CN1673138A - Prepn process of prefabricated rod for photon crystal fiber - Google Patents
Prepn process of prefabricated rod for photon crystal fiber Download PDFInfo
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- CN1673138A CN1673138A CN 200510024669 CN200510024669A CN1673138A CN 1673138 A CN1673138 A CN 1673138A CN 200510024669 CN200510024669 CN 200510024669 CN 200510024669 A CN200510024669 A CN 200510024669A CN 1673138 A CN1673138 A CN 1673138A
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- 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
- C03B37/01211—Manufacture of preforms for drawing fibres or filaments starting from tubes, rods, fibres or filaments by inserting one or more rods or tubes into a tube
- C03B37/0122—Manufacture of preforms for drawing fibres or filaments starting from tubes, rods, fibres or filaments by inserting one or more rods or tubes into a tube for making preforms of photonic crystal, microstructured or holey optical fibres
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- 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
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2203/00—Fibre product details, e.g. structure, shape
- C03B2203/02—External structure or shape details
- C03B2203/04—Polygonal outer cross-section, e.g. triangular, square
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2203/00—Fibre product details, e.g. structure, shape
- C03B2203/10—Internal structure or shape details
- C03B2203/12—Non-circular or non-elliptical cross-section, e.g. planar core
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2203/00—Fibre product details, e.g. structure, shape
- C03B2203/10—Internal structure or shape details
- C03B2203/14—Non-solid, i.e. hollow products, e.g. hollow clad or with core-clad interface
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2203/00—Fibre product details, e.g. structure, shape
- C03B2203/42—Photonic crystal fibres, e.g. fibres using the photonic bandgap PBG effect, microstructured or holey optical fibres
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- Optics & Photonics (AREA)
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Abstract
The preparation process of prefabricated rod for photon crystal fiber includes the following steps: preparing capillary with sealed ends, outer glass pipe with one sealed end and glass core rod; setting the glass core rod inside outer glass pipe coaxially and arranging the capillaries orderly inside the outer glass pipe; setting the filled outer glass pipe inside fiber heating furnace with the opened end upwards; starting the vacuum pumping set and the heater to reach the required vacuum degree and temperature, moving the filled outer glass pipe downwards with the feeding mechanism for one period of homogeneous heating, and cooling to form the prefabricated rod for photon crystal fiber. The present invention has no interface scattering.
Description
Technical field
The present invention relates to photonic crystal fiber, particularly a kind of preparation method of photon crystal optical fiber preformed rod.
Background technology
Photonic crystal fiber is the focus in opticfiber communication in recent years and optical fiber laser field.Photonic crystal fiber is a kind of 2 D photon crystal, and airport periodically is distributed in the glass host material on the optical wavelength yardstick in the cross section that its common structure is an optical fiber.By service wire defective in periodic structure, replace airport such as the size that changes the aperture or with glass, form photonic crystals optical fiber structure.Defective constitutes the fibre core of photonic crystal fiber, and the outer periodic structure of defective constitutes covering, and light is propagated in defective.Difference photonic crystal fiber according to leaded light mechanism roughly is divided into two kinds, i.e. effective refractive index type and band gap waveguide type.In effective refractive index type photonic crystal fiber, fibre core is real core, and small airport has reduced the effective refractive index of covering, thereby light can be limited in the higher relatively fibre core of specific refractory power by total reflection mechanism and propagate.This photonic crystal fiber has many character that traditional fiber does not have, such as, single mode transport ceaselessly, big die face is long-pending, anomalous dispersion etc.Ceaselessly long-pending these character of single mode transport and big die face make active doped photon crystal optical fiber to be applied to easily in superpower single mode fiber laser and the fiber amplifier to go.Band gap waveguide type photonic crystal fiber requires small blank pipe to be special orderly periodic arrangement, to form photon band gap, even therefore fiber optic hub is hollow, because photon local effect, light also can be trapped in intermediate conveyor, so just can not produce absorption, scattering and significant non-linear optical effect to light, this optical fiber can produce special optical function.Band gap waveguide type photonic crystal fiber is compared with traditional fiber, photonic crystal fiber shows many novelties and unique character, as the mobility of ceaselessly single mode, zero-dispersion wavelength position, super flat low chromatic dispersion, high power transmission, high non-linearity effect, high birefringence etc., these characteristics promote the development of optical communication and photonics technology and use significant for the deficiency that remedies traditional fiber.Thereby the theoretical modeling of the manufacturing technology of photonic crystal becomes the another important focus in photonics field rapidly.The core of the technology of preparing of photonic crystal fiber is the making of prefabricated rods.
Since the photonic crystal fiber that drew out first in the world truly in 1996, the manufacturing technology of the prefabricated rods of photonic crystal fiber and technology just are regarded as the core technology in this field, from document and the patent of openly reporting in recent years, the preparation of photon crystal optical fiber preformed rod mainly contains two kinds, a kind of is the method for piling up, exactly that geometrical dimension and physicochemical property are identical kapillary according to certain crystalline structure be arranged in as the thin rod of fibre core or capillaceous around, tie into these kapillaries a branch of with the metal tantalum wire then, with its drawing-down, the thin rod of gained is exactly a photon crystal optical fiber preformed rod on common fibre-optical drawing tower.Generally adopt quartz capillary is arranged according to closelypacked hexangle type is deposited in around the quartz glass bar, and this quartz glass bar can be rare earth ion doped, to satisfy the needs of optical fiber laser or fiber amplifier.Also can fetter kapillary, these kapillaries that sequence are placed the Glass tubing of interior shape and its coupling, also can constitute the prefabricated rods of photonic crystal fiber without the metal tantalum wire.In the prefabricated rods of preparation band gap wave guide photon crystal optical fiber, what generally adopt is that one of intermediary or several kapillary of regularly arranged quartz capillary bundle are taken away, form bigger air gap, to constitute the prefabricated rods of band gap wave guide photon crystal optical fiber.Another prefabricated rods preparation method is an extrusion process, place the extruding stove to heat in blocky glass, the extruding stove is vertically placed, fire door upwards, the fire door top of extruding stove is the hydraulic pressure extrusion head, this hydraulic pressure extrusion head combines closely with extruding stove fire door, the hydraulic pressure extrusion head can move up and down along the inwall of extruding stove, stainless steel mould is placed in the bottom of extruding stove, the shape of this mould is made similar to the cross-sectional shape of the photonic crystal of being wanted and the complementary shape, such as the cell structure that has some and photonic crystal fiber cross section similar complementary on mould.The temperature of extruding stove can be regulated automatically according to program, behind the softening temperature of furnace temperature a little more than block glass, block glass promptly begins to soften, drive the hydraulic pressure extrusion head, regulate pressure to proper level, open the valve of extruding stove below, remollescent glass promptly is extruded the extruding stove under the driving of hydraulic pressure extrusion head, form the long strip shape prefabricated rods, and the cross section of this prefabricated rods has and the complementary cell structure similar to the stainless steel mould cell structure.At present, the technology for preparing prefabricated rods with the method for piling up has obtained using widely in drawing the silica glass photonic crystal fiber, and reaches its maturity.Pile up legal system and be equipped with glass material or the polymer materials that the prefabricated rods technology almost can be applied to any softening point temperature, and it is very accurate that cross-sectional shape can be controlled, and unique shortcoming is that the fiber core and the interface loss between the covering that draw are not easy to eliminate.The technology for preparing prefabricated rods with extrusion process mainly is the photonic crystal fiber that is used for drawing low softening point glass or polymkeric substance, such as silicate glass, and phosphate glass etc.The advantage of extrusion process is that there is not the interface loss between fibre core and the material around in the optical fiber of prepared prefabricated rods through obtaining after the wire drawing.The cross-sectional shape of the prefabricated rods that extrusion process draws is because the effect between mould and the glass material becomes irregular, and the quantity of eyelet can not be too much, the prefabricated rods of extrusion process making can easily not be doped into rare earth ion at regional area in addition, so the technology of extrusion process making preform is subjected to bigger restriction.
Summary of the invention
The objective of the invention is to solve and pile up the interface loss problem of bringing when legal system is made photonic crystal fiber, a kind of preparation method of photon crystal optical fiber preformed rod is provided, the technology of any making photon crystal optical fiber preformed rod that the present invention is different from the past.
Technical solution of the present invention is as follows:
A kind of preparation method of photon crystal optical fiber preformed rod is characterized in that the step of this method is as follows:
1. prepare respectively with the identical glass of glass matrix composition have sealed at both ends kapillary, the outer casing glass tube and the core-forming glass rod of an end closure;
2. described core-forming glass rod is inserted in the described outer casing glass tube, described kapillary is arranged in the described outer casing glass tube in an orderly manner, guarantees that described core-forming glass rod is positioned at the geometric centre position of described outer casing glass tube and parallel with the axis of described outer casing glass tube;
3. the opening with the outer casing glass tube of populated kapillary and core-forming glass rod is suspended in the optical fiber process furnace up, and the opening end of outer casing glass tube and the vacuum pipe of vacuum unit are tightly connected, and regulates the feed mechanism of fixed jacket Glass tubing;
4. set softening point temperature+50 ℃ of the Heating temperature=frit of process furnace～200 ℃ according to the softening temperature of frit;
5. start the vacuum unit outer casing glass tube is vacuumized, start the process furnace heating, when temperature reached set(ting)value, feed mechanism slowly moved downward outer casing glass tube, and behind the even heating certain hour, the cooling back forms photon crystal optical fiber preformed rod.
Air pressure in the described kapillary 〉=1 normal atmosphere.
The inside and outside geometrical shape that is shaped as rule of described kapillary cross section with symmetry centre.
Described outer shape capillaceous is circular, or regular polygon.
The kapillary that is arranged in the core-forming glass rod periphery is divided into several zones, and the interior shape capillaceous in each zone is inequality.
The outer shape of described core-forming glass rod is the geometrical shape with rule of symmetry centre.
Described core-forming glass rod can be made of several identical glass sticks.
Described core-forming glass rod is mixed with rare earth ion.Described rare earth ion is ytterbium ion, erbium ion, neodymium ion or thulium ion, or different kinds of ions is mixed altogether.
It is 60 ° rhombus that the inner section of described outer casing glass tube is shaped as circle, regular hexagon, square, rectangle, equilateral triangle or acute angle.
Between described kapillary and the kapillary, or between kapillary and the core-forming glass rod, or be filled with the solid slim glass stick between the glass stick of formation core-forming glass rod.
Described host glass is silica glass, silicate glass or phosphate glass.
Described process furnace is uniform tube furnace in temperature field or wire-drawer-tower process furnace.
When described host glass was silicate glass, the Heating temperature in the wire-drawer-tower process furnace was 1780 ℃～1930 ℃, and heat-up time was greater than 110 minutes.
When described host glass was silicate glass, the Heating temperature in the wire-drawer-tower process furnace was 600 ℃～850 ℃, 110 minutes heat-up times.
When described host glass was phosphate glass, the Heating temperature in the wire-drawer-tower process furnace was 550 ℃～650 ℃, 85～100 minutes heat-up times.
Described core-forming glass rod is the one-tenth core glass pipe of sealing two ends.
Beneficial effect of the present invention is: a kind of method of making photon crystal optical fiber preformed rod is provided, and this method can overcome general employing and pile up the interface scattering problem that the legal system prefabricated rods is brought.
Description of drawings
Fig. 1 makes the schema of photon crystal optical fiber preformed rod for the present invention.
The synoptic diagram that Fig. 2 arranges for outer casing glass tube, kapillary and core-forming glass rod in the first embodiment of the invention.
The synoptic diagram that Fig. 3 arranges for outer casing glass tube, kapillary and core-forming glass rod in the second embodiment of the invention.
The synoptic diagram that Fig. 4 arranges for outer casing glass tube, kapillary and core-forming glass rod in the third embodiment of the invention.
The synoptic diagram that Fig. 5 arranges for outer casing glass tube, kapillary and core-forming glass rod in the fourth embodiment of the invention.
The synoptic diagram that Fig. 6 arranges for outer casing glass tube, kapillary and core-forming glass rod in the fifth embodiment of the invention.
Fig. 7 is outer casing glass tube, the kapillary of different zones and the synoptic diagram that core-forming glass rod is arranged in the sixth embodiment of the invention.
Embodiment
For the present invention more clearly is described, the invention will be further described below in conjunction with embodiment and accompanying drawing, but should not limit protection scope of the present invention with this.
Fig. 1 makes the schema of photon crystal optical fiber preformed rod for the present invention.Left-hand component is that core-forming glass rod 1 and kapillary 2 are inserted the synoptic diagram in the outer casing glass tube 3, and core-forming glass rod 1 and kapillary 2 are all inserted outer casing glass tube 3 along arrow direction indication straight down.Right-hand component is that the outer casing glass tube 3 that fills kapillary 2 and core-forming glass rod 1 places the process of process furnace 4 heating, and in this process, outer casing glass tube 3 opening ends link to each other with vacuumizing device 5, to keep the subatmospheric in outer casing glass tube 3 pipes.Be higher than between 50 ℃～200 ℃ of the softening point temperatures of frit about 120 minutes in the temperature of keeping process furnace, outer casing glass tube 3 shrinks and tightly bonds together with kapillary 2 in the pipe, and simultaneously, outer casing glass tube 3 is elongated.
Fig. 2 is capillaceous arranging in the outer casing glass tube in the first embodiment of the invention.Wherein outer casing glass tube 3 adopts pure quartz glass, and its inner face regular hexagon length of side is 11.3mm, and the outside circular diameter is 25.7mm.The kapillary 2 of arranging in the outer casing glass tube 3 adopts the glass identical with outer casing glass tube, its external diameter is 2mm, internal diameter is 1mm, kapillary 2 equal sealing two ends, 2 one-tenth the tightst arranging of hexangle type of kapillary, be positioned at kapillary 2 arrange central authorities be core-forming glass rod 1, adopt the adulterated aluminium silica glass of mixing of ytterbium ion, wherein the doping content of ytterbium ion is 6000ppm, and this core-forming glass rod 1 is a hexagonal plum blossom valve structure, and it is 6mm along the axial overall dimension of symmetry.Contact evenly between core-forming glass rod 1 and the kapillary 2.The present invention can also mix other rare earth ion according to actual needs in core-forming glass rod 1, such as neodymium ion, and erbium ion, thulium ion etc.More than arranging and need being placed on temperature is heating 110 minutes in 1780 ℃ the uniform common tube furnace in temperature field.
Fig. 3 is capillaceous arranging in the outer casing glass tube in the second embodiment of the invention.Outer casing glass tube 3 internal diameters are 30.3mm, and external diameter is 34mm, and the internal diameter of the sealed at both ends kapillary 2 in the outer casing glass tube is 1.5mm, and external diameter is 2mm, adopt the tightst arrangement of sexangle.Being positioned at kapillary 2, to arrange the most central be that an internal diameter is 5.5mm, and external diameter is the sealed at both ends one-tenth core glass pipe 6 of 6mm, and this one-tenths core glass pipe 6 is excellent 7 fillings of solid glass of 0.5mm with diameter with the gap between the kapillary 2 on every side.Gap between kapillary 2 and the outer casing glass tube 3 is respectively 1.8mm with diameter, 2.2mm, and the solid glass rod 8 of 2.5mm is filled.Outer casing glass tube 3, kapillary 2 become core glass pipe 6, and solid glass rod 8 is identical silica glass material.This is arranged after vacuumizing heating in the resulting prefabricated rods, become 6 meetings of core glass pipe and its glass stick 8 on every side, kapillary 2 fuses together fully, after wire drawing, become the core glass pipe in optical fiber, to form big air gap, constitute band gap waveguide type photonic crystal fiber.More than arranging and need being placed on temperature is heating 120 minutes in 1850 ℃ the fiber-pulling machine process furnace.
Fig. 4 is capillaceous arranging in the outer casing glass tube in the third embodiment of the invention.Outer casing glass tube 3 is the square glass pipe, and the length of side of its inner square is 21mm, and the length of side of outer square is 26mm.The internal diameter of sealed at both ends kapillary 2 is 1mm, and external diameter is 2mm, and kapillary 2 dreit)s are arranged.The central authorities that kapillary 2 is arranged are four glass sticks that diameter is 2mm, and these four glass stick dreit)s are arranged, and constitute core-forming glass rod 1.Between glass stick and the glass stick, between glass stick and the kapillary, and be that 0.81 thin glass stick 9 is filled with diameter between kapillary and the kapillary.The material that this arrangement is adopted is quartz glass material.Wherein core-forming glass rod 1 is the adulterated quartz glass bar of ytterbium ion, and doping content is 8000ppm, should also be mixed with aluminum ion in the rod simultaneously.The present invention can also mix other rare earth ions in glass stick 1.More than arranging and need being placed on temperature is heating 120 minutes in 1930 ℃ the uniform common tube furnace in temperature field.
Fig. 5 is capillaceous arranging in the outer casing glass tube in the fourth embodiment of the invention.Outer casing glass tube 3 is the equilateral triangle silicate glass tube, and the length of side of its inside triangle is 22mm, and the length of side of external triangular is 25.5mm.Sealed at both ends kapillary 2 outer shape are regular hexagon, and its length of side is 1mm, and interior shape is circular, and its diameter is 1mm, adopts silicate glass tube.The tightst arrangement of 2 one-tenth positive hexangle types of kapillary, what be positioned at capillary array central authorities is the core-forming glass rod 1 that is made of three positive hexangle type glass sticks, and these glass sticks are for being mixed with the silicate glass rod of 1.8% (wt) neodymium ion, and the length of side of regular hexagon is 1mm.More than arranging and need being placed on temperature is heating 120 minutes in 750 ℃ the fiber-pulling machine process furnace.
Fig. 6 is capillaceous arranging in the outer casing glass tube in the fifth embodiment of the invention.Outer casing glass tube 3 is the equilateral rhombus at 60 degree angles for acute angle, and the length of side of its interior diamond is 18.2mm, and the outside rhombohedral length of side is 20.2mm.The interior shape of sealed at both ends kapillary 2 is an equilateral triangle, its length of side is 1mm, outer shape is positive hexangle type, its length of side is 1.0mm, 2 one-tenth the tightst arrangements of regular hexagon of kapillary, be positioned at kapillary 2 and arrange the core-forming glass rod of being made up of four regular hexagon glass sticks 1 of central authorities, the regular hexagon length of side is 1mm.Used glass material is phosphate glass among this embodiment.More than arranging and need being placed on temperature is heating 90 minutes in 600 ℃ the fiber-pulling machine process furnace.
Fig. 7 arranges for kapillary and glass stick in the outer casing glass tube in the sixth embodiment of the invention.Outer casing glass tube is 3 to be orthohexagonal Glass tubing inside and outside being, the outside length of side is 17mm, and the inner length of side is 15.5mm.Sealed at both ends kapillary 2 inside and outside shapes are circle, are distributed in four zones, are respectively kapillary 10, kapillary 11, kapillary 12 and kapillary 13, and external diameter all is 2mm, and internal diameter is respectively 1.8mm, 1.5mm, 1.5mm, 0.5mm.What be positioned at capillary array central authorities is core-forming glass rod 1 by six roots of sensation cylindrical glass bar construction, and the diameter of glass stick is 2mm.These kapillaries and outer casing glass tube are silica glass, and the material that core-forming glass rod adopts is the ytterbium ion doped silica glass, and wherein the doping content of ytterbium ion is 6000ppm.This is arranged in temperature is heating 120 minutes in 1850 ℃ the fiber-pulling machine process furnace.The photonic crystal fiber of this prefabricated rods through obtaining after the wire drawing can be used as the working medium that produces single-mode laser in 660nm arrives the 1550nm wavelength, and simultaneously, this optical fiber has the guarantor's bias energy at the 1064nm place.
Claims (10)
1, a kind of preparation method of photon crystal optical fiber preformed rod is characterized in that the step of this method is as follows:
1. prepare outer casing glass tube (3) and core-forming glass rod (1) respectively with the identical glass of glass matrix composition with sealed at both ends kapillary (2), an end closure;
2. described core-forming glass rod (1) is inserted described outer casing glass tube (3), described kapillary (2) is arranged in the described outer casing glass tube (3) in an orderly manner, guarantees that described core-forming glass rod (1) is positioned at the geometric centre position of described outer casing glass tube (3) and parallel with the axis of described outer casing glass tube (3);
3. the opening with the outer casing glass tube (3) of populated kapillary (2) and core-forming glass rod (1) is suspended in the optical fiber process furnace (4) up, the opening end of outer casing glass tube (3) and the vacuum pipe of vacuum unit are tightly connected, regulate the feed mechanism of fixed jacket Glass tubing (3);
4. set Heating temperature=softening point temperature+50 ℃ of process furnace (4)～200 ℃ according to the softening temperature of frit;
5. start the vacuum unit outer casing glass tube (3) is vacuumized, start process furnace (4) heating, when all reaching set(ting)value, feed mechanism slowly moves downward outer casing glass tube (3), and behind the even heating certain hour, the cooling back forms photon crystal optical fiber preformed rod.
2, the preparation method of photon crystal optical fiber preformed rod according to claim 1 is characterized in that air pressure 〉=1 normal atmosphere in the described kapillary (2).
3, the preparation method of photon crystal optical fiber preformed rod according to claim 1 is characterized in that the inside and outside geometrical shape that is shaped as the rule with symmetry centre of described kapillary (2) cross section.
4, the preparation method of photon crystal optical fiber preformed rod according to claim 1 is characterized in that the kapillary that is arranged in the core-forming glass rod periphery is divided into several zones, and the interior shape capillaceous in each zone is inequality.
5, the preparation method of photon crystal optical fiber preformed rod according to claim 1, the outer shape that it is characterized in that described core-forming glass rod (1) is the geometrical shape with rule of symmetry centre.
6, the preparation method of photon crystal optical fiber preformed rod according to claim 1 is characterized in that described core-forming glass rod (1) is mixed with rare earth ion.
7, it is 60 ° rhombus that the preparation method of photon crystal optical fiber preformed rod according to claim 1, the inner section that it is characterized in that described outer casing glass tube (3) are shaped as circle, regular hexagon, square, rectangle, equilateral triangle or acute angle.
8, the preparation method of photon crystal optical fiber preformed rod according to claim 1, it is characterized in that between described kapillary (2) and the kapillary (2), or between kapillary (2) and the core-forming glass rod (1), or be filled with the solid slim glass stick between the glass stick of formation core-forming glass rod (1).
9, the preparation method of photon crystal optical fiber preformed rod according to claim 1 is characterized in that described host glass is silica glass, silicate glass or phosphate glass.
10,, it is characterized in that described core-forming glass rod (1) is the one-tenth core glass pipe (6) of sealing two ends according to the preparation method of each described photon crystal optical fiber preformed rod of claim 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510024669 CN1291934C (en) | 2005-03-25 | 2005-03-25 | Prepn process of prefabricated rod for photon crystal fiber |
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|---|---|---|---|
| CN 200510024669 CN1291934C (en) | 2005-03-25 | 2005-03-25 | Prepn process of prefabricated rod for photon crystal fiber |
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| CN1673138A true CN1673138A (en) | 2005-09-28 |
| CN1291934C CN1291934C (en) | 2006-12-27 |
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| CN 200510024669 Expired - Fee Related CN1291934C (en) | 2005-03-25 | 2005-03-25 | Prepn process of prefabricated rod for photon crystal fiber |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102320733A (en) * | 2011-06-13 | 2012-01-18 | 南京春辉科技实业有限公司 | Photonic crystal fiber prefabricated bar and method for manufacturing photonic crystal fiber |
| CN102401933A (en) * | 2011-11-21 | 2012-04-04 | 武汉虹拓新技术有限责任公司 | Totally doped photonic crystal fiber and preparation method thereof |
| CN103880279A (en) * | 2014-02-26 | 2014-06-25 | 中国科学院上海光学精密机械研究所 | Method for preparing all solid-state band gap-type photonic crystal fiber of multi-component glass |
| CN103936276A (en) * | 2014-03-31 | 2014-07-23 | 陈抗抗 | Preparation method of micro-structure optical fibers |
| CN104505700A (en) * | 2014-12-16 | 2015-04-08 | 中国科学院上海光学精密机械研究所 | Method for generating intermediate infrared super-continuum spectrum |
| CN104536087A (en) * | 2015-02-03 | 2015-04-22 | 中国电子科技集团公司第四十六研究所 | Multiple-material mixing microstructure fiber and preparation method thereof |
| CN104730620A (en) * | 2015-02-06 | 2015-06-24 | 烽火通信科技股份有限公司 | Low-loss hollow band gap pohotonic crystal fiber |
| EP2792648A4 (en) * | 2011-12-16 | 2015-09-23 | Furukawa Electric Co Ltd | Method for manufacturing photonic band gap fiber |
| CN106995277A (en) * | 2017-01-20 | 2017-08-01 | 宁波大学 | A kind of preparation method of chalcogenide glass photon crystal optical fiber preformed rod |
| CN104730620B (en) * | 2015-02-06 | 2018-08-31 | 烽火通信科技股份有限公司 | A kind of hollow band gap photonic crystal fiber of low-loss |
| CN109298481A (en) * | 2018-10-09 | 2019-02-01 | 东北大学 | The metallic silver filling photonic crystal fiber and its preparation method of spontaneous generation SPR effect |
| US20190322566A1 (en) * | 2018-04-18 | 2019-10-24 | Lawrence Livermore National Security, Llc | Method for fabrication of sleeveless photonic crystal canes with an arbitrary shape |
| 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 |
| CN115180816A (en) * | 2022-08-17 | 2022-10-14 | 武汉安扬激光技术股份有限公司 | Method for preparing high numerical aperture air cladding optical fiber |
| CN115521059A (en) * | 2022-10-31 | 2022-12-27 | 长飞光纤光缆股份有限公司 | Hollow-core microstructure optical fiber preform, optical fiber and preparation method thereof |
| CN115677207A (en) * | 2022-05-25 | 2023-02-03 | 中国科学院上海光学精密机械研究所 | Multilayer variable-diameter solid photonic crystal fiber oriented to adjustable dispersion and preparation method thereof |
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2005
- 2005-03-25 CN CN 200510024669 patent/CN1291934C/en not_active Expired - Fee Related
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