CN202676946U - Optical fiber adapter with inclined insertion core - Google Patents
Optical fiber adapter with inclined insertion core Download PDFInfo
- Publication number
- CN202676946U CN202676946U CN 201220185358 CN201220185358U CN202676946U CN 202676946 U CN202676946 U CN 202676946U CN 201220185358 CN201220185358 CN 201220185358 CN 201220185358 U CN201220185358 U CN 201220185358U CN 202676946 U CN202676946 U CN 202676946U
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- lock pin
- external
- optical fiber
- fiber adapter
- insertion core
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Abstract
The utility model discloses an optical fiber adapter with an inclined insertion core. The optical fiber adapter comprises an outer sleeve and an insertion core seat for fixing the insertion cores, wherein a fixed insertion core and an external insertion core with optical fiber through holes are fixedly arranged on the insertion core seat in sequence, the optical fiber through hole of the fixed insertion core and the optical fiber through hole of the external insertion core are in butt joint, and one end of the external insertion core is exposed outside the outer sleeve; the fixed insertion core is horizontally arranged along the horizontal axis, the end of the external insertion core exposed outside the outer sleeve is of an inclined plane, the external insertion core is arranged to be inclined forming a certain angle with the horizontal axis along a direction inclining from the horizontal axis towards the inclined plane. According to the utility model, the insertion core is divided into two parts, and the external insertion core having an inclined optical coupling terminal face is fixedly mounted at an angle, so that the offset of the optical fiber numerical aperture is corrected, the coupling efficiency of the optical fibers is improved without the deterioration of the return loss value, thereby effectively resolving the problems of large optical coupling loss and low coupling efficiency.
Description
Technical field
The utility model belongs to the optical communication technique field, specifically, relates to fiber adapter, more particularly, relates to a kind of fiber adapter with inclination lock pin.
Background technology
In fibre-optic transmission system (FOTS), often need to adopt fiber adapter that optical fiber is carried out detachable the connection with optical fiber.For guaranteeing that optical device has certain return loss value, generally be processed to the inclined-plane of certain angle in the adapter for the optically-coupled end face of the ceramic insertion core outer end of passing optical fiber, shown in the optical coupling structure synoptic diagram of Fig. 1 existing fiber adapter.In Fig. 1, move towards as example as level take optical device horizontal positioned, optical fiber, the optically-coupled end face 111 of lock pin 11 is processed to the angle of inclination and is
The inclined-plane, therefore, when lock pin 11 horizontal positioned, form one between optically-coupled end face 111 and the vertical axis 12
Angle.Because should
The existence of angle when the light signal that is arranged in fiber core 17 transmission of lock pin 11 emits from optically-coupled end face 111, will exist an angle to be between emergent light outgoing axis 14 and the horizontal axis 13
Angle.For instance, if
Be 8 °, can know this according to the Optical Fiber Numerical Aperture value
To be 3.7 °.Because light passes in and out the direction of optical fiber not on the desirable level axis of light transmission, but becomes one with the desirable level axis
Angle.So, so that the area in the light efficient coupling zone 16 that exists between lock pin 11 and the optical device 15 reduces, cause the coupling of part light less than in the optical fiber and lose, the problem that optical coupling efficiency is low, the optical signal transmission ability weakens occurs.
Owing to can only keeping a direction, the lock pin in the existing fiber adapter arranges, thereby can't correct because of lock pin and be processed to the optical coupling loss that the inclined-plane of certain angle causes, especially now optical-fiber network is than having added in the past more service content, the luminous power that requires is more and more higher, the inefficient problem of Optical Device Coupling seems especially outstanding, reduce optical transmission performance, affected further developing and using of optical-fiber network.
Summary of the invention
The utility model can only keep a direction setting, can't correct because lock pin is processed to the problems such as the optical coupling loss that the inclined-plane of certain angle causes is large, efficient is low a kind of fiber adapter with inclination lock pin is provided for the lock pin of existing fiber adapter, efficiently solves described problem.
For solving the problems of the technologies described above, the utility model is achieved by the following technical solutions:
A kind of fiber adapter with inclination lock pin, comprise outer sleeve and be used for the fixedly lock pin base of lock pin, on the lock pin base, be installed with successively fixedly lock pin and external lock pin with optical fiber through hole, fixedly the optical fiber through hole of the optical fiber through hole in the lock pin and external lock pin connects, and external lock pin one end exposes to outer sleeve; Fixedly lock pin is horizontally disposed with along horizontal axis, and the end that external lock pin exposes to outer sleeve is the inclined-plane, and the direction that external lock pin tilts towards the inclined-plane along horizontal axis and horizontal axis form an angle and be obliquely installed.
Fiber adapter of the present utility model is by being divided into two lock pin, an optical fiber runs through two lock pins, the end face of external lock pin that not only will be relevant with coupling is processed into the inclined-plane, simultaneously this lock pin inclination certain angle is installed and fixed, to correct the skew of Optical Fiber Numerical Aperture, improve the coupling efficiency of optical fiber, and the return loss value can be not deteriorated, efficiently solves the problem that optical coupling loss is large, coupling efficiency is low.
Aforesaid fiber adapter, the size of the angle between described external lock pin and the described horizontal axis is determined according to the angle of inclination on the inclined-plane of described external lock pin, coincide from the emergent light outgoing axis of the inclined-plane outgoing of external lock pin and desirable horizontal axis guaranteeing, reduce to greatest extent optical coupling loss, improve coupling efficiency.
Aforesaid fiber adapter, when being 8 ° at the angle of inclination on the inclined-plane of described external lock pin, the angle between described external lock pin and the described horizontal axis is 3.7 °.
Aforesaid fiber adapter, pass successively fixedly lock pin and external lock pin for ease of fiber core, described external lock pin offers hydraucone near an end of described fixedly lock pin, the bell-mouthed wide mouthful of optical fiber through hole in described fixedly lock pin, the optical fiber through hole of bell-mouthed slot and described external lock pin connects.
Aforesaid fiber adapter, for reducing the size of the optical device that is connected by external lock pin with fiber adapter, the external diameter of described external lock pin is not more than the external diameter of described fixedly lock pin.
Preferably, the external diameter of described external lock pin is less than the external diameter of described fixedly lock pin.
Aforesaid fiber adapter, described fixedly lock pin and described external lock pin adopt interference fit to fix with described lock pin base respectively, and described lock pin base and described outer sleeve adopt interference fit to fix.
Aforesaid fiber adapter is arranged with the lock pin sleeve with opening on the described fixedly lock pin outer wall.
Aforesaid fiber adapter, described fiber adapter is SC type fiber adapter espespecially, and described lock pin base, fixedly the material of lock pin, external lock pin and lock pin sleeve is pottery.
Compared with prior art, advantage of the present utility model and good effect are: fiber adapter of the present utility model is by being divided into two lock pin, an optical fiber runs through two lock pins, the end face of external lock pin that not only will be relevant with coupling is processed into the inclined-plane, simultaneously this lock pin inclination certain angle is installed and fixed, to correct the skew of Optical Fiber Numerical Aperture, so that emergent light outgoing axis can overlap with horizontal axis, to improve the coupling efficiency of optical fiber, and the return loss value can be not deteriorated, efficiently solves the problem that optical coupling loss is large, coupling efficiency is low.
After reading by reference to the accompanying drawings embodiment of the present utility model, other characteristics of the present utility model and advantage will become clearer.
Description of drawings
Fig. 1 is the optical coupling structure synoptic diagram of prior art fiber adapter;
Fig. 2 is that the side that the utlity model has an embodiment of fiber adapter of inclination lock pin is cutd open structural representation;
Fig. 3 is the optical coupling structure synoptic diagram of Fig. 2 fiber adapter.
Among above-mentioned each figure, the component names of Reference numeral and correspondence thereof is as follows:
11, lock pin; 111, optically-coupled end face; 12, vertical axis; 13, horizontal axis; 14, emergent light outgoing axis; 15, optical device; 16, efficient coupling zone; 17, fiber core;
21, fiber adapter; 211, outer sleeve; 212, lock pin sleeve; 213, fixing lock pin; 214, lock pin base; 215, external lock pin; 216, fiber core; 217, hydraucone; 218, optically-coupled end face; 22, vertical axis; 23, horizontal axis; 24, emergent light outgoing axis; 25, optical device; 26, efficient coupling zone.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is described in detail.
Please refer to Fig. 2 and shown in Figure 3, wherein, Fig. 2 is that the side that the utlity model has an embodiment of fiber adapter of inclination lock pin is cutd open structural representation, and Fig. 3 is the optical coupling structure synoptic diagram of this embodiment fiber adapter.
This embodiment is take SC type fiber adapter as example, fiber adapter 21 includes outer sleeve 211 and the lock pin base 214 of SC type, on lock pin base 214, be installed with successively fixedly lock pin 213 and external lock pin 215, and external lock pin 215 1 ends expose to outer sleeve 211, so that in mating connection with other optical device.Fixedly all offer the optical fiber through hole in lock pin 213 and the external lock pin 215, and fixedly the optical fiber through hole of lock pin 213 and the optical fiber through hole of external lock pin 215 connect.In the fiber adapter 21 of this embodiment, fixedly lock pin 213 is horizontally disposed with along horizontal axis 23, the end face that external lock pin 215 exposes to an end of outer sleeve 211 is its optically-coupled end face 218, this optically-coupled end face 218 is an inclined-plane, and external lock pin 215 has angle towards direction and the horizontal axis 23 that optically-coupled end face 218 tilts along horizontal axis 23
Be obliquely installed.
Because the lock pin of fiber adapter 21 is divided into fixedly lock pin 213 and external lock pin 215 two parts, a fiber core 216 runs through this two lock pins by the optical fiber through hole, external lock pin 215 not only has the optically-coupled end face 218 of inclination, with the return loss value that obtains to meet the demands, and, external lock pin 215 is fixed with the angled inclination of horizontal axis, form the inclination lock pin, can correct the skew of Optical Fiber Numerical Aperture, so that the emergent light outgoing axis 24 of launching from optically-coupled end face 218 and desirable axis, also be that horizontal axis 23 overlaps as much as possible, increase the efficient coupling area, improved the coupling efficiency of optical fiber, guaranteeing that it is large to efficiently solve optical coupling loss on the basis that the return loss value can be not deteriorated, the problem that coupling efficiency is low.
Specifically, the angle between external lock pin 215 and the horizontal axis 23
Size determine according to optically-coupled end face 218 angles of inclination of external lock pin.In case because after the angle of inclination of optically-coupled end face 218 determines, just determined from the emergent light outgoing axis 24 of this end face outgoing and the deviation angle between the desirable horizontal axis 23, needed only angle
Be set as the deviation angle between emergent light outgoing axis 24 and the desirable horizontal axis 23, just can guarantee that emergent light outgoing axis 24 and horizontal axis 23 coincide, as shown in Figure 3, thereby increased the area in the light efficient coupling zone 26 that exists between external lock pin 215 and the optical device 25, be coupled in the optical fiber so that light is as much as possible, improved optical coupling efficiency and optical signal transmission ability.As preferred embodiment, as shown in Figure 2, the angle of inclination of the optically-coupled end face 218 of external lock pin 215
Be 8 °, the angle between external lock pin 215 and the horizontal axis 23
Be 3.7 °, therefore, for the fiber adapter 21 of preferred embodiment, the angle that forms between the optically-coupled end face 218 of its external lock pin 215 and the vertical axis 22
The number of degrees be 11.7 °.
In this embodiment, fiber core 216 will pass and then enter the optical fiber through hole in the external lock pin 215 and run through external lock pin 215 from the optical fiber through hole of fixing lock pin 213.Because external lock pin 215 is obliquely installed, if the optical fiber through hole is too little, is unfavorable for that fiber core 216 passes.For this reason, the end that this embodiment patches core 215 close described fixedly lock pins 213 outside offers hydraucone 217, and the wide mouthful optical fiber through hole in fixing lock pin 213 of hydraucone 217, the optical fiber through hole in the slot of hydraucone 217 and the external lock pin 215 connects.Fiber core 216 runs through fixedly lock pin 213 and external lock pin 215 by the optical fiber through hole, and is fixed in these two lock pins.
In this embodiment, the optical device that is coupled with fiber adapter 21 will be set on the external lock pin 215, because external lock pin 215 is obliquely installed, causes easily the size of optical device larger, for this reason, this embodiment requires the external diameter of external lock pin 215 to be not more than the fixedly external diameter of lock pin 213.As preferred embodiment, the external diameter of external lock pin 215 is less than the fixing external diameter of lock pin 213.
The fiber adapter 21 of above-described embodiment is when assembling, fixedly lock pin 213 and external lock pin 215 are fixed on the lock pin base 214 by interference fit first, then a sheathed lock pin sleeve 212 with opening on fixing lock pin 213 outer walls is fixed on lock pin base 214 on the SC type outer sleeve 211 by interference fit at last and gets final product.
And, in this embodiment, lock pin base 214, fixedly the material of lock pin 213, external lock pin 215 and lock pin sleeve 212 preferably is pottery, and the fiber core 216 that runs through wherein can be single-mode fiber, can be multimode optical fiber, this embodiment all do concrete restriction to this yet.
In addition, fiber adapter 21 is not limited to the described SC type of this embodiment, also can be FC type, ST type etc.; The angle of inclination of the ramp type optically-coupled end face 218 of fiber adapter 21
Being not limited to 8 °, also can be other angle values such as 6 °, 11 °, for the fiber adapter at these angles of inclination, only need to according to its for the Optical Fiber Numerical Aperture value angle number of degrees of setting external lock pin 215 and horizontal axis 23 get final product.
Above embodiment is only in order to illustrating the technical solution of the utility model, but not limits it; Although with reference to previous embodiment the utility model is had been described in detail, for the person of ordinary skill of the art, still can make amendment to the technical scheme that previous embodiment is put down in writing, perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of the utility model technical scheme required for protection.
Claims (1)
1. fiber adapter with inclination lock pin, comprise outer sleeve and be used for the fixedly lock pin base of lock pin, it is characterized in that, on the lock pin base, be installed with successively fixedly lock pin and external lock pin with optical fiber through hole, fixedly the optical fiber through hole of the optical fiber through hole in the lock pin and external lock pin connects, and external lock pin one end exposes to outer sleeve; Fixedly lock pin is horizontally disposed with along horizontal axis, and the end that external lock pin exposes to outer sleeve is the inclined-plane, and the direction that external lock pin tilts towards the inclined-plane along horizontal axis and horizontal axis form an angle and be obliquely installed.
2, fiber adapter according to claim 1 is characterized in that, the size of the angle between described external lock pin and the described horizontal axis is determined according to the angle of inclination on the inclined-plane of described external lock pin.
3, fiber adapter according to claim 2 is characterized in that, the angle of inclination on the inclined-plane of described external lock pin is 8 °, and the angle between described external lock pin and the described horizontal axis is 3.7 °.
4, each described fiber adapter in 3 according to claim 1, it is characterized in that, described external lock pin offers hydraucone near an end of described fixedly lock pin, the bell-mouthed wide mouthful of optical fiber through hole in described fixedly lock pin, the optical fiber through hole of bell-mouthed slot and described external lock pin connects.
5, each described fiber adapter in 3 according to claim 1 is characterized in that the external diameter of described external lock pin is not more than the external diameter of described fixedly lock pin.
6, fiber adapter according to claim 5 is characterized in that, the external diameter of described external lock pin is less than the external diameter of described fixedly lock pin.
7, each described fiber adapter in 3 according to claim 1 is characterized in that described fixedly lock pin and described external lock pin adopt interference fit to fix with described lock pin base respectively, and described lock pin base is fixed with described outer sleeve employing interference fit.
8, each described fiber adapter in 3 according to claim 1 is characterized in that, is arranged with the lock pin sleeve with opening on the described fixedly lock pin outer wall.
9, fiber adapter according to claim 8 is characterized in that, described fiber adapter is SC type fiber adapter.
10, fiber adapter according to claim 9 is characterized in that, described lock pin base, fixedly the material of lock pin, external lock pin and lock pin sleeve is pottery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220185358 CN202676946U (en) | 2012-04-27 | 2012-04-27 | Optical fiber adapter with inclined insertion core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220185358 CN202676946U (en) | 2012-04-27 | 2012-04-27 | Optical fiber adapter with inclined insertion core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202676946U true CN202676946U (en) | 2013-01-16 |
Family
ID=47497843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220185358 Expired - Lifetime CN202676946U (en) | 2012-04-27 | 2012-04-27 | Optical fiber adapter with inclined insertion core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202676946U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106646774A (en) * | 2016-10-21 | 2017-05-10 | 青岛海信宽带多媒体技术有限公司 | Optical module |
| CN107102407A (en) * | 2017-06-13 | 2017-08-29 | 深圳市惠富康光通信有限公司 | A kind of optical fiber interface component |
| CN112805604A (en) * | 2018-09-05 | 2021-05-14 | 扇港元器件股份有限公司 | Inspection tip with self-adjusting prism for optical fiber and method |
| CN113671637A (en) * | 2021-07-12 | 2021-11-19 | 武汉英飞光创科技有限公司 | A lock pin subassembly for emission of light time module adapter |
| CN118131410A (en) * | 2024-05-07 | 2024-06-04 | 成都奥捷通信技术有限公司 | Universal optical passive connector and use method thereof |
-
2012
- 2012-04-27 CN CN 201220185358 patent/CN202676946U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106646774A (en) * | 2016-10-21 | 2017-05-10 | 青岛海信宽带多媒体技术有限公司 | Optical module |
| CN107102407A (en) * | 2017-06-13 | 2017-08-29 | 深圳市惠富康光通信有限公司 | A kind of optical fiber interface component |
| CN112805604A (en) * | 2018-09-05 | 2021-05-14 | 扇港元器件股份有限公司 | Inspection tip with self-adjusting prism for optical fiber and method |
| CN113671637A (en) * | 2021-07-12 | 2021-11-19 | 武汉英飞光创科技有限公司 | A lock pin subassembly for emission of light time module adapter |
| CN118131410A (en) * | 2024-05-07 | 2024-06-04 | 成都奥捷通信技术有限公司 | Universal optical passive connector and use method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130116 |