CN209685603U - It is a kind of for drawing the fiber drawing furnace of microstructured optical fibers - Google Patents
It is a kind of for drawing the fiber drawing furnace of microstructured optical fibers Download PDFInfo
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- CN209685603U CN209685603U CN201920332336.6U CN201920332336U CN209685603U CN 209685603 U CN209685603 U CN 209685603U CN 201920332336 U CN201920332336 U CN 201920332336U CN 209685603 U CN209685603 U CN 209685603U
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Abstract
The utility model devises a kind of for drawing the fiber drawing furnace of microstructured optical fibers, there are air pore structures or larger material to change for general microstructured optical fibers, it at high operating temperatures can deformation occurs is difficult to keep original design structure, the utility model is characterized in that: ultrashort hot-zone distribution, precise control of temperature can well keep the uniformity and integrality of optical fiber designs.This includes furnace body, insulating layer, heater, upper and lower graphite bushing for drawing the high temperature fiber drawing furnace major part of microstructured optical fibers；Heater is arranged in furnace body, and insulating layer is mounted between heater and furnace body, and upper and lower graphite bushing docks be placed in heater lower end up and down, is equipped with a temperature detection hole in the centre of furnace body and insulating layer.
Description
Technical field
The utility model belongs to optical fiber preparation technical field more particularly to a kind of for drawing the wire drawing of microstructured optical fibers
Furnace.
Background technique
With the development of optical fiber sensing technology, optical fiber structure design freedom is increasing, and optical fiber structure type is increasingly
It is more；Wherein hollow-core photonic crystal fiber belongs to one of microstructured optical fibers, it can be used as the core of resonance type optical fiber gyro, and one
Directly by external limiting inlet, the serious development for restricting China's high-precision optical fiber gyro.Resonance type optical fiber gyro is still in reality at present
Room conceptual phase is tested, matured product there is no to come out.Hollow-core photonic crystal fiber has better bending energy to bend-insensitive
Power is conducive to the miniaturization of optical fiber sensing ring, improves thermal stability.Therefore, develop hollow-core photonic crystal fiber, it is high-precision to promoting
The development of degree miniaturization resonance type optical fiber gyro has important impetus.
The key component of most microstructured optical fibers production includes the production of prefabricated rods and the accurate control of drawing process, is being drawn
The preform of centimetres at the microstructured optical fibers of micron dimension, while being kept optical fiber structure uniform complete by silk process
Whole, optical fiber property meets design requirement, is the maximum difficult point in manufacture craft.General microstructured optical fibers there are air pore structure or
Person has larger material to change, and each sub-assembly viscosity of prefabricated rods mismatches at high operating temperatures, and leading to optical fiber structure, deformation occurs
Relatively be hard to keep original design structure；Wherein the heterogeneity phantom of fiber drawing furnace directly influences the stability of optical fiber structure, therefore mostly
Higher requirement is distributed with to fiber drawing furnace hot-zone in microstructured optical fibers.
Utility model content
Technical problem to be solved by the utility model is to provide a kind of for drawing the fiber drawing furnace of microstructured optical fibers, excellent
Change the geometry of all kinds of microstructured optical fibers.
The technical scheme adopted by the utility model to solve the technical problem is as follows: providing a kind of for drawing microstructured optical fibers
Fiber drawing furnace, including furnace body, insulating layer, heater, upper graphite bushing, lower graphite bushing；Heater is arranged in furnace body, heat preservation
Mounted between heater and furnace body, upper graphite bushing, lower graphite bushing dock be placed in heater lower end up and down layer.
According to the above technical scheme, heater selects graphite material.
According to the above technical scheme, it is equipped with a temperature detection hole at the middle part of furnace body and insulating layer, temperature probe passes through infrared sense
Heater middle part surface temperature should be measured.
According to the above technical scheme, heater graphite purity < 5ppm, fever bulk resistor are 0.25~0.35 milliohm.
According to the above technical scheme, the graphite purity < 5ppm of upper graphite bushing, lower graphite bushing.
According to the above technical scheme, heater minimum diameter 20mm, 9~11mm of hot length, wire-drawing temperature 1800-2200
℃。
According to the above technical scheme, wire drawing preform diameter < 18mm.
The beneficial effect that the utility model generates is: for drawing microstructured optical fibers, optimizing the several of all kinds of microstructured optical fibers
The ultrashort hot-zone distribution of what structure, precise control of temperature keep the uniformity and integrality of optical fiber designs.
Detailed description of the invention
Below in conjunction with accompanying drawings and embodiments, the utility model is described in further detail, in attached drawing:
Fig. 1 is the structural schematic diagram for the fiber drawing furnace that the utility model embodiment is used to draw microstructured optical fibers.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only to explain this
Utility model is not used to limit the utility model.
As shown in Figure 1, provided in the embodiment of the present invention it is a kind of for drawing the fiber drawing furnace of microstructured optical fibers, including furnace body 1,
Insulating layer 2, heater 3, upper graphite bushing 4, lower graphite bushing 5；Heater be arranged in furnace body, insulating layer mounted in heater with
Between furnace body, upper graphite bushing, lower graphite bushing dock be placed in heater lower end up and down；In the central part of furnace body and insulating layer
Position is equipped with a temperature detection hole 6.Its heater internal diameter 20mm, hot length 10mm or so are different from traditional fiber drawing furnace, the fiber drawing furnace
It is only used for the following prefabricated stick drawn wire of 18mm diameter.Heater graphite purity < 5ppm, impurity content < 0.005%, heater is pure
It is better to spend higher fiber strength, fever bulk resistor is 0.25~0.35 milliohm.The graphite purity of upper graphite bushing, lower graphite bushing
< 5ppm.
There are air pore structures or larger material to change for general microstructured optical fibers, at high operating temperatures can deformation occurs very
Be hard to keep original design structure.The utility model is characterized in that: ultrashort hot-zone distribution, precise control of temperature perfect can keep light
The uniformity and integrality of fine design structure.
Microstructured optical fibers include solid core photonic crystal fiber, solid core polarization maintaining optical fibre, solid core multi-core optical fiber, hollow band gap light
The structures such as fine, hollow negative cruvature optical fiber；The high temperature fiber drawing furnace of the utility model design can be used for large core fiber, rotation in advance
The drawing of the common optical fiber in the sensings such as stick optical fiber processed, elliptical core fiber and laser application field.
It should be understood that for those of ordinary skills, it can be modified or changed according to the above description,
And all these modifications and variations all should belong to the protection scope of the appended claims for the utility model.
Claims (7)
1. a kind of for drawing the fiber drawing furnace of microstructured optical fibers, which is characterized in that including furnace body, insulating layer, heater, upper graphite
Bushing, lower graphite bushing；Heater is arranged in furnace body, and insulating layer is mounted between heater and furnace body, upper graphite bushing, lower stone
Black bushing docks be placed in heater lower end up and down.
2. according to claim 1 for drawing the fiber drawing furnace of microstructured optical fibers, which is characterized in that heater selects graphite
Material.
3. according to claim 1 or 2 for drawing the fiber drawing furnace of microstructured optical fibers, which is characterized in that in furnace body and guarantor
The middle part of warm layer is equipped with a temperature detection hole, and temperature probe measures heater middle part surface temperature by infrared induction.
4. according to claim 2 for drawing the fiber drawing furnace of microstructured optical fibers, which is characterized in that heater graphite purity
< 5ppm, fever bulk resistor are 0.25~0.35 milliohm.
5. according to claim 1 or 2 for drawing the fiber drawing furnace of microstructured optical fibers, which is characterized in that upper graphite bushing,
The graphite purity < 5ppm of lower graphite bushing.
6. according to claim 1 or 2 for drawing the fiber drawing furnace of microstructured optical fibers, which is characterized in that heater is minimum
Internal diameter 20mm, 9~11mm of hot length, 1800-2200 DEG C of wire-drawing temperature.
7. according to claim 1 or 2 for drawing the fiber drawing furnace of microstructured optical fibers, which is characterized in that wire drawing prefabricated rods
Diameter < 18mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920332336.6U CN209685603U (en) | 2019-03-15 | 2019-03-15 | It is a kind of for drawing the fiber drawing furnace of microstructured optical fibers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920332336.6U CN209685603U (en) | 2019-03-15 | 2019-03-15 | It is a kind of for drawing the fiber drawing furnace of microstructured optical fibers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209685603U true CN209685603U (en) | 2019-11-26 |
Family
ID=68605044
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920332336.6U Active CN209685603U (en) | 2019-03-15 | 2019-03-15 | It is a kind of for drawing the fiber drawing furnace of microstructured optical fibers |
Country Status (1)
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| CN (1) | CN209685603U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111186999A (en) * | 2020-02-18 | 2020-05-22 | 通鼎互联信息股份有限公司 | Vacuum wire drawing furnace for manufacturing optical fiber |
-
2019
- 2019-03-15 CN CN201920332336.6U patent/CN209685603U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111186999A (en) * | 2020-02-18 | 2020-05-22 | 通鼎互联信息股份有限公司 | Vacuum wire drawing furnace for manufacturing optical fiber |
| CN111186999B (en) * | 2020-02-18 | 2024-03-12 | 通鼎互联信息股份有限公司 | Vacuum drawing furnace for optical fiber manufacturing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200107 Address after: 430205 4th floor, optical fiber factory building, No. 101, special optical fiber Industrial Park (phase I), No. 80, Gaoxin 5th Road, Donghu New Technology Development Zone, Wuhan City, Hubei Province Patentee after: Wuhan Optical Valley changyingtong measurement Co., Ltd Address before: 430205 No. five, No. 80, hi tech Development Zone, East Lake New Technology Development Zone, Hubei, Wuhan Patentee before: Wuhan Yangtze Optical Electronic Co., Ltd. |