CN211318823U - Beam expanding optical fiber adapter - Google Patents
Beam expanding optical fiber adapter Download PDFInfo
- Publication number
- CN211318823U CN211318823U CN201922004449.6U CN201922004449U CN211318823U CN 211318823 U CN211318823 U CN 211318823U CN 201922004449 U CN201922004449 U CN 201922004449U CN 211318823 U CN211318823 U CN 211318823U
- Authority
- CN
- China
- Prior art keywords
- core
- diameter section
- optical fiber
- fiber
- sleeve
- 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
Images
Landscapes
- Mechanical Coupling Of Light Guides (AREA)
Abstract
The utility model discloses a beam expanding optical fiber adapter, which comprises a base, a tail sleeve, a sleeve and a ferrule; the base is connected with the tail sleeve; the sleeve is arranged in the base, and a through cavity is arranged inside the base and the sleeve; the insert core is arranged in the through cavity, and a beam expanding optical fiber is arranged in the insert core; the beam expanding optical fiber is divided into a fiber core, a cladding and a coating layer from inside to outside, the refractive index of the fiber core is smaller than that of the cladding, and the refractive index of the cladding is smaller than that of the coating layer; the fiber core is integrally formed by a small core diameter section, a transition core section and a large core diameter section, and the outer diameters of the small core diameter section and the large core diameter section are sequentially increased. The utility model discloses a lock pin and the design of the optic fibre of expanding the beam realize the coupling between the optic fibre of different diameters and connect, compare in prior art, the utility model discloses effectively improve optic fibre coupling efficiency, reduced signal loss, communication effect is good.
Description
Technical Field
The utility model relates to an optical fiber communication technical field especially relates to a beam expanding optical fiber adapter.
Background
The optical fiber communication is to carry out information interaction by transmitting information through optical fibers, namely, the optical fibers are used as transmission media to realize the transmission of data and signals; compared with the traditional communication transmission mode, the optical fiber transmission mode has the advantages of wide frequency band, small attenuation, strong interference resistance, high safety performance, small size, light weight and the like, so that the optical fiber transmission mode has incomparable advantages in application scenes such as long-distance transmission, special environment transmission and the like, and further the application range of the optical fiber transmission mode is greatly promoted.
At present, in the process of signal transmission through optical fiber transmission for signal interaction, because the transmission capacity and the transmission speed of signals are different, multiple sections of optical fibers with different diameters are generally adopted for transmission in consideration of cost, and coupling connection is realized between the optical fibers with different diameters through an optical fiber adapter, but the existing optical fiber adapter has low optical fiber coupling efficiency due to the structural design problem.
Accordingly, the prior art is deficient and needs improvement.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the not enough of prior art, provide a beam expanding fiber adapter.
The technical scheme of the utility model as follows: an expanded beam fiber optic adapter comprising: the base, the tail sleeve, the sleeve and the inserting core; the base is connected with the tail sleeve; the sleeve is arranged in the base, a through cavity is arranged inside the base and the sleeve, the ferrule is arranged in the through cavity, a beam expanding optical fiber is arranged in the ferrule and is divided into a fiber core, a cladding and a coating layer from inside to outside, the refractive index of the fiber core is smaller than that of the cladding, and the refractive index of the cladding is smaller than that of the coating layer; the fiber core comprises a small core diameter section, a transition core section and a large core diameter section which are integrally formed, and the outer diameters of the small core diameter section and the large core diameter section are sequentially increased.
Preferably, the ferrule is divided into a coupling end provided with a coupling surface and a butt end provided with a butt surface, the butt end is installed in the through cavity, and the coupling end extends outwards out of the through cavity; the large core diameter section is arranged at the coupling end and is in coupling connection with the transmission optical fiber through the coupling surface; the small core diameter section is arranged at the butt joint end, and the small core diameter section is in coupling connection with another transmission optical fiber through the butt joint face.
Preferably, the difference of the back scattering attenuation coefficients measured at the two end parts of the beam expanding optical fiber is less than or equal to 0.03 db/km;
the warping degree of the beam expanding optical fiber measured by the diameter is more than or equal to 4 m;
the breaking force of any section of the beam expanding optical fiber is more than or equal to 40N.
Preferably, the small core diameter section has a diameter of 9 μm;
the diameter of the large core diameter section is 50-62.5 mu m;
the length of the transition core section is preferably 4mm to 10 mm.
Preferably, the sleeve is a ceramic sleeve;
the core insert is a ceramic core insert.
By adopting the scheme, the utility model discloses following beneficial effect has:
the utility model discloses lock pin and the design of expanding the optical fiber realize the coupling connection between the optic fibre of different diameters, compare in prior art, the utility model discloses effectively improve optic fibre coupling efficiency, reduced signal loss, communication effect is good.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a cross-sectional view of the beam expanding fiber adapter of the present invention;
FIG. 2 is a cross-sectional view of the expanded beam fiber of FIG. 1.
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1 to 2, the utility model provides a beam expanding optical fiber 5 adapter, which comprises a base 1, a tail sleeve 2, a sleeve 3 and a ferrule 4; the base 1 is connected with the tail sleeve 2; the sleeve 3 is arranged in the base 1, specifically, the sleeve 3 is a ceramic sleeve 3, and a through cavity is arranged inside the base 1 and the sleeve 3; the ferrule 4 is installed in the through cavity, specifically, the ferrule 4 is a ceramic ferrule 4, and a beam expanding optical fiber 5 is arranged in the ferrule 4; the beam expanding optical fiber 5 is divided into a fiber core, a cladding and a coating layer from inside to outside, the refractive index of the fiber core is smaller than that of the cladding, and the refractive index of the cladding is smaller than that of the coating layer; the fiber core is integrally formed by a small core diameter section 6, a transition core section and a large core diameter section 7, the outer diameters of the small core diameter section 6 and the large core diameter section 7 are sequentially increased, specifically, the diameter of the small core diameter section 6 is preferably 9 micrometers, the diameter of the large core diameter section 7 is preferably 50-62.5 micrometers, and the length of the transition core section is preferably 4-10 mm;
the ferrule 4 is divided into a coupling end with a coupling surface and a butt joint end with a butt joint surface, the butt joint end is arranged in the through cavity, the coupling end extends out of the through cavity, the large core diameter section 7 is arranged at the coupling end, the large core diameter section 7 is in coupling connection with one transmission optical fiber through the coupling surface, the small core diameter section 6 is arranged at the butt joint end, and the small core diameter section 6 is in coupling connection with the other transmission optical fiber through the butt joint surface;
the difference of backscattering attenuation coefficients measured at two end parts of the beam expanding optical fiber 5 is less than or equal to 0.03db/km, the warping degree measured by the diameter of the beam expanding optical fiber 5 is more than or equal to 4m, and the breaking force of any section of the beam expanding optical fiber 5 is more than or equal to 40N.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model discloses lock pin and the design of expanding the optical fiber realize the coupling connection between the optic fibre of different diameters, compare in prior art, the utility model discloses effectively improve optic fibre coupling efficiency, reduced signal loss, communication effect is good.
The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (5)
1. An expanded beam fiber optic adapter, comprising: the base, the tail sleeve, the sleeve and the inserting core; the base is connected with the tail sleeve; the sleeve is arranged in the base, a through cavity is arranged inside the base and the sleeve, the ferrule is arranged in the through cavity, a beam expanding optical fiber is arranged in the ferrule and is divided into a fiber core, a cladding and a coating layer from inside to outside, the refractive index of the fiber core is smaller than that of the cladding, and the refractive index of the cladding is smaller than that of the coating layer; the fiber core comprises a small core diameter section, a transition core section and a large core diameter section which are integrally formed, and the outer diameters of the small core diameter section and the large core diameter section are sequentially increased.
2. The expanded beam fiber adapter according to claim 1, wherein the ferrule is divided into a coupling end having a coupling surface and a mating end having a mating surface, the mating end being mounted within the through cavity, the coupling end extending outwardly out of the through cavity; the large core diameter section is arranged at the coupling end and is in coupling connection with the transmission optical fiber through the coupling surface; the small core diameter section is arranged at the butt joint end, and the small core diameter section is in coupling connection with another transmission optical fiber through the butt joint face.
3. The expanded beam fiber adapter of claim 1, wherein the difference in the backscatter attenuation coefficients measured at the two ends of the expanded beam fiber is no greater than 0.03 db/km;
the warping degree of the beam expanding optical fiber measured by the diameter is more than or equal to 4 m;
the breaking force of any section of the beam expanding optical fiber is more than or equal to 40N.
4. The expanded beam fiber adapter according to claim 1, wherein the small core diameter section has a diameter of 9 μ ι η;
the diameter of the large core diameter section is 50-62.5 mu m;
the length of the transition core section is 4 mm-10 mm.
5. The expanded beam fiber optic adapter according to claim 1, wherein the ferrule is a ceramic ferrule;
the core insert is a ceramic core insert.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922004449.6U CN211318823U (en) | 2019-11-19 | 2019-11-19 | Beam expanding optical fiber adapter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922004449.6U CN211318823U (en) | 2019-11-19 | 2019-11-19 | Beam expanding optical fiber adapter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211318823U true CN211318823U (en) | 2020-08-21 |
Family
ID=72080448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922004449.6U Active CN211318823U (en) | 2019-11-19 | 2019-11-19 | Beam expanding optical fiber adapter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211318823U (en) |
-
2019
- 2019-11-19 CN CN201922004449.6U patent/CN211318823U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7267494B2 (en) | Fiber stub for cladding mode coupling reduction | |
| JP2572402B2 (en) | Access method for optical fiber line and connector plug thereof | |
| CN102455462A (en) | Multimode optical fiber insensitive to bending loss | |
| CA2431551A1 (en) | Large effective area optical fiber | |
| CN111273394B (en) | Multi-core multimode optical fiber | |
| CN107272115B (en) | Mode multiplexer/demultiplexer based on three-core optical fiber | |
| US6467969B1 (en) | Article comprising a multimode optical fiber coupler | |
| JPWO2008044600A1 (en) | Optical fiber and optical fiber transmission line | |
| CN102904641A (en) | A communication system based on few-mode fiber | |
| CN101893733A (en) | Optical fiber | |
| CN211318823U (en) | Beam expanding optical fiber adapter | |
| JP5478116B2 (en) | Optical fiber | |
| CN111897045B (en) | Anti-bending multi-core optical fiber | |
| CN209446817U (en) | Crosstalk multi-core optical fiber between a kind of low core | |
| WO2021147326A1 (en) | Optical fiber connection structure and optical fiber connection assembly | |
| CN102122991B (en) | A fiber optic communication system | |
| CN103323907A (en) | Bend-resistant multimode optical fiber and optical system | |
| JPS62184406A (en) | Light signal transmitter and receiver | |
| CN104297860A (en) | Single-mode fiber connector | |
| CN204855876U (en) | Fiber connector overlaps pipe shell | |
| CN113589422A (en) | Easily-identified multi-core optical fiber | |
| US20190339454A1 (en) | Mmf optical mode conditioning device | |
| CN212321904U (en) | Optical fiber flange | |
| CN216248424U (en) | Ultra-low loss optical fiber jumper wire | |
| CN104765105A (en) | Mechanical transfer (MT) inserting core and single mode fiber connector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |