CN108947233A - A kind of titanium-doped sapphire amorphous optical fiber and its preparation method and application - Google Patents

A kind of titanium-doped sapphire amorphous optical fiber and its preparation method and application Download PDF

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Publication number
CN108947233A
CN108947233A CN201810687229.5A CN201810687229A CN108947233A CN 108947233 A CN108947233 A CN 108947233A CN 201810687229 A CN201810687229 A CN 201810687229A CN 108947233 A CN108947233 A CN 108947233A
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optical fiber
titanium
sapphire
amorphous
doped sapphire
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CN108947233B (en
Inventor
周时凤
蓝碧蛟
于永泽
冯旭
杨中民
邱建荣
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South China University of Technology SCUT
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South China University of Technology SCUT
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    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03BMANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B37/00Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
    • C03B37/01Manufacture of glass fibres or filaments
    • C03B37/02Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor
    • C03B37/025Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor from reheated softened tubes, rods, fibres or filaments, e.g. drawing fibres from preforms
    • C03B37/027Fibres composed of different sorts of glass, e.g. glass optical fibres
    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03BMANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B37/00Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03CCHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C13/00Fibre or filament compositions
    • C03C13/04Fibre optics, e.g. core and clad fibre compositions
    • C03C13/045Silica-containing oxide glass compositions
    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03CCHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C13/00Fibre or filament compositions
    • C03C13/04Fibre optics, e.g. core and clad fibre compositions
    • C03C13/048Silica-free oxide glass compositions
    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03BMANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2203/00Fibre product details, e.g. structure, shape
    • C03B2203/10Internal structure or shape details
    • C03B2203/22Radial profile of refractive index, composition or softening point
    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03BMANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2203/00Fibre product details, e.g. structure, shape
    • C03B2203/32Eccentric core or cladding

Abstract

The invention discloses a kind of preparation methods of titanium-doped sapphire amorphous optical fiber, comprising the following steps: (1) ti sapphire crystal is processed into plug;(2) plug is obtained to step (1) to clean;(3) by the plug insertion cladding after cleaning, prefabricated rods are made;The material of the cladding is the glass material that melting temperature is higher than core material;(4) fibre-optical drawing: the prefabricated rods prepared are put into wire-drawer-tower, and heating makes the temperature of fiber drawing furnace rise above the melting temperature of ti sapphire crystal, keep the temperature 15~20min, drawing optical fiber, obtaining fibre core is amorphous titanium-doped sapphire amorphous optical fiber.The invention also discloses above-mentioned optical fiber and its applications.The preparation method simple process of titanium-doped sapphire amorphous optical fiber of the present invention, standby obtained titanium-doped sapphire amorphous optical fiber and ti sapphire crystal have similar luminescence feature.

Description

A kind of titanium-doped sapphire amorphous optical fiber and its preparation method and application
Technical field
The present invention relates to the preparation of optical fiber, in particular to a kind of titanium-doped sapphire amorphous optical fiber and preparation method thereof and answer With.
Background technique
Ti sapphire crystal is one of laser medium most important so far, it not only has good heat conductivity Energy, mechanical performance and higher saturation flux, it is often more important that the tunable wave length range that it is wider than 400nm is existing at present Any laser medium is incomparable.Using different pumping source and pump mode, people have successfully developed various Ti sapphire crystal laser, femtosecond laser are exactly an important utilization of sapphire laser.In addition, by frequency multiplication skill Art, optical parametric oscillation and amplifying technique, people are extended to the output wavelength range of sapphire laser from ultraviolet to red Outside.There are one important advantages to be that its structure is simple and the operation is stable for sapphire laser simultaneously, therefore, in recent ten years Ti sapphire crystal solid-state laser is widely studied and applied.
So far, the laser of nearly all ti sapphire crystal preparation is solid-state laser, it is difficult to which realization is mixed The miniaturization of titanium sapphire laser device, although now can be by the direct pulling monocrystal optical fiber of growth method, this preparation be single The comparable complexity of the technique of brilliant optical fiber.The miniaturization for how realizing ti sapphire crystal laser is urgently to be resolved at present Problem.If titanium-doped sapphire optical fiber can be prepared using more mature glass optical fiber drawing technology, for solving above-mentioned ask Topic and development of new optical fiber laser all have a very important significance.
Summary of the invention
In order to overcome the disadvantages mentioned above and deficiency of the prior art, the purpose of the present invention is to provide a kind of titanium-doped sapphire is non- The preparation method of brilliant optical fiber, preparation process is simple, and the titanium-doped sapphire amorphous optical fiber being prepared and ti sapphire crystal have There is similar luminescence feature.
Another object of the present invention is to provide the titanium-doped sapphire amorphous optical fiber that above-mentioned preparation method is prepared.
A further object of the present invention is to provide the applications of above-mentioned titanium-doped sapphire amorphous optical fiber.
The purpose of the present invention is achieved through the following technical solutions:
One kind mixing chrome red jewel amorphous optical fiber, and the chrome red jewel amorphous optical fiber of mixing is core-pack arrangement optical fiber, using crystalline state Chrome red jewel is mixed as core material, is prepared into fibre core through fibre core fusion method wire drawing and is mixed chrome red jewel amorphous light to be amorphous It is fine.
The clad material is high purity quartz pipe.
The application for mixing chrome red jewel amorphous optical fiber in optical fiber laser and optical fiber sensing.
A kind of preparation method for mixing chrome red jewel amorphous optical fiber, comprising the following steps:
(1) chrome red gem crystal will be mixed and is processed into plug;
The chrome red gem crystal chemistry of mixing contains by mass percentage:
Cr2O3: 0.01~4%;
Surplus is Al2O3;
(2) plug is obtained to step (1) to clean;
(3) by the plug insertion cladding after cleaning, prefabricated rods are made;The material of the cladding is that wire-drawing temperature is high In the glass material of core material melting temperature;
(4) fibre-optical drawing:
The prefabricated rods prepared are put into wire-drawer-tower, are heated up, the temperature of fiber drawing furnace is risen above and mixes chrome red jewel crystalline substance The melting temperature of body, keeps the temperature 15~20min, and drawing optical fiber obtains fibre core to be amorphous and mixes chrome red jewel amorphous optical fiber.
It is described plug is obtained to step (1) to clean, specifically:
It is cleaned up with ultrasonic cleaning, then with deionized water and absolute alcohol.
Step (4) described heating, specifically:
Fiber drawing furnace is set to be raised to wire-drawing temperature with 5~10 DEG C of heating rates per minute.
The temperature for making fiber drawing furnace rises above the melting temperature for mixing chrome red gem crystal, specifically:
The temperature of fiber drawing furnace is set to be raised to 2050~2200 DEG C.
Step (1) described processing, specifically: it is cold worked on machining tool.
Compared with prior art, the present invention has the following advantages and beneficial effects:
The present invention is by using the high purity quartz stick of high melt temperature as covering, and ti sapphire crystal is as fibre core material Material, successfully draws out amorphous sapphire fiber using fibre core fusion method, and realize in fiber core derived from Ti3+Width Band shines, and preparation process is simple, proves that the fiber core of preparation is in amorphous state by Raman Characterization, mainly organizing becomes Al2O3, testing the optical fiber that discovery is drawn by fluorescence spectrum characterization has similar luminescence feature with ti sapphire crystal.This This optical fiber of preparation is invented in development of new wideband adjustable optical fiber laser and realizes the miniaturization of broadband tunable laser device Etc. have a very important significance with potential application value, be ti sapphire crystal laser field application propose A kind of new approach.
Detailed description of the invention
Fig. 1 is the section microphoto of the titanium-doped sapphire amorphous optical fiber of the embodiment of the present invention.
Fig. 2 is the fluorescence spectra of the titanium-doped sapphire amorphous optical fiber of the embodiment of the present invention.
Specific embodiment
Below with reference to embodiment, the present invention is described in further detail, embodiments of the present invention are not limited thereto.
Embodiment 1
1. the selection of core material: selecting the sapphire crystal mixed with titanium as core material.
The component of ti sapphire crystal, by mass percentage, each component and content are as follows:
TiO2: 0.1%;
Surplus is Al2O3
2. choosing cladding:
Cladding uses F300 high purity quartz pipe.Internal diameter 3.1mm, outer diameter 25mm, length 200mm, surfaces externally and internally are thrown Light is in mirror surface.
3. prepared by prefabricated rods:
(1) ti sapphire crystal is cold worked into diameter 3mm on machining tool, is about the microlite stick of 50mm.
(2) the ti sapphire crystal plug and cladding that process are placed in the box for fill water and use ultrasonic cleaning About 10min, then cleaned 2~3 times with deionized water, finally cleaned up with absolute alcohol.
(3) plug is inserted into cladding, the taper quartz that cladding lower part is polished with the end face of 2.8~3.2mm of diameter Glass bar stoppers, and prevents plug from falling, and prefabricated rods are made.
4. fibre-optical drawing:
The prefabricated rods prepared are put into wire-drawer-tower, are slowly heated up, the temperature of fiber drawing furnace is made to rise above sapphire crystalline substance The melting temperature (about 2100 DEG C) of body keeps the temperature 15min.By adjusting the speed and prefabricated rods blanking velocity of wire drawing, draw out not With the optical fiber of size.
5. pair optical fiber prepared characterizes, Fig. 1 is fiber cross-sections figure manufactured in the present embodiment, can from figure To apparent core-pack arrangement.
Embodiment 2
1. the selection of core material: selecting the sapphire crystal mixed with titanium as core material.
The component of ti sapphire crystal, by mass percentage, each component and its content are as follows:
TiO2: 0.3%;
Surplus is Al2O3
2. choosing cladding:
Cladding uses F300 high purity quartz pipe.Internal diameter 3.6mm, outer diameter 25mm, length 200mm, surfaces externally and internally are thrown Light is in mirror surface.
3. prepared by prefabricated rods:
(1) ti sapphire crystal is cold worked into diameter 3.5mm on machining tool, is about the microlite stick of 50mm.
(2) the ti sapphire crystal plug and cladding that process are placed in the box for fill water and use ultrasonic cleaning About 10min, then cleaned 2~3 times with deionized water, finally cleaned up with absolute alcohol.
(3) plug is inserted into cladding, the taper quartz that cladding lower part is polished with the end face of 3.4~3.8mm of diameter Glass bar stoppers, and prevents plug from falling, and prefabricated rods are made.
4. fibre-optical drawing:
The prefabricated rods prepared are put into wire-drawer-tower, are slowly heated up, the temperature of fiber drawing furnace is made to rise above sapphire crystalline substance The melting temperature (about 2100 DEG C) of body keeps the temperature 20min.By adjusting the speed and prefabricated rods blanking velocity of wire drawing, draw out not With the optical fiber of size.
5. pair optical fiber prepared characterizes, Fig. 2 is the fluorescence spectrum of optical fiber manufactured in the present embodiment.From Fig. 2 It will be seen that the optical fiber and ti sapphire crystal of preparation have essentially identical fluorescence spectrum, under 532nm laser excitation There is broad-band illumination within the scope of 600~900nm, which is derived from Ti3+Energy level transition.It can be seen that the optical fiber exists Novel titanium-doped sapphire tunable laser etc. is prepared to have potential application.
The above embodiment is a preferred embodiment of the present invention, but embodiments of the present invention are not by the embodiment Limitation, other any changes, modifications, substitutions, combinations, simplifications made without departing from the spirit and principles of the present invention, It should be equivalent substitute mode, be included within the scope of the present invention.

Claims (8)

1. a kind of titanium-doped sapphire amorphous optical fiber, which is characterized in that the titanium-doped sapphire amorphous optical fiber is core-pack arrangement light Fibre selects crystalline state titanium-doped sapphire as core material, is prepared into fibre core by fibre core fusion method wire drawing and mixes titanium to be amorphous Sapphire fiber.
2. titanium-doped sapphire amorphous optical fiber according to claim 1, which is characterized in that the clad material is high purity quartz Pipe.
3. the answering in terms of tunable optical fiber laser and laser miniaturization of titanium-doped sapphire amorphous optical fiber described in claim 1 With.
4. a kind of preparation method of titanium-doped sapphire amorphous optical fiber, which comprises the following steps:
(1) ti sapphire crystal is processed into plug;
The chemistry of ti sapphire crystal contains by mass percentage:
TiO2: 0.01~3%;
Surplus is Al2O3
(2) plug is obtained to step (1) to clean;
(3) by the plug insertion cladding after cleaning, prefabricated rods are made;The material of the cladding is that wire-drawing temperature is higher than fibre The glass material of core material melting temperature;
(4) fibre-optical drawing:
The prefabricated rods prepared are put into wire-drawer-tower, heats up, the temperature of fiber drawing furnace is made to rise above ti sapphire crystal Melting temperature keeps the temperature 15~20min, and drawing optical fiber, obtaining fibre core is amorphous titanium-doped sapphire amorphous optical fiber.
5. the preparation method of titanium-doped sapphire amorphous optical fiber according to claim 4, which is characterized in that specifically:
It is cleaned up with ultrasonic cleaning, then with deionized water and absolute alcohol.
6. the preparation method of titanium-doped sapphire amorphous optical fiber according to claim 4, which is characterized in that step (4) is described Heating, specifically:
Fiber drawing furnace is set to be raised to wire-drawing temperature with 5~10 DEG C of heating rates per minute.
7. the preparation method of titanium-doped sapphire amorphous optical fiber according to claim 4, which is characterized in that described to make fiber drawing furnace Temperature rise above the melting temperature of ti sapphire crystal, specifically:
The temperature of fiber drawing furnace is set to be raised to about 2050~2200 DEG C.
8. the preparation method of titanium-doped sapphire amorphous optical fiber according to claim 4, which is characterized in that step (1) is described Processing, specifically: it is cold worked on machining tool.
CN201810687229.5A 2018-06-28 2018-06-28 Titanium-doped sapphire amorphous optical fiber and preparation method and application thereof Active CN108947233B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112729601A (en) * 2020-12-08 2021-04-30 北京信息科技大学 Sapphire F-P optical fiber temperature sensor prepared by femtosecond laser

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080047303A1 (en) * 2006-08-25 2008-02-28 National Sun Yat-Sen University Indirect heat type double-clad crystal fiber fabrication method
CN101710193A (en) * 2009-11-27 2010-05-19 电子科技大学 Method for manufacturing microstructure fiber
CN101799572A (en) * 2010-03-15 2010-08-11 阮双琛 Titanium gem photonic crystal fiber and preparation method thereof
CN102073099A (en) * 2009-11-25 2011-05-25 德拉克通信科技公司 High-Bandwidth Multimode Optical Fiber
CN104556671A (en) * 2015-01-19 2015-04-29 华南理工大学 Preparation method of transition metal ion doped microcrystalline glass fibers

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080047303A1 (en) * 2006-08-25 2008-02-28 National Sun Yat-Sen University Indirect heat type double-clad crystal fiber fabrication method
CN102073099A (en) * 2009-11-25 2011-05-25 德拉克通信科技公司 High-Bandwidth Multimode Optical Fiber
CN101710193A (en) * 2009-11-27 2010-05-19 电子科技大学 Method for manufacturing microstructure fiber
CN101799572A (en) * 2010-03-15 2010-08-11 阮双琛 Titanium gem photonic crystal fiber and preparation method thereof
CN104556671A (en) * 2015-01-19 2015-04-29 华南理工大学 Preparation method of transition metal ion doped microcrystalline glass fibers

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112729601A (en) * 2020-12-08 2021-04-30 北京信息科技大学 Sapphire F-P optical fiber temperature sensor prepared by femtosecond laser

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