CN106680956A - Integrated optical fiber extra length generating method - Google Patents
Integrated optical fiber extra length generating method Download PDFInfo
- Publication number
- CN106680956A CN106680956A CN201710159774.2A CN201710159774A CN106680956A CN 106680956 A CN106680956 A CN 106680956A CN 201710159774 A CN201710159774 A CN 201710159774A CN 106680956 A CN106680956 A CN 106680956A
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- CN
- China
- Prior art keywords
- optical fiber
- cable
- cable pipe
- optical
- length
- 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
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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
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4439—Auxiliary devices
- G02B6/444—Systems or boxes with surplus lengths
-
- 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
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4439—Auxiliary devices
- G02B6/4457—Bobbins; Reels
-
- 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
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4439—Auxiliary devices
- G02B6/4459—Ducts; Conduits; Hollow tubes for air blown fibres
-
- 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
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4479—Manufacturing methods of optical cables
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Communication Cables (AREA)
Abstract
The invention relates to the technical field of optical fibers, in particular to an integrated optical fiber extra length generating method. The method comprises the following steps that firstly, a total optical fiber length is determined; secondly, an optical fiber is wound around a metal pipe; thirdly, the finished product from the second step is heated; fourthly, after the heated finished product is cooled, the optical fiber is taken down; fifthly, a cable pipe is stretched; sixthly, the optical fiber penetrates through the cable pipe; seventhly, drawing force which the cable pipe is subjected to is decreased gradually; eighthly, when the drawing force is decreased to a extent in which the cable pipe is not subjected to force, the technology process is completed. According to the optical fiber extra length generated by means of the method, the quantity of the optical fiber extra length is large, and the use requirements for a marine environment are met.
Description
Technical field
The present invention relates to technical field of optical fiber, especially a kind of comprehensive excess fiber length production method.
Background technology
Optical fiber is fabricated by by fragile material quartz, and plastic deformation will not be produced when optical fiber is acted on by external force, and
It is the germinating and extension for being likely to occur crackle.The optical cable being composited by optical fiber can be subject to during production, installation and use
The external force effect that some are difficult to avoid that, this can produce the damage that cannot be made up to internal optical fiber, and causing the performance of optical fiber reduces,
Even fracture cannot be used.At this moment the static fatigue stress for being accomplished by excess fiber length to tackle the external force of optical cable and cause.Institute
The excess fiber length of meaning refers to difference of the optical fiber without vertical strain physical length and reference physical length calculated with shortest path with percentage
The relative value that number is represented.In loose tube structure optical cable, optical fiber has certain activity space in cable pipe or skeleton basin, while optical fiber
Free bent state is presented, excess fiber length can provide certain stress protection when optical cable is subject to external carbuncle for optical fiber.
The optical fiber of different structure has different remaining long production modes.In loose tube structure optical cable, the generation of excess fiber length
Mode has two kinds：One kind is that by optical cable in stranding, optical fiber or the sleeve pipe containing optical fiber are according to certain lay length of twist in
It is long more than the stranded formation of heart stiffener, it is this remaining long referred to as stranded remaining long；Another kind is that cable pipe is stretched, under tensile force
Optical cable applied elongation, reduces tensile force cable pipe retraction and optical fiber does not bounce back and produce remaining length, or cable pipe is entered then because not having stress
The cold generation temperature difference of water-filling, cable pipe cooling meat, the optical fiber in cable pipe does not shrink and produces remaining length, and this remaining producing method long claims
For long more than sleeve pipe.
Marine exploration can install numerous sensors in the position away from coastline, it is necessary to lay submarine optical fiber cable could be by signal
Pass back.Optical cable undergoes numerous external force effects because of the motion of seawater, is used in the later stage of optical cable, meeting when especially early stage is laid
There is very great flexural deformation, the requirement very high to the proposition of excess fiber length.The optical fiber of the generation of current loose tube structure optical cable
Remaining length is difficult to ensure that the optical fiber of cable interior is not acted on by external force and cracks or even break in ocean optical cable laying.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of comprehensive excess fiber length that can lift excess fiber length amount and produces
Method.
In order to solve the above-mentioned technical problem, the present invention is comprised the following steps：
Step one, excess fiber length as needed determines the total length of optical fibre in optical cable；
Step 2, optical fiber is twisted on metal tube；
Step 3, the twisted metal tube for having optical fiber is placed in baking oven and is heated
Step 4, metal tube is taken out from baking box, and optical fiber is removed from metal tube after cooling；
Step 5, stretching optical cable outside cable pipe；
Step 6, during cable pipe will be penetrated by the optical fiber of advance stranded treatment.
Step 7, under optical fiber unstressed state, is gradually reduced the tensile force suffered by cable pipe, and make optical fiber with cable pipe bullet
Property reply do contractile motion；
Step 8, when tensile force is decreased to cable pipe not to stress, that is, obtains the excess fiber length of this method generation.
Preferably, the metal tube that step 2 is told is a diameter of 15 centimetres of cylindrical tube.
Preferably, the baking process described in step 4, baked temperature is 80 DEG C, and baking time is 2 hours.
Preferably, the cable pipe stretch processing described in step 5, its tensile elongation is according to ultimate tensile elongation design objective
The maximum length of defined.
It is an advantage of the invention that to the higher of excess fiber length during seabed loose tube structure optical cable laying and use can be met
It is required that.Optical fiber that will not be because of the motion in seawater to cable interior produces damage.
Specific embodiment
Embodiment cited by the present invention, is only intended to help and understands the present invention, should not be construed as to present invention protection model
The restriction enclosed, for those skilled in the art, without departing from the inventive concept of the premise, can also be right
The present invention is made improvements and modifications, and these are improved and modification is also fallen into the range of the claims in the present invention protection.
When optical cable is laid and worked in the seawater, the athletic meeting of seawater makes optical cable form the bending of long range, and this is to optical fiber
The requirement of remaining length is high, and the excess fiber length amount of the excess fiber length production method institute output being currently known has been difficult to meet loose noose
Use requirement of the structure optical cable in marine environment.Comprehensive excess fiber length production method of the present invention can be significantly
Lifting excess fiber length amount, meets use requirement of the loose tube structure optical cable in marine environment.
Step one, excess fiber length as needed determines the total length of optical fibre in optical cable；
Step 2, optical fiber is twisted on a diameter of 15 centimetres of metallic cylindrical tube；
Step 3, the twisted metal tube for having optical fiber is placed in baking oven, with 80 DEG C, heat within 2 hours；
Step 4, metal tube is taken out from baking box, and aperture is removed from metal tube after cooling；
Step 5, according to the maximum length of ultimate tensile elongation design objective defined, stretching optical cable outside cable pipe；
Step 6, during cable pipe will be penetrated by the optical fiber of advance stranded treatment.
Step 7, under optical fiber unstressed state, is gradually reduced the tensile force suffered by cable pipe, and make optical fiber with cable pipe bullet
Property reply do contractile motion；
Step 8, when tensile force is decreased to cable pipe not to stress, that is, obtains the excess fiber length of this method generation.
A kind of deficiency of the present invention for the excess fiber length production method of existing loose tube structure optical cable, there is provided comprehensive optical fiber
The producing method of remaining length, obtains stranded remaining long by way of twisting fibers heat treatment shaping first, and then cable pipe is drawn
Length more than acquisition sleeve pipe is stretched, the producing method of two kinds of excess fiber lengths is integrated, be greatly improved excess fiber length amount, pine can be made
Optical fiber in nested structure optical cable is greatly protected.
Claims (4)
1. a kind of comprehensive excess fiber length production method, it is characterised in that, comprise the following steps:
Step one, excess fiber length as needed determines the total length of optical fibre in optical cable；
Step 2, optical fiber is twisted on metal tube；
Step 3, the twisted metal tube for having optical fiber is placed in baking oven and is heated；
Step 4, metal tube is taken out from baking box, and optical fiber is removed from metal tube after cooling；
Step 5, stretching optical cable outside cable pipe；
Step 6, during cable pipe will be penetrated by the optical fiber of advance stranded treatment；
Step 7, under optical fiber unstressed state, is gradually reduced the tensile force suffered by cable pipe, and optical fiber is returned with cable tubular elastic
Contractile motion is done again；
Step 8, when tensile force is decreased to cable pipe not to stress, that is, obtains the excess fiber length of this method generation.
2. comprehensive excess fiber length production method according to claim 1, it is characterised in that the metal tube described in step 2
It is a diameter of 15 centimetres of cylindrical tube.
3. comprehensive excess fiber length production method according to claim 1, it is characterised in that the baking described in step 4
Journey, baked temperature is 80 DEG C, and baking time is 2 hours.
4. comprehensive excess fiber length production method according to claim 1, it is characterised in that the cable pipe described in step 5 draws
Treatment is stretched, its tensile elongation is according to the maximum length of ultimate tensile elongation design objective defined.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710159774.2A CN106680956A (en) | 2017-03-17 | 2017-03-17 | Integrated optical fiber extra length generating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710159774.2A CN106680956A (en) | 2017-03-17 | 2017-03-17 | Integrated optical fiber extra length generating method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106680956A true CN106680956A (en) | 2017-05-17 |
Family
ID=58828988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710159774.2A Pending CN106680956A (en) | 2017-03-17 | 2017-03-17 | Integrated optical fiber extra length generating method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106680956A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111736281A (en) * | 2020-06-19 | 2020-10-02 | 武汉理工大学 | Fiber grating array temperature measurement optical cable for solving problem of excess length and process |
| CN113484963A (en) * | 2021-07-08 | 2021-10-08 | 深圳市恒捷光通讯技术有限公司 | Method for storing excess length of optical fiber and method for installing optical fiber connector |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1172957A (en) * | 1996-08-01 | 1998-02-11 | 阿尔卡塔尔海底网络公司 | Method of imparting surplus length to optical fibers in protective metal tube, and line for implementing the method. |
| CN1791821A (en) * | 2003-07-01 | 2006-06-21 | 日立电线株式会社 | Optical fiber coiled cord |
| CN201247335Y (en) * | 2007-03-06 | 2009-05-27 | 住友电气工业株式会社 | Optic cable |
| CN101692136A (en) * | 2009-10-10 | 2010-04-07 | 中天日立光缆有限公司 | Overlength optical fiber unit and manufacturing method thereof |
-
2017
- 2017-03-17 CN CN201710159774.2A patent/CN106680956A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1172957A (en) * | 1996-08-01 | 1998-02-11 | 阿尔卡塔尔海底网络公司 | Method of imparting surplus length to optical fibers in protective metal tube, and line for implementing the method. |
| CN1791821A (en) * | 2003-07-01 | 2006-06-21 | 日立电线株式会社 | Optical fiber coiled cord |
| CN201247335Y (en) * | 2007-03-06 | 2009-05-27 | 住友电气工业株式会社 | Optic cable |
| CN101692136A (en) * | 2009-10-10 | 2010-04-07 | 中天日立光缆有限公司 | Overlength optical fiber unit and manufacturing method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111736281A (en) * | 2020-06-19 | 2020-10-02 | 武汉理工大学 | Fiber grating array temperature measurement optical cable for solving problem of excess length and process |
| CN113484963A (en) * | 2021-07-08 | 2021-10-08 | 深圳市恒捷光通讯技术有限公司 | Method for storing excess length of optical fiber and method for installing optical fiber connector |
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| 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: 20170517 |