CN107607297B - The method for predicting optical fiber attenuation - Google Patents
The method for predicting optical fiber attenuation Download PDFInfo
- Publication number
- CN107607297B CN107607297B CN201711050833.9A CN201711050833A CN107607297B CN 107607297 B CN107607297 B CN 107607297B CN 201711050833 A CN201711050833 A CN 201711050833A CN 107607297 B CN107607297 B CN 107607297B
- Authority
- CN
- China
- Prior art keywords
- attenuation coefficient
- optical fiber
- attenuation
- actual measurement
- wavelength
- 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.)
- Active
Links
Abstract
The present invention relates to a kind of methods for predicting optical fiber attenuation, it is sampled from the plug for being envisaged for preparing preform carries out wire drawing, prepare the detection optical fiber comprising sandwich layer and at least partly covering, it is 1310 to wavelength that detection, which obtains detection optical fiber, the actual measurement attenuation coefficient of the light of 1383 and 1550nm, calculate these three the actual measurement attenuation coefficient differences of actual measurement attenuation coefficient between any two, these actual measurement attenuation coefficient differences are compared with corresponding standard attenuation coefficient difference, if at least one actual measurement attenuation coefficient difference and corresponding standard attenuation coefficient difference are inconsistent, then judge that the optical fiber attenuation prepared using the plug is unqualified.The present invention can look-ahead go out certain plugs and will prepare the underproof optical fiber of decaying, so that unqualified plug is rejected, it avoids because producing unqualified optical fiber using these plugs, and then avoid the human and material resources, financial resources and the time that are wasted in subsequent substandard product production, production cost is reduced, production efficiency is improved.
Description
Technical field
The present invention relates to one kind before optical fiber prepares, can look-ahead optical fiber attenuation whether He Ge method,
Belong to technical field of optical fiber detection.
Background technique
Optical fiber attenuation greatly limits the transmission range of optical fiber, is an important indicator for evaluating optical fiber property, and optical fiber is
It is formed by preform drawing, wherein the production process of preform is mainly two-step method: being the manufacture of plug first,
In the preparation process of plug, depositing operation can determine plug index distribution, relative index of refraction (△), prefabricated rods inner cladding and
The diameter ratio (b/a) of sandwich layer, sintering process are then glass densification and dehydration, are eliminated as caused by water peak in this process
1383 decaying.Therefore, plug manufacturing process is the core stage of prefabricated rods manufacture, and is the crucial control process of optical fiber attenuation,
The decaying of the optical fiber 1383 made of prefabricated stick drawn wire is had an impact with 1310 decaying, or causes substandard product.
With the continuous development of optical fiber technology, increasingly by people's in terms of improving production efficiency and reducing production cost
Pay attention to, will cause the material and waste of time that are largely generated by plug to optical fiber process since decaying is unqualified, in light
Before fibre prepares, it is predicted that whether the decaying of optical fiber qualified, for reduce material and the time waste, reduce production cost,
Improving production efficiency has apparent positive effect.
Summary of the invention
The purpose of the present invention is in view of the above drawbacks of the prior art, proposing a kind of method for predicting optical fiber attenuation, use
This method can look-ahead go out certain plugs and will prepare the underproof optical fiber of decaying, so that unqualified plug is rejected,
It avoids because producing unqualified optical fiber using these plugs, and then avoids the manpower being wasted in subsequent substandard product production, object
Power, financial resources and time reduce production cost, improve production efficiency.
The present invention realizes that the technical solution of above-mentioned purpose is: a method of prediction optical fiber attenuation, from being envisaged for preparing
Sampling carries out wire drawing on the plug (including extending plug) of preform, prepares the inspection comprising sandwich layer and at least partly covering
It surveys and uses optical fiber, detection obtains detection optical fiber to the actual measurement attenuation coefficient for the light that wavelength is 1310,1383 and 1550nm, calculates this
The actual measurement attenuation coefficient difference of three kinds of actual measurement attenuation coefficients between any two, by these actual measurement attenuation coefficient differences and corresponding standard
Attenuation coefficient difference is compared, if at least one actual measurement attenuation coefficient difference and corresponding standard attenuation coefficient difference are different
It causes, then judges that the optical fiber attenuation prepared using the plug is unqualified.
The beneficial effects of the present invention are: the unqualified risk of optical fiber attenuation caused by capable of estimating in advance because of plug reason, it will
These unqualified plugs are rejected, and subsequent production is not used in, the unqualified optical fiber of decaying caused by thus avoiding because of plug factor
Subsequent each production technology avoids and wastes these technologic human and material resources, financial resources and times, simultaneously as can be earlier
Know the relevant unqualified situation of plug, analyze reason in advance, take corrective measure, also avoids continuing to produce similarly not
Qualified plug.
Since the influence of additional cladding process and other factors to these three attenuation coefficients is seldom in practice, optical fiber is caused to decline
Subtract underproof factor to be concentrated mainly on plug, therefore, decline using method of the invention, it is possible to predict most optical fiber
Subtract underproof situation.
Detailed description of the invention
Fig. 1 is the flow chart of related process of the present invention.
Specific embodiment
Referring to Fig. 1, under the prior art, the production process for being related to plug mainly includes plug deposition and plug sintering, sintering
The plug foundation actual needs of completion carries out or without extending, the plug after extension can be described as extending plug, to extension core
Stick and plug without extension carry out conventional detection, detect preparation and prefabricated rods that qualified plug enters subsequent preform
The techniques such as wire drawing, produce fiber products.
The present invention joined the process of prediction optical fiber attenuation after existing routine plug detection, detect from by conventional plug
Be envisaged for prepare preform plug (including extend plug and without the plug of extension) on sampling carry out wire drawing, preparation
It out include the detection optical fiber of sandwich layer and at least partly covering, it is 1310,1383 and to wavelength that detection, which obtains detection optical fiber,
The actual measurement attenuation coefficient of the light of 1550nm calculates these three the actual measurement attenuation coefficient differences of actual measurement attenuation coefficient between any two, will
These actual measurement attenuation coefficient differences are compared with corresponding standard attenuation coefficient difference, if at least one actual measurement attenuation coefficient
Difference and corresponding standard attenuation coefficient difference are inconsistent, then judge that the optical fiber attenuation prepared using the plug is unqualified.
The standard attenuation coefficient difference can be respectively the three of 1310,1383 and 1550nm to wavelength according to corresponding optical fiber
The attenuation coefficient characteristic value of kind light calculates, and the attenuation coefficient characteristic value is the attenuation coefficient eliminated after extrinsic decaying.For
Adulterate GeO2Single mode optical fiber for, the attenuation coefficient characteristic value under 1310,1383 and 1550nm, tri- kinds of wavelength is respectively
0.33dB/Km, 0.27dB/Km and 0.185dB/Km are poor corresponding to the standard attenuation coefficient of 1310nm and 1383nm wavelength as a result,
Value is 0.06 dB/Km, and the standard attenuation coefficient difference corresponding to 1310nm and 1550nm wavelength is 0.145 dB/Km, is corresponded to
The standard attenuation coefficient difference of 1383nm and 1550nm wavelength is 0.085 dB/Km.
It can be combined with empirical data according to the deviation of detection error and permission, determine actual measurement attenuation coefficient difference
The error range allowed between corresponding standard attenuation coefficient difference, in the difference range of permission, it is believed that the two is consistent.
Error range beyond permission, then it is assumed that the two is inconsistent.
Tool can be found out according to existing research achievement to causing the underproof plug preparation process of optical fiber attenuation to be analyzed
Body reason simultaneously takes effective corrective measure, avoids continuing to produce same unqualified plug.
In general, if the actual measurement attenuation coefficient difference between a certain wavelength and other two wavelength decays with respective standard
Coefficient differentials are inconsistent, and the actual measurement attenuation coefficient difference between other two wavelength and respective standard attenuation coefficient difference one
It causes, then can further speculate that the optical fiber prepared is unqualified to the decaying of the wavelength.It in this case, can be accordingly to specific
The underproof deduction of the decaying of wavelength, analysis lead to the underproof reason of optical fiber attenuation in plug preparation process.
Here is decay using the method for the present invention several specific embodiments of unqualified prediction:
Embodiment 1:
It for the extension plug A of conventional detection qualification, takes and wherein directly carries out wire drawing for one section, it is (right to detect its 1310 decaying
Wavelength is the attenuation coefficient of the light of 1310nm), 1383 decaying (to the attenuation coefficient for the light that wavelength is 1383nm) and 1550 decline
Subtracting (to the attenuation coefficient for the light that wavelength is 1550nm) is respectively 0.385 dB/Km, 0.385 dB/Km and 0.3 dB/Km.It calculates
Obtain 1310 decaying with 1383 decaying difference be 0,1383 decaying with 1550 decay difference be 0.085 dB/Km, 1310 decline
Subtracting with the difference of 1550 decaying is 0.085 dB/Km, light of the prefabricated rods after wire drawing after thus speculating the additional covering of the plug
Fine decaying is unqualified, and further speculates that its 1310 decaying is unqualified.
Embodiment 2:
For the extension plug B of conventional detection qualification, take wherein one section directly carry out wire drawing, detect its 1310 decaying,
1383 decaying and 1550 decaying are respectively 0.45 dB/Km, 0.45 dB/Km and 0.305 dB/Km.1310 decaying are calculated
With 1383 decaying differences be 0,1383 decaying and 1550 decaying differences are 0.145 dB/Km, 1310 decaying and 1550 decaying differences
Decaying for 0.145 dB/Km, optical fiber of the prefabricated rods after wire drawing after thus speculating the additional covering of the plug is unqualified, goes forward side by side
One step speculates that its 1383 decaying is unqualified.
Embodiment 3:
For the extension plug C of conventional detection qualification, take wherein one section directly carry out wire drawing, detect its 1310 decaying,
1383 decaying and 1550 decaying are respectively 0.47 dB/Km, 0.41 dB/Km and 0.275 dB/Km, and 310 decaying are calculated
With 1383 decaying differences be 0.06 dB/Km, 1383 decaying with 1550 decaying differences be 0.135 dB/Km, 1310 decaying with
1550 decaying differences are 0.195 dB/Km, and optical fiber of the prefabricated rods after wire drawing after thus speculating the additional covering of the plug declines
Subtract it is unqualified, and further speculate its 1550 decaying it is unqualified.
It is disclosed by the invention it is each preferably with optional technological means, unless otherwise indicated and one preferably or can selecting technology hand
Section is that further limiting for another technological means is outer, can form several different technical solutions in any combination.
Claims (5)
1. a kind of method for predicting optical fiber attenuation, sampling carries out wire drawing, system from the plug for being envisaged for preparing preform
Standby include the detection optical fiber of sandwich layer and at least partly covering out, and it is 1310,1383 and to wavelength that detection, which obtains detection optical fiber,
The actual measurement attenuation coefficient of the light of 1550nm calculates these three the actual measurement attenuation coefficient differences of actual measurement attenuation coefficient between any two, will
These actual measurement attenuation coefficient differences are compared with corresponding standard attenuation coefficient difference, if at least one actual measurement attenuation coefficient
Difference and corresponding standard attenuation coefficient difference are inconsistent, then judge that the optical fiber attenuation prepared using the plug is unqualified, institute
State the attenuation coefficient that standard attenuation coefficient difference is respectively three kinds of light of 1310,1383 and 1550nm to wavelength according to corresponding optical fiber
Characteristic value calculates, and the attenuation coefficient characteristic value is the attenuation coefficient eliminated after extrinsic decaying, determines that actual measurement attenuation coefficient is poor
The error range allowed between value and corresponding standard attenuation coefficient difference, in the difference range of permission, it is believed that the two is consistent
, the error range beyond permission, then it is assumed that the two is inconsistent.
2. the method for prediction optical fiber attenuation as described in claim 1, it is characterised in that when a certain wavelength and other two wavelength
Between actual measurement attenuation coefficient difference it is inconsistent with respective standard attenuation coefficient difference, and the actual measurement between other two wavelength
Attenuation coefficient difference is consistent with respective standard attenuation coefficient difference, then further speculates decaying of the optical fiber prepared to the wavelength
It is unqualified.
3. the method for prediction optical fiber attenuation as claimed in claim 2 is divided accordingly to the underproof deduction of the decaying of specific wavelength
Analysis leads to the underproof reason of optical fiber attenuation in plug preparation process.
4. the method for prediction optical fiber attenuation as claimed in claim 1,2 or 3, it is characterised in that the standard attenuation coefficient difference
It is respectively the attenuation coefficient characteristic value calculating of three kinds of light of 1310,1383 and 1550nm to wavelength according to corresponding optical fiber, it is described to decline
Subtracting coefficient characteristics value is the attenuation coefficient eliminated after extrinsic decaying.
5. as claimed in claim 4 prediction optical fiber attenuation method, it is characterised in that for adulterate GeO2 single mode optical fiber and
Speech, corresponding to 1310nm and 1383nm wavelength standard attenuation coefficient difference be 0.06 dB/Km, correspond to 1310nm and
The standard attenuation coefficient difference of 1550nm wavelength is 0.145 dB/Km, and the standard corresponding to 1383nm and 1550nm wavelength decays
Coefficient differentials are 0.085 dB/Km.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711050833.9A CN107607297B (en) | 2017-10-31 | 2017-10-31 | The method for predicting optical fiber attenuation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711050833.9A CN107607297B (en) | 2017-10-31 | 2017-10-31 | The method for predicting optical fiber attenuation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107607297A CN107607297A (en) | 2018-01-19 |
| CN107607297B true CN107607297B (en) | 2019-07-19 |
Family
ID=61085202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711050833.9A Active CN107607297B (en) | 2017-10-31 | 2017-10-31 | The method for predicting optical fiber attenuation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107607297B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101066834A (en) * | 2007-05-28 | 2007-11-07 | 江苏法尔胜光子有限公司 | Process of preparing fiber preformrod |
| CN101213149A (en) * | 2006-03-06 | 2008-07-02 | 斯德莱特光学技术有限公司 | Apparatus and method for fabricating optical fiber preform |
| CN103175708A (en) * | 2013-04-11 | 2013-06-26 | 中国特种设备检测研究院 | Elevator descending testing system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9586853B2 (en) * | 2014-07-09 | 2017-03-07 | Corning Incorporated | Method of making optical fibers in a reducing atmosphere |
-
2017
- 2017-10-31 CN CN201711050833.9A patent/CN107607297B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101213149A (en) * | 2006-03-06 | 2008-07-02 | 斯德莱特光学技术有限公司 | Apparatus and method for fabricating optical fiber preform |
| CN101066834A (en) * | 2007-05-28 | 2007-11-07 | 江苏法尔胜光子有限公司 | Process of preparing fiber preformrod |
| CN103175708A (en) * | 2013-04-11 | 2013-06-26 | 中国特种设备检测研究院 | Elevator descending testing system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107607297A (en) | 2018-01-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106595731B (en) | A kind of fibrous composite hot moulding curing deformation optical fiber monitoring device and method | |
| CN102305965B (en) | Sensing optical cable for synchronously monitoring temperature and pressure in oil well tubing in distribution mode | |
| CN103162938B (en) | For the method characterizing the optical property of optical fiber | |
| US9588286B2 (en) | Optical fiber | |
| CN105043458A (en) | Device and method for on-line detection of lightning damage of fiber composite material | |
| KR102233643B1 (en) | Apparatus and method for measurement of transparent cylindrical articles | |
| CN106840012A (en) | A kind of strengthen the hair powder charge II interface strain measuring methods based on grating sensing technique | |
| CN107607297B (en) | The method for predicting optical fiber attenuation | |
| CN114111857A (en) | Vernier effect based optical fiber FPI cascaded MI sensing device | |
| CN103115597A (en) | On-line dynamic loose tube optical fiber extra length test method | |
| CN108414089A (en) | A kind of measuring device and its measurement method of optical fiber grating temperature coefficient | |
| JP5309168B2 (en) | Method of measuring hole diameter, hole position, hole surface roughness or bending loss of holey optical fiber, method of manufacturing holey optical fiber, and method of testing holey optical fiber optical line | |
| CN107389154A (en) | The continuous liquid level sensing device of hollow optic fibre and measuring method based on OFDR | |
| CN105074431A (en) | Surface plasmon resonance sensor cell and surface plasmon resonance sensor | |
| CN108168583B (en) | Double-parameter optical fiber sensor prepared based on chemical corrosion combined with discharge welding | |
| CN105466594A (en) | Least square method correction method of hot-spot temperature of transformer | |
| CN105424068A (en) | FBG sensing head and preparation method thereof, and multi-parameter sensor using FBG sensing head | |
| CN206573479U (en) | A kind of hydrogen gas sensor based on fiber coupler | |
| CN107401988A (en) | A kind of optical fiber coating concentricity monitoring system | |
| JP2002303741A (en) | Glass preform for single mode optical fiber, single mode optical fiber and its evaluation method | |
| CN110501781B (en) | Waveguide forming method and SF6 gas passive sensor comprising waveguide | |
| US20030147607A1 (en) | Method of characterising one or more properties of optical fibres | |
| Li | Propagation characteristics of single-mode optical fibers with arbitrary refractive-index profile: the finite quadratic element approach | |
| CN109540773A (en) | A kind of outdoor fire-retardant cable cracking factor measuring method | |
| US20190271602A1 (en) | Prism coupling methods of characterizing stress in glass-based ion-exchanged articles having problematic refractive index profiles |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |