CN207473120U - The nozzle encapsulation of High Extinction Ratio polarization-maintaining equipment - Google Patents
The nozzle encapsulation of High Extinction Ratio polarization-maintaining equipment Download PDFInfo
- Publication number
- CN207473120U CN207473120U CN201721625715.1U CN201721625715U CN207473120U CN 207473120 U CN207473120 U CN 207473120U CN 201721625715 U CN201721625715 U CN 201721625715U CN 207473120 U CN207473120 U CN 207473120U
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- nozzle
- optical fiber
- casing
- plane
- encapsulation
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Abstract
The utility model discloses a kind of nozzle encapsulation of High Extinction Ratio polarization-maintaining equipment, the encapsulation is arranged on the optical fiber near polarization-maintaining device protection pipe, it is characterised in that：The encapsulation includes casing, and described sleeve pipe is socketed on optical fiber, sets quick setting cement in outside of sleeve, the quick setting cement coats bushing head completely, and described sleeve pipe end set inclined-plane, the inclined-plane is by the inward-facing lower face for tilting to casing of sleeve upper end.Described sleeve pipe sets two groups, and two groups of casings are arranged in parallel, and the inclined-plane on two groups of casings is oppositely arranged, and Protection glue is set at protection pipe nozzle, and nozzle is filled up completely by the Protection glue, and quick setting cement is in contact with Protection glue.The utility model is compared with prior art; it sets inclined-plane on casing; increase the relative distance between casing; so as to reduce the pressure differential of glue pressure applied generation; so as to improve the extinction ratio of optical fiber; optical fiber surface still sleeve is protected simultaneously, and the service life of optical fiber is sufficiently ensured.
Description
Technical field
The utility model is related to a kind of nozzle encapsulating structure of element, it is optical fibre polarization-maintaining equipment protection pipe pipe specifically
The encapsulating structure of mouth.
Background technology
Polarization-maintaining device over time with structure constantly weed out the old and bring forth the new by its type, and common polarization-maintaining device has polarization-maintaining
Connector, collimator of PMF, polarization-maintaining are closed（Point）Wave device etc., one most important parameter of polarization-maintaining device are its extinction ratio, delustring
Than bigger, then the interference that device receives is smaller, and the error of signal transmission is also smaller.The many because being known as of device extinction ratio are influenced,
The initial extinction ratio of such as light source, angular error, in daily production, the extinction ratio of identical multiport product also has larger difference
Away from, it is more much lower than the product extinction ratio for not using casing using the product of ferrule, main reason is that ferrule
For the glue laid between interior there are larger pressure differential, these pressure differentials enable ferrule that slight deformation occurs, and then carry out
Polarization maintaining optical fibre in casing, if not adding ferrule, the service life of optical fiber can drastically shorten.There is an urgent need for a kind of completely new at present
Structure solve the above problems.
Invention content
A kind of nozzle the purpose of this utility model is to provide polarization-maintaining equipment with High Extinction Ratio is encapsulated on to solve
The problem of stating.
The utility model is realized using following technological means：A kind of nozzle encapsulation of High Extinction Ratio polarization-maintaining equipment, the envelope
Dress is arranged on the optical fiber near polarization-maintaining device protection pipe, it is characterised in that：The encapsulation includes casing, and described sleeve pipe is socketed in light
On fibre, quick setting cement is set in outside of sleeve, the quick setting cement coats bushing head completely, and described sleeve pipe end set is oblique
Face, the inclined-plane is by the inward-facing lower face for tilting to casing of sleeve upper end.
Described sleeve pipe sets two groups, and two groups of casings are arranged in parallel, and the inclined-plane on two groups of casings is oppositely arranged,
The inclined-plane inclination angle is 10 ° -15 °, and Protection glue is set at protection pipe nozzle, and the Protection glue is complete by nozzle
Filling, quick setting cement are in contact with Protection glue, protection pipe diameter 0.9mm.
Compared with prior art, it sets inclined-plane on casing, increase between casing it is opposite away from
From so as to reduce the pressure differential of glue pressure applied generation, so as to improve the extinction ratio of optical fiber, while optical fiber surface
Still sleeve is protected, and the service life of optical fiber is sufficiently ensured.
Description of the drawings
FIG. 1 is a schematic structural view of the utility model.
Wherein 1- optical fiber, 2- casings, 3- quick setting cements, 4- Protection glues.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawings of the specification：
The utility model is related to a kind of encapsulating structures, are a kind of nozzles of the polarization-maintaining equipment of High Extinction Ratio specifically
Encapsulating structure is arranged on the optical fiber at polarization-maintaining equipment protection pipe nozzle, will be near polarization-maintaining equipment nozzle using encapsulating structure
Optical fiber be packaged fixation.
Specifically, the encapsulating structure includes casing 2, and 2 quantity of described sleeve pipe is according to the light stretched out at protection pipe nozzle
Fine 1 number and determine, it is however generally that, double-fiber is set at nozzle, i.e. casing 2 sets 2, and 2 casings 2 are arranged in parallel, outside casing 2
Quick setting cement 3 is laid, 2 outside complete wetting of casing is formed a bullet by quick setting cement 3 outside casing 2, bullet
Bottom is connected in the protection pipe of polarization-maintaining equipment, and by above structure, the relative position of casing 2 is fixed, and then is ensured
1 position of optical fiber in casing 2 is constant.
Unlike the prior art, the end set of the casing 2 in the utility model inclined-plane, the inclined-plane is from casing
2 top is obliquely extended the bottom end until casing 2, and extending direction can be outside, can also be inside, the inclination angle on inclined-plane between
Between 10 ° -15 °, in other words, that is, the end of casing 2 cut a part, and the portion that two casings 2 are cut by oblique
Divide and be oppositely arranged.For casing 2 after being cut after being glued, quick setting cement 3 can fill up the cut part of casing 2, this
Sample quick setting cement 3 can more smoothly enter the position between two casings 2, and the pressure differential arround casing 2 reaches minimum, from
And the deformation values of casing 2 reach minimum, for optical fiber 1 without apparent deformation, extinction ratio is unaffected.
In the utility model, Protection glue 4 is set at the nozzle of protection pipe, Protection glue 4 is protected for closing polarization-maintaining device
The nozzle of pipe enables polarization-maintaining equipment integrally keep closed.Further, the quick setting cement 3 is arranged in Protection glue 4,
By quick setting cement 3 be arranged in Protection glue 4 first its give quick setting cement 3 one larger bonding contact surface, enable quick setting cement 3
Bonding it is more firm；The usage amount of quick setting cement 3, quick-drying can be reduced to the greatest extent by carrying out bonding secondly with Protection glue 4
Glue 3 only needs casing cladding purpose can be realized；Again quick setting cement 3 be bonded in Protection glue 4 can enable fixed optical fiber 1 with
The relative position of casing 2 is constant, so as to ensure that the extinction ratio of optical fiber is unaffected.
In the utility model, the protection pipe diameter 0.9mm, protection pipe size is utmostly controlled, with optical fiber device
The trend toward miniaturization of part is adapted.
Claims (4)
1. a kind of nozzle encapsulation of High Extinction Ratio polarization-maintaining equipment, the encapsulation are arranged on the optical fiber near polarization-maintaining device protection pipe,
It is characterized in that：The encapsulation includes casing, and described sleeve pipe is socketed on optical fiber, and quick setting cement is set in outside of sleeve, described
Quick setting cement coats bushing head completely, described sleeve pipe end set inclined-plane, and the inclined-plane is by sleeve upper end towards tilted
To the lower face of casing.
2. nozzle encapsulation according to claim 1, it is characterised in that：Described sleeve pipe sets two groups, and two groups of casings are parallel to be set
It puts, the inclined-plane on two groups of casings is oppositely arranged.
3. nozzle encapsulation according to claim 1, it is characterised in that：The inclined-plane inclination angle is 10 ° -15 °.
4. nozzle encapsulation according to claim 1, it is characterised in that：Protection glue, the guarantor are set at protection pipe nozzle
Nozzle is filled up completely by shield glue, and quick setting cement is in contact with Protection glue, protection pipe diameter 0.9mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721625715.1U CN207473120U (en) | 2017-11-29 | 2017-11-29 | The nozzle encapsulation of High Extinction Ratio polarization-maintaining equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721625715.1U CN207473120U (en) | 2017-11-29 | 2017-11-29 | The nozzle encapsulation of High Extinction Ratio polarization-maintaining equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207473120U true CN207473120U (en) | 2018-06-08 |
Family
ID=62260028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721625715.1U Active CN207473120U (en) | 2017-11-29 | 2017-11-29 | The nozzle encapsulation of High Extinction Ratio polarization-maintaining equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207473120U (en) |
-
2017
- 2017-11-29 CN CN201721625715.1U patent/CN207473120U/en active Active
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