CN109471223A - Fiber end face optical imagery structure and optical fiber splicer - Google Patents
Fiber end face optical imagery structure and optical fiber splicer Download PDFInfo
- Publication number
- CN109471223A CN109471223A CN201910012739.7A CN201910012739A CN109471223A CN 109471223 A CN109471223 A CN 109471223A CN 201910012739 A CN201910012739 A CN 201910012739A CN 109471223 A CN109471223 A CN 109471223A
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- optical fiber
- face
- fiber
- microscope
- optical
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- 239000013307 optical fiber Substances 0.000 title claims abstract description 108
- 239000000835 fiber Substances 0.000 title claims abstract description 65
- 230000003287 optical effect Effects 0.000 title claims abstract description 22
- 238000004070 electrodeposition Methods 0.000 claims description 5
- 230000010287 polarization Effects 0.000 abstract description 21
- 238000003384 imaging method Methods 0.000 abstract description 12
- 238000003466 welding Methods 0.000 description 12
- 238000000034 method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000008033 biological extinction Effects 0.000 description 2
- 230000003760 hair shine Effects 0.000 description 2
- 238000005253 cladding Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000007499 fusion processing Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/255—Splicing of light guides, e.g. by fusion or bonding
- G02B6/2553—Splicing machines, e.g. optical fibre fusion splicer
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B21/00—Microscopes
- G02B21/02—Objectives
- G02B21/04—Objectives involving mirrors
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B21/00—Microscopes
- G02B21/06—Means for illuminating specimens
Abstract
The present invention gives a kind of fiber end face optical imagery structures；Including reflecting mirror, microscope and light source, light source irradiates corresponding optical fiber, the light that fiber end face projects is reflected into microscope by reflecting mirror, fiber end face is imaged in microscope.Directly one or more polarization maintaining optical fibre end face is imaged simultaneously, polarization maintaining optical fibre end face stressed zone imaging clearly, alignment angle precision is high.The present invention gives a kind of optical fiber splicer with above-mentioned fiber end face optical imagery structure；The fiber end face optical imagery structure includes two light sources, two light sources are respectively aligned to the fiber gripping channel of optical fiber splicer two sides, there are two reflectings surface for reflecting prism tool, light source irradiates corresponding optical fiber, the light that the fiber end face projects enters microscope by the corresponding reflective surface of reflecting mirror, and fiber end face is imaged in microscope.With stressed zone angular alignment accuracy height, programmed algorithm is simple, is applicable in the extensive advantage of polarization maintaining optical fibre type.
Description
Technical field
The present invention relates to a kind of fiber end face optical imagery structures.
The invention further relates to a kind of optical fiber splicers with fiber end face optical imagery structure.
Background technique
Polarization maintaining optical fibre can transmit linearly polarized light, have very strong holding capacity to the polarization state of polarised light, light is widely applied
The optical fiber telecommunications systems such as the sensors such as fine gyro, fibre optic hydrophone and DWDM, EDFA.The principle of polarization maintaining optical fibre is drawn in covering
Enter stressed zone, is symmetrically distributed in fibre core or so, it is birefringent to incident light generation, to keep the polarizability of polarised light.In polarization-maintaining
In the fusion process of optical fiber, it to be not only aligned fibre core, to be also aligned the stressed zone of optical fiber.The alignment precision of stressed zone, directly certainly
The loss and extinction ratio for determining welding, influence welding quality.
As shown in Figure 1, existing polarization maintaining optical fibre alignment method are as follows: light source 1 ' irradiates polarization maintaining optical fibre 2 ' from side, due to answering
Power area 21 ', fibre core 23 ' and covering 22 ' refractive index difference, polarization maintaining optical fibre 2 ' is in different angles with different imagings
Feature collects above-mentioned signal by microscope 3 ' and imaging sensor 4 ', the stress of optical fiber is aligned according to this imaging features
Area 21 '.This method is simple, conveniently, but there is 21 ' collimating error of stressed zone is big, extinction ratio index is high, it is certain form of partially
The problems such as vibration optical fiber 2 ' can not identify.
In polarization maintaining optical fibre welding, need to be respectively aligned to its angle to two polarization maintaining optical fibres using the above method, then will be right
Polarization maintaining optical fibre after quasi- angle is placed in optical fiber splicer, is carried out weld job, but is needed before aforesaid way welding
The placement angle that polarization maintaining optical fibre is fixed in other imaging fiber mechanism transfers to fused fiber splice, and operation is bothersome laborious, and
If the angle of polarization maintaining optical fibre changes in transfer process, subsequent welding quality is influenced.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of fiber end face optical imageries structurally reasonable, easy to use
Structure.
Technical problem to be solved by the invention is to provide a kind of optical fiber splicers.
In order to solve the above technical problems, the present invention provides a kind of fiber end face optical imagery structures；
Including reflecting mirror, microscope and at least one light source, the light source and optical fiber to be imaged are corresponded, and light source shines
Corresponding optical fiber is penetrated, the light that fiber end face projects is entered into microscope by the reflective surface of reflecting mirror, microscope is to light
Fine end face is imaged.
As the preferred of this fiber end face optical imagery structure, this fiber end face optical imagery structure includes several light sources,
The reflecting mirror has several reflectings surface, and the reflecting surface and optical fiber to be imaged correspond, and light source irradiates corresponding optical fiber,
The light that the fiber end face projects enters microscope by the corresponding reflective surface of reflecting mirror, microscope to fiber end face into
Row imaging.
With such a structure, this fiber end face optical imagery structure can be directly to one or more polarization maintaining optical fibre end
Face is imaged simultaneously, and polarization maintaining optical fibre end face stressed zone imaging clearly, and feature is obvious, and alignment angle precision is high.
In order to solve the above technical problems, the present invention also provides a kind of with above-mentioned fiber end face optical imagery structure
Optical fiber splicer；
The fiber end face optical imagery structure includes two light sources, and two light sources are respectively aligned to optical fiber splicer two sides
Fiber gripping channel, the reflecting mirror is reflecting prism, and there are two the reflecting surface that is arranged symmetrically, reflecting prisms for reflecting prism tool
The position between two fiber end faces being placed on optical fiber splicer, microscope are mounted on the ship type installation of optical fiber splicer
On frame, light source irradiates corresponding optical fiber, and the light that the fiber end face projects enters by the corresponding reflective surface of reflecting mirror
Fiber end face is imaged in microscope, microscope.
With such a structure, reflecting prism is arranged among two optical fiber gaps to welding, by fiber end face
Emergent light is reflected into microscope, and due to the refractive index difference of fibre cladding and stressed zone, different brightness, microscope can be presented
Directly end face stressed zone is imaged, the angle of stressed zone is adjusted by spin fiber, using fiber end face image as judgment basis,
It is overlapped the stressed zone to two optical fiber of welding.
The present invention has stressed zone angular alignment accuracy high, and programmed algorithm is simple, and it is widely excellent to be applicable in polarization maintaining optical fibre type
Point.
The reflecting prism of this optical fiber splicer is mounted on optical fiber splicer by mobile mechanism, and the mobile mechanism includes
Fixing seat, prism bracket, driving motor, eccentric wheel and guide assembly；
Driving motor is fixedly connected in fixing seat, and eccentric wheel is mounted on the output shaft of driving motor, prism bracket with
Fixing seat is connected by guide assembly, and guide assembly includes sliding rail and sliding block, and sliding block is fixedly connected with fixing seat, sliding rail and prism
Bracket is fixedly connected, and is cooperated between sliding block and sliding rail, and prism bracket is extended with the contact portion with eccentric wheel cooperation, and reflecting prism is solid
It is scheduled on the end of prism bracket, guide assembly drives prism bracket close to optical fiber splicer electrode position to separate fused fiber splice
Machine electrode position moves back and forth；
Tension spring is equipped between the contact portion and fixing seat of prism bracket.
With such a structure, mobile mechanism can drive reflecting prism in the Forward of this optical fiber splicer weld job
It moves to position between two optical fiber, the end face of two optical fiber is imaged, after completing imaging, mobile mechanism drives reflecting prism remote
Position between from two optical fiber, does not influence subsequent fused fiber splice to the weld job of two optical fiber.
The eccentric wheel end face of this optical fiber splicer is extended with fixing axle along its axial direction, is set with bearing in fixing axle,
The cooperation of the contact portion of bearing and prism bracket；With such a structure, bearing replaces the contact portion of eccentric wheel and prism bracket
Cooperation reduces friction therebetween, increases the stability of entire mobile mechanism.
The electrode two sides of the optical fiber splicer of this optical fiber splicer are respectively equipped with several fiber clamps, and two light sources are set respectively
It sets in the two sides fiber clamp of optical fiber splicer, the light source and corresponding optical fiber contact；With such a structure, work as light
Fibre, which is placed into fixture, can be close to light source surface, guarantee to illuminate optical fiber with maximum brightness.
Detailed description of the invention
Fig. 1 is the schematic diagram of the imaging of polarization maintaining optical fibre side view in the prior art.
Fig. 2 is the imaging schematic diagram of this fiber end face optical imagery constructive embodiment.
Fig. 3 is one of the usage state diagram of this optical fiber splicer embodiment.
Fig. 4 is the two of the usage state diagram of this optical fiber splicer embodiment.
Fig. 5 is the perspective view of this optical fiber splicer embodiment mobile mechanism and reflecting prism.
Fig. 6 is the decomposition view of this optical fiber splicer embodiment mobile mechanism and reflecting prism.
Specific embodiment
As shown in Figure 2
This fiber end face optical imagery structure includes that reflecting mirror, microscope 3 and two light sources 1, reflecting mirror are reflecting prism
5, for the tool of reflecting prism 5 there are two the reflecting surface of angle in 90 °, two light sources 1 are corresponding with two optical fiber 2 to be imaged, and light source 1 shines
Corresponding optical fiber 2 is penetrated, the light that 2 end face of optical fiber is projected enters microscope by the corresponding reflective surface of reflecting prism 5
3,2 end face of optical fiber is imaged in microscope 3.
As shown in Fig. 3 to 6 (Fig. 3 to 4 shows component relevant to the application in optical fiber splicer, other components with
The structure of optical fiber splicer is identical in the prior art, does not have faithful representation in figure, and the knot of left part is in addition merely illustrated in figure
Structure, right survey part are identical and symmetrical as the structure of left part；Fig. 4 saves to clearly react the structure of this optical fiber splicer
Ship type mounting rack is omited).
Above-mentioned fiber end face optical imagery structure is used on optical fiber splicer, is needed to existing fiber heat sealing machine
Structure is adjusted, specific as follows:
The electrode two sides of optical fiber splicer are respectively equipped with two fiber clamps 71, and two light sources 1 are separately positioned on optical fiber welding
(fiber clamp 71 in left side, right side fiber clamp and left side fibre clip are merely illustrated in figure in the two sides fiber clamp 71 to pick
Lamps structure is identical), the light source 1 is contacted with the optical fiber 2 in 2 gripping channel of optical fiber in optical fiber splicer two sides.
Reflecting prism 5 is mounted on the shell of optical fiber splicer by mobile mechanism 6, mobile mechanism 6 include fixing seat 61,
Prism bracket 65, driving motor 62, eccentric wheel 63 and guide assembly；
Fixing seat 61 is fixed on 72 outside of ship type mounting rack, and driving motor 62 is connected and fixed by bolt with fixing seat 61,
Eccentric wheel 63 is mounted on the output shaft of driving motor 62, and 63 end face of eccentric wheel is extended with fixing axle along its axial direction, fixed
Bearing 64 is set on axis.
Prism bracket 65 is connect with fixing seat 61 by guide assembly, and guide assembly includes sliding block 66b and sliding rail 66a, is slided
Block 66b is bolted with fixing seat 61, and sliding rail 66a is bolted with prism bracket 65, sliding rail 66a and sliding block 66b
Between cooperate, prism bracket 65 is extended with the contact portion 65a with the cooperation of the bearing 64 of eccentric wheel 63, and reflecting prism 5 is fixed on rib
The end of mirror support 65, guide assembly drive prism bracket 65 from close to optical fiber splicer electrode position to separate optical fiber splicer
Electrode position moves back and forth, and tension spring 67, the bearing of eccentric wheel 63 are equipped between the contact portion 65a and fixing seat 61 of prism bracket 65
64 between reflecting prism 5 and contact portion 65a.
Microscope 3 is mounted on the ship type mounting rack 72 of optical fiber splicer, and the light that 2 end face of optical fiber is projected passes through reflecting mirror
Corresponding reflective surface enters microscope 3, and 2 end face of optical fiber is imaged in microscope 3.
Before 2 weld job of polarization maintaining optical fibre, it will be consolidated to welding polarization maintaining optical fibre 2 by the fiber clamp 71 of optical fiber splicer
It is fixed, while light source 1 is started to work, light source 1 can be close to 1 surface of light source, guarantees to illuminate optical fiber 2 with maximum brightness, mobile mechanism 6
Driving motor 62 drives prism bracket 65 to move to by 5 two sides reflecting surface of reflecting prism, incite somebody to action among welding optic fibre 2
The end face reflection of polarization maintaining optical fibre 2 is imaged 2 end face of optical fiber on 3, microscope.Left and right (is not shown in attached drawing
Right part) two 2 end faces of optical fiber can be imaged on side by side on imaging sensor 4, and software program can be to two 2 end faces of optical fiber
Image does algorithm process respectively.
2 end face of the optical fiber imaging arrived according to the observation, drives optical fiber 2 to adjust the angle, makes two 2 stressed zones of optical fiber to welding
It is precisely coincident.After the completion of the collimation of stressed zone, the driving motor 62 of mobile mechanism 6 will push back initial position again between prism,
Start welding optic fibre 2.
Above-described is only one embodiment of the present invention, it is noted that for those of ordinary skill in the art
For, without departing from the principle of the present invention, several variations and modifications can also be made, these also should be regarded as belonging to this hair
Bright protection scope.
Claims (6)
1. a kind of fiber end face optical imagery structure, it is characterized in that:
Including reflecting mirror, microscope and at least one light source, the light source and optical fiber to be imaged are corresponded, light source irradiation pair
The light that fiber end face projects is entered microscope by the reflective surface of reflecting mirror by the optical fiber answered, and microscope is to optical fiber end
Face is imaged.
2. fiber end face optical imagery structure according to claim 1, it is characterized in that:
Including several light sources, the reflecting mirror has several reflectings surface, and the reflecting surface and optical fiber to be imaged correspond, light
Corresponding optical fiber is irradiated in source, and the light that the fiber end face projects enters microscope by the corresponding reflective surface of reflecting mirror,
Fiber end face is imaged in microscope.
3. a kind of optical fiber splicer with fiber end face optical imagery structure described in claim 1 and 2, it is characterized in that:
The fiber end face optical imagery structure includes two light sources, and two light sources are respectively aligned to the light of optical fiber splicer two sides
Fine gripping channel, the reflecting mirror are reflecting prism, and there are two the reflecting surface being arranged symmetrically, reflecting prism is in reflecting prism tool
It is placed on position between two fiber end faces on optical fiber splicer, microscope is mounted on the ship type mounting rack of optical fiber splicer
On, light source irradiates corresponding optical fiber, and the light that the fiber end face projects enters aobvious by the corresponding reflective surface of reflecting mirror
Fiber end face is imaged in micro mirror, microscope.
4. optical fiber splicer according to claim 3, it is characterized in that:
The reflecting prism is mounted on optical fiber splicer by mobile mechanism, and the mobile mechanism includes fixing seat, prism
Bracket, driving motor, eccentric wheel and guide assembly；
Driving motor is fixedly connected in fixing seat, and eccentric wheel is mounted on the output shaft of driving motor, prism bracket and fixation
Seat is connected by guide assembly, and guide assembly includes sliding rail and sliding block, and sliding block is fixedly connected with fixing seat, sliding rail and prism bracket
It is fixedly connected, cooperates between sliding block and sliding rail, prism bracket is extended with the contact portion with eccentric wheel cooperation, and reflecting prism is fixed on
The end of prism bracket, guide assembly drive prism bracket electromechanical to separate fused fiber splice close to optical fiber splicer electrode position
Pole position moves back and forth；
Tension spring is equipped between the contact portion and fixing seat of prism bracket.
5. optical fiber splicer according to claim 4, it is characterized in that:
The eccentric wheel end face is extended with fixing axle along its axial direction, and bearing, bearing and prism bracket are set in fixing axle
Contact portion cooperation.
6. optical fiber splicer according to claim 3, it is characterized in that:
The electrode two sides of optical fiber splicer are respectively equipped with several fiber clamps, and two light sources are separately positioned on the two of optical fiber splicer
In optical fiber fixture, the light source and corresponding optical fiber contact.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2018116479866 | 2018-12-30 | ||
| CN201811647986 | 2018-12-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109471223A true CN109471223A (en) | 2019-03-15 |
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ID=65677256
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910012739.7A Pending CN109471223A (en) | 2018-12-30 | 2019-01-07 | Fiber end face optical imagery structure and optical fiber splicer |
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| Country | Link |
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| CN (1) | CN109471223A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109738985A (en) * | 2019-03-20 | 2019-05-10 | 北京大盟创业科技有限公司 | Polarization-preserving fiber axis fixing system based on end face imaging |
| CN111221072A (en) * | 2020-03-30 | 2020-06-02 | 南京聚科光电技术有限公司 | Device and method for writing fiber grating by femtosecond laser |
| CN113160323A (en) * | 2021-03-31 | 2021-07-23 | 南京邮电大学 | Accurate butt joint method for small-core-diameter panda type polarization maintaining optical fiber |
| CN114924354A (en) * | 2022-05-30 | 2022-08-19 | 安徽相和通信有限公司 | Alignment method of multi-core optical fiber |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109738985A (en) * | 2019-03-20 | 2019-05-10 | 北京大盟创业科技有限公司 | Polarization-preserving fiber axis fixing system based on end face imaging |
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| CN113160323A (en) * | 2021-03-31 | 2021-07-23 | 南京邮电大学 | Accurate butt joint method for small-core-diameter panda type polarization maintaining optical fiber |
| CN113160323B (en) * | 2021-03-31 | 2022-10-04 | 南京邮电大学 | Accurate butt joint method for small-core-diameter panda type polarization maintaining optical fiber |
| CN114924354A (en) * | 2022-05-30 | 2022-08-19 | 安徽相和通信有限公司 | Alignment method of multi-core optical fiber |
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