CN103412376B - Fiber adapter and application thereof - Google Patents
Fiber adapter and application thereof Download PDFInfo
- Publication number
- CN103412376B CN103412376B CN201310364044.8A CN201310364044A CN103412376B CN 103412376 B CN103412376 B CN 103412376B CN 201310364044 A CN201310364044 A CN 201310364044A CN 103412376 B CN103412376 B CN 103412376B
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- China
- Prior art keywords
- shell body
- inner housing
- groove
- fiber adapter
- sleeve pipe
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- 239000000835 fiber Substances 0.000 title claims abstract description 36
- 239000013307 optical fiber Substances 0.000 claims abstract description 45
- 230000010287 polarization Effects 0.000 claims abstract description 36
- 239000000919 ceramic Substances 0.000 claims abstract description 16
- 238000003032 molecular docking Methods 0.000 claims abstract description 6
- 230000002093 peripheral effect Effects 0.000 claims description 10
- 238000009826 distribution Methods 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 abstract description 16
- 238000004519 manufacturing process Methods 0.000 abstract description 12
- 230000005540 biological transmission Effects 0.000 abstract description 10
- 230000008033 biological extinction Effects 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 5
- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- 230000004323 axial length Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
Abstract
The invention discloses a kind of fiber adapter and application thereof, fiber adapter comprises axially through ceramic sleeve, mutually docking and the first sleeve pipe be set with outside ceramic sleeve and the second sleeve pipe, the inner housing be set in outside the first sleeve pipe, the shell body be set in outside the second sleeve pipe; Described inner housing and shell body snap-fit engagement.Fiber adapter of the present invention, for connecting two polarization maintaining optical fibre connectors, can ensure the precision of the optical axis docking of two optical fiber, make extinction ratio be in maximal value, and the transmission performance of optical fiber reaches optimum; Low to the making accuracy requirement of polarization maintaining optical fibre connector in addition, make its production technology simple, low cost of manufacture.The present invention is applicable to optical fiber transmission technique field.
Description
Technical field
The invention belongs to optical fiber transmission technique field, relate to a kind of fiber adapter and application thereof.
Background technology
Polarization maintaining optical fibre is used for transmission line polarized light, and ensure input light and export polarisation of light state coordination, the joints of optical fibre are for realizing continuing of optical fiber.When two polarization maintaining optical fibre connectors connect, need to adopt high-precision fiber adapter to carry out aligning and connect, to ensure the precision of the optical axis docking of two polarization maintaining optical fibres.If the angular displacement of two optical axis docking appearance 2 °, extinction ratio coefficient will fall sharply to 25dB from 30dB, affects the transmission performance of polarization maintaining optical fibre.The precision of optical axis alignment during in order to ensure that two polarization maintaining optical fibres connect, require that the merging precision of the positioning key of connector and optical axis is high, this causes the production technology of polarization maintaining optical fibre connector relative to the complex manufacturing of general single mode fiber connector, and production efficiency is low.And there is complex manufacturing, defect that production cost is high equally in high-precision fiber adapter.
Summary of the invention
For solving the above deficiency existed in prior art, the invention provides a kind of fiber adapter, be connected by this adapter between two polarization maintaining optical fibre connectors, the optical axis merging precision of two optical fiber can be ensured, make extinction ratio be in maximal value, the transmission performance of optical fiber reaches optimum;
Another object of the present invention, is to provide a kind of application of above-mentioned fiber adapter, and it is for connecting two polarization maintaining optical fibre connectors.
For achieving the above object, the technical solution adopted in the present invention is as follows:
A kind of fiber adapter, it comprises axially through ceramic sleeve, mutually docking and the first sleeve pipe be set with outside ceramic sleeve and the second sleeve pipe, the inner housing be set in outside the first sleeve pipe, the shell body be set in outside the second sleeve pipe; Described inner housing and shell body are set with snap-fit engagement.
As limitation of the invention, the main body of described shell body is rotary structure, and one axial end portion is provided with the first groove, the second groove that are interconnected;
The main body of described inner housing is rotary structure, and one end sleeve is loaded in the first groove;
Be fixedly connected radially across the first groove by fixture between described shell body and inner housing.
As the restriction to aforesaid way, described fixture is threaded connector, and described shell body is provided with multiple threaded hole radially run through corresponding to the outer wall of the first groove, and shell body and inner housing connect firmly in threaded hole place through threaded connector.
As further restriction, described inner housing be provided with multiple outwardly vertically and arc grab circumferentially distributed with the end face of shell body belled position, the end of described arc grab is the arc card article extended radially outward;
Corresponding to the position of the first groove and the position corresponding with arc grab on described shell body, be provided with the annular slot that outer end is the structure caved in vertically, the inner structure for radially caving in;
After described inner housing and shell body assemble, arc card article be plugged in annular slot outer end and in the inner place of annular slot and annular slot snap-fit engagement.
As limiting further, the end overlapping attaching position with shell body of described inner housing is provided with the 3rd groove vertically, and described second casing pipe sleeve is loaded in the 3rd groove again; Described first set pipe box is loaded in the second groove.
As further limiting:
With external thread on the outer peripheral face of described inner housing.
With external thread on the outer peripheral face of described shell body.
The diameter with external thread position of described inner housing and the equal diameters with external thread position of shell body.
As further restriction, the outer peripheral face of described shell body is provided with circumferentially distribution and the antiskid thread extended vertically except the position at external thread place.
Invention also provides the application of above-mentioned fiber adapter, this fiber adapter is used for the connection between polarization maintaining optical fibre connector.
Owing to have employed technique scheme, compared with prior art, acquired technical progress is in the present invention:
1. fiber adapter of the present invention is for connecting positioning key and optical axis in polarization maintaining optical fibre connector at any angle, and it can ensure the optical axis merging precision of two optical fiber, makes extinction ratio be in maximal value, and the transmission performance of optical fiber reaches optimum; And the structure of this fiber adapter is simple, and production cost is low;
2. the end sleeve of inner housing is contained in the first groove, can save the overall volume of fiber adapter; Fixture is used for the inner housing and shell body that complete assembling to fix;
3. use threaded connector as fixture, fixed form is simple and firm;
4. after inner housing and shell body assemble, arc grab and annular slot snap-fit engagement, and arc card article be plugged in annular slot outer end and in the inner place of annular slot and annular slot snap-fit engagement, to realize the axial limiting of annular slot to arc card article;
5. the 3rd groove on inner housing is for being set with the second sleeve pipe, and spacing to the second sleeve pipe radial direction; The second groove on shell body for being set with the first sleeve pipe, and to first set caliber to spacing;
6. the external thread on inner housing, shell body outer peripheral face is respectively used to be threaded with polarization maintaining optical fibre connector;
7. the diameter with external thread position of inner housing and the equal diameters with external thread position of shell body, to ensure that this fiber adapter can the identical polarization maintaining optical fibre connector of syndeton;
8. the polarization maintaining optical fibre connector that this fiber adapter connects is used, not high to the accuracy requirement of polarization maintaining optical fibre connector, make the production technology of polarization maintaining optical fibre connector simple, low cost of manufacture, and the transmission performance that polarization maintaining optical fibre is good fast can be ensured.
The present invention is applicable to optical fiber transmission technique field.
Accompanying drawing explanation
Below in conjunction with drawings and the specific embodiments, the present invention is further described in detail.
Fig. 1 is the one-piece construction schematic diagram of the embodiment of the present invention 1;
Fig. 2 is the cut-open view of Fig. 1;
Fig. 3 is the explosive view of Fig. 2;
Fig. 4-5 is respectively the structural representation of Fig. 1 China and foreign countries housing 1, inner housing 2;
Fig. 6 is the annexation cut-away view of the embodiment of the present invention 2;
Fig. 7 is the schematic cross-section of polarization maintaining optical fibre 61,62.
In figure: 1, shell body; 11, the first groove; 12, the second groove; 13, annular slot; 14, threaded hole; 15, antiskid thread; 2, inner housing; 21, the 3rd groove; 22, arc grab; 221, arc card article; 3, the first sleeve pipe; 4, the second sleeve pipe; 5, ceramic sleeve; 61 and 62, polarization maintaining optical fibre; 63, optical axis; 71 and 72, polarization maintaining optical fibre connector; 73, ceramic insertion core; 74, inner sleeve; 75, outer sleeve; 76, positioning key.
Embodiment
embodiment 1a kind of fiber adapter
The present embodiment structure as Figure 1-3, comprises shell body 1, inner housing 2, first sleeve pipe 3, second sleeve pipe 4 and ceramic sleeve 5.
The main body of shell body 1 is T-shaped rotary structure, as shown in Figure 4.The axial end portion of the diameter larger portion position of shell body 1 is provided with the first groove 11, second groove 12 be interconnected, and connects for the structure of step-like groove between the two.Shell body 1 is circumferentially angularly provided with four threaded holes radially run through 14 corresponding on the outer wall at the first groove 11 place, the end face (setting the inner face that this end face is the first groove 11) of the first groove 11 and the second groove 12 joint is provided with the annular slot 13 of cave in vertically (for caving in Fig. 4) left, and the left part of annular slot 13 is with the position of radially caving in.Second groove 12 is step structure, its through end face to shell body 1 left by the inner face place of the first groove 11.With external thread on the outer peripheral face of the diameter smaller part position of shell body 1, the outer peripheral face of diameter larger portion position is provided with circumferentially distribution and the antiskid thread 15 extended vertically.
The main body of inner housing 2 is T-shaped rotary structure, as shown in Figure 5.The external diameter of the diameter larger portion position of inner housing 2 and the diameter of the first groove 11 suitable, and the degree of depth of the axial length of diameter larger portion position and the first groove 11 is suitable and be set in the first groove 11.Inner housing 2 is provided with the 3rd groove 21 of through step structure vertically.The end face of inner housing 2 is angularly provided with three outwardly vertically arc grabs 22 in circumference, and the end of this arc grab 22 is the arc card article 221 extended radially outward.
After inner housing 2 and shell body 1 assemble, arc grab 22 is positioned at annular slot 13, and can rotate in annular slot 13 inner circumferential, arc card article 221 is connected in the position of radially caving in of annular slot 13, with to inner housing 2 move axially carry out spacing.Wedging position between the two is arbitrary mating structures in prior art, as long as can realize the axial limiting of annular slot 13 pairs of arc card articles 221.
With external thread on the outer peripheral face of the diameter smaller part position of inner housing 2, the diameter with external thread position of inner housing 2 and the equal diameters with external thread position of shell body 1.
First sleeve pipe 3 is T-shaped rotary structure, the internal diameter that the external diameter at its diameter larger portion position place and axial length are located with the first stage of the second groove 12 respectively and the degree of depth suitable; The internal diameter at the external diameter at its diameter smaller part position place and the subordinate phase place of the second groove 12 is suitable.First sleeve pipe 3 is set in the second groove 12.
Second sleeve pipe 4 is T-shaped rotary structure, the internal diameter that the external diameter at its diameter larger portion position place and axial length are located with the first stage of the 3rd groove 21 respectively and the degree of depth suitable; The internal diameter at the external diameter at its diameter smaller part position place and the subordinate phase place of the 3rd groove 21 is suitable.Second sleeve pipe 4 is set in the 3rd groove 21.The end face that the end face that the diameter of the first sleeve pipe 3 is larger is larger with the diameter of the second sleeve pipe 4 docks.
Ceramic sleeve 5 is axially through columnar structured, and the internal diameter of its external diameter and the first sleeve pipe 3, second sleeve pipe 4 is suitable, and ceramic sleeve 5 is set in the first sleeve pipe 3, second sleeve pipe 4.
The assembling process of the present embodiment is as follows:
First the first sleeve pipe 3, second sleeve pipe 4 is set with in shell body 1, inner housing 2, then ceramic sleeve 5 is positioned in two sleeve pipes i.e. the first sleeve pipe 3, second sleeve pipe 4, finally inner housing 2 is inserted in shell body 1, firmly pressing shell body 1, inner housing 2, till making arc grab 22 all embed in annular slot 13, now shell body 1 and inner housing 2 closely connect firmly.
Inner housing 2 and shell body 1, for connecting two polarization maintaining optical fibre connectors, after adjusting the position of the optical axis of two polarization maintaining optical fibres, are fixed in threaded hole 14 by threaded connector by this fiber adapter.
embodiment 2the application of fiber adapter in embodiment 1
Fiber adapter described in embodiment 1 one application, it is for connecting two polarization maintaining optical fibre connectors 71 and 72, as shown in Figure 6, polarization maintaining optical fibre connector 71 with 72 for being connected polarization maintaining optical fibre 61 and 62.
Polarization maintaining optical fibre connector 71,72 is identical with the structure of polarization maintaining optical fibre connector of the prior art, comprise polarization maintaining optical fibre 61,62, ceramic insertion core 73, inner sleeve 74, outer sleeve 75, as shown in Figure 6.Inner sleeve 74 is set in outer sleeve 75, and ceramic insertion core 73 is plugged in inner sleeve 74, and inner sleeve 74 outer wall is provided with positioning key 76.
The center line of the xsect of polarization maintaining optical fibre 61,62 is optical axis 63.
The production technology of polarization maintaining optical fibre connector 71,72 is identical with general single mode fiber connector production technology, positioning key 76 angle any with 63 one-tenth, optical axis.
Polarization maintaining optical fibre connector 71, 72 when being connected with the fiber adapter described in embodiment 1, first by two polarization maintaining optical fibre connectors 71, 72 insert from fiber adapter two ends and threaded engagement locking respectively, two polarization maintaining optical fibre connectors 71, 72 respective other one end connect polarized light source and extinction ratio measurement instrument respectively, rotate the shell body 1 of fiber adapter afterwards, ceramic insertion core 73 is rotated in ceramic sleeve 5, observe the numerical value on extinction ratio measurement instrument, when numerical value is maximum, stop operating shell body 1, shell body 1 and inner housing 2 are fixed through threaded hole 14 with threaded connector, now two polarization maintaining optical fibre connectors 71, optical axis 63 direction is accurately docked by 72, the transmission performance of optical fiber is made to reach optimum.
Claims (8)
1. a fiber adapter,
it is characterized in that:it comprises axially through ceramic sleeve (5), mutually docking and to be set with in outer the first sleeve pipe (3) of ceramic sleeve (5) with the second sleeve pipe (4), to be set in the first sleeve pipe (3) shell body outward (1), to be set in the second sleeve pipe (4) inner housing outward (2); Described inner housing (2) and shell body (1) are set with snap-fit engagement;
The main body of described shell body (1) is rotary structure, and one axial end portion is provided with the first groove (11), the second groove (12) that are interconnected;
The main body of described inner housing (2) is rotary structure, and one end sleeve is loaded in the first groove (11);
Be fixedly connected radially across the first groove (11) by fixture between described shell body (1) and inner housing (2);
Described inner housing (2) be provided with multiple outwardly vertically and arc grab (22) circumferentially distributed with the end face of shell body (1) belled position, the end of described arc grab (22) is the arc card article (221) extended radially outward;
Corresponding to the position with the first groove (11) and the position corresponding with arc grab (22) on described shell body (1), be provided with the annular slot (13) that outer end is the structure caved in vertically, the inner structure for radially caving in;
After described inner housing (2) and shell body (1) assemble, arc card article (221) be plugged in annular slot (13) outer end and in the inner place of annular slot (13) and annular slot (13) snap-fit engagement; Arc grab (22) is positioned at annular slot (13), can rotate in annular slot (13) inner circumferential.
2. fiber adapter according to claim 1,
it is characterized in that:described fixture is threaded connector, and described shell body (1) is provided with multiple threaded hole (14) radially run through corresponding to the outer wall at the first groove (11) place, and shell body (1) and inner housing (2) connect firmly in threaded hole (14) place through threaded connector.
3. fiber adapter according to claim 1,
it is characterized in that:the end overlapping attaching position with shell body (1) of described inner housing (2) is provided with the 3rd groove (21) vertically, and described second sleeve pipe (4) is set in the 3rd groove (21); Described first sleeve pipe (3) is set in the second groove (12).
4. fiber adapter according to claim 3,
it is characterized in that:with external thread on the outer peripheral face of described inner housing (2).
5. fiber adapter according to claim 4,
it is characterized in that:with external thread on the outer peripheral face of described shell body (1).
6. fiber adapter according to claim 5,
it is characterized in that:the diameter with external thread position of described inner housing (2) and the equal diameters with external thread position of shell body (1).
7. fiber adapter according to claim 6,
it is characterized in that:the outer peripheral face of described shell body (1) is provided with circumferentially distribution and the antiskid thread (15) extended vertically except the position at external thread place.
8. the application of the fiber adapter according to any one of claim 1-7,
it is characterized in that:this fiber adapter is used for the connection between polarization maintaining optical fibre connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310364044.8A CN103412376B (en) | 2013-08-21 | 2013-08-21 | Fiber adapter and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310364044.8A CN103412376B (en) | 2013-08-21 | 2013-08-21 | Fiber adapter and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103412376A CN103412376A (en) | 2013-11-27 |
| CN103412376B true CN103412376B (en) | 2015-09-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310364044.8A Expired - Fee Related CN103412376B (en) | 2013-08-21 | 2013-08-21 | Fiber adapter and application thereof |
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| Country | Link |
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| CN (1) | CN103412376B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10433639B2 (en) * | 2016-01-20 | 2019-10-08 | The Music People, Inc. | Connection adapter for music stand |
| CN105700084B (en) * | 2016-03-03 | 2017-05-31 | 中国电子科技集团公司第二十三研究所 | A kind of adapter for polarization-maintaining connector |
| CN110518449B (en) * | 2019-09-04 | 2021-01-08 | 杭州奥创光子技术有限公司 | Packaging structure for improving reliability of SESAM all-fiber mode-locked laser oscillator |
| CN111708125B (en) * | 2020-06-24 | 2022-11-11 | 武汉光迅科技股份有限公司 | Optical fiber adapter |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5774612A (en) * | 1995-08-02 | 1998-06-30 | Molex Incorporated | Adapted for interconnecting optical fiber connectors |
| CN2394236Y (en) * | 1999-09-22 | 2000-08-30 | 信息产业部武汉邮电科学研究院 | Adaptor for optical fiber connection |
| CN101128962A (en) * | 2005-02-24 | 2008-02-20 | 安普泰科电子有限公司 | Conversion adapter for connector and connector |
| CN201425636Y (en) * | 2009-04-03 | 2010-03-17 | 深圳日海通讯技术股份有限公司 | Optical fiber backplane adapter |
| CN201654278U (en) * | 2010-04-15 | 2010-11-24 | 河北四方通信设备有限公司 | Cylindrical sleeve type movable connector for optical fibers |
-
2013
- 2013-08-21 CN CN201310364044.8A patent/CN103412376B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5774612A (en) * | 1995-08-02 | 1998-06-30 | Molex Incorporated | Adapted for interconnecting optical fiber connectors |
| CN2394236Y (en) * | 1999-09-22 | 2000-08-30 | 信息产业部武汉邮电科学研究院 | Adaptor for optical fiber connection |
| CN101128962A (en) * | 2005-02-24 | 2008-02-20 | 安普泰科电子有限公司 | Conversion adapter for connector and connector |
| CN201425636Y (en) * | 2009-04-03 | 2010-03-17 | 深圳日海通讯技术股份有限公司 | Optical fiber backplane adapter |
| CN201654278U (en) * | 2010-04-15 | 2010-11-24 | 河北四方通信设备有限公司 | Cylindrical sleeve type movable connector for optical fibers |
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| Publication number | Publication date |
|---|---|
| CN103412376A (en) | 2013-11-27 |
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