CN1289931C - Secondary coated optical fiber of long stainless steel pipe and its mfg. method - Google Patents
Secondary coated optical fiber of long stainless steel pipe and its mfg. method Download PDFInfo
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- CN1289931C CN1289931C CN 200310108747 CN200310108747A CN1289931C CN 1289931 C CN1289931 C CN 1289931C CN 200310108747 CN200310108747 CN 200310108747 CN 200310108747 A CN200310108747 A CN 200310108747A CN 1289931 C CN1289931 C CN 1289931C
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Abstract
The present invention relates to the technical field of communication optical cables and second coating optical fibers, particularly to a secondary coating optical fiber of a long-overlength stainless steel pipe and a manufacturing method thereof. The method can manufacture the second coating optical fiber of a stainless steel pipe with the structure of a coating layer outside an S-Z spiral plastic lined pipe having an eccentric inner hole and a variable S-Z spiralization cycle and the stainless steel pipe. The present invention has the advantages of long enough optical fiber overlength, favorable optical fiber overlength consistency, good optical fiber overlength axial distribution uniformity, simple manufacturing method of products and low cost.
Description
Technical field
The present invention relates to communications optical cable and second coating optical fiber field, relate to a kind of Big Excess Length Stainless Steel Tube Secondary Coated Fiber and its Manufacturing Method concretely.The excess fiber length that the present invention realizes is fully big, the stainless-steel tube second coating optical fiber manufacturing technology of temperature added losses characteristic good, employing during the light unit that is adapted at Optical Fiber composite overhead Ground Wire (OPGW) product of etc.ing of high-performance, the low-cost submarine optical fiber cable that requires and big centre of span beam tube type small bore structure is made.
Background technology
The stainless-steel tube second coating optical fiber has obtained using widely in Optical Fiber composite overhead Ground Wire (OPGW), submarine optical fiber cable and metal self-bearing type (MASS) optical cable owing to have good tensile strength, sealing property and lateral pressure resistant performance.Wherein, the optical cable of the central beam tube type light cellular construction of thin footpathization is because the superiority aspect manufacturing cost and usability especially has been subjected to user's welcome.Under the optical cable elongation situation that set up in big span in order to ensure central beam tube type light unit (stainless-steel tube coated fiber), temperature variation, wind speed, icing or ocean current etc. causes in the light unit optical fibre core be not subjected to stress, need the optical fiber in the stainless-steel tube coated fiber to have enough big surplus length.The manufacture process of general stainless-steel tube second coating optical fiber is: during optical fiber enters by the pipe shape stainless steel band after the shaping roller moulding after tension stringing, S-Z strand, made through operations such as laser bonding, stainless-steel tube drawing sizings by the seam stainless-steel tube coated fiber that has of roller moulding again.Excess fiber length in the stainless-steel tube second coating optical fiber, can be in manufacture process drawing degree during by control optical fiber laying tension and control welded stainless steel pipe obtain.Its manufacturing line and process flow diagram are as shown in Figure 1.The excess fiber length of general stainless-steel tube second coating optical fiber is difficult for accomplishing fully big, and problems such as optical fiber attenuation increase and temperature characterisitic deterioration generally occur under the long situation than the Dayu.
About Dayu long stainless-steel tube second coating optical fiber technology, cause is one of core technology of submarine optical fiber cable and small bore structure OPGW electric power optical cable, countries in the world are all very paid close attention to always for a long time, the research and development that companies such as Germany SIEMENS, French AICATEL, Japanese OCC, China head fly, middle sky all endeavour this technology, but the excess fiber length maximal value that the stainless-steel tube second coating optical fiber of external and domestic other unit reaches at present is 0.8%, should not make the little external diameter optical cable of central beam tube type light cellular construction.
Summary of the invention
The objective of the invention is according to above-mentioned the deficiencies in the prior art part, a kind of Big Excess Length Stainless Steel Tube Secondary Coated Fiber and its Manufacturing Method is provided, and this method can be made the stainless-steel tube second coating optical fiber of the outer coating structure of a kind of S-Z of having spiral, variable S-Z spiralization cycle eccentric inner hole plastic inner lining pipe and stainless-steel tube.
The realization of the object of the invention is finished by following technical scheme:
The long stainless-steel tube second coating optical fiber in Dayu of the present invention is mainly by fibre bundle, the plastic inner lining pipe, bonding ring, the stainless steel coated tube constitutes, wherein fibre bundle is the S-Z spiral fashion, optical fiber is in plastic inner lining pipe spiral eccentric inner hole, the endoporus of plastic inner lining pipe is the eccentric shape of S-Z spiral at long axis direction, and the external diameter of plastic inner lining pipe is slightly less than the internal diameter of stainless steel coated tube, the stainless steel coated tube is at outermost layer, described plastic inner lining pipe outer wall and stainless steel inside pipe wall are at the S-Z spiralization cycle of long axis direction every the spiral eccentric inner hole of one or more plastic inner lining pipe, but be not more than 50 periodic distance, the place that forever interfixes is promptly arranged.
Manufacture method of the present invention is: fibre bundle is gone into the plastic inner lining pipe with the S-Z heave in behind tension stringing, this plastic inner lining pipe adopts core rod S-Z to wave eccentric expressing technique preparation, then at the outer wall of plastic inner lining pipe more than an internal lining pipe eccentric inner hole S-Z spiralization cycle, but the distance that is not more than 50 cycles promptly is coated with the annular hot melt adhesive layer of a circle ring width 〉=3mm, at last stainless steel band through the roller moulding, cladding is carried out Laser Welding (LBW) and is connected into stainless-steel tube outside the plastic inner lining pipe, the local plastic internal lining pipe outer wall that at this moment scribbles thermosol promptly is bonded as one with stainless steel inside pipe wall.
Advantage of the present invention is: have fully big excess fiber length amount, good excess fiber length consistance and excess fiber length axial distribution homogeneity, promptly realized the maximum surplus of length of optical fiber 〉=1% in minor diameter (being less than or equal to 10mm) stainless-steel tube coated fiber, surplus length is evenly distributed, and fiber optic temperature added losses characteristic good, steady in a long-term reliable, common loss≤0.36db/Km (1310nm wavelength), ≤ 0.25db/Km (1550nm wavelength), fiber optic temperature added losses value≤0.05db/Km is (under the 1550nm wavelength, in-40 ℃ to+80 ℃ scopes), and reaching same therewith loss for prior art, excess fiber length only is 0.4%-0.55% under the situation of temperature added losses characteristic.Product of the present invention can effectively solve submarine optical fiber cable and OPGW in actual use optical cable be subjected to setting up the optical fiber that elongation, temperature variation elongation, wind-force elongation, icing elongation etc. cause and be subjected to problems such as stress, strain, and the manufacture method of product is simple, and cost is low.
Summary of drawings
Fig. 1 is a prior art stainless-steel tube second coating optical fiber manufacturing process flow diagram;
Fig. 2 a is a stainless-steel tube second coating optical fiber sectional view of the present invention;
Fig. 2 b is a stainless-steel tube second coating optical fiber side cutaway view of the present invention;
Fig. 3 is a stainless-steel tube second coating optical fiber manufacturing process flow diagram of the present invention;
Fig. 4 is the measurement result of each excess fiber length difference in the excess fiber length amount of different length stainless-steel tube coated fiber sample of the present invention and the same stainless-steel tube;
Fig. 5 is a stainless-steel tube second coating optical fiber tensile strength test result of the present invention;
Fig. 6 is the high low temperature cyclic test of stainless-steel tube second coating optical fiber of the present invention result;
Fig. 7 is the long-term heat resistant test result of stainless-steel tube second coating optical fiber of the present invention;
Concrete technical scheme
Feature of the present invention and other correlated characteristic are described in further detail by example below in conjunction with accompanying drawing, so that technician's of the same trade understanding:
Shown in Fig. 1-7, label 1-14 represents respectively: optical fiber (1), S-Z stranded (2), conduit (3), welding (4), traction (5), take-up reel (6), die orifice (7), roller (8), stainless steel band (9), stainless-steel tube (10), gap (11), plastic inner lining pipe (12), bonding ring (13), extruder (14).
The fiber products of present embodiment is provided with plastic inner lining pipe layer (12) in stainless-steel tube (10), the endoporus of plastic inner lining pipe (12) is the eccentric shape of S-Z spiral at long axis direction, its external diameter is slightly less than the internal diameter of stainless steel coated tube (10), fibre bundle (1) is positioned at plastic inner lining pipe (12), also is the S-Z spiral fashion.Long axis direction along plastic inner lining pipe (12), on internal lining pipe (12) outer wall, more than the internal lining pipe endoporus S-Z spiralization cycle of every interval, but be not more than the distance in 50 cycles, its part is bonded as one with stainless steel inside pipe wall, the bonding annulate shaft in this part should be more than or equal to 3mm to width, distance at interval with more than or equal to an internal lining pipe endoporus S-Z spiralization cycle, but no more than 10 such cycles be the best.
Excess fiber length amount, the excess fiber length axial distribution homogeneity that can effectively obtain and control the stainless-steel tube second coating optical fiber being set and preventing bare fibre (1) in stainless-steel tube (10) the inwall commissure flaw damage pipe of plastic inner lining pipe (12).
The manufacture method of present embodiment product is that fibre bundle (1) is also gone into plastic inner lining pipe (12) with the S-Z heave in behind tension stringing, thereby obtains excess fiber length once more and keep each excess fiber length consistance.This plastic inner lining pipe adopts core rod S-Z to wave eccentric expressing technique preparation.Along the long axis direction of plastic inner lining pipe, in the internal lining pipe outside, the distance of every interval plastic inner lining pipe orifice S-Z spiralization cycle above (comprising 1 cycle), but be not more than 10 cycles, the annular hot melt adhesive layer of a circle (ring width 〉=3mm) is coated in the part.When stainless steel band through the roller moulding, cladding is carried out Laser Welding (LBW) when being connected into stainless-steel tube outside the plastic inner lining pipe, the local plastic internal lining pipe outer wall that scribbles thermosol promptly is bonded as one with stainless steel inside pipe wall.
The present embodiment product in use, in the elastic deformation scope of plastic inner lining pipe (12) material, when lining steel pipe (10) is subjected to tension force or temperature rising etc. and when elongation takes place, increasing while extending to reverse with the S-Z Cycle Length will appear in the part that plastic inner lining pipe (12) is gone up and stainless-steel tube (10) inwall does not bond with S-Z spiral eccentric inner hole, thereby its internal optical fiber (1) is not subjected to ess-strain.Otherwise, remove or temperature decline when tension force, during lining steel pipe (10) retraction, this partly plastic internal lining pipe (12) then also shrinks simultaneously in the elastic properties of materials deformation range, oppositely circles round and S-Z spiralization cycle length resets.
Test of present embodiment properties of product and detection case are as follows:
The 16 core stainless-steel tube second coating optical fibers that are developed into, the stainless-steel tube external diameter is 3.2mm, and internal diameter is 2.8mm, and wall thickness is 0.2mm.The plastic inner lining external diameter of pipe is 2.7mm, and internal diameter is 2.0mm.Adopt intercept method that fibre loss is measured, the average light loss value under the 1310nm wavelength is 0.34db/Km, and the average light loss under the 1550nm wavelength is 0.20db/Km.
Fig. 4 has shown the difference measurement result of each excess fiber length in the excess fiber length amount of stainless-steel tube coated fiber sample of different sample lengths and the same stainless-steel tube.Owing to be provided with the plastic inner lining pipe of the eccentric spiral endoporus of S-Z in the stainless-steel tube, and fibre bundle also adopts S-Z stranded when inserting the plastic inner lining pipe, so stainless steel coated tube inner fiber can be obtained between the long amount in Dayu, each optical fiber the little and excess fiber length of surplus long difference and is evenly distributed vertically.
The above-mentioned stainless-steel tube coated fiber of getting 30M length carries out the tension force stretching test, and the optic path loss of monitoring 16 * 30M welding total length simultaneously changes.Fig. 5 has shown this experimental test result.Because when the stainless-steel tube coated fiber of this S-Z of the having spiral of present embodiment, the plastic inner lining tubular construction of variable S-Z spiralization cycle eccentric inner hole is subjected to tension force stretching, in its elastic deformation scope, can rotate the limit and extend and increase the S-Z spiralization cycle, thereby discharge than common excess fiber length bigger when static by part liner tube edge.Therefore, the tension test detection architecture shows that when the relative tensile elongation of coated fiber reaches 1.2% the fiber transmission attenuation in the coated tube still remains unchanged.
Get the above-mentioned stainless-steel tube coated fiber coiled circle of 200M length, place in the high-low temperature test chamber, carry out-40 ℃-+100 ℃ high low temperature cyclic test and+90 ℃, 400 hours continuous heat resistant test, the optical transmission loss of light path under the 1550nm wavelength of the 16 * 200M of continuous monitoring simultaneously welding total length changes.Fig. 6 and Fig. 7 have shown the loss situation of change of stainless-steel tube coated fiber in thermocycling and heat resistant test respectively.According to the test testing result, the loss changing value of the optical fiber of present embodiment product in thermocycling and heat resistant test confirmed that less than 0.03db/Km above-mentioned stainless-steel tube coated fiber has good temperature-loss variation characteristic.
Claims (5)
1, the long stainless-steel tube second coating optical fiber in a kind of Dayu, mainly comprise and have S-Z spiral fibre bundle, the stainless steel coated tube, it is characterized in that also comprising the plastic inner lining pipe, wherein optical fiber is in plastic inner lining pipe spiral eccentric inner hole, the endoporus of plastic inner lining pipe is the eccentric shape of S-Z spiral at long axis direction, and the external diameter of plastic inner lining pipe is less than the internal diameter of stainless steel coated tube, described plastic inner lining pipe outer wall and stainless steel inside pipe wall are at the S-Z spiralization cycle of long axis direction every the spiral eccentric inner hole of one or more plastic inner lining pipe, but be not more than 50 periodic distance, the place that forever interfixes is promptly arranged.
2, the long stainless-steel tube second coating optical fiber in a kind of Dayu according to claim 1 is characterized in that the endoporus screw pitch≤150mm of described plastic inner lining pipe.
3, the long stainless-steel tube second coating optical fiber in a kind of Dayu according to claim 1 is characterized in that maintaining the gap between described plastic inner lining external diameter of pipe and the stainless steel coated tube internal diameter.
4, according to the long stainless-steel tube second coating optical fiber of claim 1 or 3 described a kind of Dayus, it is characterized in that the gap≤0.15mm that keeps between described plastic inner lining external diameter of pipe and the stainless steel coated tube internal diameter.
5, the manufacture method of the long stainless-steel tube second coating optical fiber in a kind of Dayu, it is characterized in that this method is that fibre bundle is gone into the plastic inner lining pipe with the S-Z heave in behind tension stringing, this plastic inner lining pipe adopts core rod S-Z to wave eccentric expressing technique preparation, then at the outer wall of plastic inner lining pipe more than an internal lining pipe eccentric inner hole S-Z spiralization cycle, but the distance that is not more than 50 cycles promptly is coated with the annular hot melt adhesive layer of a circle ring width 〉=3mm, at last stainless steel band through the roller moulding, cladding is carried out Laser Welding (LBW) and is connected into stainless-steel tube outside the plastic inner lining pipe, the local plastic internal lining pipe outer wall that at this moment scribbles thermosol promptly is bonded as one with stainless steel inside pipe wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310108747 CN1289931C (en) | 2003-11-20 | 2003-11-20 | Secondary coated optical fiber of long stainless steel pipe and its mfg. method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310108747 CN1289931C (en) | 2003-11-20 | 2003-11-20 | Secondary coated optical fiber of long stainless steel pipe and its mfg. method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1564042A CN1564042A (en) | 2005-01-12 |
| CN1289931C true CN1289931C (en) | 2006-12-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200310108747 Expired - Fee Related CN1289931C (en) | 2003-11-20 | 2003-11-20 | Secondary coated optical fiber of long stainless steel pipe and its mfg. method |
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| CN (1) | CN1289931C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5708015B2 (en) * | 2010-02-26 | 2015-04-30 | 住友電気工業株式会社 | Fiber optic cable |
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- 2003-11-20 CN CN 200310108747 patent/CN1289931C/en not_active Expired - Fee Related
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| CN1564042A (en) | 2005-01-12 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Shanghai Telecom Residential Broad Band Network Co., Ltd. Assignor: Hengtong Photoelectric Tech Co., Ltd., Shanghai Contract fulfillment period: 2007.9.20 to 2012.9.19 Contract record no.: 2008310000077 Denomination of invention: Secondary coated optical fiber of long stainless steel pipe and its mfg. method Granted publication date: 20061213 License type: Exclusive license Record date: 2008.9.19 |
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| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENCE; TIME LIMIT OF IMPLEMENTING CONTACT: 2007.9.20 TO 2012.9.19 Name of requester: SHANGHAI TELECOM RESIDENTIAL BROADBAND NETWORK LT Effective date: 20080919 |
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| ASS | Succession or assignment of patent right |
Owner name: JIANGSU HENGTONG PHOTOELECTRIC CO., LTD. Effective date: 20130410 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20130410 Address after: 200436 No. 555 West Road, Shanghai Patentee after: Hengtong Photoelectric Tech Co., Ltd., Shanghai Patentee after: Jiangsu Hengtong Photoelectric Co., Ltd. Address before: 200436 No. 555 West Road, Shanghai Patentee before: Hengtong Photoelectric Tech Co., Ltd., Shanghai |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20061213 Termination date: 20171120 |
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| CF01 | Termination of patent right due to non-payment of annual fee |