CN220171297U - Optical fiber beam splitter - Google Patents
Optical fiber beam splitter Download PDFInfo
- Publication number
- CN220171297U CN220171297U CN202321710778.2U CN202321710778U CN220171297U CN 220171297 U CN220171297 U CN 220171297U CN 202321710778 U CN202321710778 U CN 202321710778U CN 220171297 U CN220171297 U CN 220171297U
- Authority
- CN
- China
- Prior art keywords
- fiber
- collimating lens
- optical fiber
- optical
- tapered
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000013307 optical fiber Substances 0.000 title claims abstract description 88
- 239000000835 fiber Substances 0.000 claims abstract description 111
- 230000003287 optical effect Effects 0.000 claims abstract description 45
- 230000004927 fusion Effects 0.000 claims abstract description 25
- 239000003292 glue Substances 0.000 claims description 17
- 230000008878 coupling Effects 0.000 claims description 10
- 238000010168 coupling process Methods 0.000 claims description 10
- 238000005859 coupling reaction Methods 0.000 claims description 10
- 238000002844 melting Methods 0.000 claims description 8
- 230000008018 melting Effects 0.000 claims description 8
- 238000005253 cladding Methods 0.000 claims description 6
- 230000001012 protector Effects 0.000 claims description 6
- 239000000565 sealant Substances 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 4
- 239000000155 melt Substances 0.000 claims 1
- 238000004891 communication Methods 0.000 abstract description 5
- 238000001723 curing Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000009434 installation Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000008054 signal transmission Effects 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000003848 UV Light-Curing Methods 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Optical Couplings Of Light Guides (AREA)
Abstract
The utility model relates to the technical field of optical communication, in particular to an optical fiber beam splitter, which comprises a fusion tapered optical fiber tail fiber, a multi-core optical fiber tail fiber, a sleeve, a first collimating lens and a second collimating lens; the fusion tapered optical fiber tail fiber, the first collimating lens, the second collimating lens and the multi-core optical fiber tail fiber are sequentially arranged in the sleeve along the optical path; the fusion tapered optical fiber tail fiber is provided with a plurality of optical fiber channels, and the multi-core optical fiber tail fiber is provided with a plurality of fiber cores; the number of the fiber channels is the same as that of the cores of the multi-core fiber pigtails, and the fiber channels are coupled with the cores in a one-to-one correspondence manner. The optical fiber beam splitter can realize the connection function in a simple structure setting mode.
Description
Technical Field
The utility model relates to the technical field of optical communication, in particular to an optical fiber beam splitter.
Background
The multi-core optical fiber is an optical fiber which shares an outer cladding, contains a plurality of fiber cores and has an own inner cladding; compared with the conventional single-core optical fiber, the multi-core optical fiber has the characteristics of space division multiplexing and higher space channel density, so that the multi-core optical fiber can be used in ultra-large-capacity optical communication.
In most optical communication applications, the optical device of a single-core fiber often needs to be connected to the optical device of a multi-core fiber. In the prior art, a plurality of optical devices such as an optical fiber collimator, an optical fiber coupler, an optical fiber beam splitter and the like are matched together to form effective connection between the optical device of the single-core optical fiber and the optical device of the multi-core optical fiber; the optical devices required by the connection mode are more, and the structure setting mode is complex.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provides an optical fiber beam splitter, which can realize a connecting function in a simple structure setting mode.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides an optical fiber beam splitter, which comprises a fusion tapered optical fiber tail fiber, a multi-core optical fiber tail fiber, a sleeve, a first collimating lens and a second collimating lens.
The fusion tapered optical fiber tail fiber, the first collimating lens, the second collimating lens and the multi-core optical fiber tail fiber are sequentially arranged in the sleeve along the optical path.
The fusion tapered fiber pigtail has a plurality of fiber channels and the multicore fiber pigtail has a plurality of cores.
The number of the fiber channels is the same as that of the cores of the multi-core fiber pigtails, and the fiber channels are coupled with the cores in a one-to-one correspondence manner.
Optionally, the focal lengths of the first collimating lens and the second collimating lens are the same, and the focal points of the first collimating lens and the second collimating lens are both located at the symmetry center of the first collimating lens and the second collimating lens.
Optionally, the difference between the out-of-optical mode field diameter of the fusion tapered fiber pigtail and the out-of-optical mode field diameter of the multicore fiber pigtail is less than 0.5 microns.
Optionally, the fused biconical fiber pigtail comprises a fused biconical fiber, a protective piece and a capillary; the fused biconical optical fiber is arranged in the capillary tube, the fused biconical optical fiber comprises a coupling area and a separation area, a protecting piece is arranged at one end of the coupling area, and one end of the capillary tube with a horn mouth faces the protecting piece.
Optionally, the inner diameter of the capillary tube is larger than the largest diameter of the fusion tapered optical fiber, and the outer diameter of the capillary tube is smaller than the inner diameter of the sleeve.
Optionally, a fixing glue is filled in the horn mouth of the capillary tube to fix the positions of the fused biconical taper optical fiber, the protecting piece and the capillary tube, and the refractive index of the fixing glue is smaller than that of the fused biconical taper optical fiber cladding.
Optionally, curing glue is respectively arranged between the melting tapered fiber pigtail and the sleeve, between the first collimating lens and the sleeve, between the second collimating lens and the sleeve, and between the multicore fiber pigtail and the sleeve, so as to fix the positions of the melting tapered fiber pigtail, the first collimating lens, the second collimating lens and the multicore fiber pigtail.
Optionally, sealant is provided at both ends of the sleeve.
Compared with the prior art, the optical fiber beam splitter has the advantages that the structure is simple, the optical signals of the single-core optical fibers are split through the fused biconical taper optical fiber pigtails, the split optical signals are transmitted to the multi-core optical fiber pigtails through the collimation calibration of the first collimating lens and the second collimating lens, and the multi-core optical fiber pigtails output the split optical signals to optical devices of the multi-core optical fibers; therefore, the optical fiber beam splitter can realize the connection function in a simpler structure setting mode.
Drawings
The utility model will be further described with reference to the accompanying drawings and examples:
FIG. 1 is a schematic diagram of a fiber optic splitter according to an embodiment of the present utility model;
fig. 2 is a schematic structural diagram of a fused tapered fiber pigtail according to an embodiment of the present utility model.
In the figure: 110. melting and tapering the tail fiber; 111. melting and tapering the optical fiber; 1111. a coupling region; 1112. a separation zone; 112. a protective member; 113. a capillary tube; 1131. a horn mouth; 120. a multicore fiber pigtail; 130. a sleeve; 140. a first collimating lens; 150. and a second collimating lens.
Detailed Description
In most optical communication applications, the optical device of a single-core fiber often needs to be connected to the optical device of a multi-core fiber. In the prior art, a plurality of optical devices such as an optical fiber collimator, an optical fiber coupler, an optical fiber beam splitter and the like are matched together to form effective connection between the optical device of the single-core optical fiber and the optical device of the multi-core optical fiber, and the connection mode requires more optical devices; in addition, the optical signal transmission line formed by a plurality of optical devices has overhigh optical signal transmission loss due to coupling errors, connection faults and the like, so that the optical signals are easy to be negatively influenced in the transmission process.
In order to solve the technical problems, the utility model provides an optical fiber beam splitter, and the technical scheme and the embodiment of the utility model are described in detail with reference to the accompanying drawings.
The technical scheme adopted by the utility model is as follows:
as shown in fig. 1, the present utility model provides a fiber optic splitter that includes a fusion tapered fiber pigtail 110, a multicore fiber pigtail 120, a ferrule 130, a first collimating lens 140, and a second collimating lens 150.
The optical signal of the single-core optical fiber is subjected to beam splitting through the fused biconical optical fiber tail fiber 110, the split optical signal is transmitted to the multi-core optical fiber tail fiber 120 through the collimation and calibration of the first collimation lens 140 and the second collimation lens 150, and the multi-core optical fiber tail fiber 120 outputs the split optical signal to an optical device of the multi-core optical fiber; the mode can achieve the purpose of forming effective connection between the optical device of the single-core optical fiber and the optical device of the multi-core optical fiber in a relatively simple structural arrangement mode, reduces the application cost of the optical fiber beam splitter and is beneficial to the production and application of the optical fiber beam splitter.
The fusion tapered fiber pigtail 110, the first collimating lens 140, the second collimating lens 150, and the multicore fiber pigtail 120 are disposed in the ferrule 130 in sequence along the optical path.
The sleeve 130 can facilitate the installation and positioning of the fusion tapered fiber pigtail 110, the first collimating lens 140, the second collimating lens 150, and the multicore fiber pigtail 120, and plays a corresponding role in protection.
The fusion tapered fiber pigtail 110 has a plurality of fiber channels and the multicore fiber pigtail 120 has a plurality of cores.
In the present utility model, "a plurality of" means two or more of "a plurality of optical fiber channels" and "a plurality of cores".
The number of the fiber channels is the same as the number of the cores of the multi-core fiber pigtail 120, and a plurality of the fiber channels are coupled with a plurality of the cores in a one-to-one correspondence.
In practical production applications, the specific number of the multicore channels of the fused biconical taper fiber pigtail 110 and the specific number of the cores of the multicore fiber pigtail 120 are set according to customer requirements or production design requirements, and the number of the fiber channels and the number of the cores of the multicore fiber pigtail 120 are not specifically limited on the premise that the number of the fiber channels is the same as the number of the cores of the multicore fiber pigtail 120.
Further, the focal lengths of the first collimating lens 140 and the second collimating lens 150 are the same, and the focal points of the first collimating lens 140 and the second collimating lens 150 are both located at the symmetry center of the first collimating lens 140 and the second collimating lens 150. The arrangement mode can enable the transmission light path of the optical signal between the melting tapering optical fiber tail fiber 110 and the multi-core optical fiber tail fiber 120 to be in geometric symmetry, so that the loss of the optical signal in the transmission process is reduced.
Optionally, the difference between the out-of-optical mode field diameter of the fusion tapered fiber pigtail 110 and the out-of-optical mode field diameter of the multicore fiber pigtail 120 is less than 0.5 microns. The arrangement mode can reduce the coupling difficulty between the fusion tapered fiber tail fiber 110 and the multi-core fiber tail fiber 120, so that the coupling precision between the fusion tapered fiber tail fiber 110 and the multi-core fiber tail fiber 120 is improved, and the transmission loss of optical signals is further reduced.
In an alternative embodiment, an optical fiber with an optical field diameter of 8-9 microns is selected for fusion tapering, and the optical field diameter of the prepared fusion tapered optical fiber pigtail 110 is 9.4 microns; at this time, the multi-core fiber pigtail 120 having an optical output field diameter of 9.6 μm may be selected so that the optical output field diameter of the fusion tapered fiber pigtail 110 matches the optical output field diameter of the multi-core fiber pigtail 120.
Further, referring to fig. 2, the fusion-tapered fiber pigtail 110 includes a fusion-tapered fiber 111, a protector 112, and a capillary 113; the fusion-tapered optical fiber 111 is disposed in the capillary 113, the fusion-tapered optical fiber 111 includes a coupling region 1111 and a separation region 1112, a protector 112 is disposed at one end of the coupling region 1111, and an end of the capillary 113 having a flare 1131 faces the protector 112.
The capillary 113 can facilitate the installation and positioning of the fused biconical taper optical fiber 111 and the protection piece 112, and can protect the fused biconical taper optical fiber 111, thereby improving the installation efficiency and the service life of the fused biconical taper optical fiber pigtail 110.
In an alternative embodiment, the end of the fusion-tapered fiber pigtail 110 distal from the protector 112 is provided with a wedge angle, which may be set at 10 °, 8 °, or 6 °; the wedge angle can reduce the adverse effect of the reflected light on the optical fiber beam splitter and improve the optical signal transmission quality of the optical fiber beam splitter.
In an alternative embodiment, the material of the protecting member 112 is silica gel, which has better thermal stability and chemical stability, so that the risk of losing the protecting function of the protecting member 112 due to the influence of external environment can be reduced, and the service life of the protecting member 112 can be prolonged, so that the protecting member 112 can play a stable protecting role on the fused tapered fiber pigtail 110.
Optionally, the inner diameter of capillary 113 is greater than the largest diameter of melt tapered optical fiber 111 and the outer diameter of capillary 113 is less than the inner diameter of ferrule 130. The mode can facilitate the installation work of the optical fiber beam splitter and improve the installation efficiency.
Further, the bell 1131 of the capillary 113 is filled with a fixing glue, so as to fix the positions of the fused biconical optical fiber 111, the protecting piece 112 and the capillary 113, and the refractive index of the fixing glue is smaller than that of the cladding of the fused biconical optical fiber 111.
The arrangement mode is convenient for filling the fixing glue, and improves the filling effect and the filling efficiency of the fixing glue; in addition, the fusion-tapered optical fiber 111, the protecting member 112 and the flare 1131 of the capillary 113 have larger contact areas, so that the arrangement can obtain better gluing effect.
The refractive index of the fixing glue is smaller than that of the cladding of the fused biconical optical fiber 111, so that adverse effects of the fixing glue on optical signals in the fused biconical optical fiber 111 can be avoided.
Further, curing glue is respectively disposed between the fusion-tapered fiber pigtail 110 and the ferrule 130, between the first collimating lens 140 and the ferrule 130, between the second collimating lens 150 and the ferrule 130, and between the multicore fiber pigtail 120 and the ferrule 130, so as to fix the positions of the fusion-tapered fiber pigtail 110, the first collimating lens 140, the second collimating lens 150 and the multicore fiber pigtail 120. The curing glue can play a good role in fixing the position, and avoid the positions of the fusion tapered fiber pigtail 110, the first collimating lens 140, the second collimating lens 150 and the multi-core fiber pigtail 120 from changing in use.
In an alternative embodiment, the curing glue is preferably a UV curing glue, which has the characteristic of fast curing speed and can form a strong adhesive effect in a short time.
Further, both ends of the sleeve 130 are provided with sealant.
In an alternative embodiment, the sealant is preferably a UV-curable glue filled with quartz powder particles, which have a water-repellent effect, and which are capable of forming a strong adhesive effect in a short time.
The foregoing description is only of the preferred embodiments of the utility model, and the above-described embodiments are not intended to limit the utility model. Various changes and modifications may be made within the scope of the technical idea of the present utility model, and any person skilled in the art may make any modification, modification or equivalent substitution according to the above description, which falls within the scope of the present utility model.
Claims (8)
1. A fiber optic splitter, comprising: the optical fiber comprises a fused biconical optical fiber pigtail, a multi-core optical fiber pigtail, a sleeve, a first collimating lens and a second collimating lens;
the melting tapered optical fiber tail fiber, the first collimating lens, the second collimating lens and the multi-core optical fiber tail fiber are sequentially arranged in the sleeve along an optical path;
the fusion tapered optical fiber tail fiber is provided with a plurality of optical fiber channels, and the multi-core optical fiber tail fiber is provided with a plurality of fiber cores;
the number of the optical fiber channels is the same as that of the fiber cores of the multi-core optical fiber tail fibers, and a plurality of the optical fiber channels are coupled with a plurality of the fiber cores in a one-to-one correspondence manner.
2. The fiber optic beam splitter of claim 1, wherein the focal lengths of the first collimating lens and the second collimating lens are the same, and the focal points of the first collimating lens and the second collimating lens are both located at the center of symmetry of the first collimating lens and the second collimating lens.
3. The fiber optic splitter of claim 2, wherein a difference between an out-of-optical mode field diameter of the fusion tapered fiber pigtail and an out-of-optical mode field diameter of the multicore fiber pigtail is less than 0.5 microns.
4. The fiber optic splitter of claim 1, wherein the fusion tapered fiber pigtail comprises a fusion tapered fiber, a protector, a capillary;
the melting tapering optic fibre sets up in the capillary, melting tapering optic fibre includes coupling region and separation region, the one end of coupling region is provided with the protection piece, the capillary has the one end orientation of horn mouth the protection piece.
5. The fiber optic splitter of claim 4, wherein the capillary tube has an inner diameter greater than a maximum diameter of the melt tapered optical fiber and an outer diameter less than an inner diameter of the ferrule.
6. The fiber optic splitter of claim 4, wherein a flared mouth of the capillary is filled with a fixing glue to fix the position of the fused tapered fiber, the protector, and the capillary, the fixing glue having a refractive index less than a refractive index of a cladding of the fused tapered fiber.
7. The fiber optic splitter of any of claims 1-6, wherein a curing glue is disposed between the fusion tapered fiber pigtail and the ferrule, between the first collimating lens and the ferrule, between the second collimating lens and the ferrule, and between the multicore fiber pigtail and the ferrule, respectively, to fix the relative positions of the fusion tapered fiber pigtail, the first collimating lens, the second collimating lens, and the multicore fiber pigtail.
8. The optical fiber splitter according to any one of claims 1-6, wherein both ends of the ferrule are provided with a sealant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321710778.2U CN220171297U (en) | 2023-06-30 | 2023-06-30 | Optical fiber beam splitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321710778.2U CN220171297U (en) | 2023-06-30 | 2023-06-30 | Optical fiber beam splitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220171297U true CN220171297U (en) | 2023-12-12 |
Family
ID=89068104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321710778.2U Active CN220171297U (en) | 2023-06-30 | 2023-06-30 | Optical fiber beam splitter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220171297U (en) |
-
2023
- 2023-06-30 CN CN202321710778.2U patent/CN220171297U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100555012C (en) | The method of attachment of capillary fiber and standard fiber | |
| JPH04333808A (en) | Photosemiconductor module | |
| US5138677A (en) | Broadband optical power summer | |
| EP0600856A1 (en) | Optical fiber to rod lens joining method and interface structure | |
| US4164363A (en) | Single mode fiber-to-channel waveguide through-line coupler | |
| JPH023A (en) | Method of accessing optical fiber circuit and connector plug thereof | |
| CN108700719B (en) | Optical mode conversion using transistor profiling and ball lens | |
| JP2004213008A (en) | Method for manufacturing optical coupling device, the optical coupling device and its assembly, and lens-coupled optical fiber using the optical coupling device | |
| CN201266251Y (en) | Optical fiber collimating device | |
| US20020057873A1 (en) | Laser collimator for a free space optical link | |
| CN202837591U (en) | Diaphragm type optical fiber laser coupler | |
| CN220171297U (en) | Optical fiber beam splitter | |
| US7352937B2 (en) | Devices, systems and methods for connecting a single mode fiber to a legacy multi-mode fiber | |
| CN204790068U (en) | High -power optical collimator | |
| CN1412602A (en) | Laser collimator for free space optical connection | |
| JP2022551839A (en) | Multicore fiber and fanout assembly | |
| US6775436B1 (en) | Optical fiber U-turn apparatus and method | |
| CN106033139A (en) | Multi-core optical fiber connection structure | |
| Maejima et al. | Connection characteristics of hollow-core fiber connector | |
| Arkwright et al. | High-isolation demultiplexing in bend-tuned twin-core fiber | |
| KR100324961B1 (en) | Connecting optical fiber and its application to a fiber-optic optical waveguide | |
| CN210199350U (en) | Optical device | |
| CN211426862U (en) | Multichannel fiber connector | |
| CN216901046U (en) | Light receiving and emitting module | |
| CN215180998U (en) | High-power multi-core tail fiber and collimator thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |