CN207752175U - A kind of side emitting optical fiber with spiral grooves - Google Patents
A kind of side emitting optical fiber with spiral grooves Download PDFInfo
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- CN207752175U CN207752175U CN201820173846.9U CN201820173846U CN207752175U CN 207752175 U CN207752175 U CN 207752175U CN 201820173846 U CN201820173846 U CN 201820173846U CN 207752175 U CN207752175 U CN 207752175U
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- spiral grooves
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Abstract
The utility model provides a kind of side emitting optical fiber with spiral grooves, the side emitting optical fiber is wrapped up in covering by cylindrical core excircle and is formed, the covering is equipped with the spiral grooves goed deep into inside the covering, the inner width of the spiral grooves is less than its external width, i.e., narrow outer width in spiral grooves.Spiral grooves described in the utility model are located at fibre cladding surface and go deep into inside covering, in a spiral manner wound fiber axis, repetition trench cross section, and spiral grooves section shows as the shape of interior narrow outer width；Side emitting optical fiber described in the utility model with it is existing at fibre after compared with local flow improvement method, since spiral grooves are annularly distributed in optical fiber surface, caused lateral emitting is evenly distributed, luminous efficiency is high, design is good；Spiral grooves described in the utility model can also generate effect of contraction to the beam direction that side is emitted.
Description
Technical field
The utility model is related to special fiber technical field more particularly to a kind of side emitting optical fibers with spiral grooves.
Background technology
Side emitting optical fiber can provide illumination in the high special occasions of inflammable and explosive, insulating requirements, which has exhausted
Edge, flexibility, waterproof, distribution, the advantages that corrosion-resistant, stability is high, safety and environmental protection.The type optical fiber is also widely used for waistcloth
The individual decorations such as wall, stage lighting, automobile decoration illuminate occasion.
The production method that side emitting optical fiber continues to use telecommunication optical fiber first prepares the preform that section is big, length is short, then
Required optical fiber is obtained by wire drawing.Wherein prefabricated rods section and fiber cross-sections are similar figures.
Side emitting optical fiber is usually basic material, the core-pack arrangement to be passed through using optical fiber, i.e., in optical fiber with plastics or quartz
The heart is the higher fibre core of refractive index, and the outside cladding lower covering of refractive index, fibre core and the covering of external cladding collectively form light
Waveguide.Also it is homogeneous fiber to have part side emitting optical fiber, and optical fiber itself does not have core-pack arrangement of above-mentioned bilayer or multilayer,
Fibre core of this type optical fiber using fiber itself as waveguide, waveguide is constituted using the air of its outer cladding as covering.
Optical fiber communication also uses above-mentioned core-packet waveguiding structure.When selected materials loss is smaller, which can ensure
A large amount of light eventually arrive at tail end output along optical fiber onwards transmission.Since waveguide is to the good constraint ability of light, which is passing
The light total amount very little revealed from optical fiber side during defeated, it is bad for illuminating effect.
Side emitting optical fiber is due to special distributed lighting application purpose, it is desirable that input light can consistent from light
Fine side outgoing.In order to improve lateral emitting efficiency, it is known that method include mainly：
Material modification；Such as described in the patent in Patent No. CN200980125175, to covering and/or core material
Middle addition light scattering agent.The addition of scattering diluent can enhance any direction scattering of region, and more light is caused to transmit
Change direction in the process, from side to outward leakage.But this method to the type, granular size, distribution density of scattering diluent in material,
Uniformity etc., which all exists, is strict with, and difficulty of processing is big.
Described in patent in Patent No. CN01262914, in optical fiber surface by way of eliminating or increasing material shape
At discrete scatterer, increase the reflectance coating of dissimilar material in optical fiber side.There are treatment process to answer for existing local flow improvement method
Problem miscellaneous, treatment effeciency is low, luminous efficiency is not ideal enough, consistency is poor.
Invention content
The utility model provides a kind of optical fiber structure with spiral grooves and its easy-operating preparation method, increases side hair
The lateral emitting efficiency of light optical fiber.
To achieve the goals above, the utility model takes following technical solution：
The utility model provides a kind of side emitting optical fiber with spiral grooves, and the side emitting optical fiber is by cylindrical core
Excircle wraps up in covering composition, and the covering is equipped with the spiral grooves goed deep into inside the covering, and the inside of the spiral grooves is wide
Degree is less than its external width.
Further, the spiral grooves carry out elongated setting or subsection setup according to the total length of the covering.
Further, the spiral grooves are several groups spiral grooves in parallel.
Further, the spiral grooves being distributed on the covering be same structure or be different configuration cascade.
Further, the spiral grooves are wedge angle towards fibre core direction in the section in the side emitting optical fiber end face direction
Arc side triangle.
Further, the outer diameter of a diameter of 0.1mm~1mm of the fibre core, the covering are 0.2mm~5mm, described
The screw pitch of spiral grooves is 2mm~200mm；The spiral grooves go deep into 0.05mm~2mm in the covering, the spiral grooves
Wedge angle be 25 °~40 °.
Spiral grooves described in the utility model are located at light it can be seen from above-mentioned technical solution provided by the utility model
Fine cladding surface simultaneously gos deep into inside covering, in a spiral manner wound fiber axis, repetition trench cross section, the performance of spiral grooves section
For the shape of interior narrow outer width.Requiring optical fiber shorter or when side leakage intensity is higher using length, spiral grooves can be goed deep into
To core region.The spiral grooves can spread all over optical fiber surface, can also only be distributed in one section or several sections of optical fiber surface.Distribution
Parameter of the same race may be used in the spiral grooves of optical fiber surface, can also be the cascade of different parameters spiral grooves.Spiral grooves
Cross sectional shape, determine into geometric parameters such as depth, screw pitch inside covering the lateral emitting efficiency of optical fiber.With it is existing at
Local flow improvement method is compared after fibre, and since spiral grooves are annularly distributed in optical fiber surface, caused lateral emitting is evenly distributed, shines
It is efficient, design is good.Spiral grooves can also generate effect of contraction to the beam direction that side is emitted.
The additional aspect of the utility model and advantage will be set forth in part in the description, these will be from following description
In become apparent, or recognized by the practice of the utility model.
Description of the drawings
It is required in being described below to embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment
The attached drawing used is briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the utility model
Example, for those of ordinary skill in the art, without having to pay creative labor, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 a are the side emitting optical fiber stereoscopic schematic diagram that spiral grooves are carried described in the utility model embodiment one；
Fig. 1 b are the side emitting optical fiber end view that spiral grooves are carried described in the utility model embodiment one；
Fig. 1 c are the side emitting optical fiber diagrammatic cross-section that spiral grooves are carried described in the utility model embodiment one；
Fig. 2 a are the side emitting optical fiber stereoscopic schematic diagram that spiral grooves are carried described in the utility model embodiment two；
Fig. 2 b are the side emitting optical fiber end view that spiral grooves are carried described in the utility model embodiment two；
Fig. 2 c are the side emitting optical fiber diagrammatic cross-section that spiral grooves are carried described in the utility model embodiment two；
Fig. 3 a are the side emitting optical fiber stereoscopic schematic diagram that spiral grooves are carried described in the utility model embodiment three；
Fig. 3 b are the side emitting optical fiber end view that spiral grooves are carried described in the utility model embodiment three；
Fig. 3 c are the side emitting optical fiber diagrammatic cross-section that spiral grooves are carried described in the utility model embodiment three.
1- fibre cores, 2- coverings, 3- spiral grooves.
Specific implementation mode
The embodiment of the utility model is described below in detail, the example of the embodiment is shown in the accompanying drawings, wherein
Same or similar label indicates same or similar element or element with the same or similar functions from beginning to end.Lead to below
It crosses the embodiment being described with reference to the drawings to be exemplary, is only used for explaining the utility model, and cannot be construed to this practicality
Novel limitation.
Those skilled in the art of the present technique are appreciated that unless expressly stated, singulative " one " used herein, " one
It is a ", " described " and "the" may also comprise plural form.It is to be further understood that being used in the specification of the utility model
Wording " comprising " refer to that there are the feature, integer, step, operation, element and/or component, but it is not excluded that in the presence of or
Other one or more features of addition, integer, step, operation, element, component and/or their group.It should be understood that working as us
Claim element to be " connected " or when " coupled " to another element, it can be directly connected or coupled to other elements, or can also
There are intermediary elements.In addition, " connection " used herein or " coupling " may include being wirelessly connected or coupling.It is used herein to arrange
Diction "and/or" includes any cell of one or more associated list items and all combines.
Those skilled in the art of the present technique are appreciated that unless otherwise defined, all terms used herein (including technology art
Language and scientific terminology) there is meaning identical with the general understanding of the those of ordinary skill in the utility model fields.Also
It should be understood that those terms such as defined in the general dictionary should be understood that with in the context of the prior art
The consistent meaning of meaning, and unless defined as here, will not be explained with the meaning of idealization or too formal.
For ease of the understanding to the utility model embodiment, done by taking several specific embodiments as an example below in conjunction with attached drawing into
The explanation of one step, and each embodiment does not constitute the restriction to the utility model embodiment.
Embodiment one
The present embodiment provides a kind of side emitting optical fiber with spiral grooves, the stereoscopic of the side emitting optical fiber is illustrated
Figure, end view, diagrammatic cross-section are respectively as shown in Fig. 1 a, Fig. 1 b, Fig. 1 c.The side emitting optical fiber is cylindrical structure, should
The end face of cylindrical structure is followed successively by fibre core 1, covering 2 and is located at cladding surface and gos deep into the spiral goove inside covering from inside to outside
Slot 3.The section of the spiral grooves 3 on fiber end face direction meets the requirement of narrow outer width in trench cross section.
One more excellent example of the present embodiment is：The section of the spiral grooves 3 on fiber end face direction is wedge angle direction
Arc side triangle on the inside of the side emitting optical fiber.
Further, above-mentioned more excellent example can select the Each part parameter to be respectively：Fibre core 1 it is a diameter of
0.4mm；The outer diameter of covering 2 is 1mm；The screw pitch of spiral grooves 3 is 10mm；It deeply wraps the arc side triangular-section of spiral grooves 3
0.2mm in layer 2, towards 25 ° of wedge angle on the inside of optical fiber.
Embodiment two
The present embodiment provides a kind of side emitting optical fiber with spiral grooves, the stereoscopic of the side emitting optical fiber is illustrated
Figure, end view and diagrammatic cross-section are respectively as shown in Fig. 2 a, Fig. 2 b, Fig. 2 c.The side emitting optical fiber is cylindrical structure, should
The end face of cylindrical structure is followed successively by fibre core 1, covering 2 and is located at cladding surface and gos deep into the spiral goove inside covering from inside to outside
Slot 3.Section of the spiral grooves 3 on fibre profile meets the requirement of narrow outer width in trench cross section.
One more excellent example of the present embodiment is：Section of the spiral grooves 3 on fibre profile is one jiao and is sent out towards the side
Triangle on the inside of light optical fiber.
Further, above-mentioned more excellent example can select the Each part parameter to be respectively：Fibre core 1 it is a diameter of
0.4mm；The outer diameter of covering 2 is 1mm；The screw pitch of spiral grooves 3 is 10mm；The triangular-section of spiral grooves 3 is goed deep into covering 2
0.2mm, towards 25 ° of angle on the inside of optical fiber.
Embodiment three
The present embodiment provides a kind of side emitting optical fiber with spiral grooves, the stereoscopic of the side emitting optical fiber is illustrated
Figure, end view and diagrammatic cross-section are respectively as shown in Fig. 3 a, Fig. 3 b, Fig. 3 c.The side emitting optical fiber is cylindrical structure, should
The end face of cylindrical structure is followed successively by fibre core 1, covering 2 and is located at cladding surface and gos deep into the spiral inside covering 2 from inside to outside
Groove 3.The side emitting optical fiber surface is divided into several sections, and the different spiral grooves of every section of use are handled.
In the present embodiment, which is divided into 3 sections, a sections, c section surfaces two different class spirals are distributed with
Groove, b section surfaces are not dealt with.
One more excellent example of the present embodiment is：A sections of optical fiber surface spiral grooves 3 are four groups of spiral grooves of parallel connection, institute
There is groove parameter identical, trench cross-section is uniformly distributed on cross section of optic fibre；C sections of optical fiber surface spiral grooves 3 are single-row spiral goove
Slot.
Further, above-mentioned more excellent example can select the Each part parameter to be respectively：Fibre core 1 it is a diameter of
0.4mm；The outer diameter of covering 2 is 1mm；The section of four groups of spiral grooves 3 in parallel on the side emitting optical fiber end face direction is point
Angle is towards the arc side triangle on the inside of optical fiber, and 0.2mm in covering 2 is goed deep into the section of the arc side triangle, towards on the inside of optical fiber
Wedge angle is 25 °, screw pitch 10mm；Section of the single-row spiral grooves 3 on the side emitting optical fiber end face direction is wedge angle towards light
The arc side triangle of fine inside, the section of the arc side triangle gos deep into 0.2mm in covering 2, is towards the wedge angle on the inside of optical fiber
40 °, screw pitch 8mm.
Example IV
The utility model embodiment provides a kind of side emitting optical fiber with spiral grooves, in conjunction with Fig. 1 a/b/c, Fig. 2 a/
Shown in b/c, Fig. 3 a/b/c.The side emitting optical fiber is wrapped up in covering 2 by 1 excircle of cylindrical core and is formed, and the covering 2 is equipped with deep
Enter the spiral grooves 3 inside the covering 2, the inner width of the spiral grooves 3 is less than its external width, i.e., in spiral grooves 3
Narrow outer width.
In the present embodiment, the spiral grooves 3 carry out elongated setting or subsection setup according to 2 total length of the covering.
In the present embodiment, the spiral grooves 3 are several groups spiral grooves in parallel.
In the present embodiment, the spiral grooves 3 being distributed on the covering be same structure or be different configuration grade
Connection.
In the present embodiment, the spiral grooves 3 are wedge angle towards fibre core 1 in the section in the side emitting optical fiber end face direction
The arc side triangle in direction.
In the present embodiment, the outer diameter of a diameter of 0.1mm~1mm of the fibre core 1, the covering 2 are 0.2mm~5mm,
The screw pitch of the spiral grooves 3 is 2mm~200mm；The spiral grooves 3 go deep into 0.05mm~2mm in the covering 2, described
The wedge angle of spiral grooves 3 is 25 °~40 °.
The present embodiment also provides a kind of preparation method of the side emitting optical fiber with spiral grooves, which is：First
On preform surface by being machined or laser machining spiral grooves section, then along the preform center line into
While row axial-rotation, move forming spiral grooves along the preform length direction, finally to the optical fiber prefabricating
Stick carries out the preparation that wire drawing process completes the side emitting optical fiber.
In the present embodiment, before and after the wire drawing process, the diameter ratio of preform and side emitting optical fiber is 1：A,
The screw pitch ratio of spiral grooves is 2a：1.
A kind of another preparation method of side emitting optical fiber with spiral grooves provided in this embodiment is：To predispersed fiber
Stick processed carries out wire drawing process, and preform is first machined or is laser machined spiral grooves after the pull-out of wire drawing mouth, so
Disk completes the preparation of the side emitting optical fiber in coiling afterwards.
In conclusion the side emitting optical fiber described in the utility model with spiral grooves, key structure are wound fiber
The spiral groove of outer surface.The structure provides better channels for the side leakage of side emitting optical fiber, and has and be suitable for advising greatly
The simple and quick preparation method of mould production.
Spiral grooves described in the utility model are located at fibre cladding surface and go deep into inside covering, surround in a spiral manner
Shaft axis of optic fibre repeats trench cross section, and spiral grooves section shows as the shape of interior narrow outer width.Requiring optical fiber shorter using length
Or side leakage intensity it is higher when, spiral grooves can be goed deep into core region.The spiral grooves can spread all over optical fiber surface,
One section or several sections of optical fiber surface can be only distributed in.Parameter of the same race may be used in the spiral grooves for being distributed in optical fiber surface,
It can be the cascade of different parameters spiral grooves.The cross sectional shape of spiral grooves, into geometry such as depth, screw pitch inside covering
Parameter determines the lateral emitting efficiency of optical fiber.With it is existing at fibre after compared with local flow improvement method, since spiral grooves are annularly distributed in
Optical fiber surface, caused lateral emitting is evenly distributed, luminous efficiency is high, design is good.Spiral grooves can also be emitted side
Beam direction generate effect of contraction.
The utility model proposes the side emitting optical fiber with spiral grooves preparation method.Spiral is made in optical fiber surface
Groove can be carried out before wire drawing.To the prefabricated rods to have completed, groove is made using mechanical processing or laser ablation and is cut
Face, cooperation prefabricated rods form spiral grooves along the axial-rotation of center line and movement along its length.Prefabricated rods that treated
Continue conventional follow-up drawing process and completes fibre-optical drawing.The preparation method that spiral grooves are made on prefabricated rods surface may be used
Conventional mechanical is processed or the Processes and apparatus of laser processing, and process velocity is fast, precision is high, consistency is good.Due to preform
Diameter be much larger than optical fiber, the screw pitch of wire drawing rear screw groove can obviously increase.It is 1 for diameter ratio before and after wire drawing：A's is prefabricated
Stick and optical fiber, the screw pitch ratio before and after wire drawing are 2a：1.
Spiral grooves are made in optical fiber surface to carry out in drawing process.Use not specially treated prefabricated rods
Wire drawing is carried out, placement mechanical processing or laser processing device, optical fiber are pulled out from wire drawing mouth at the wire drawing mouth of prefabricated stick drawn wire tower
First on-line machining spiral grooves afterwards, then disk in coiling.Spiral grooves heavy workload is made in drawing process in aforementioned pre-
The method of processing spiral grooves in stick surface processed, advantage are the influence that drawing process can be avoided to spiral grooves shape.
Spiral grooves are made in optical fiber surface to carry out after wire drawing.For conventional side emitting optical fiber, using
When it is as needed, with mechanical processing, laser ablation, plasma etching or the method for chemical attack process fiber outer surface, obtain
Said spiral groove.
One of ordinary skill in the art will appreciate that：Attached drawing is the schematic diagram of one embodiment, module in attached drawing or
Flow is not necessarily implemented necessary to the utility model.
Each embodiment in this specification is described in a progressive manner, identical similar portion between each embodiment
Point just to refer each other, and each embodiment focuses on the differences from other embodiments.Especially for device or
For system embodiment, since it is substantially similar to the method embodiment, so describing fairly simple, related place is referring to method
The part of embodiment illustrates.Apparatus and system embodiment described above is only schematical, wherein the conduct
The unit that separating component illustrates may or may not be physically separated, the component shown as unit can be or
Person may not be physical unit, you can be located at a place, or may be distributed over multiple network units.It can root
According to actual need that some or all of module therein is selected to achieve the purpose of the solution of this embodiment.Ordinary skill
Personnel are without creative efforts, you can to understand and implement.
The preferable specific implementation mode of the above, only the utility model, but the scope of protection of the utility model is not
It is confined to this, any one skilled in the art within the technical scope disclosed by the utility model, can readily occur in
Change or replacement, should be covered within the scope of the utility model.Therefore, the scope of protection of the utility model should
It is subject to the protection scope in claims.
Claims (6)
1. a kind of side emitting optical fiber with spiral grooves, which is characterized in that the side emitting optical fiber is by cylindrical core (1) outer circle
Wrap up in covering (2) composition week, the covering (2), which is equipped with, gos deep into the internal spiral grooves (3) of the covering (2), the spiral grooves
(3) inner width is less than its external width.
2. side emitting optical fiber according to claim 1, which is characterized in that the spiral grooves (3) are according to the covering (2)
Total length carry out elongated setting or subsection setup.
3. side emitting optical fiber according to claim 1, which is characterized in that the spiral grooves (3) are the several groups of parallel connection
Spiral grooves.
4. side emitting optical fiber according to claim 1, which is characterized in that the spiral grooves being distributed on the covering (2)
(3) be same structure or be different configuration cascade.
5. side emitting optical fiber according to claim 1, which is characterized in that the spiral grooves (3) are in the side emitting optical fiber
The section in end face direction is arc side triangle of the wedge angle towards fibre core (1) direction.
6. side emitting optical fiber according to claim 5, which is characterized in that a diameter of 0.1mm~1mm of the fibre core (1),
The outer diameter of the covering (2) is 0.2mm~5mm, and the screw pitch of the spiral grooves (3) is 2mm~200mm；The spiral grooves
(3) go deep into the covering (2) interior 0.05mm~2mm, the wedge angle of the spiral grooves (3) is 25 °~40 °.
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| CN201820173846.9U CN207752175U (en) | 2018-02-01 | 2018-02-01 | A kind of side emitting optical fiber with spiral grooves |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820173846.9U CN207752175U (en) | 2018-02-01 | 2018-02-01 | A kind of side emitting optical fiber with spiral grooves |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108152882A (en) * | 2018-02-01 | 2018-06-12 | 北京交通大学 | A kind of side emitting optical fiber with spiral grooves and preparation method thereof |
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2018
- 2018-02-01 CN CN201820173846.9U patent/CN207752175U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108152882A (en) * | 2018-02-01 | 2018-06-12 | 北京交通大学 | A kind of side emitting optical fiber with spiral grooves and preparation method thereof |
| CN108152882B (en) * | 2018-02-01 | 2024-06-11 | 北京交通大学 | Side-emitting optical fiber with spiral groove and preparation method thereof |
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