CN210572875U - Optical fiber adapter - Google Patents
Optical fiber adapter Download PDFInfo
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- CN210572875U CN210572875U CN201921807061.3U CN201921807061U CN210572875U CN 210572875 U CN210572875 U CN 210572875U CN 201921807061 U CN201921807061 U CN 201921807061U CN 210572875 U CN210572875 U CN 210572875U
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Abstract
The utility model belongs to the technical field of the fiber connection, a fiber adapter is disclosed, include: the optical fiber matching device comprises a shell, a coupling lens arranged in the shell, optical fiber matching liquid arranged in the shell and distributed on two sides of the coupling lens, and an incident interface and an emergent interface arranged on two opposite sides of the shell, wherein the centers of the incident interface and the emergent interface are positioned on a main optical axis of the coupling lens. The utility model discloses can reduce the fiber end face butt joint damage, keep fiber end face smooth finish, reduce fei nieer reflection, improve optic fibre butt joint efficiency, butt joint stability and coupling efficiency, be applicable to high power laser leaded light and use.
Description
Technical Field
The utility model relates to an optical fiber connection technical field especially relates to an optical fiber adapter.
Background
The existing optical fiber connection methods mainly include the following three methods:
1. and (3) optical fiber fusion: the method is mainly characterized in that the optical fiber and the optical fiber or the optical fiber and the tail fiber are connected by using a fiber fusing machine, and the bare fiber and the optical fiber tail fiber in the optical cable are fused together to form a whole.
2. Cold connection of optical fibers: the method is fastest, but needs cold splices and corresponding tools.
3. The adapter is connected: this is an active connection. Firstly determining the type of the optical fiber head, then customizing an optical fiber jumper wire with enough length to ensure that the types of the optical fiber heads at two ends are matched, and then adding an optical fiber adapter (also called an optical fiber coupler and a flange plate) to ensure that the optical fiber adapter is matched with the type of the optical fiber head during connection.
Generally most often, the third way, a generic adapter is mainly composed of three parts: two optical fiber connectors and a coupler, on the basis of which some adaptability improvement can be made, such as a 'lens self-coupling type optical fiber adapter' disclosed in patent document with publication number of CN103901545B, which comprises a coupling lens group, a lens sleeve, a thick fiber core flange, a thin fiber core flange, a thick fiber core limiting pipe and a thin fiber core limiting pipe; the coupling lens group is packaged in the lens sleeve in a cementing mode; the lens sleeve is fixed in a sliding mode and packaged in a screw fastening or gluing mode, the thick fiber core limiting pipe is fixed at the central hole of the thick fiber core flange, and the thin fiber core limiting pipe is fixed at the central hole of the thin fiber core flange. The scheme can be used for optical coupling between optical fibers with mismatched core diameters, adopts an optical path system consisting of a plurality of optical lenses to carry out beam expanding or beam shrinking optical coupling, and is suitable for the plug-in connection of optical fiber jumpers with different core diameters;
most adapter connections today suffer more or less from the following problems:
1. when the existing optical fibers are butted, the distance is too short, the end faces are contacted, stress is generated, and the optical fibers are easy to burn and melt when high-power light is passed; if the butt-joint distance is too large, the coupling efficiency is reduced.
2. In the operation process, grease on the hands of an operator and dust in the air can pollute the end face of the optical fiber.
3. Use the optic fibre adapter to make butt joint optic fibre expose in certain air for a long time, the surface can produce dust and pile up or humid air, all can make the loss of connection grow, produces the surface mar, and the fibre core can be stopped up when serious, can not transmit light, can lead to the fibre core to be burnt out by high power laser even when serious.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is not enough to above-mentioned prior art, provide one kind and can reduce the fiber end face butt joint damage, keep fiber end face smooth finish, reduce fei nieer reflection, improve optic fibre butt joint efficiency, butt joint stability and coupling efficiency, be applicable to the optic fibre adapter that high power laser leaded light was used.
In order to realize the purpose, the utility model discloses a technical scheme be:
a fiber optic adapter, comprising: the optical fiber matching device comprises a shell, a coupling lens arranged in the shell, optical fiber matching liquid arranged in the shell and distributed on two sides of the coupling lens, and an incident interface and an emergent interface arranged on two opposite sides of the shell, wherein the centers of the incident interface and the emergent interface are positioned on a main optical axis of the coupling lens.
In the scheme, the incident interface and the emergent interface are used for installing and connecting two optical fiber connectors which need to be butted, and the optical fiber matching fluid can take away foreign matters such as grease and dust on the end faces of the optical fiber connectors when the optical fiber connectors are inserted; the diffusion angle of the light emitted by the optical fiber is reduced, and the coupling efficiency is improved; the lubricating agent is used as a lubricating agent, so that friction is reduced, and butt joint damage is reduced; gaps of the connection points can be filled, Fresnel reflection is reduced, and the light efficiency is improved; the butt joint stability in a humid environment, a high-temperature environment and a low-temperature environment can be improved; the coupling lens has a coupling effect and can control the butt joint distance of the optical fibers, so that the problems that stress is generated due to too short distance and end face contact and the optical fibers are easy to burn when high-power light is transmitted are solved; the problems of long distance and low coupling efficiency can be avoided, the coupling efficiency of optical fiber butt joint is favorably improved when the optical fiber matching liquid is matched with the optical fiber matching liquid, and the optical fiber matching liquid can be suitable for light guiding application of high-power laser, such as optical fiber connection application in light sources of solid lasers, gas lasers, semiconductor lasers, optical fiber lasers and the like.
Furthermore, elastic silica gel pieces are arranged on one side, close to the incident interface, in the outer shell and one side, close to the emergent interface, in the outer shell. The elastic silica gel piece has certain elasticity, is favorable for avoiding the leakage of the optical fiber matching fluid when the optical fiber connector ferrule is inserted into the optical fiber matching fluid, and is also favorable for avoiding the leakage of the optical fiber matching fluid when the optical fiber connector ferrule is inserted into the optical fiber matching fluid.
Furthermore, an elastic silica gel piece is arranged in the outer shell, an inner cavity is formed in the elastic silica gel piece, the coupling lens is arranged in the inner cavity, and the inner cavity is filled with the optical fiber matching fluid and distributed on two sides of the coupling lens. The leakage of the optical fiber matching fluid is favorably and fully limited.
Furthermore, the elastic silica gel piece is provided with a pinhole opening which is right opposite to the centers of the incident interface and the emergent interface. The optical fiber connector ferrule is convenient to insert in a quick alignment mode, and light diffusion is reduced.
Further, the incident interface is any one of an FC interface, an ST interface, an SC interface, a PC interface, an APC interface, and an MT-RJ interface, and the exit interface is any one of an FC interface, an ST interface, an SC interface, a PC interface, an APC interface, and an MT-RJ interface. The types of the incident interface and the emergent interface are relatively independent, and the optical fiber adapter with the adapter matched with the interfaces is selected when the optical fiber adapter is used.
Further, the incident interface include with shell body integrated into one piece connect and with the inside intubate that communicates of shell body and with shell body integrated into one piece connect and be located the peripheral joint connecting portion of intubate, the intubate overcoat is equipped with the sealing washer. The intubate supplies the optical fiber splice lock pin to insert, and joint connection portion is used for supplying optical fiber splice's fixed, and the sealing washer is used for supplying optical fiber splice and the sealed butt of shell body, avoids optic fibre matching fluid to flow out after connecting with interface locking, also is the volatilization that reduces optic fibre matching fluid simultaneously.
Further, the bottom of the sealing ring is connected with the outer shell in an adhesive mode. The problem of poor sealing effect caused by the fact that the sealing ring moves too freely is avoided, and sealing reliability is improved.
Further, the joint connecting part is a sleeve, the outer surface of the sleeve is provided with a threaded connecting part, and a U-shaped clamping groove is formed in the side wall of one side of the sleeve. Threaded connection portion can supply FC type fiber connector's connector to screw, and U type draw-in groove can supply FC type fiber connector's U type card counterpoint joint, is favorable to realizing quick, stable and detachable butt joint for a long time.
Further, the coupling lens is spherical or aspherical.
Furthermore, two limiting clamping grooves which are oppositely arranged and used for accommodating and limiting the coupling lens are formed on the inner side wall surface of the outer shell. The coupling lens is beneficial to limiting and keeping a better coupling effect.
Furthermore, the lateral surface of shell body outwards extends and is equipped with the fixed plate, the fixed plate is run through from top to bottom and is equipped with the bolt hole. The optical fiber adapter is fixed, and the good butt joint effect of the two optical fibers is kept.
Further, any one or more of the outer shell, the incident interface and the exit interface are made of metal materials. The durability of the fiber optic adapter is advantageously improved.
After the technical scheme is adopted, the beneficial effects of the utility model are that:
using coupling lens matching: the coupling lens can control the butt joint distance of the optical fibers, and avoids the phenomenon that the stress is easy to burn and melt due to the fact that the distance is too short and the end faces are in contact; the problems of long distance and low coupling efficiency can be avoided;
the optical fiber butt joint is completed in the optical fiber matching fluid, compared with the butt joint in the air, the diffusion angle of the light emitted by the optical fiber can be reduced, and the coupling beam angle of the lens coupled to the optical fiber can be smaller, so that better coupling efficiency is achieved;
the optical fiber matching fluid can bear high-power laser, can clean the end face, fill the gap of a splicing point, reduce Fresnel reflection, reduce the friction force generated by the original installation mode and ensure that the optical fiber matching fluid can work in a humid and high-low temperature environment;
the elastic silica gel piece can limit the moving range of the optical fiber matching fluid, so that the optical fiber matching fluid does not leak when the optical fiber inserting core enters the optical fiber matching fluid;
the sealing ring can prevent the matching fluid from flowing out after butt joint, and the evaporation of the matching fluid is reduced;
the arrangement of the threaded connection part and the U-shaped clamping groove is favorable for realizing quick, long-term and stable and detachable butt joint of the FC-type optical fiber connector and the optical fiber adapter.
Spacing draw-in groove can spacing coupling lens, avoids coupling lens to shift in the transportation shake process appearance, and the guarantee light concentrates and collects the effect.
Drawings
In order to more clearly illustrate embodiments of the present invention or the technical solutions of the prior art, the drawings are as follows:
fig. 1 is a cross-sectional view of an optical fiber adapter provided in embodiment 1 of the present invention;
fig. 2 is a cross-sectional view of an optical fiber adapter provided in embodiment 2 of the present invention;
fig. 3 is a perspective view of an optical fiber adapter provided in embodiment 3 of the present invention.
Detailed Description
Connecting optical fibers using existing adapter connections often presents problems: when the optical fibers are butted, the distance is too short, the end faces are contacted, stress is generated, and the optical fibers are easy to burn when high-power light is passed; when in butt joint, the distance is too large, and the coupling efficiency is reduced; in the operation process, grease on the hands of an operator and dust in the air can pollute the end face of the optical fiber; use the ring flange to connect, the optic fibre of butt joint exposes for a long time in the air, and the surface can produce the dust and pile up or receive humid air, all can make the loss of connection grow, produces the surface mar, and the fibre core can be stopped up when serious, can not transmit light, can lead to the fibre core to be burnt out by high power laser even when serious.
Based on the above problem, the utility model provides an optical fiber adapter is used for improving.
The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.
Example 1
As shown in fig. 1, the present embodiment provides a fiber optic adapter, including: the shell body 1, locate coupling lens 2 in the shell body 1, locate in the shell body 1 and distribute in the optical matching liquid 3 of coupling lens 2 both sides and locate the incident interface 4 and the exit interface 5 of the relative both sides of shell body 1, incident interface 4 with the center of exit interface 5 is in on coupling lens 2's the primary optical axis, be favorable to the coupled that can more concentrate from the light of the optical fiber connector outgoing that incident interface 4 and exit interface 5 got into.
Specifically, the coupling lens 2 is positioned and installed in the outer shell 1, mirror surfaces on two sides of the coupling lens face the incident interface 4 and the emergent interface 5 respectively, the optical fiber matching fluid 3 is filled in the outer shell 1, and the two sides of the coupling lens 2 are distributed uniformly, wherein the optical fiber matching fluid 3 is a soft, non-sticky, water-blocking, non-toxic, harmless and glittering and translucent paste-like compound, the refractive index of the paste-like compound is close to that of the optical fiber, the incident interface 4 and the emergent interface 5 can be integrally formed on the outer shell 1 or detachably connected, and when the paste-like compound is detachably connected, the paste-like compound is preferably in sealing connection with the joint of the outer shell 1, so that the optical fiber matching fluid 3 is prevented from overflowing from the joint.
In the scheme, the incident interface 4 and the emergent interface 5 are used for installing and connecting two optical fiber connectors which need to be butted, and the optical fiber matching fluid 3 can take away foreign matters such as grease and dust on the end faces of the optical fiber connectors when the optical fiber connectors are inserted; the diffusion angle of the light emitted by the optical fiber is reduced, and the coupling efficiency is improved; the lubricating agent is used as a lubricating agent, so that friction is reduced, and butt joint damage is reduced; gaps of the connection points can be filled, Fresnel reflection is reduced, and the light efficiency is improved; the butt joint stability in a humid environment, a high-temperature environment and a low-temperature environment can be improved; the coupling lens 2 has a coupling effect and can control the butt joint distance of the optical fibers, so that the problems that stress is generated due to too short distance and end face contact and the optical fibers are easy to burn when high-power light is transmitted are solved; the problems of long distance and low coupling efficiency can be avoided, the coupling efficiency of light butt joint is greatly improved by matching with the optical fiber matching liquid 3, and the optical fiber matching liquid can be suitable for light guiding application of high-power laser, such as optical fiber connection application in light sources of solid lasers, gas lasers, semiconductor lasers, optical fiber lasers and the like.
Example 2
As shown in fig. 2, the present embodiment is different from the previous embodiments in that an elastic silicone member 6 is disposed on both a side of the outer housing 1 close to the incident interface 4 and a side of the outer housing 1 close to the exit interface 5. Elastic silica gel spare 6 here is the slice, can be plane slice, also can be the curved surface slice, and elastic silica gel spare 6 can be connected with shell body 1 inside wall through sticky mode, can puncture elastic silica gel spare 6 and enter into in the optic fibre matching fluid when the optical fiber splice lock pin is inserted. The elastic silica gel piece 6 has certain elasticity, and is favorable for avoiding the leakage of the optical fiber matching fluid 3 when the carrying and moving are carried, and is also favorable for avoiding the leakage of the optical fiber matching fluid 3 when the optical fiber connector ferrule is inserted into the optical fiber matching fluid 3.
Or optionally, an elastic silica gel piece 6 is arranged in the outer shell 1, an inner cavity is formed in the elastic silica gel piece 6, the coupling lens 2 is arranged in the inner cavity, and the optical fiber matching fluid 3 is distributed in the inner cavity and distributed on two sides of the coupling lens 2. Here, the elastic silicone member 6 is a closed sleeve body, and the coupling lens 2 and the optical fiber matching fluid 3 are both closed inside thereof, so that sufficient protection can be obtained without fear that the optical fiber matching fluid 3 may volatilize from the wall of the outer case 1.
Further, the elastic silicone piece 6 is provided with a pinhole opening 61 facing the centers of the incident interface 4 and the exit interface 5. The optical fiber matching fluid 3 is a pasty compound, and the elastic silica gel piece 6 has elasticity, so that the optical fiber matching fluid 3 cannot overflow from the pinhole opening 61 when no excessive external force acts.
The incident interface 4 is any one of an FC interface, an ST interface, an SC interface, a PC interface, an APC interface, and an MT-RJ interface.
The emergent interface 5 is any one of an FC interface, an ST interface, an SC interface, a PC interface, an APC interface and an MT-RJ interface.
Namely, the types of the incident interface 4 and the emergent interface 5 are relatively independent, and the optical fiber adapter with the adapter matched with the interfaces is selected when the optical fiber adapter is used.
Preferably, two limiting clamping grooves 13 which are oppositely arranged and used for accommodating and limiting the coupling lens 2 are formed on the inner side wall surface of the outer shell 1. The coupling lens 2 is beneficial to limiting, and a better coupling effect is kept.
Example 3
As shown in fig. 3, the difference between the present embodiment and the previous embodiment is that the incident interface 4 includes an insertion tube 41 integrally connected with the outer housing 1 and communicating with the inside of the outer housing 1, and a joint connection portion 42 integrally connected with the outer housing 1 and located at the periphery of the insertion tube 41, wherein a sealing ring 43 is sleeved outside the insertion tube 41, and the sealing ring 43 is limited in the joint connection portion 42. Intubate 41 is formed with the optic fibre entry, communicate with each other with shell body 1 is inside, can supply the optic fibre connector to insert, joint connecting portion 42 is used for supplying the fixed of optic fibre joint, fixed mode can be the joint, the spiro union etc., sealing washer 43 is used for supplying optic fibre joint and shell body 1 sealed butt, the limiting displacement who not only has optic fibre lock pin depth of insertion control can also be given and avoid optic fibre matching liquid 3 to flow after joint and interface locking, also reduce the volatilizing of optic fibre matching liquid 3 simultaneously.
Preferably, the bottom of the sealing ring 43 is connected with the outer shell 1 by gluing. The problem of poor sealing effect caused by the fact that the sealing ring 43 moves freely is avoided, and sealing reliability is improved.
The joint connecting part 42 is a sleeve, the cannula 41 and the sealing ring 43 are wrapped inside the sleeve, the outer surface of the sleeve is provided with a threaded connecting part 421, and a U-shaped clamping groove 422 is formed in the side wall of one side of the sleeve. Threaded connection portion 421 can supply FC type fiber splice's connector to screw, and U type draw-in groove 422 can supply FC type fiber splice's U type card counterpoint joint, is favorable to realizing quick, permanent stable and detachable butt joint, and is favorable to avoiding optic fibre direct exposure in the air, has avoided the dust to pile up and the possibility of weing.
The structural arrangement of the exit interface 5 can refer to the entrance interface 4, which is not described in detail herein.
Taking the butt joint of the FC type connector and the optical fiber adapter of the present embodiment as an example: the FC type connector generally comprises an optical fiber connector inserting core, a U-shaped card, a metal sleeve ring, a metal sleeve and an optical fiber connector, when the FC type connector is installed, the optical fiber connector inserting core enters the outer shell 1 from the inserting tube 41, firstly passes through the pinhole opening 61 at the elastic silica gel piece 6 and is fully wrapped in the optical fiber matching liquid 3, the optical fiber matching liquid 3 is extruded to diffuse towards the periphery of the optical fiber connector inserting core, the elastic silica gel piece 6 is extruded to generate appropriate deformation, and further the overflow of the optical fiber matching liquid 3 can be avoided, then the optical fiber connector inserting core continues to penetrate deep until the U-shaped card at the metal sleeve part is matched with the U-shaped clamping groove 422 of the optical fiber adapter, the metal sleeve ring is abutted with a sealing ring glued on the outer shell 1 to limit the optical fiber from continuing to penetrate, in the process, the optical fiber matching liquid 3 can take away dust and other foreign, finally, the optical fiber connector is screwed on the threaded connection portion 421 on the outer surface of the sleeve, and the two ends of the optical fiber adapter of this embodiment are both provided with corresponding optical fibers, so that the optical fibers can be butted.
When the optical fiber is in light conduction, light rays pass through the optical fiber matching fluid 3 and irradiate the coupling lens 2 at a smaller divergence angle, the coupling lens 2 converges the light rays on the butt joint optical fiber inserting core, and the butt joint efficiency and the coupling efficiency are improved.
Certainly, in order to facilitate the connection of connectors of other models, the connector connecting portion 42 may also be configured as a square receiving groove, and a buckle is disposed inside the receiving groove, so that the connectors of the SC-type optical fiber connector can be fixed.
The coupling lens 2 is spherical or aspherical.
Preferably, the outer side surface of the outer shell 1 extends outwards to form a fixing plate 11, and the fixing plate 11 is provided with bolt holes 12 penetrating up and down. The optical fiber adapter is fixed, and the good butt joint effect of the two optical fibers is kept.
Further, any one or more of the outer shell 1, the incident interface 4 and the exit interface 5 are made of a metal material. The durability of the fiber optic adapter is advantageously improved.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (10)
1. A fiber optic adapter, comprising: the optical fiber matching device comprises a shell, a coupling lens arranged in the shell, optical fiber matching liquid arranged in the shell and distributed on two sides of the coupling lens, and an incident interface and an emergent interface arranged on two opposite sides of the shell, wherein the centers of the incident interface and the emergent interface are positioned on a main optical axis of the coupling lens.
2. An adaptor according to claim 1, wherein the resilient silicone member is provided on both the side of the outer housing adjacent to the entrance interface and the side of the outer housing adjacent to the exit interface.
3. An optical fiber adapter according to claim 1, wherein an elastic silicone member is disposed in the outer housing, the elastic silicone member forms an inner cavity, the coupling lens is disposed in the inner cavity, and the optical fiber matching fluid is distributed in the inner cavity and on both sides of the coupling lens.
4. An optical fiber adapter according to claim 2 or 3, wherein the elastic silicone member is provided with a pinhole opening aligned with the center of the incident interface and the exit interface.
5. The fiber optic adapter according to claim 1, wherein the incident interface is any one of an FC interface, an ST interface, an SC interface, a PC interface, an APC interface, and an MT-RJ interface, and the emergent interface is any one of an FC interface, an ST interface, an SC interface, a PC interface, an APC interface, and an MT-RJ interface.
6. An optical fiber adapter according to claim 1, wherein the entrance interface comprises an insertion tube integrally connected with the outer housing and communicating with the inside of the outer housing, and a connector connecting portion integrally connected with the outer housing and located at the periphery of the insertion tube, and a sealing ring is sleeved outside the insertion tube.
7. A fibre-optic adapter according to claim 6, wherein the base of the sealing ring is adhesively attached to the outer housing.
8. An optical fiber adapter according to claim 6, wherein the connector connecting portion is a sleeve, the outer surface of the sleeve is provided with a threaded connecting portion, and a side wall of one side of the sleeve is provided with a U-shaped slot.
9. An adaptor according to claim 1, wherein the coupling lens is spherical or aspherical.
10. An optical fiber adapter according to claim 1, wherein two limiting slots are formed on an inner side wall of the outer housing, and the two limiting slots are oppositely arranged for accommodating and limiting the coupling lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921807061.3U CN210572875U (en) | 2019-10-25 | 2019-10-25 | Optical fiber adapter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921807061.3U CN210572875U (en) | 2019-10-25 | 2019-10-25 | Optical fiber adapter |
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| CN210572875U true CN210572875U (en) | 2020-05-19 |
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| CN201921807061.3U Active CN210572875U (en) | 2019-10-25 | 2019-10-25 | Optical fiber adapter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110673274A (en) * | 2019-10-25 | 2020-01-10 | 浙江光塔节能科技有限公司 | Optical fiber adapter |
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2019
- 2019-10-25 CN CN201921807061.3U patent/CN210572875U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110673274A (en) * | 2019-10-25 | 2020-01-10 | 浙江光塔节能科技有限公司 | Optical fiber adapter |
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Address after: Room e-405-406, No. 198, Qidi Road, Xiaoshan Economic and Technological Development Zone, Xiaoshan District, Hangzhou City, Zhejiang Province Patentee after: Zhejiang Guangta Safety Technology Co., Ltd Address before: Room E-405-406, 198 Kaidi Road, Xiaoshan Economic and Technological Development Zone, Hangzhou City, Zhejiang Province Patentee before: ZHEJIANG GUANGTA ENERGY-SAVING TECHNOLOGY Co.,Ltd. |
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