CN1847180A - Production process capable of improving cut-off wavelength of fiber preform rod - Google Patents
Production process capable of improving cut-off wavelength of fiber preform rod Download PDFInfo
- Publication number
- CN1847180A CN1847180A CN 200510050239 CN200510050239A CN1847180A CN 1847180 A CN1847180 A CN 1847180A CN 200510050239 CN200510050239 CN 200510050239 CN 200510050239 A CN200510050239 A CN 200510050239A CN 1847180 A CN1847180 A CN 1847180A
- Authority
- CN
- China
- Prior art keywords
- rod
- external diameter
- prefabricated rods
- improving
- cutoff 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.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 18
- 239000000835 fiber Substances 0.000 title abstract description 12
- 230000007704 transition Effects 0.000 claims abstract description 23
- 238000000151 deposition Methods 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims description 13
- 230000008021 deposition Effects 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 238000009826 distribution Methods 0.000 abstract description 9
- 238000005516 engineering process Methods 0.000 abstract description 3
- 239000011248 coating agent Substances 0.000 abstract 2
- 238000000576 coating method Methods 0.000 abstract 2
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 239000013307 optical fiber Substances 0.000 description 7
- 238000012797 qualification Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000007380 fibre production Methods 0.000 description 3
- 238000005491 wire drawing Methods 0.000 description 3
- 230000000644 propagated effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/01—Manufacture of glass fibres or filaments
- C03B37/012—Manufacture of preforms for drawing fibres or filaments
- C03B37/01205—Manufacture of preforms for drawing fibres or filaments starting from tubes, rods, fibres or filaments
- C03B37/01225—Means for changing or stabilising the shape, e.g. diameter, of tubes or rods in general, e.g. collapsing
- C03B37/0124—Means for reducing the diameter of rods or tubes by drawing, e.g. for preform draw-down
- C03B37/01242—Controlling or regulating the down-draw process
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Optical Couplings Of Light Guides (AREA)
Abstract
The present invention relates to fiber preformrod producing technology, and is especially production process capable of improving cut-off wavelength of fiber preformrod. The production process can improve axial cut-off wavelength distribution of fiber preformrod, reduce the useless tail length, decrease fiber regulating length in drawing fiber and lower fiber producing cost. The improved production process of fiber preformrod includes making core rod, stretching and depositing coating. The core rod is connected with one tail rod and one leading rod separately in two ends to form one starting rod for stretching, one transition section is formed between the stretched core rod and the tail rod and the axial outer diameter distribution of the transition section is controlled for fitting the outer diameter of the preformrod after depositing the coating and improving the cut-off wavelength distribution of said section.
Description
[technical field]
The present invention relates to preform manufacturing technology field, particularly a kind of production technique of improving the prefabricated rods cutoff wavelength.
[background technology]
Cutoff wavelength is an important performance indexes of single-mode fiber, and it refers to the specific wavelength of single-mode fiber, and when the optical wavelength of transmission surpassed this wavelength, optical fiber can only be propagated a kind of light of pattern, and below the wavelength, optical fiber can be propagated the light of various modes at this.All connect one one section of plug during common optical fiber prefabricated rods manufacturing stretching plug and connect the tail rod, connect at its other end and draw rod and become the rod that sets out, clamping stretching plug again at the excellent surface deposition covering that sets out, makes obtaining preform then.The prefabricated rods of common process manufacturing from plug to connect tail rod one side covering gradually attenuation until being zero, and opposite side is coated with equally distributed covering, gained preform core bag ratio on the transition section that connects between tail rod and the plug is different from the plug other parts, radial distribution is very inhomogeneous, has influenced the axial cutoff wavelength of preform and has distributed.For above-mentioned reasons, the excellent side of setting out is partial in the initial position of the qualified point of prefabricated rods head cutoff wavelength in actual production, and qualified point is longer apart from connecing tail rod distance, and the adjustment fiber lengths when having increased wire drawing has improved the optical fiber production cost.
[summary of the invention]
The technical assignment of the technical problem to be solved in the present invention and proposition is to overcome the technological deficiency that exists in the existing prefabricated rod production process, a kind of production technique of improving the prefabricated rods cutoff wavelength is provided, improve prefabricated rods cutoff wavelength axial distribution, shorten the qualified starting point of cutoff wavelength apart from connecing tail rod distance, adjust fiber lengths when reducing wire drawing, reduce the optical fiber production cost.
For achieving the above object, the present invention takes following technical scheme: a kind of production technique of improving the prefabricated rods cutoff wavelength, comprise plug making, stretching and covering deposition making prefabricated rods, wherein the plug two ends connect tail rod and draw clavate and become the successive rod that sets out, stretch then, back plug and connect and form a transition section between the tail rod stretches, it is characterized in that distributing by controlling the axial external diameter of this transition section, prefabricated rods external diameter coupling after making it and depositing covering, the cutoff wavelength of improving this part distributes.By changing the transition section external diameter, the core bag that makes this section plug and covering is than the core bag ratio near set out isometrical section plug of rod and covering, and the cutoff wavelength of improving this section distributes, and keeps the axial cutoff wavelength stable and consistent of prefabricated rods.
It is the thinnest on the whole rod that sets out that one place's external diameter is arranged on the transition section described in the present invention, and this place increases gradually to the axial external diameter in both sides certainly, carries out the transition to isometrical vertically part and sets out on the rod.Original isometrical rod that sets out is adjusted into suitable reducing rod, can improves this part cutoff wavelength qualification rate, shorten the qualified initial point position of cutoff wavelength.
Transition segment length 180mm described in the present invention, the fine positioning of its top external diameter is put the isometrical side 150mm of starting pitch rod, the external diameter value is 0.93D, from the thinnest place to set out the rod an isometrical side 100mm, increase gradually to the external diameter value, reach 0.98D, this position continues to increase to the isometrical side external diameter of rod that sets out certainly, carry out the transition to the excellent equal-diameter part of setting out, diameter D is the upward external diameter value of equal-diameter part of rod of setting out.By this method, can effectively improve prefabricated rods cutoff wavelength qualification rate, reduced a fluctuation scope and a standard deviation.
Prefabricated rods external diameter Ф scope described in the present invention is 60～120mm, has fully satisfied common prefabricated rods and has made needs.
The present invention controls the axial external diameter distribution of the excellent transition section that sets out by adjusting, the core diameter that makes transition section and covering is than near isometrical section of rod and the covering core diameter ratio of setting out, improve prefabricated rods cutoff wavelength axial distribution, the qualified initial point position of cutoff wavelength is moved to connecing tail rod one lateral deviation, shorten itself and the spacing that connects the tail rod, adjustment optical fiber when reducing wire drawing, thus the optical fiber production cost reduced.
The present invention is further illustrated to close description of drawings and embodiment below.
[description of drawings]
1, Fig. 1: excellent transition section external diameter shape synoptic diagram sets out in the embodiment of the invention.
2, Fig. 2: shown in the prefabricated rods external diameter be Ф 80 front end 300mm by long distribution schematic diagram.
3, Fig. 3: shown in the prefabricated rods external diameter be the cutoff wavelength distribution schematic diagram of the front end 300mm of Ф 120.
Described 3 accompanying drawings
[embodiment]
A kind of production technique of improving the prefabricated rods cutoff wavelength, comprise the plug making, stretch and deposition reaction making prefabricated rods on plug, wherein the plug two ends connect tail rod and draw clavate and become the successive rod that sets out, stretch then, back plug and connect and form a transition section between the tail rod stretches, adjust the axial external diameter of transition section and distribute, the prefabricated rods external diameter coupling after making it and depositing covering, the cutoff wavelength of improving this part distributes.
Embodiment 1: as shown in Figure 1, the prefabricated rods external diameter Φ that produces by above-mentioned steps is 80mm, described transition segment length 180mm, the fine positioning of its top external diameter is put starting pitch rod 150mm, and external diameter is 0.93D, and this place is to the excellent isometrical side 100mm that sets out certainly, external diameter increases to 0.98D gradually, continue to increase from this direction, position isometrical side external diameter of rod then, carry out the transition on isometrical section of the rod that sets out, wherein D is the excellent isometrical section diameter that set out.As shown in Figure 2, detect the prefabricated rods that this method is made, the cutoff wavelength qualification rate has reached 100%, and fluctuation range is 17.0nm, and standard deviation is 11.78.
Embodiment 2 difference from Example 1 are that prefabricated rods external diameter Ф is 120mm, and rest part is identical with embodiment 1.As shown in Figure 3, detect the prefabricated rods that this method is made, the cutoff wavelength qualification rate has reached 100%, and fluctuation range is 18.8nm, and standard deviation is 12.84.
Claims (4)
1, a kind of production technique of improving the prefabricated rods cutoff wavelength, comprise plug making, stretching and covering deposition making prefabricated rods, wherein the plug two ends connect tail rod and draw clavate and become the successive rod that sets out, stretch then, back plug and connect and form a transition section between the tail rod stretches, it is characterized in that distributing by controlling the axial external diameter of this transition section, the prefabricated rods external diameter coupling after making it and depositing covering, the cutoff wavelength of improving this part distributes.
2, according to the described production technique of improving the prefabricated rods cutoff wavelength of claim, it is the thinnest on the whole rod that sets out it is characterized in that having on the described transition section place's external diameter, increase gradually to the axial external diameter in both sides from this place, carry out the transition to isometrical vertically part and set out on the rod.
3, the production technique of improving the prefabricated rods cutoff wavelength according to claim 1 and 2, it is characterized in that described transition segment length 180mm, the fine positioning of its top external diameter is put the isometrical side 150mm of starting pitch rod, the external diameter value is 0.93D, and to the isometrical side 100mm of rod that sets out, axially the external diameter value increases gradually from the thinnest place, reach 0.98D, continue to increase to the isometrical side external diameter of rod that sets out from this position, carry out the transition to the excellent equal-diameter part of setting out, diameter D is the upward external diameter value of equal-diameter part of rod of setting out.
4, the production technique of improving the prefabricated rods cutoff wavelength according to claim 1 is characterized in that described prefabricated rods external diameter Φ scope is 60～120mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510050239 CN100560523C (en) | 2005-04-13 | 2005-04-13 | A kind of production technique of improving the prefabricated rods cutoff wavelength |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510050239 CN100560523C (en) | 2005-04-13 | 2005-04-13 | A kind of production technique of improving the prefabricated rods cutoff wavelength |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1847180A true CN1847180A (en) | 2006-10-18 |
| CN100560523C CN100560523C (en) | 2009-11-18 |
Family
ID=37076957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510050239 Active CN100560523C (en) | 2005-04-13 | 2005-04-13 | A kind of production technique of improving the prefabricated rods cutoff wavelength |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100560523C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101560054B (en) * | 2009-05-25 | 2011-10-12 | 富通集团有限公司 | Method for shaping head of optical fiber preform |
| CN103663957A (en) * | 2013-12-23 | 2014-03-26 | 江苏亨通光电股份有限公司 | Quartz rod tail handle, grinding device and non-bubble welding method |
| CN108585469A (en) * | 2018-07-26 | 2018-09-28 | 杭州富通通信技术股份有限公司 | The preparation method of optical fiber |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2148273B (en) * | 1983-10-22 | 1986-11-05 | Standard Telephones Cables Ltd | Optical fibre fabrication by the rod-in-tube method |
| SE511083C2 (en) * | 1995-12-06 | 1999-08-02 | Sumitomo Electric Industries | Method of extending glass preform |
-
2005
- 2005-04-13 CN CN 200510050239 patent/CN100560523C/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101560054B (en) * | 2009-05-25 | 2011-10-12 | 富通集团有限公司 | Method for shaping head of optical fiber preform |
| CN103663957A (en) * | 2013-12-23 | 2014-03-26 | 江苏亨通光电股份有限公司 | Quartz rod tail handle, grinding device and non-bubble welding method |
| CN108585469A (en) * | 2018-07-26 | 2018-09-28 | 杭州富通通信技术股份有限公司 | The preparation method of optical fiber |
| CN108585469B (en) * | 2018-07-26 | 2021-02-12 | 杭州富通通信技术股份有限公司 | Method for producing optical fiber |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100560523C (en) | 2009-11-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105060701B (en) | A kind of preparation method of large scale bend-insensitive multimode optical fiber preform | |
| CN100395203C (en) | Method for preparing preformod of optical fiber with low water peak in large size | |
| EP4219418A1 (en) | Optical fiber drawing furnace, optical fiber preparation apparatus, optical fiber preparation method, and small-diameter optical fiber | |
| CN1847180A (en) | Production process capable of improving cut-off wavelength of fiber preform rod | |
| CN102073098B (en) | Broadband multi-mode optical fiber and manufacturing method thereof | |
| CN1884165A (en) | Method for preparing optical fiber by large-sized low-water-peak optical fiber preform and dedicated device therefor | |
| RU2243944C2 (en) | Method of production of optical fiber billet and design of torch to realize the method | |
| JP7061628B2 (en) | Photonic crystal fiber and its manufacturing method | |
| CN205333932U (en) | Novel extrusion formula mould | |
| JP4348341B2 (en) | Optical fiber preform manufacturing method | |
| CN1097034C (en) | Optic fibre preform and its making method | |
| RU2595030C2 (en) | Method for producing optical glass fiber primary preform, primary preform, final preform, optical glass | |
| JP4690979B2 (en) | Optical fiber preform manufacturing method | |
| CN203689166U (en) | Coating diameter on-line automatic control device during wire drawing process | |
| GB2214506A (en) | Method for producing glass preform for single mode optical fiber | |
| RU2427013C2 (en) | Method of making large-size optical fibre workpiece | |
| CN1197799C (en) | Sintering process for manufacturing prefabricated fiber rod | |
| RU2607566C2 (en) | Method of producing primary preform for optical fibres, primary preform, final preform, optical fibre | |
| CN112408776A (en) | Control method for improving parameter uniformity of optical fiber preform | |
| JP3576873B2 (en) | Manufacturing method of optical fiber preform | |
| JP4271125B2 (en) | Optical fiber preform drawing method | |
| KR100632155B1 (en) | Manufacturing method of optical fiber base material | |
| US5666454A (en) | Preform for optical fiber and method of producing optical fiber | |
| JP4037799B2 (en) | Optical fiber preform and manufacturing method thereof | |
| CN213416681U (en) | Device capable of adjusting coating die on line |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| PB01 | Publication | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20060804 Address after: Zhejiang city of Fuyang province Shou Jiang Zhen Zhu Jia Applicant after: Zhejiang Futong Optical Fiber Technology Co., Ltd. Address before: Fuyang City, Zhejiang Province, Silver Lake Development Zone Applicant before: Hangzhou Futong Communication Technology Co., Ltd. |
|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: FUTONG GROUP CO.,LTD. Free format text: FORMER OWNER: ZHEJIANG FUTONG OPTICAL FIBER TECHN CO., LTD. Effective date: 20070216 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20070216 Address after: 311400, No. 1-8, Fortis Science Park, Golden Autumn Road, Zhejiang, Fuyang Applicant after: Futong Group Co., Ltd. Address before: 311422 Zhejiang province Fuyang Shoujiang Zhu Jia Applicant before: Zhejiang Futong Optical Fiber Technology Co., Ltd. |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20191224 Address after: 311400 Building 9, Futong Science Park, No. 1-8, Jinqiu Avenue, Fuchun street, Fuyang District, Hangzhou City, Zhejiang Province Co-patentee after: Hangzhou Futong Communication Technology Co., Ltd. Patentee after: Futong Group Co., Ltd. Co-patentee after: Tianjin Futong Xinmao Science and Technology Co., Ltd. Co-patentee after: HANGZHOU FUTONG ELECTRIC WIRE & CABLE CO., LTD. Address before: 311400, No. 1-8, Fortis Science Park, Golden Autumn Road, Zhejiang, Fuyang Patentee before: Futong Group Co., Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 311400 Building 9, Futong Science Park, 1-8 Jinqiu Avenue, Fuchun street, Fuyang District, Hangzhou City, Zhejiang Province Patentee after: Futong Group Co.,Ltd. Patentee after: HANGZHOU FUTONG COMMUNICATION TECHNOLOGY Co.,Ltd. Patentee after: Tianjin Futong Information Technology Co.,Ltd. Patentee after: HANGZHOU FUTONG ELECTRIC WIRE & CABLE Co.,Ltd. Address before: 311400 Building 9, Futong Science Park, 1-8 Jinqiu Avenue, Fuchun street, Fuyang District, Hangzhou City, Zhejiang Province Patentee before: Futong Group Co.,Ltd. Patentee before: HANGZHOU FUTONG COMMUNICATION TECHNOLOGY Co.,Ltd. Patentee before: TIANJIN FUTONG XINMAO SCIENCE & TECHNOLOGY Co.,Ltd. Patentee before: HANGZHOU FUTONG ELECTRIC WIRE & CABLE Co.,Ltd. |