CN210401744U - Polarization maintaining optical fiber connector and polarization maintaining optical fiber clamp - Google Patents
Polarization maintaining optical fiber connector and polarization maintaining optical fiber clamp Download PDFInfo
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- CN210401744U CN210401744U CN201920357097.XU CN201920357097U CN210401744U CN 210401744 U CN210401744 U CN 210401744U CN 201920357097 U CN201920357097 U CN 201920357097U CN 210401744 U CN210401744 U CN 210401744U
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- tail handle
- maintaining optical
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Abstract
The utility model provides a polarization maintaining optical fiber connector, including frame, inside casing, take tail handle lock pin, inlay, spring, locking seat, the tail handle of taking the tail handle lock pin passes inlay, spring and locking seat, and the front end of inside casing is equipped with the recess phase-match that sets up on lug and the inlay, takes tail handle lock pin middle part to be equipped with the inside step phase-match of annular arch and inlay, and the locking seat is fixed with the spring, the inner groovy that locking seat middle part was equipped with bulge loop and inside casing rear end matches. The utility model also provides a polarization maintaining optical fiber clamp, including base, curb plate, briquetting. The fixing of the inserting core, the optical fiber and the stopping seat of the polarization maintaining optical fiber connector is more stable, the deviation of the adjustment of the fast and slow axes of the polarization maintaining optical fiber caused by the shaking of the inserting core is prevented, and the test qualification of an ER value is ensured; ensuring that the angle deviation is less than or equal to 3 degrees and ensuring that the extinction ratio is greater than 20 Db; the transmission signal is stable, the loss is low, and the service life is long; the polarization maintaining optical fiber clamp stably fixes the polarization maintaining optical fiber connector, and the rotating insertion core tail handle adjusts the speed shaft after fixing.
Description
Technical Field
The utility model relates to a polarization maintaining optical fiber connector and anchor clamps technical field especially relate to polarization maintaining optical fiber connector and polarization maintaining optical fiber anchor clamps.
Background
Polarization maintaining optical fiber transmission lines have been widely used as polarized light devices in various fields such as aerospace, aviation, navigation, industrial technology and communication. In an interference type optical fiber sensor based on optical coherent detection, the polarization maintaining optical fiber is used to ensure that the linear polarization direction is unchanged, and the coherent signal-to-noise ratio is improved, so that high-precision measurement of physical quantity is realized. The polarization maintaining fiber is used as one special fiber and is mainly used in fiber optic gyroscope, fiber optic hydrophone, photoelectric transformer and other sensors and fiber optic communication systems, such as DWDM, EDFA and other fiber optic communication systems.
When light is transmitted in a common single-mode optical fiber, any asymmetric factors such as out-of-roundness of a fiber core and loading of external stress can introduce a birefringence effect into the optical fiber to cause optical distortion, and transmission constants of two polarization modes which are perpendicular to each other are the same. In practical optical transmission, since the external stress to which the optical fiber is subjected is constantly changing with the changes of environment and temperature, the polarization mode in the common optical fiber is unstable, which is caused by the instability of the transmission signal of the conventional SC/FC/ST/LC connector and the application of the polarization-maintaining optical fiber connector.
The existing polarization maintaining optical fiber connector is low in adjustment precision and overlarge in deviation angle, so that the extinction ratio is small, the signal transmission stability is poor, the influence of temperature change is easy to cause, the loss is high, and the service life is short. The existing polarization maintaining optical fiber clamp cannot be stably matched with a polarization maintaining optical fiber connector, and cannot realize 360-degree high-precision adjustment.
SUMMERY OF THE UTILITY MODEL
The utility model provides a polarization maintaining fiber connector and polarization maintaining fiber clamp has solved 360 high accuracy and has adjusted, prevent that the angle deviation is too big, improves the extinction ratio to transmission signal is stable, the lower technical problem of loss.
The utility model discloses a solve the technical scheme that above-mentioned problem adopted and do:
the utility model provides an aspect provides a polarization maintaining optical fiber connector, including frame, inside casing, take tail handle lock pin, inlay, spring, locking seat, the tail handle of taking the tail handle lock pin passes inlay, spring and locking seat, the front end of inside casing be equipped with the lug with the recess phase-match that sets up on the inlay, take tail handle lock pin middle part be equipped with cyclic annular protruding with the inside step phase-match of inlay, the front end internal fixation of locking seat has the spring, locking seat middle part be equipped with the bulge loop with the inner groovy of inside casing rear end matches.
Furthermore, a dustproof cap is arranged at the front end of the outer frame. Furthermore, a tail sleeve is sleeved at the rear end of the stop seat, and the tail handle with the tail handle inserting core penetrates through the tail sleeve.
Furthermore, two opposite lugs are arranged at the front end of the inner frame, and two opposite grooves matched with the two lugs are formed in the insert.
The utility model discloses another aspect provides a polarization maintaining fiber clamp for fixing polarization maintaining fiber connector, including base, curb plate, briquetting, curb plate vertical fixation is the base side, the briquetting is fixed in the curb plate lateral surface, be equipped with the first through-hole and the second through-hole of mutual intercommunication on the curb plate, be equipped with the third through-hole and the fourth through-hole of mutual intercommunication on the briquetting, the position of first through-hole and third through-hole is corresponding, and the position of second through-hole and fourth through-hole is corresponding, the area caudal peduncle lock pin of installing the mosaic in the polarization maintaining fiber connector passes second through-hole and fourth through-hole, still be equipped with the bellying in the fourth through-hole with the recess phase-match that sets up on the mosaic.
Furthermore, the tail handle with the tail handle inserting core penetrates through the insert, the spring, the stop seat and the tail sleeve, and the inner frame and the outer frame are assembled at the front end of the tail handle inserting core.
Furthermore, the lower end of the side plate is provided with a first connecting hole, the side edge of the base is provided with a second connecting hole, and the first connecting piece penetrates through the first connecting hole and the second connecting hole.
Furthermore, a third connecting hole is formed in the side plate, a fourth connecting hole is formed in the pressing block, and the second connecting piece penetrates through the third connecting hole and the fourth connecting hole.
The beneficial effects of the utility model reside in that: the core insert, the optical fiber and the stop seat of the polarization maintaining optical fiber connector provided by the utility model are more firmly fixed, so that the deviation of the adjustment of the fast and slow axes of the polarization maintaining optical fiber caused by the shaking of the core insert is prevented, and the test qualification of the ER value is ensured; in the manufacturing process of the polarization maintaining optical fiber connector, a CCD system is adopted to detect the included angle between the polarization maintaining optical fiber and a connector key or a positioning surface, a high-precision adjusting frame rotating by 360 degrees is adopted, so that the angle deviation is ensured to be less than or equal to 3 degrees, and the extinction ratio is ensured to be greater than 20 Db; the temperature-dependent variable-frequency power amplifier does not change along with the change of temperature, and has stable transmission signals, lower loss and long service life; the utility model provides a polarization maintaining optical fiber connector is fixed firmly to polarization maintaining optical fiber anchor clamps, and the fast slow axis is adjusted to rotatory lock pin caudal peduncle after the fixing. The utility model discloses a polarization maintaining optical fiber connector and polarization maintaining optical fiber clamp can bear the pulling force of certain condition, fall, twist reverse, crooked, vibrations, two 85, high low temperature circulation, high temperature and high humidity, the inspection of mechanical environment tests such as high temperature, low temperature.
Drawings
Fig. 1-1 is a schematic structural view of the polarization maintaining optical fiber connector of the present invention;
fig. 1-2, 1-3, 1-4 and 1-5 are respectively schematic structural diagrams of an inner frame, a latch core with a tail handle, an insert and a stop seat in the polarization-maintaining optical fiber connector of the present invention;
fig. 2 is a schematic diagram of a finished structure of the polarization maintaining fiber connector of the present invention;
FIG. 3-1 is a schematic view of an assembly structure of the polarization maintaining optical fiber clamp of the present invention;
FIGS. 3-2, 3-3, and 3-4 are schematic structural views of the base, the side plate, and the pressing block of the polarization maintaining optical fiber clamp of the present invention, respectively;
FIG. 4 is a schematic structural view of the polarization maintaining optical fiber clamp of the present invention;
fig. 5 is a schematic view of polarization adjustment of the polarization maintaining optical fiber connector of the present invention.
Detailed Description
The following embodiments of the present invention are specifically explained with reference to the accompanying drawings, which are used for reference and illustration only and do not limit the scope of the present invention.
As shown in fig. 1 and 2, this embodiment provides a polarization maintaining optical fiber connector, including frame 2, inside casing 3, tail handle lock pin 4, inlay 5, spring 6, stop seat 7, tail handle 42 with tail handle lock pin 4 passes inlay 5, spring 6 and stop seat 7, the front end of inside casing 3 be equipped with lug 31 with the recess 52 phase-match that sets up on inlay 5, tail handle lock pin 4 middle part be equipped with annular arch 41 with inlay 5's inside step 51 phase-match, the front end internal fixation of stop seat 7 has spring 6, stop seat 7 middle part be equipped with bulge loop 72 with the inner grove 32 of inside casing 3 rear end matches.
In this embodiment, the front end of the outer frame 2 is provided with a dust cap 1. In the embodiment, the rear end of the stop seat 7 is sleeved with a tail sleeve 8, and the tail handle 42 of the stem insert 4 with the tail handle penetrates through the tail sleeve 8.
As shown in fig. 1-2, in the present embodiment, two opposite protrusions 31 are provided at the front end of the inner frame 3, and two opposite grooves 52 matched with the two protrusions 31 are provided on the insert 5.
In the above embodiment, the two bumps 31 of the inner frame 3 are matched with the grooves 52 of the insert 5, so as to play a role of fixing the ferrule, and prevent the deviation of the fast axis and the slow axis of the polarization maintaining optical fiber caused by the shaking of the ferrule, thereby avoiding the unqualified ER value test;
as shown in fig. 1-3, in the above embodiment, the tail handle structure of the tail handle ferrule 4 has higher precision than that of a conventional tail handle, the annular protrusion 41 is matched with the inner step 51 of the insert 5, the annular protrusion 41 just abuts against the insert to play a positioning role, the lengthened tail handle 42 is matched with the spring 6 and plays a role in increasing the dispensing amount, so that the optical fiber is more stably fixed, and the tail handle 42 is also matched with a 360-degree adjusting fixture to play a role in adjusting the fast axis and the slow axis;
as shown in fig. 1-4, in the above embodiment, the inner step 51 of the insert 5 matches with the annular protrusion 41 of the SC stem-equipped ferrule 4, and the two-end grooves 52 match with the two-end protrusions 113 in the fourth through hole 112 of the polarization-maintaining fiber clamp, so as to fix the ferrule stem 42 and subsequently adjust the fast and slow axes;
as shown in fig. 1-5, in the above embodiment, the structure of the stop seat 71 matches with the spring 6 to function as a fixed spring, and the convex ring 72 in the middle of the stop seat 7 matches with the inner groove 32 of the SC inner frame 3 to function as a fixed stop seat 7 to prevent the stop seat 7 from shaking to cause shaking of the ferrule tail handle 42, thereby avoiding deviation of the ER test value;
as shown in fig. 3, another aspect of the present invention provides a polarization maintaining optical fiber clamp, including base 9, side plate 10, briquetting 11, side plate 10 is fixed at the side of base 9 perpendicularly, briquetting 11 is fixed in the lateral surface of side plate 10, be equipped with the first through-hole 103 and the second through-hole 104 that communicate each other on the side plate 10, be equipped with the third through-hole 114 and the fourth through-hole 112 that communicate each other on the briquetting 11, the position of first through-hole 103 and third through-hole 114 is corresponding, and the position of second through-hole 104 and fourth through-hole 112 is corresponding, installs insert 5 take tang lock pin 4 to pass second through-hole 104 and fourth through-hole 112, still be equipped with bellying 113 in the fourth through-hole 112 with the recess 52 phase-match that sets up on the insert 5.
In the embodiment, the tail handle 42 of the mortise with the tail handle 4 penetrates through the insert 5, the spring 6, the stop seat 7 and the tail sleeve 8, and the inner frame 3 and the outer frame 2 are assembled at the front end of the mortise with the tail handle 4.
As shown in fig. 3-2 and 3-3, in the present embodiment, the lower end of the side plate 10 is provided with a first connecting hole 101, the side of the base 9 is provided with a second connecting hole 91, and a first connecting member (not shown) passes through the first connecting hole 101 and the second connecting hole 91. The number of the first connection holes 101 and the second connection holes 91 is at least two.
As shown in fig. 3 to 4, in the present embodiment, a third connection hole 102 is formed in the side plate 10, a fourth connection hole 111 is formed in the pressing block 11, and a second connection member (not shown) passes through the third connection hole 102 and the fourth connection hole 111. The third connection hole 102 and the fourth connection hole 111 each include at least two diagonally-oriented holes.
In the above embodiment, the polarization maintaining jig base 9 is fixed on the 360 ° high-precision adjusting bracket, and the second connecting hole 91 of the side of the base 9 matches with the first connecting hole 101 of the side plate 10.
In the above embodiment, the third connecting hole 102 of the side plate 10 of the polarization maintaining clamp is matched with the fourth connecting hole 111 of the polarization maintaining pressure block 11 for fixing; the first through hole 103 of the side plate 10 is matched with the two ends of the third through hole 114 of the polarization maintaining pressing block 11, so that the adjusted fast and slow shaft inserting cores penetrate out; the second through hole 104 of the side plate 10 is matched with the fourth through hole 112 of the polarization maintaining pressing block 11, so that the insert 5 is positioned and prevented from penetrating out of the clamp.
In the above embodiment, the protrusions 113 at two ends in the fourth through hole 112 of the polarization maintaining compact fixture compact 11 are matched with the grooves 52 of the insert 5, so as to fix the insert 5, and after fixing, the tail handle 42 of the tail handle-equipped ferrule 4 is rotated to structurally adjust the fast and slow axes.
The utility model discloses polarization maintaining optical fiber connector and polarization maintaining optical fiber clamp's working process does:
as shown in fig. 3, the grinding test was consistent with the conventional SC connector and the operation was simple. When in use, the inserted core 4 with the tail handle in the figure 1 is penetrated into the polarization maintaining optical fiber and then is placed into a vertical curing furnace for curing, so that the optical fiber is ensured to be in a central position. Then matching the insert 5 in fig. 1 with the tail handle 42 of the ferrule 4 with the tail handle, as shown in fig. 2, assembling a polarization maintaining fixture according to the schematic diagram of fig. 2, as shown in fig. 3, inserting the ferrule 4 with the tail handle to be adjusted into the first through hole 103 of the side plate 10 in fig. 2, matching the grooves 52 at the two ends of the insert 5 with the protrusions 113 at the two ends in the fourth through hole 112 of the pressing block 11 of the polarization maintaining fixture, as shown in fig. 3, fixing the polarization maintaining connector of the fast and slow axes to be adjusted, which is assembled in fig. 3, on a 360-degree rotation adjusting frame, clamping the tail handle of the ferrule with the fixture, rotating an adjusting knob, making the fast and slow axes of the polarization maintaining fiber parallel and perpendicular to the thin line on the CCD film, as shown in the schematic diagram of polarization adjustment of fig. 5, setting the fast and slow axes of the polarization maintaining fiber in advance to fix the insert 5 with dry glue, and then penetrating the ferrule 4 with the tail handle out of the third through hole 114 of the pressing block 11, and (3) adding 353ND glue into the penetrated inserting core, putting the inserting core into an oven for curing for 110-degree 1h to ensure that the adhesive force between the insert 5 and the inserting core 4 with the tail handle is sufficient, and after the curing is finished, assembling the inner frame 3, the outer frame 2, the stop seat 7 and the tail sleeve 42 according to the sequence shown in the figure 1 to obtain a finished product of the SC polarization maintaining optical fiber connector as shown in the figure 4.
It should be noted that: the present embodiment is applicable to various cables with different outer diameter sizes, such as an indoor cable modified to other outer diameters (e.g. 1.6/2.0/3.0mm), and is still considered to be referred to in this patent;
if the key structure and dimensions of the above components are modified, the overall assembly structure is similar to that shown in the present embodiment, and still considered to be included in the protection scope of the present invention.
The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be equivalent replacement modes, and all are included in the scope of the present invention.
Claims (8)
1. A polarization maintaining optical fiber connector, characterized in that: including frame, inside casing, take tail handle lock pin, inlay, spring, locking seat, the tail handle of taking the tail handle lock pin passes inlay, spring and locking seat, the front end of inside casing be equipped with the lug with the recess phase-match that sets up on the inlay, take tail handle lock pin middle part be equipped with annular protruding with the inside step phase-match of inlay, the front end internal fixation of locking seat has the spring, locking seat middle part be equipped with the bulge loop with the inner groovy of inside casing rear end matches.
2. The polarization preserving fiber connector of claim 1, wherein:
and a dustproof cap is arranged at the front end of the outer frame.
3. The polarization maintaining fiber connector of claim 1 or 2, wherein:
the rear end of the stop seat is sleeved with a tail sleeve, and the tail handle with the tail handle insertion core penetrates through the tail sleeve.
4. The polarization maintaining fiber connector of claim 1 or 2, wherein:
the front end of the inner frame is provided with two opposite lugs, and the insert is provided with two opposite grooves matched with the two lugs.
5. A polarization maintaining fiber clamp for fixing the polarization maintaining fiber connector of any one of claims 1 to 4, wherein: including base, curb plate, briquetting, curb plate vertical fixation is in the base side, the briquetting is fixed in the curb plate lateral surface, be equipped with the first through-hole and the second through-hole of mutual intercommunication on the curb plate, be equipped with the third through-hole and the fourth through-hole of mutual intercommunication on the briquetting, the position of first through-hole and third through-hole is corresponding, and the position of second through-hole and fourth through-hole is corresponding, installs the tape trailer handle lock pin of mosaic in the polarization maintaining fiber connector and passes second through-hole and fourth through-hole, still be equipped with the bellying in the fourth through-hole with the recess phase-match that sets up on the mosaic.
6. The polarization maintaining fiber clamp of claim 5, wherein: the tail handle with the tail handle inserting core penetrates through the insert, the spring, the stop seat and the tail sleeve, and the inner frame and the outer frame are assembled at the front end of the tail handle inserting core.
7. The polarization maintaining fiber clamp of claim 5, wherein: the lower extreme of curb plate is equipped with first connecting hole, the side of base is equipped with the second connecting hole, first connecting piece passes first connecting hole and second connecting hole.
8. The polarization maintaining fiber clamp of claim 5, wherein: the side plate is provided with a third connecting hole, the pressing block is provided with a fourth connecting hole, and the second connecting piece penetrates through the third connecting hole and the fourth connecting hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920357097.XU CN210401744U (en) | 2019-03-20 | 2019-03-20 | Polarization maintaining optical fiber connector and polarization maintaining optical fiber clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920357097.XU CN210401744U (en) | 2019-03-20 | 2019-03-20 | Polarization maintaining optical fiber connector and polarization maintaining optical fiber clamp |
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| Publication Number | Publication Date |
|---|---|
| CN210401744U true CN210401744U (en) | 2020-04-24 |
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| CN201920357097.XU Active CN210401744U (en) | 2019-03-20 | 2019-03-20 | Polarization maintaining optical fiber connector and polarization maintaining optical fiber clamp |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111834797A (en) * | 2020-07-16 | 2020-10-27 | 武汉驿路通科技股份有限公司 | Angle-adjustable FC connector assembly and assembling method thereof |
| CN113820795A (en) * | 2021-09-27 | 2021-12-21 | 衡东光通讯技术（深圳）有限公司 | LC type polarization maintaining connector |
| CN117289406A (en) * | 2023-10-07 | 2023-12-26 | 洛阳万山电子科技有限公司 | Rotary lock pin polarization maintaining connector |
-
2019
- 2019-03-20 CN CN201920357097.XU patent/CN210401744U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111834797A (en) * | 2020-07-16 | 2020-10-27 | 武汉驿路通科技股份有限公司 | Angle-adjustable FC connector assembly and assembling method thereof |
| CN111834797B (en) * | 2020-07-16 | 2022-04-12 | 武汉驿路通科技股份有限公司 | Angle-adjustable FC connector assembly and assembling method thereof |
| CN113820795A (en) * | 2021-09-27 | 2021-12-21 | 衡东光通讯技术（深圳）有限公司 | LC type polarization maintaining connector |
| CN117289406A (en) * | 2023-10-07 | 2023-12-26 | 洛阳万山电子科技有限公司 | Rotary lock pin polarization maintaining connector |
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