CN113050232A - Optical fiber contact element and optical fiber connector - Google Patents
Optical fiber contact element and optical fiber connector Download PDFInfo
- Publication number
- CN113050232A CN113050232A CN202110315831.8A CN202110315831A CN113050232A CN 113050232 A CN113050232 A CN 113050232A CN 202110315831 A CN202110315831 A CN 202110315831A CN 113050232 A CN113050232 A CN 113050232A
- Authority
- CN
- China
- Prior art keywords
- optical fiber
- sleeve
- movable sleeve
- positioning
- contact
- 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.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/3833—Details of mounting fibres in ferrules; Assembly methods; Manufacture
- G02B6/3834—Means for centering or aligning the light guide within the ferrule
- G02B6/3843—Means for centering or aligning the light guide within the ferrule with auxiliary facilities for movably aligning or adjusting the fibre within its ferrule, e.g. measuring position or eccentricity
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/3833—Details of mounting fibres in ferrules; Assembly methods; Manufacture
- G02B6/3855—Details of mounting fibres in ferrules; Assembly methods; Manufacture characterised by the method of anchoring or fixing the fibre within the ferrule
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Coupling Of Light Guides (AREA)
Abstract
An optical fiber contact element comprises a ceramic contact pin, a tail sleeve provided with a flange plate, an optical fiber, a plurality of positioning flat plates, a movable sleeve, a spring, a clamping ring and a positioning key, wherein the positioning flat plates are arranged on the outer circumferential surface of the tail sleeve along the circumferential direction and are inwards sunken and extend along the axial direction of the tail sleeve; the optical fiber contact element can prevent the optical fiber contact element from rotating in the connector, has more stable interchangeability, completes the realization of the optical fiber core adjustment technology by adjusting the positioning key to point to the direction of the optical fiber deviating from the center of the ceramic contact pin, and can realize the butt joint of an oblique spherical surface (APC) contact pin.
Description
Technical Field
The invention belongs to the technical field of optical fiber connectors, and particularly relates to an optical fiber contact member and an optical fiber connector.
Background
Currently, the optical fiber connectors commonly used in the market and conforming to the specification of MIL-DTL-38999 and the like all use optical fiber contact members conforming to the specifications of MIL-PRF-29504/4 (pin) and MIL-PRF-29504/5 (socket), and the specific structure is shown in fig. 1.
The optical fiber contact piece is designed according to the structural size of the electric connector, is mainly applied to an optical fiber connector and a photoelectric mixed connector which meet the MIL-DTL-38999 (or GJB599) specification, and has the characteristics of simple structure, easy serialization, strong compatibility, suitability for batch production and the like. However, with the continuous emergence and application of new technologies in the optical communication industry, the following disadvantages of the optical fiber contacts developed in the early stage appear in some high-demand applications at present:
A) unstable interchangeability without preventing rotation of optical fiber contacts in connectors
The optical fiber contact member designed in the prior art has a circular structure (as shown in fig. 1), and the optical fiber connector mounting hole 203 matched with the contact member also has a circular structure (as shown in fig. 2 (a)). The optical fiber contacts of the circular structure are mounted in the mounting holes of the circular structure (as shown in fig. 2 (b)), and the mounting direction of the optical fiber contacts in the optical fiber connector will not be fixed.
In the process of connecting the optical fiber connector for many times, because the optical fiber contact member has no positioning structure for preventing rotation, the position of the optical fiber contact member in the optical fiber connector is easy to change, which can affect the butt joint state (i.e. the alignment degree of the optical fibers) of the matched optical fibers, and the phenomena of unstable interchangeability, poor repeatability and the like of the optical fiber connector are easy to occur.
B) Oblique spherical surface (APC) pin butt joint cannot be realized
Both the optical fiber contact element and the optical fiber connector designed in the prior art are circular structures without positioning (as shown in fig. 1 and fig. 2), when the contact element is contacted by using an oblique spherical surface (APC), interconnection faults can be caused because the oblique surface is not fixed, and therefore, the optical fiber contact element can only realize spherical surface (PC) contact.
With the continuous improvement of the transmission rate of the optical communication system and the increasing influence of the echo in the optical path on the transmission stability of the optical signal, the oblique spherical surface (APC) docking technology is an effective measure for eliminating the echo of the optical path, and the optical fiber contact element and the optical fiber connector designed in the prior art cannot realize the processing of the contact pin oblique spherical surface (APC) and even cannot realize the contact of the oblique spherical surface (APC) because of no positioning structure.
C) The core adjusting technology can not be adopted
The core adjusting technology is an effective process means for reducing the insertion loss of the optical fiber connector at present.
The optical fiber contact element and the optical fiber connector designed in the prior art have no structure capable of adjusting the installation direction of the optical fiber and no positioning structure of the contact element, and the insertion loss of the optical fiber connector cannot be reduced by adopting the core adjusting technology in the optical fiber contact element and the optical fiber connector.
Disclosure of Invention
The invention aims to provide an optical fiber contact element and an optical fiber connector which finish the realization of an optical fiber core adjusting technology by adjusting a positioning key to point to the direction of deviating the optical fiber from the center of a ceramic contact pin.
In order to achieve the purpose, the invention provides an optical fiber contact element which comprises a ceramic contact pin, a tail sleeve provided with a flange plate, an optical fiber, a plurality of positioning flat plates, a movable sleeve, a spring and a clamping ring, wherein the positioning flat plates are arranged on the outer circumferential surface of the tail sleeve along the circumferential direction, are sunken inwards and extend along the axial direction of the tail sleeve, the movable sleeve is sleeved on the tail sleeve, the spring is arranged between the movable sleeve and the flange plate, the clamping ring is arranged on the tail sleeve and used for preventing the movable sleeve from being separated, and a positioning key used for indicating the optical fiber to deviate from the central direction.
Preferably, the tail sleeve is provided with an annular groove for mounting the collar.
Preferably, the inner hole of the movable sleeve is provided with a plurality of inner hole flats which are matched with the positioning flats in use along the circumferential direction, so that the movable sleeve and the tail sleeve are prevented from relatively rotating to realize the rotation stopping function.
Preferably, the optical fiber connector comprises an outer shell and the optical fiber contact member mounted in the outer shell.
Preferably, the outer shell is provided with a positioning key slot which is matched with a positioning key of the movable sleeve for use so as to realize the rotation stopping function.
The invention has the following advantages:
1. the optical fiber contact element can prevent the optical fiber contact element from rotating in the connector, has more stable interchangeability, completes the realization of the optical fiber core adjustment technology by adjusting the positioning key to point to the direction of the optical fiber deviating from the center of the ceramic contact pin, and can realize the butt joint of an oblique spherical surface (APC) contact pin.
The foregoing is a summary of the present invention, and for the purpose of making clear the technical means of the present invention, the present invention can be implemented according to the content of the description, and for the purpose of making the above and other objects, features, and advantages of the present invention more comprehensible, the following preferred embodiments are described in detail:
drawings
FIG. 1a is a schematic diagram of MIL-PRF-29504/4 (pin).
FIG. 1b is a schematic of MIL-PRF-29504/5 (jack).
Fig. 2a is a schematic structural diagram of a contact mounting hole in a conventional optical fiber connector.
Figure 2b is a schematic view of a prior art fiber optic contact and connector assembly.
Figure 3 is a schematic view of a prior art fiber optic contact and connector assembly.
FIG. 4 is a perspective view of the fiber optic contact of this embodiment.
Fig. 5 is an exploded view of the fiber optic contact of this embodiment.
FIG. 6 is a cross-sectional view of the fiber optic contact of this embodiment.
Fig. 7a is a perspective view of the aft bushing of the present embodiment.
Fig. 7b is a front view of the trailing sleeve in this embodiment.
Fig. 7c is a right side view of the aft bushing of the present embodiment.
Fig. 8a is a perspective view of the slipcase of this embodiment.
Fig. 8b is a cross-sectional view of the active sheath of this embodiment.
Fig. 8c is a right side view of the condom in this embodiment.
Fig. 9a is a schematic view of the mounting hole in the present embodiment.
Fig. 9b is a cross-sectional view at a-a of fig. 9 a.
Fig. 10 is a schematic structural diagram of the optical fiber connector in this embodiment.
FIG. 11 is a schematic diagram of the operation of fiber alignment in this embodiment.
[ reference numerals ]
101-pin, 102-socket, 21-plug, 22-socket, 23-socket contact, 24-pin contact, 31-fiber contact, 32-contact mounting hole, 1-ceramic pin, 2-tail sleeve, 1101-fiber and pin gap, 701-fiber core, 702-fiber cladding, 201-positioning flat, 202-annular groove, 3-flange, 4-spring, 5-movable sleeve, 501-positioning key, 502-female flat, first step 503, 6-collar, 7-fiber, 8-shell, 801-mounting groove, 802-positioning spring, 803-second step, 804-positioning key groove,
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the intended purpose, the following detailed description of the embodiments, structures, features and effects of the optical fiber contact member and the optical fiber connector according to the present invention will be made with reference to the accompanying drawings and preferred examples.
The invention provides an optical fiber connector which comprises an outer shell and an optical fiber contact element arranged in the outer shell, please refer to fig. 4 to fig. 10, the optical fiber contact element comprises a ceramic pin 1, a tail sleeve 2 and an optical fiber 7 arranged in the tail sleeve, the tail end of the ceramic pin 1 is coaxially fixed and inserted in the tail sleeve 2, the front end of the tail sleeve 2 is provided with a flange 3 which is turned outwards, the flange and the tail sleeve 2 are of an integral structure, the outer circumferential surface of the tail sleeve 2 is provided with a plurality of positioning flat 201 which are sunken inwards along the circumferential direction, the positioning flat 201 extends along the axial direction of the tail sleeve, the tail of the tail sleeve is also provided with an annular groove 202,
the movable sleeve is characterized in that the tail sleeve 2 is sleeved with a movable sleeve 5, a spring 4 is arranged between the front end of the movable sleeve 5 and the tail end of the flange plate 3, the tail end of the tail sleeve 2 is sleeved with a clamping ring 6 for preventing the movable sleeve 5 from disengaging, the clamping ring is installed in the annular groove 202, a first step 503 is arranged on the outer circumferential surface of the movable sleeve 5, the movable sleeve is set to form a large end and a small end by the setting of the first step 503, the front end of the large end of the movable sleeve extends forwards along the axial direction to form a positioning key 501, the inner hole of the movable sleeve 5 is peach-shaped in the embodiment, the inner hole of the movable sleeve 5 is circumferentially provided with a plurality of inner hole flat 502 matched with the positioning flat, when the movable sleeve 5 is sleeved on the tail sleeve 2, the movable sleeve and the tail sleeve are prevented from rotating relative to each other under.
The number of the positioning flat is preferably controlled to be 1-8, and in the embodiment, the number of the positioning flat is 4.
In this embodiment, please refer to fig. 11 for a method for implementing alignment of an optical fiber contact:
inserting the optical fiber 7 into the tail sleeve 2 and bonding and fixing the optical fiber in the tail of the ceramic contact pin 1, after the assembly is completed, the relative position of the optical fiber and the ceramic contact pin and the relative position of the optical fiber and the flange plate are kept fixed, then the deviation of the optical fiber from the center direction of the ceramic contact pin is checked through an optical fiber core adjusting instrument, then the spring 4 and the movable sleeve 5 are sequentially installed, when the movable sleeve 5 is installed, the position of the positioning key 501 needs to be adjusted according to the deviation of the optical fiber from the center direction of the ceramic contact pin, namely, when the movable sleeve 5 is installed on the tail sleeve 2, the direction of the positioning key points to the direction of the positioning key which deviates from the center direction of the ceramic contact pin through the optical fiber, then the movable sleeve and the tail sleeve are prevented from rotating relatively through the matching of the inner hole flat 502 of the movable sleeve.
When two optical fiber contact members with the same eccentric direction are respectively installed in the plug and the socket for connection, the eccentric directions of the two optical fiber contact members are consistent, so that the alignment area of the matched optical fibers is larger, the optical leakage of the interface of the matched optical fibers is reduced, the insertion loss of the optical fiber connector can be reduced, and the interchangeability and the repeatability of the optical fiber connector can be kept to be basically stable.
The outer shell of the optical fiber connector is provided with an installation groove 801, a positioning spring 802 is installed in the installation groove 801, when the optical fiber contact element in the embodiment is installed in the installation hole of the outer shell of the optical fiber connector, one end of the positioning spring 802 abuts against the rear end of the installation groove 801, the other end abuts against the first step 503 of the movable sleeve, the front end of the large end of the movable sleeve abuts against the front end of the installation groove, and the rear end of the installation groove 801 is provided with a second step 803 for limiting the collar.
The front end of the mounting groove 801 extends forwards to form a positioning key groove 804, and when the optical fiber contact member of the embodiment is mounted in the mounting hole of the optical fiber connector outer shell, the positioning key of the movable sleeve 5 is mounted in the positioning key groove 804, so that the rotation stopping function is realized; when the adjusting sleeve is installed on the tail sleeve, the position of the adjusting sleeve on the optical fiber contact element is fixed under the matching of the positioning flat 201 and the inner hole flat 502, the direction of the positioning key is fixed, and the angle of an oblique spherical surface (APC) of the contact pin processed according to the direction of the positioning key is also fixed.
When the optical fiber contact element is installed in the optical fiber connector, under the matching action of the positioning key slot on the shell of the optical fiber connector and the positioning key of the optical fiber contact element, when 2 mutually-matched optical fiber contact elements with consistent positioning key directions are butted in the plug and the socket, the oblique spherical surface (APC) butt joint of the optical fiber contact elements can be realized
The optical fiber core adjustment technical principle is as follows:
although the fit size and tolerance of the inner hole of the ceramic contact pin and the outer circle of the optical fiber are relatively precise, because a gap exists between the inner hole of the ceramic contact pin and the outer circle of the optical fiber, when the ceramic contact pin and the optical fiber are fixedly bonded, the optical fiber cannot be exactly positioned in the center of the inner hole of the ceramic contact pin, when the optical fiber is bonded in the contact pin component, the center of the fiber core of the optical fiber and the center of the contact pin are not necessarily completely overlapped, so that the interconnection is not necessarily completely aligned, which can bring the loss of optical interconnection, in order to reduce the loss, the invention designs the assembly structure of the optical fiber connector and the contact pin component, so that the direction adjustment can be carried; the optical fiber deviation from the center direction of the ceramic contact pin is identified and calibrated by using an optical fiber core adjusting instrument, and when the optical fiber connector is respectively installed in a plug and a socket for connection, the optical fibers in inner holes of the matched ceramic contact pins of the plug and the socket keep the same center deviation position; when the optical fiber connector plug and the optical fiber connector socket are interconnected, the offset positions (i.e. offset directions) of the optical fiber cores of the optical fiber connectors are consistent, so that the radial dislocation of the optical fiber cores of the optical fiber connectors is reduced, and the insertion loss of the optical fiber connectors during active connection is reduced.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention in any way, and any simple modification, equivalent change and modification made by those skilled in the art according to the technical spirit of the present invention are still within the technical scope of the present invention without departing from the technical scope of the present invention.
Claims (5)
1. An optical fiber contact, comprising: the optical fiber positioning device comprises a ceramic contact pin, a tail sleeve provided with a flange plate, optical fibers, a plurality of positioning flat plates, a movable sleeve, a spring, a clamping ring and a positioning key, wherein the positioning flat plates are arranged on the outer circumferential surface of the tail sleeve along the circumferential direction and are inwards sunken, the positioning flat plates extend along the axial direction of the tail sleeve, the movable sleeve is sleeved on the tail sleeve, the spring is arranged between the movable sleeve and the flange plate, the clamping ring is arranged on the tail sleeve and is used for preventing the movable sleeve from being separated, and the movable sleeve.
2. The fiber optic contact of claim 1, wherein: the tail sleeve is provided with an annular groove for installing a clamping ring.
3. The fiber optic contact of claim 1, wherein: the inner hole of the movable sleeve is provided with a plurality of inner holes which are matched with the positioning flat for use along the circumferential direction, so that the movable sleeve and the tail sleeve are prevented from relatively rotating to realize the rotation stopping function.
4. An optical fiber connector, characterized by: comprising an outer housing and an optical fibre contact according to any one of claims 1 to 3 mounted in the outer housing.
5. An optical fiber connector according to claim 4, wherein: the outer shell is provided with a positioning key slot which is matched with the positioning key of the movable sleeve for use so as to realize the rotation stopping function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110315831.8A CN113050232A (en) | 2021-03-24 | 2021-03-24 | Optical fiber contact element and optical fiber connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110315831.8A CN113050232A (en) | 2021-03-24 | 2021-03-24 | Optical fiber contact element and optical fiber connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113050232A true CN113050232A (en) | 2021-06-29 |
Family
ID=76515062
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110315831.8A Pending CN113050232A (en) | 2021-03-24 | 2021-03-24 | Optical fiber contact element and optical fiber connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113050232A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113948898A (en) * | 2021-09-26 | 2022-01-18 | 中航光电科技股份有限公司 | Contact element structure of connector |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106199848A (en) * | 2016-08-31 | 2016-12-07 | 中航光电科技股份有限公司 | A kind of optical fiber connector plug |
| CN109073837A (en) * | 2016-04-14 | 2018-12-21 | 雷莫电子控股有限公司 | Optical conenctor and contact element for optical conenctor |
| CN110488425A (en) * | 2019-07-12 | 2019-11-22 | 中航光电科技股份有限公司 | Tight tube fiber contact |
| CN110515163A (en) * | 2019-07-12 | 2019-11-29 | 中航光电科技股份有限公司 | Adjustable core optical fiber contact |
| CN110609360A (en) * | 2018-09-30 | 2019-12-24 | 中航光电科技股份有限公司 | Optical fiber connector and optical fiber contact element thereof |
-
2021
- 2021-03-24 CN CN202110315831.8A patent/CN113050232A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109073837A (en) * | 2016-04-14 | 2018-12-21 | 雷莫电子控股有限公司 | Optical conenctor and contact element for optical conenctor |
| CN106199848A (en) * | 2016-08-31 | 2016-12-07 | 中航光电科技股份有限公司 | A kind of optical fiber connector plug |
| CN110609360A (en) * | 2018-09-30 | 2019-12-24 | 中航光电科技股份有限公司 | Optical fiber connector and optical fiber contact element thereof |
| CN110488425A (en) * | 2019-07-12 | 2019-11-22 | 中航光电科技股份有限公司 | Tight tube fiber contact |
| CN110515163A (en) * | 2019-07-12 | 2019-11-29 | 中航光电科技股份有限公司 | Adjustable core optical fiber contact |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113948898A (en) * | 2021-09-26 | 2022-01-18 | 中航光电科技股份有限公司 | Contact element structure of connector |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4738508A (en) | Terminated optical fiber and methods of making | |
| EP1091225B1 (en) | Optical fiber tunable connector adapter | |
| EP0203611B1 (en) | Optical fiber connectors and methods of making | |
| US4699458A (en) | Fiber optic connector | |
| US4105285A (en) | Single optical fiber connector | |
| JP2008516274A (en) | Optical fiber connector | |
| GB2097149A (en) | Apparatus for aligning an optical fiber with a collimating lens | |
| US4832435A (en) | Positioning mechanism of optical fiber connector | |
| CN113050232A (en) | Optical fiber contact element and optical fiber connector | |
| US6435730B1 (en) | Optical fiber connector with improved ferrule float feature | |
| CN111796366A (en) | Single-channel optical fiber rotary connector with long space life | |
| US7204643B2 (en) | Method of producing a receptacle-type optical connector | |
| CN111679371B (en) | Polarized light coupling connecting device | |
| JPH1090558A (en) | Optical connector for polarization maintaining optical fiber | |
| EP0628174B1 (en) | Connecting device for connection of the end portions of optical fibres | |
| CN109283630A (en) | A kind of the high duplication connect-disconnect structure and its processing method of double APC lock pin adapters | |
| CN112147745B (en) | Plastic structure adapter of light emitting assembly and manufacturing process thereof | |
| JP2002341184A (en) | Optical fiber adapter for dissimilar size ferrules | |
| CN209167591U (en) | A kind of high duplication connect-disconnect structure of double APC lock pin adapters | |
| JPH0356447B2 (en) | ||
| CN219302717U (en) | Beam expanding optical fiber assembly | |
| CN220207921U (en) | Power-resistant polarization-preserving FC optical fiber connector | |
| CN218824808U (en) | Coaxial single-mode beam expanding contact element for light output | |
| CN220983568U (en) | Receptacle contact and fiber optic contact assembly | |
| JP3160864B2 (en) | Adapter for ferrule diameter conversion of optical connector connection |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210629 |