CN207760229U - A kind of photon crystal optical fiber preformed rod structure - Google Patents
A kind of photon crystal optical fiber preformed rod structure Download PDFInfo
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- CN207760229U CN207760229U CN201721829170.6U CN201721829170U CN207760229U CN 207760229 U CN207760229 U CN 207760229U CN 201721829170 U CN201721829170 U CN 201721829170U CN 207760229 U CN207760229 U CN 207760229U
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Abstract
The utility model discloses a kind of photon crystal optical fiber preformed rod structures, it is characterised in that is accumulated by more sticks, pipes inside prefabricated rods, material is pure quartz；Prefabricated rods are from the point of view of cross section, its agent structure is multilayer regular hexagon structure, hexagon center and six corners are capillary stick a (1), and the adjacent both sides in hexagon center are two capillary a (2), and hexagon rest part is (3) capillary b；Hexagon periphery is carried out spelling round processing by capillary stick b (4), capillary stick c (5), capillary stick d (6)；Prefabricated rods outermost is outer tube (7).Outer tube tail portion need to connect skirt, convenient for taking out negative pressure into prefabricated rods by skirt when preform.The preform arrangement that the utility model is made is uniform, stable, and the photonic crystal fiber loss drawn out is low, and polarization property is good, high mechanical strength, can industrialized production.
Description
Technical field
The utility model is related to a kind of photon crystal optical fiber preformed rod structure, the preform arrangement made with this structure is equal
Even, stable, the photonic crystal fiber loss drawn out is low, and polarization property is good, high mechanical strength, can industrialized production.
Background technology
Photonic crystal fiber is only made of a kind of material, and fibre core and covering are identical quartz material, are contained in covering
By the airport that ad hoc fashion arranges, this special structure allows light energy to be bound in fibre core with lower loss biography
It broadcasts.Since photonic crystal fiber has very high fibre core cladding index poor, bending loss is small, is conducive to the micro- of fibre optic gyroscope
Type, while can effectively improve the temperature stability of fibre optic gyroscope.Photonic crystal fiber can be theoretically readily available
The birefringence of an order of magnitude higher than common polarization maintaining optical fibre is conducive to the precision for improving fibre optic gyroscope.
The Chinese patent of application publication number CN201110157853《Photon crystal optical fiber preformed rod and its manufacture photonic crystal
The method of optical fiber》The preform arrangement of proposition is that fibre core is hollow structure, and does not mention the polarization that can improve optical fiber
Performance.The Chinese patent of application publication number CN200510024669《The preparation method of photon crystal optical fiber preformed rod》What is proposed is pre-
Stick structure processed is that fibre core is core-forming glass rod mixed with rare earth ion, and does not mention the polarization property that can improve optical fiber.
The Chinese patent of application publication number CN201220485277《Photon crystal optical fiber preformed rod structure》The preform arrangement of proposition is
Internal and external casing structure, can respectively apply internal and external casing different pressure, this structure can directly by preform at
Optical fiber, but structure is more complicated, and technical difficulty is higher.
In conclusion currently needing to propose a kind of photon crystal optical fiber preformed rod knot that can improve optical fiber polarisation performance
Structure, and the structure can take into account loss it is low, high mechanical strength makes the advantages that simple.
Invention content
The utility model discloses a kind of photon crystal optical fiber preformed rod structure, the inside configuration is by more quartzy capillarys
Stick, pipe are accumulated, and outside is quartzy outer tube, and outer tube tail portion is connected to skirt.By to capillary stick, pipe size and position
Adjusting, obtain suitable preform arrangement.The preform arrangement made with this structure is uniform, stable, and the photon drawn out is brilliant
Body fibre loss is low, and polarization property is good, high mechanical strength.
Technical solution used by the utility model is：Prefabricated rods, which make, uses method of piling, and several capillaries are piled into
Regular hexagon structure carries out equipotential replacement with the capillary of capillary stick and different boss ratio, then with capillary stick by hexagon
Circle processing is spelled in periphery, and all capillary sticks, pipe, which are then welded into an entirety, accumulates stick, ensures that all capillary one end are shut,
The other end opens wide, and finally accumulation stick is put into casing and is fixed, ensures that capillary shuts one end towards skirt direction.Prefabricated rods are drawn
When processed, a certain size negative pressure need to be taken out into skirt, ensured to contract in the gap between capillary wall and wall dead, formed photonic crystal
Optical fiber secondary prefabricated rods.Secondary prefabricated rods can directly be drawn into optical fiber, positive pressure need to be added to adjust into secondary prefabricated rods when drawing
Save the size of optical fiber airport.
Compared with prior art, the utility model has the beneficial effects that：
1, by introducing two macropores to preform core both sides, not rounded symmetrical structure is formed so that photonic crystal fiber
Polarization property improve a lot, be conducive to the precision of fibre optic gyroscope.
2, by the way that six corners of hexagon are replaced with quartz pushrod, sphering has empty region, increases quartz layer area and accounts for
Than, and then improve mechanical fiber optic intensity.
3, the utility model is simple in structure, and outer tube is connected with skirt, and when preform only needs to take out negative pressure into skirt,
Technical difficulty is relatively low.
Description of the drawings
Fig. 1 is photon crystal optical fiber preformed rod schematic cross-section.
Fig. 2 is photon crystal optical fiber preformed rod side schematic view.
Quartz pushrod a-1 in figure, quartz ampoule a-2, quartz ampoule b-3, quartz pushrod b-4, quartz pushrod c-5, quartz pushrod d-6, housing
Pipe -7, skirt -8 accumulate stick -9.
Specific implementation mode
The utility model is further illustrated below in conjunction with the accompanying drawings.
Photon crystal optical fiber preformed rod section is as shown in Figure 1, its structure is stick core, macropore pipe, aperture successively from inside to outside
Pipe, periphery spell circle quartz pushrod, outer tube.Photon crystal optical fiber preformed rod side is as shown in Fig. 2, accumulation stick is integrally put into outer tube
In, outer tube tail end is connected to skirt.
The specific manufacturing process of photon crystal optical fiber preformed rod is as follows：
It, is drawn into capillary stick, pipe by the former stick of quartz, the pipe for 1, selecting suitable size respectively in fiber drawing furnace.
2, one end of all capillaries is sealed with oxyhydrogen flame.
3, by capillary b（3）It is piled into regular hexagon structure, is paid attention to sealing end both facing to the same side.
4, by Fig. 1 by the capillary b at hexagon center and six corners（3）Replace with capillary stick a（1）, will be in hexagon
Two capillary b of the adjacent both sides of the heart（3）Replace with capillary a（2）, capillary a（2）Sealing end and capillary b（3）Envelope
Mouthful end is towards the same side.
5, Fig. 1 is pressed by hexagon periphery capillary stick b（4）, capillary stick c（5）, capillary stick d（6）It carries out spelling round processing.
6, above-mentioned packed structures are welded with oxyhydrogen flame in one end of capillary channel closure, all capillary sticks, pipe is welded
It is connected into an entirety, referred to as accumulates stick（9）.One end of capillary channel closure is known as to accumulate stick（9）Tail portion, the other end is known as heap
Product stick（9）Head.
7, stick will be drawn（8）It is welded to outer tube（7）One end, ensure sealing joint it is air tight.
8, stick will be accumulated（9）It is put into outer tube（7）In, pay attention to that stick will be accumulated（9）Tail portion is towards skirt direction.
9, from accumulation stick（9）Tail portion starts, and takes tail portion to the position of cephalad direction about 3cm, uniform in outer tube surrounding
2 ~ 4 points are taken, fixed point welding is carried out with oxyhydrogen flame, stick will be accumulated（9）With outer tube（7）It is fixed together, forms whole light
Photonic crystal fiber prefabricated rods.
Embodiment 1：
1, quartz capsule/stick drawing that outer diameter is 20mm is chosen into the stone of outer diameter 1.8mm at the quartz pushrod of several different sizes
English stick（1）7, the quartz pushrod of outer diameter 1.5mm（4）6, the quartz pushrod of outer diameter 1.3mm（5）12, the quartz pushrod of outer diameter 0.8mm
（6）12.It is 20mm by outer diameter, it is 1.8mm that the quartz ampoule that internal diameter is 14mm, which is drawn into outer diameter, and internal diameter is the quartz ampoule of 1.2mm
（3）, choose 91.It is 20mm by outer diameter, it is 1.8mm that the quartz ampoule that internal diameter is 18mm, which is drawn into outer diameter, and internal diameter is the stone of 1.6mm
Ying Guan（2）, choose wherein 2.
2, the capillary stick of above-mentioned size, pipe are piled into 6 layers of hexgonal structure according to Fig. 1, and are replaced and spell circle.
3, it is 30mm to choose outer diameter, and internal diameter is the outer tube of 20mm（7）, it is 26mm with outer diameter, internal diameter is the skirt of 23mm
（8）It is welded.Stick will be accumulated again（9）It is put into outer tube（7）In fixed by spot welding.
4, prefabricated rods are drawn on wire-drawer-tower with 1900 ± 10 DEG C of temperature, while is extracted into stick by skirt
The negative pressure of 10kPa forms secondary prefabricated rods.
5, secondary prefabricated rods are drawn on wire-drawer-tower with 1920 ± 10 DEG C of temperature, while 1000 is added into stick
The positive pressure of ~ 8000Pa, you can be drawn into photonic crystal fiber.
Claims (10)
1. a kind of photon crystal optical fiber preformed rod structure, it is characterised in that it is accumulated by more capillary sticks, pipes inside prefabricated rods,
Its material is pure quartz；Prefabricated rods periphery is outer tube, and material is also pure quartz.
2. a kind of photon crystal optical fiber preformed rod structure according to claim 1, it is characterised in that be between capillary stick, pipe
Triangle is accumulated, and agent structure is multilayer regular hexagon structure after accumulation.
3. a kind of photon crystal optical fiber preformed rod structure according to claim 1 or 2, it is characterised in that hexgonal structure
The number of plies is 4 ~ 8 layers.
4. a kind of photon crystal optical fiber preformed rod structure according to claim 1, it is characterised in that hexagon center and six
A corner is capillary stick a（1）, outer diameter size is 1.7 ~ 1.8mm.
5. a kind of photon crystal optical fiber preformed rod structure according to claim 1, it is characterised in that hexagon center is adjacent
Both sides are two capillary a（2）, outer diameter size is 1.7 ~ 1.8mm, and inner diameter size is 1.4 ~ 1.6mm.
6. a kind of photon crystal optical fiber preformed rod structure according to claim 1, it is characterised in that hexagon rest part
It is capillary b（3）, outer diameter size is 1.7 ~ 1.8mm, and inner diameter size is 1.1 ~ 1.3mm.
7. a kind of photon crystal optical fiber preformed rod structure according to claim 1, it is characterised in that hexagon periphery is by hair
Thin stick b（4）, capillary stick c（5）, capillary stick d（6）It carries out spelling round processing, wherein capillary stick b（4）Outer diameter size be 1.4 ~
1.5mm, capillary stick c（5）Outer diameter size be 1.2 ~ 1.3mm, capillary stick d（6）Outer diameter size be 0.8 ~ 0.9mm.
8. a kind of photon crystal optical fiber preformed rod structure according to claim 1, it is characterised in that prefabricated rods outermost is
Outer tube（7）, outer diameter size is 28 ~ 35mm, and inner diameter size is 19 ~ 22mm.
9. a kind of photon crystal optical fiber preformed rod structure according to claim 1, it is characterised in that outer tube tail portion need to connect
Skirt（8）, skirt length is not less than 400mm.
10. a kind of photon crystal optical fiber preformed rod structure according to claim 1, it is characterised in that outer tube（7）And heap
Product stick（9）Between fixed form can be fixed point welding or one kind in being mechanically fixed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721829170.6U CN207760229U (en) | 2017-12-25 | 2017-12-25 | A kind of photon crystal optical fiber preformed rod structure |
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| CN201721829170.6U CN207760229U (en) | 2017-12-25 | 2017-12-25 | A kind of photon crystal optical fiber preformed rod structure |
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| CN207760229U true CN207760229U (en) | 2018-08-24 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109143460A (en) * | 2018-09-12 | 2019-01-04 | 华中科技大学 | A kind of negative cruvature hollow-core fiber and preparation method thereof |
| CN111635125A (en) * | 2020-04-21 | 2020-09-08 | 艾菲博(宁波)光电科技有限责任公司 | Preparation method of high-duty-ratio image optical fiber bundle formed by multi-core micro-structures |
| CN111635126A (en) * | 2020-04-21 | 2020-09-08 | 艾菲博(宁波)光电科技有限责任公司 | Preparation process and preparation device of multi-core single-mode/multi-core few-mode communication optical fiber |
| CN111847862A (en) * | 2020-07-27 | 2020-10-30 | 武汉长盈通光电技术股份有限公司 | Preparation method of photonic crystal optical fiber preform and tube arranging device thereof |
| CN114804617A (en) * | 2021-01-29 | 2022-07-29 | 大族激光科技产业集团股份有限公司 | Photonic crystal fiber drawing method and photonic crystal fiber |
| CN115784602A (en) * | 2022-12-08 | 2023-03-14 | 锐光信通科技有限公司 | Preparation method of quartz-based image transmission optical fiber and quartz-based image transmission optical fiber |
-
2017
- 2017-12-25 CN CN201721829170.6U patent/CN207760229U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109143460A (en) * | 2018-09-12 | 2019-01-04 | 华中科技大学 | A kind of negative cruvature hollow-core fiber and preparation method thereof |
| CN111635125A (en) * | 2020-04-21 | 2020-09-08 | 艾菲博(宁波)光电科技有限责任公司 | Preparation method of high-duty-ratio image optical fiber bundle formed by multi-core micro-structures |
| CN111635126A (en) * | 2020-04-21 | 2020-09-08 | 艾菲博(宁波)光电科技有限责任公司 | Preparation process and preparation device of multi-core single-mode/multi-core few-mode communication optical fiber |
| CN111847862A (en) * | 2020-07-27 | 2020-10-30 | 武汉长盈通光电技术股份有限公司 | Preparation method of photonic crystal optical fiber preform and tube arranging device thereof |
| CN111847862B (en) * | 2020-07-27 | 2021-10-01 | 武汉长盈通光电技术股份有限公司 | Preparation method of photonic crystal optical fiber preform and tube arranging device thereof |
| CN114804617A (en) * | 2021-01-29 | 2022-07-29 | 大族激光科技产业集团股份有限公司 | Photonic crystal fiber drawing method and photonic crystal fiber |
| CN114804617B (en) * | 2021-01-29 | 2024-01-23 | 大族激光科技产业集团股份有限公司 | Drawing method of photonic crystal fiber and photonic crystal fiber |
| CN115784602A (en) * | 2022-12-08 | 2023-03-14 | 锐光信通科技有限公司 | Preparation method of quartz-based image transmission optical fiber and quartz-based image transmission optical fiber |
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Address after: 101111 No.5 Xingguang 4th Street, Tongzhou District, Beijing Patentee after: Beijing Glass Research Institute Co.,Ltd. Address before: 101111 No.5 Xingguang 4th Street, Tongzhou District, Beijing Patentee before: BEIJING GLASS Research Institute |
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