CN201654284U - Protection structure of optical fiber air tightness assembly - Google Patents
Protection structure of optical fiber air tightness assembly Download PDFInfo
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- CN201654284U CN201654284U CN2010201855790U CN201020185579U CN201654284U CN 201654284 U CN201654284 U CN 201654284U CN 2010201855790 U CN2010201855790 U CN 2010201855790U CN 201020185579 U CN201020185579 U CN 201020185579U CN 201654284 U CN201654284 U CN 201654284U
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- optical fiber
- impermeability
- protection
- protective casing
- protection structure
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Abstract
The utility model provides a protection structure of an optical fiber air tightness assembly. The protection structure comprises an air tightness assembly body, a bare optical fiber, a protection sleeve and a protection glue, wherein the two ends of the air tightness assembly body are respectively provided with outlets; the bare optical fiber extends out from the outlets; the protection sleeve is fixed at the outlet parts and sheathed on the bare optical fiber; the protection glue is filled between the protection sleeve and the outlets. The optical fiber can be effectively protected by the protection sleeve. The optical fiber is protected from potential damage due to bending, swinging, etc in product transferring, operation, use, transport, etc processes, or protected from damage due to concentrated stress action, so product yield rate is improved, and product service life is extended.
Description
Technical field
The utility model relates to optical fiber technology, relates in particular to a kind of protection structure of optical fiber impermeability assembly.
Background technology
Optical fiber impermeability assembly needing to be widely used in the optoelectronic module of sealed package, and to realize being tightly connected between optical fiber and the module package housing, this connected mode is generally the scolder welding.Have short time high temperature in the welding process, under the pb-free solder situation, temperature can be up to more than 200 degree.Therefore higher to the performance requirement of optical fiber impermeability assembly withstand high temperatures.
Fig. 1 is the structural representation of typical optical fiber impermeability subassembly product.Often because the restriction of size and applied environment, optical fiber need be the form of bare fibre, or a certain at least side be bare fibre form, bare fibre 103 as shown in Figure 1.Usually also can between bare fibre 103 and impermeability component body 101, fill a kind of protection glue 102; it can be all kinds of adhesives of ultra-violet curing, temperature-sensitive curing, normal temperature cure etc.; solidifying the back is the end with the impermeability component body; on bare fibre, form envelope, bare fibre is formed support and protection.
Fig. 2 is the structural representation of bare fibre.Bare fibre has only one deck coat 101 outside covering 102, use single-mode fiber such as communication, and bare fibre coat external diameter is 0.25mm.The fibre core 103 of optical fiber and covering 102 are glass material, and characteristic is crisp, are being subjected to overflexing or are suffering concentrated stress to do the time spent, are easy to produce damage.Even very trickle damage, in the subsequent applications process, as time passes or environmental change, this trickle damage meeting is constantly extended, is enlarged, and makes properties of product worsen, even loses efficacy.
Usually, the producer improves protection to bare fibre, the generation of pre-antisitic defect by selecting suitable protection glue and suitable some glue/curing process.The form of typical protection glue can be referring to Fig. 1.Fig. 3 shows the form of the protection glue after a kind of the improvement.After the improvement, the length that protection glue 302 is overlayed on the bare fibre 303 prolongs to some extent, and its envelope presents taper, to slow down the transition of protection glue fringe region.But in order to tolerate the high temperature in the optical fiber impermeability component application; protection glue common intensity is stronger, and hardness is higher, concentrated stress effect or still existed by the problems such as strong center of effort after bending when optical fiber; protective effect to bare fibre is more limited, still has certain impaired probability.For example, through cripping test shown in Figure 4 (point of application is apart from bare fibre exit 20～30mm, optical fiber bending angle 45 degree), slightly damaged can take place in bare fibre.
The utility model content
Above-mentioned deficiency at prior art; the utility model provides a kind of protection structure of optical fiber impermeability assembly in order to effective protection bare fibre; avoid bare fibre to bear the concentrated stress effect; and allow crooked within the specific limits bare fibre and injury-free, thereby improve the product yield, prolong life of product.The protection structure of this optical fiber impermeability assembly comprises: the impermeability component body, and the two ends of described impermeability component body have the exit respectively; Bare fibre extends from described exit; Protective casing is fixed in described exit and entangles described bare fibre; And protection glue, be filled between described protective casing and the described exit.
According to preferred embodiment, in above-mentioned protection structure, the surface-coated of described impermeability component body has the coating of gold or tin.
According to preferred embodiment, in above-mentioned protection structure, described protection glue forms the envelope structure in the root outside of described protective casing.
According to preferred embodiment, in above-mentioned protection structure, described bare fibre is simple optical fiber, multifiber or ribbon fiber.
According to preferred embodiment, in above-mentioned protection structure, the shape of described protective casing is tubulose, flat, ellipticity or taper.
According to preferred embodiment, in above-mentioned protection structure, described protective casing be shorter in length than bare fibre, the maximum outside diameter of described protective casing can make described bare fibre pass through less than the maximum outside diameter of described impermeability component body and the internal diameter of described protective casing.
In the structure of the present utility model; between bare fibre and protection glue, increase protective casing; can effectively protect optical fiber; prevent optical fiber in processes such as product turnover, operation, use, transportation owing to the latent lesion that is produced such as bend, wave; avoid optical fiber to suffer the concentrated stress effect and damaged; thereby improve the product yield, prolong life of product
Should be appreciated that the above generality of the utility model is described and the following detailed description all is exemplary and explanat, and be intended to provide further explanation for as claimed in claim the utility model.
Description of drawings
Comprise that accompanying drawing is for providing the utility model further to be understood, they are included and are constituted the application's a part, and accompanying drawing shows embodiment of the present utility model, and play the effect of explaining the utility model principle with this instructions.In the accompanying drawing:
Fig. 1 shows the structural representation of typical optical fiber impermeability subassembly product.
Fig. 2 shows the cut-open view of bare fibre.
Fig. 3 shows the synoptic diagram of the protection glue form after a kind of the improvement.
Fig. 4 shows the synoptic diagram of optical fiber cripping test.
Fig. 5 shows the synoptic diagram according to the protection structure of optical fiber impermeability assembly of the present utility model.
Fig. 6 a, Fig. 6 b and Fig. 7 show the synoptic diagram of two kinds of protective casings.
Fig. 8 shows the flow sheet according to optical fiber impermeability assembly of the present utility model.
Embodiment
Now embodiment of the present utility model will be described with reference to the drawings in detail.
Fig. 5 shows the protection structure according to optical fiber impermeability assembly of the present utility model.As shown in Figure 5, the protection structure of this optical fiber impermeability assembly comprises impermeability component body 501, protection glue 502, bare fibre 503 and protective casing 504.
But the material of this impermeability component body 501 can be metal materials such as stainless steel or valve, also can be nonmetallic materials such as pottery.The shape of this impermeability component body 501 can be circle, and perhaps oval, perhaps other are suitable for the Any shape of its application, and the surface of this body coating such as gold or tin that can be covered, in order to strengthen weldability.
As shown in Figure 5, this bare fibre 503 extends from the exit at impermeability component body 501 two ends.Be with protective casing 504 on the bare fibre 503.Simultaneously, this protective casing 504 is fixed in the exit of impermeability component body 501.Protection glue 502 is filled between protective casing 504 and the above-mentioned exit, and forms envelope in the root outside of protective casing 504.
The protection glue 502 that is adopted in the utility model can be all kinds of adhesives of ultra-violet curing, temperature-sensitive curing, normal temperature cure etc., protective casing 504 formed supports and protective effect, and the humiture requirement that can bear optical fiber impermeability component application environment.Bare fibre 503 can be simple optical fiber, multifiber or ribbon fiber.
In addition, protective casing 504 can be any material that can play buffering and protective action, as TPFE, Hytrel, PVC, LSZH all types of plastic or rubber; Shape can be tubulose or taper, shown in Fig. 6 a, 6b and 7; Its size can be determined according to the type of optical fiber impermeability assembly, but its length is no more than the length of bare fibre usually, with＜20mm is good, and is best between 0.5～10mm; Its maximum outside diameter is less than the maximum outside diameter of described impermeability component body; Its internal diameter can guarantee that described bare fibre passes through smoothly.
Fig. 8 schematically shows the production run according to optical fiber impermeability assembly of the present utility model.
In step 801, prepare bare fibre.This step comprises according to the assigned address of product specification requirement at bare fibre, divests the coat of designated length, exposes clad section, hereinafter referred to as " naked fine window ".
In step 802, the welding airtightness assembly.This step comprises: finish fixing between single bare fibre and the impermeability component body, adopt metallization welding or low temperature glass welding manner usually.If adopt the metallization welding, at first need metallize gold-plated the making it of the naked fine window of first step processing, by brazing metal metallized naked fine window of this section and impermeability component body are welded together then; If adopt the low temperature glass welding, optical fiber need not metallization, directly with low temperature glass solder naked fine window and impermeability component body is welded together.
In step 803, the assembling protective casing.This step comprises: put a segment protect sleeve pipe on bare fibre, be placed on the exit of impermeability component body.The shape and size of protective casing can comprehensively be determined according to the size of impermeability component body, the radical of optical fiber, many-sided factors such as applied environment of impermeability subassembly product.Fig. 6 and Fig. 7 are respectively the synoptic diagram of two kinds of protection tubes, and wherein Fig. 6 a and 6b show a tubulose protective casing; Fig. 7 shows the taper protective casing.Traditional impermeability subassembly product does not have the operation of this step.
In step 804, add protection glue and curing.This step comprises: fill protection glue between protective casing and impermeability component body, and make its root outside at protective casing form envelope.Attention except protect cover pillar bottom allow a small amount of protection glue make it with bare fibre fixing, do not allow protection glue in the protective casing.This protection glue can be that normal temperature cure or temperature-sensitive are solidified or the adhesive of ultra-violet curing, can bear the high temperature of 300 degree after the curing and does not soften or chap or other are unusual.
Use the protective casing of external diameter 0.9mm, internal diameter 0.5mm, length 7mm; utilize the low temperature glass welding manner; make a collection of simple optical fiber impermeability assembly with present embodiment; and through the optical fiber cripping test; simultaneously sample is carried out high-temperature baking and temperature cycling test; there is no the impaired situation of bare fibre, prove that structure of the present utility model can effectively protect optical fiber.
Those skilled in the art can be obvious, can carry out various modifications and variations and not depart from spirit and scope of the present utility model above-mentioned exemplary embodiment of the present utility model.Therefore, be intended to make the utility model to cover to drop in appended claims and the equivalence techniques scheme scope thereof to modification of the present utility model and modification.
Claims (6)
1. the protection structure of an optical fiber impermeability assembly is characterized in that, described protection structure comprises:
The impermeability component body, the two ends of described impermeability component body have the exit respectively;
Bare fibre extends from described exit;
Protective casing is fixed in described exit and entangles described bare fibre; And
Protection glue is filled between described protective casing and the described exit.
2. protection structure as claimed in claim 1 is characterized in that the surface-coated of described impermeability component body has the coating of gold or tin.
3. protection structure as claimed in claim 1 is characterized in that, described protection glue forms the envelope structure in the root outside of described protective casing.
4. protection structure as claimed in claim 1 is characterized in that, described bare fibre is simple optical fiber, multifiber or ribbon fiber.
5. protection structure as claimed in claim 1 is characterized in that, the shape of described protective casing is tubulose, flat, ellipticity or taper.
6. protection structure as claimed in claim 1; it is characterized in that; described protective casing be shorter in length than bare fibre, the maximum outside diameter of described protective casing can make described bare fibre pass through less than the maximum outside diameter of described impermeability component body and the internal diameter of described protective casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201855790U CN201654284U (en) | 2010-04-22 | 2010-04-22 | Protection structure of optical fiber air tightness assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201855790U CN201654284U (en) | 2010-04-22 | 2010-04-22 | Protection structure of optical fiber air tightness assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201654284U true CN201654284U (en) | 2010-11-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201855790U Expired - Lifetime CN201654284U (en) | 2010-04-22 | 2010-04-22 | Protection structure of optical fiber air tightness assembly |
Country Status (1)
| Country | Link |
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| CN (1) | CN201654284U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112346180A (en) * | 2019-08-09 | 2021-02-09 | 汇聚科技（惠州）有限公司 | Method for packaging optical fiber and metal part |
-
2010
- 2010-04-22 CN CN2010201855790U patent/CN201654284U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112346180A (en) * | 2019-08-09 | 2021-02-09 | 汇聚科技（惠州）有限公司 | Method for packaging optical fiber and metal part |
| CN112346180B (en) * | 2019-08-09 | 2022-04-29 | 汇聚科技（惠州）有限公司 | Method for packaging optical fiber and metal part |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101124 |
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| CX01 | Expiry of patent term |