view of a pigtail provided by the present invention;
FIG. 8 is a schematic top view of a pigtail provided by the present invention;
FIG. 9 is a schematic left side view of a pigtail provided by the present invention;
FIG. 10 is a schematic rear view of an optical fiber positioning structure according to the present invention;
FIG. 11 is a schematic top view of a pigtail provided by the present invention;
FIG. 12 is a schematic cross-sectional view of a pigtail provided by the present invention;
FIG. 13 is a schematic step diagram of a method for manufacturing a pigtail according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The following describes the implementation of the present invention in detail with reference to specific embodiments.
The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not intended to indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limiting the present patent, and the specific meaning of the terms may be understood by those skilled in the art according to specific circumstances.
Fig. 3 shows a preferred embodiment of a positioning structure of an optical fiber according to the present invention.
The optical fiber comprises a fiber core section 15 and a coating section 16, the positioning structure of the optical fiber comprises a first positioning block 11 and a second positioning block 13, and the first positioning block 11 and the second positioning block 13 are placed on an optical fiber mounting base 21; the first positioning block 11 is formed with a first groove 12, the second positioning block 13 is formed with a second groove 14, the core section 15 is placed in the first groove 12, and the coating section 16 is placed in the second groove 14.
The positioning structure of the optical fiber provided by the embodiment is used for positioning, bearing or limiting the optical fiber and forming a pigtail with the optical fiber, and can also be used in other scenes needing optical fiber coupling.
Specifically, the optical fiber includes a core segment 15 and a coating segment 16; the core segment 15 is formed of a bare fiber without a protective layer covering, and the coating segment 16 is formed of a bare fiber portion with a protective layer covering; specifically, the protective layer is made of a colloid material.
Preferably, the positioning structure of the optical fiber comprises a first positioning block 11 and a second positioning block 13, wherein the first positioning block 11 is used for positioning, placing or limiting the fiber core section 15, and the second positioning block 13 is also used for positioning, placing or limiting the coating section 16; in the adjustable range, the fiber core segment 15 may also be partially disposed on the second positioning block 13, but at least a portion of the fiber core segment 15 may be disposed on the first positioning block 11, or at least a portion of the coating segment 16 may be disposed on the second positioning block 13, and the first positioning block 11 and the second positioning block 13 are provided, so as to substantially ensure that the fiber core segment 15 is positioned by the first positioning block 11, and the coating segment 16 is positioned by the second positioning block 13, so as to ensure the stability of the two, in the subsequent processing or using process, it may be ensured that the first positioning block 11 stabilizes the fiber core segment 15, and the second positioning block 13 stabilizes the coating segment 16.
Specifically, the term "positioning" in the first positioning block 11 and the second positioning block 13 is used for name differentiation, and the specific functions of the first positioning block 11 and the second positioning block 13 are explained according to the specification or the drawings of the specification, which should not be construed as limitations of the present patent, and those skilled in the art may use different naming specifications according to specific situations.
Furthermore, the first and second ordinal terms noted in the present invention do not limit the sequence of the objects, but only serve as identifying terms, and the specific object arrangement position and spatial relationship are defined by the orientation in the text.
The first positioning block 11 and the second positioning block 13 may be rectangular parallelepiped or trapezoidal, and the shape is not limited here, and the first positioning block 11 and the second positioning block 13 only need to meet the functional requirement of stably placing the core segment 15 or the coating segment 16.
As shown in fig. 4, a preferred embodiment of the first positioning block 11 and the second positioning block 13 provided by the present invention is as follows:
the first positioning block 11 and the second positioning block 13 are in a separated or spliced state, when the first positioning block 11 and the second positioning block 13 need to be spliced, the first positioning block 11 and the second positioning block 13 can be finely adjusted in the splicing process, and the allowance degree of the placing modes of the fiber core section 15 and the coating section 16 is improved; under the condition that the first positioning block 11 is separated from the second positioning block 13, the cost for integrally forming and processing the first positioning block 11 and the second positioning block 13 can be saved; the first positioning block 11 and the second positioning block 13 can be stored respectively, and the storage stability is improved because the volume of the first positioning block 11 and the volume of the second positioning block 13 are small relative to the volume of the first positioning block and the second positioning block which are integrally formed.
Specifically, the first positioning block 11 and the second positioning block 13 are bonded to the optical fiber installation base 21 by glue 17, so that the first positioning block 11 and the second positioning block 13 are relatively fixed.
Preferably, the first groove 12 is formed by sinking and arranged on the end face of the first positioning block 11, the second groove 14 is also formed by sinking and arranged on the end face of the second positioning block 13, when the fiber core section 15 is put down to the first groove 12, and the coating section 16 is put down to the second groove 14, the fiber core section 15 is embedded into the end face of the first positioning block 11, so that the glue is convenient to coat; the coating section 16 can also be embedded into the end face of the second positioning block 13, so that the coating is convenient; the core segment 15 and the coating segment 16 can be easily fixed when filling the first trench 12 and the second trench 14 with glue 17.
Further, the first slot 12 extends on the end face of the first positioning block 11 and is horizontally arranged; the second slot 14 extends from the end face of the second positioning block 13 and is horizontally disposed.
The present invention also provides another embodiment of the first channel 12 and the second channel 14:
the first channel 12 extends on the end face of the first positioning block 11, but is inclined along the vertical plane; the second slot 14 extends on the end face of the second positioning block 13 and is arranged along the vertical plane in an inclined manner, so that the processing of the situation that the positions of the optical fiber input port and the optical fiber output port are not on the same horizontal plane is met. (effects, similar to satisfy that the positions of the input port and the output port of the optical fiber are not processed on the same horizontal plane)
As shown in fig. 5, another embodiment of the first positioning block 11 and the second positioning block 13 provided by the present invention is as follows:
the end face of the first positioning block 11 facing the second positioning block 13 is formed with a bump 19, the end face of the second positioning block 13 facing the first positioning block 11 is formed with a groove, and when the first positioning block 11 and the second positioning block 13 are spliced, the first positioning block 11 and the second positioning block 13 are embedded with the bump 19 through the groove.
Furthermore, a groove may be formed on an end surface of the first positioning block 11 facing the second positioning block 13, a protrusion 19 may be formed on an end surface of the second positioning block 13 facing the first positioning block 11, and when the first positioning block 11 and the second positioning block 13 are combined, the first positioning block 11 and the second positioning block 13 are engaged with each other through the groove and the protrusion 19.
Specifically, a first groove 12 for placing the core segment 15 is formed on the end surface of the first positioning block 11, a second groove 14 for placing the coating segment 16 is formed on the end surface of the second positioning block 13, and the first groove 12 may be a straight groove or a semi-curved groove with a partial curve.
As shown in fig. 6, in another preferred embodiment of the first slot 12 and the second slot 14 provided in the present invention, when the first slot 12 is a semi-curved slot, the first slot 12 includes a straight slot and a curved slot, the straight slot and the curved slot are connected in parallel to form the first slot 12, and an end of the straight slot facing away from the curved slot is spatially connected in parallel to an end of the second slot 14 facing the straight slot.
Specifically, when the first channel 12 is a straight channel, a connecting line between the head end and the tail end of the first channel 12 is a straight line, and the connecting line between the head end and the tail end of the second channel 14 is located on the same straight line, so that the shape of the channel formed between the head end and the tail end of the first channel 12 may be a wave shape, or any other channel shape capable of placing the core segment 15, and the shape is not limited herein. Further, the second channel 14 is a straight channel, the line between the head and the tail of the second channel 14 is a straight line, and the line connecting the head and the tail of the first channel 12 is located on the same straight line, so that the fiber core section 15 is connected with the coating section 16 and is simultaneously lowered into the first channel 12 and the second channel 14.
As shown in fig. 7, another embodiment of the first channel 12 and the second channel 14 provided by the present invention is:
a first convex layer 20 is formed on the end surface of the first positioning block 11, and a first groove channel 12 is formed on the first convex layer 20; a second convex layer 20 is formed on the end surface of the second positioning block 13, and a second groove 14 is formed on the second convex layer 20.
Referring to FIG. 8, a preferred embodiment of the present invention is provided to match the positioning structure of the optical fiber with the core segment 15 and the coating segment 16.
The first channel 12 has a channel width greater than the outer diameter of the core segment 15 and the second channel 14 has a channel width greater than the outer diameter of the coating segment 16, and when the core segment 15 is lowered into the first channel 12, glue 17 can pass or soak through the gap between the first channel 12 and the core segment 15; when the coating section 16 is lowered into the second channel 14, glue 17 may pass or soak through the gap between the second channel 14 and the coating section 16.
Further, the slot width of the second slot 14 is greater than the slot width of the first slot 12, and the difference in slot widths of the first slot 12 and the second slot 14 may be used to limit movement of the core section 15 or the coating section 16.
Referring to fig. 4 to 8, a preferred embodiment of the first slot 12 and the second slot 14 provided in the present invention is shown:
the first channel 12 and the second channel 14 are in collinear communication in space when merged, and when the core segment 15 is placed in the first channel 12, the coating segment 16 is also in collinear communication with the core segment 15, which improves the stability of the core segment 15 and the coating segment 16.
Specifically, the combination of the first slot track 12 and the second slot track 14 is not limited to the combination of the first slot track 12 and the second slot track 14 achieved when the first positioning block 11 is abutted to the second positioning block 13, but also includes the combination of the first slot track 12 and the second slot track 14 in the space when the first positioning block 11 and the second positioning block 13 are arranged in sequence and connected through the connecting block 18.
More specifically, as shown in fig. 9, another embodiment of the first channel 12 and the second channel 14 is provided for the present invention.
The first positioning block 11 and the second positioning block 13 are spatially disposed in a front-back manner and connected by at least one connecting block 18, and at this time, the first channel 12 and the second channel 14 are in a combined state, and at this time, the coupling of the core segment 15 and the coating segment 16 can also be realized.
Referring to fig. 3 to 10, a preferred embodiment of the first slot 12 and the second slot 14 provided in the present invention is shown:
the groove depth of the first channel 12 is larger than the groove width of the first channel 12, the groove depth of the second channel 14 is larger than the groove depth of the first channel 12, the fiber core section 15 can move up and down in the first channel 12, and the coating section 16 can move up and down in the second channel 14, so that a better coupling fine adjustment effect is provided, and the up and down adjustment allowance of the fiber core section 15 and the coating section 16 on the vertical plane is provided.
Specifically, when the core segment 15 moves up and down in the first channel 12, the coating segment 16 also moves up and down in the second channel 14, and therefore, the groove depth of the second channel 14 needs to be larger than that of the first channel 12, so as to prevent the glue layer of the coating segment 16 from interfering with the inner side wall of the second channel 14, resulting in the inclined arrangement of the core segment 15 and the coating segment 16 in the vertical plane, and reducing the usability of the formed pigtail assembly.
Further, the first channel 12 has a left inner side, a right inner side and a groove bottom to form a first channel, and the second channel 14 also has a left inner side, a right inner side and a groove bottom to form a second channel, the core section 15 being adjustable up and down in the first channel, and the coating section 16 being adjustable up and down in the second channel.
Preferably, the cross section of the first channel 12 is rectangular, i.e. the vertical distance between the left inner side and the right inner side of the first channel 12 is constant; the cross-section of the second channel 14 is rectangular, i.e. the vertical distance between the left and right inner side faces of the second channel 14 is constant.
As shown in fig. 10, another embodiment of the first channel 12 and the second channel 14 is provided for the present invention:
the cross section of the first channel 12 is inverted trapezoid, that is, the interval between the left inner side wall and the right inner side wall of the first channel 12 is gradually reduced along the extending direction from the notch to the bottom of the groove; the cross section of the second channel 14 is also inverted trapezoid, that is, the interval between the left inner side wall and the right inner side wall of the second channel 14 is gradually reduced along the extending direction from the notch to the groove bottom.
As shown in fig. 11 and 12, a preferred embodiment of a pigtail structure provided by the present invention is as follows:
a pigtail structure comprising an optical fiber and a positioning structure as described above, the optical fiber comprising a core section 15 and a coating section 16, the core section 15 being disposed in a first channel 12 and the coating section 16 being disposed in a second channel 14; the core segment 15 may be bonded to the first channel 12 by glue 17 and the coating segment 16 may be bonded to the second channel 14 by glue 17, thereby achieving relative fixation of the core segment 15 to the coating segment 16.
The core segment 15 is formed of bare optical fibers without an outer layer of glue covering, while the coating segment 16 refers to the portion of the optical fibers covered by the outer layer of glue.
Specifically, a glue layer is provided between the core segment 15 and the inner side wall of the first channel 12, and a glue layer is provided between the coating segment 16 and the inner side wall of the second channel 14.
Specifically, the first channel 12 has a left inner side surface and a right inner side surface, a passage through which the liquid passes or is soaked is formed between the left tangential surface of the fiber core segment 15 and the left inner side surface of the first channel 12, and a passage through which the liquid passes or is soaked is formed between the right tangential surface of the fiber core segment 15 and the right inner side surface of the first channel 12.
Specifically, the second channel 14 has a left inner side and a right inner side, a passage through which the liquid passes or is soaked is formed between the left tangential surface of the coating section 16 and the left inner side of the second channel 14, and a passage through which the liquid passes or is soaked is formed between the right tangential surface of the coating section 16 and the right inner side of the second channel 14.
Specifically, the liquid is glue 17, the core segment 15 may be fixed to the first positioning block 11 by the glue 17, and the coating segment 16 may be fixed to the second positioning block 13 by the glue 17, so as to couple the core segment 15 and the coating segment 16.
More specifically, the connecting parts of the left inner side surface and the right inner side surface of the first channel 12 and the groove bottom are provided with inner chamfers; the connecting parts of the left inner side surface and the right inner side surface of the second groove channel 14 and the groove bottom are provided with inner chamfers.
As shown in fig. 13, in order to provide a method for manufacturing a pigtail according to the present invention, the pigtail as described above is manufactured, and includes an optical fiber mounting base 21 and a coupling device, wherein the method includes the following steps:
step S10, coupling the core segment 15 and the coating segment 16 at a coupling height by the coupling device with the optical fiber mounting base 21 as the coupling height;
step S20, lifting the core segment 15 and the coating segment 16;
step S30, fixing the first positioning block 11 and the second positioning block 13 to the optical fiber installation base 21, respectively;
step S40, lowering the core segment 15 and the coating segment 16 to a coupling height;
in step S50, the core segment 15 is bonded to the first positioning block 11, and the coating segment 16 is bonded to the second positioning block 13, and then cured to form the pigtail.
Specifically, the coupling device clamps the end face of the fiber core of the coating section 16 close to the fiber core section 15, records the current coupling position after coupling is completed, then lifts the fiber core section 15 and the coating section 16, fixes the first positioning block 11, the second positioning block 13 and the optical fiber installation base 21 through glue 17, lowers the fiber core section 15 and the coating section 16 to the coupling height, finely adjusts the positions of the first positioning block 11 and the second positioning block 13 so as to finely adjust the placement positions of the fiber core section 15 and the coating section 16, bonds the fiber core section 15 and the first positioning block 11 together by the fiber core section 15, bonds the coating section 16 and the second positioning block 13 together, and then forms the tail fiber through solidification.
Further, when the first positioning block 11 and the second positioning block 13 need to be placed on the optical fiber installation base 21 at the same time and the first positioning block 11 and the second positioning block 13 need to be separated, the first positioning block 11 and the second positioning block 13 need to be adhered or matched by using glue 17 or other adhesive substances or matching structures on the first positioning block 11 and the second positioning block 13.
Further, when the first positioning block 11 and the second positioning block 13 need to be successively placed on the optical fiber installation base 21, the first positioning block 11 and the second positioning block 13 need to be finely adjusted, so that the first slot 12 on the first positioning block 11 and the second slot 14 on the second positioning block 13 are collinear.
Alternatively, when the first positioning block 11 and the second positioning block 13 are integrally formed, the first positioning block 11 and the second positioning block 13 can be placed on the optical fiber installation base 21 at the same time.
Further, when the first positioning block 11 and the second positioning block 13 need to be bonded to the optical fiber mounting base 21, a glue may be applied to the optical fiber mounting base 21, or a glue may be applied to the first positioning block 11 and the second positioning block 13, and here, it is preferable to apply a glue to the optical fiber mounting base 21.
Further, when the fiber core segment 15 and the coating segment 16 are placed in the first slot 12 and the second slot 14 of the first positioning block 11 and the second positioning block 13, that is, when the fiber core segment 15 is placed in the first slot 12 and the coating segment 16 is placed in the second slot 14:
when the core segment 15 touches the first slot 12 or the coating segment 16 touches the second slot 14, the positions of the first positioning block 11 and the second positioning block 13 are adjusted, so that the core segment 15 or the coating segment 16 is not obstructed.
Specifically, the first positioning block 11 and the second positioning block 13 are respectively provided with a first groove 12 and a second groove 14 formed by a transparent sheet and a dicing saw.
Further, the material of the first positioning block 11 and the second positioning block 13 is generally a lithium niobate material or a silicon material, or other materials having expansion coefficients matching those of the optical waveguides, such as lithium niobate, silicon, quartz, etc., as the substrate material for fixing the core segment 15 or the coating segment 16, and the material of the first positioning block 11 and the second positioning block 13 is preferably glass for optical parts in the present invention.
Also, the adhesive or glue 17 used to bond the core segment 15 or coating segment 16 mentioned in the above text is typically an epoxy glue 17 or a rubber-like glue 17; the coating material of the optical fiber is generally a mixture of silicone rubber and epoxy resin.
The invention also provides an optical module, which uses the tail fiber as described above, and specifically consists of an optoelectronic device, a functional circuit, an optical interface and the like, wherein the optoelectronic device comprises a transmitting part and a receiving part, and the tail fiber is used for connecting the optical module and other optical modules.
The invention also provides an optical transceiver, which uses the tail fiber, in particular, the optical transceiver is an Ethernet transmission medium conversion unit which exchanges short-distance twisted pair electrical signals and long-distance optical signals, and the tail fiber provides the function of information transmission.
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 and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (11)
1. The positioning structure of the optical fiber comprises a fiber core section and a coating section and is characterized by comprising a first positioning block and a second positioning block, wherein a first channel for placing the fiber core section is formed on the end face of the first positioning block, and a second channel for placing the coating section is formed on the end face of the second positioning block.
2. The optical fiber positioning structure of claim 1, wherein the first groove is formed on an end face of the first positioning block, and the second groove is formed on an end face of the second positioning block.
3. The optical fiber positioning structure of claim 2, wherein the first channel extends from the end face of the first positioning block, and the second channel extends from the end face of the second positioning block.
4. An optical fiber positioning structure as claimed in any one of claims 1 to 3, wherein the groove width of said first groove is larger than the outer diameter of said core segment, and the groove width of said second groove is larger than the outer diameter of said coating segment.
5. An optical fiber positioning structure as claimed in any one of claims 1 to 3, wherein the groove depth of said first groove is larger than the groove width of said first groove, and the groove depth of said second groove is larger than the groove depth of said first groove.
6. The positioning structure for optical fibers according to any one of claims 1 to 3, wherein the first channel has a left inner side, a right inner side, and a groove bottom, forming a first passage; the second channel has left medial surface, right medial surface and tank bottom, forms the second passageway.
7. An optical fiber positioning structure as claimed in any one of claims 1 to 3, wherein said first and second channels are in collinear communication in space when brought together.
8. A pigtail structure comprising an optical fiber and a positioning structure according to any of claims 1 to 7, wherein the optical fiber comprises a core section and a coating section, wherein the core section is placed in the first channel and the coating section is placed in the second channel.
9. The pigtail structure of claim 8, wherein a glue layer is provided between the core section and the inner side wall of the first channel, and a glue layer is provided between the coating section and the inner side wall of the second channel.
10. A method of making a pigtail according to claim 8 or 9 comprising a fibre mounting base and coupling means, wherein the steps of:
step S10, using the optical fiber installation base as the coupling height, the coupling device couples the fiber core section and the coating section at the coupling height;
step S20, lifting the fiber core section and the coating section;
step S30, fixing the first positioning block and the second positioning block with the optical fiber installation base respectively;
step S40, lowering the fiber core section and the coating section to a coupling height;
and step S50, bonding the fiber core section with the first positioning block, bonding the coating section with the second positioning block, and then curing to form the tail fiber.
11. The method for manufacturing the tail fiber according to claim 10, comprising the following specific steps:
step S10, the coupling device clamps the coating section close to the fiber core end surface of the fiber core section, records the current coupling position after the coupling is completed, and then lifts the fiber core section and the coating section;
step S20, lifting the fiber core section and the coating section;
step S30, fixing the first positioning block and the second positioning block with the optical fiber installation base through glue;
step S40, lowering the fiber core section and the coating section to the coupling height, and finely adjusting the positions of the first positioning block and the second positioning block to finely adjust the placement positions of the fiber core section and the coating section;
and step S50, the core segment is bonded with the first positioning block, the coating segment is bonded with the second positioning block, and then the tail fiber is formed by solidification.
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