CN104635295A - On-line optical fiber grating preparing system - Google Patents
On-line optical fiber grating preparing system Download PDFInfo
- Publication number
- CN104635295A CN104635295A CN201510114462.0A CN201510114462A CN104635295A CN 104635295 A CN104635295 A CN 104635295A CN 201510114462 A CN201510114462 A CN 201510114462A CN 104635295 A CN104635295 A CN 104635295A
- Authority
- CN
- China
- Prior art keywords
- grating
- optical fiber
- cocoons
- preparation system
- bare fibre
- 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
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/02—Optical fibres with cladding with or without a coating
- G02B6/02057—Optical fibres with cladding with or without a coating comprising gratings
- G02B6/02076—Refractive index modulation gratings, e.g. Bragg gratings
- G02B6/02123—Refractive index modulation gratings, e.g. Bragg gratings characterised by the method of manufacture of the grating
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/0005—Production of optical devices or components in so far as characterised by the lithographic processes or materials used therefor
Abstract
The invention relates to an on-line optical fiber grating preparing system, which comprises a wire drawing tower and a grating inscribing device, wherein the wire drawing tower comprises a wire drawing furnace and a prefabricated bar clamping feeding device arranged above the wire drawing furnace, a naked optical fiber diameter gauge is arranged under a furnace opening of the wire drawing furnace, the grating inscribing device is arranged under the naked optical fiber diameter gauge, an optical fiber coating curing device is arranged under the grating inscribing device along the vertical downward direction of the naked optical fiber, and a wire drawing take-up mechanism is arranged under the optical fiber coating curing device. The on-line optical fiber grating preparing system is characterized in that the grating inscribing device comprises a phase mask plate and a 193nm excimer laser, wherein the phase mask plate is arranged in a way of being next to the center of the naked optical fiber, the output end of the 193nm excimer laser is alternately provided with a diaphragm and a lens, the 193nm excimer laser outputs single-pulse laser beams, and the single-pulse laser beams are illuminated onto the phase mask plate through diaphragm shaping and lens focusing. The on-line optical fiber grating preparing system has the advantages that the arrangement is reasonable, the performance is stable, the manufacturing efficiency is high, in addition, the precision of the manufactured grating is high, the grating spectral form is good, and the consistency is high.
Description
Technical field
The present invention relates to a kind of preparation system of online fiber grating, belong to fiber grating preparing technical field.
Background technology
Fiber grating is one of fiber optic passive device that current most is representative, most is rising, have that insertion loss is little, extinction ratio advantages of higher, in fiber laser, fiber amplifier, optical fiber filter, Fibre Optical Sensor and optical fiber telecommunications system etc., have extensive use.At sensory field of optic fibre, the advantage of fiber grating is especially outstanding, multiplexingly on a large scale can form long distance multi-parameter optical fiber optical grating sensing network.
The fiber grating serial connection of large quantity becomes array, is the basis forming large-scale optical fiber grating sensing network.The method preparing optical fiber optical grating array is traditionally; first by the finished product optical fiber section of being cut into; the organic protection layer of optical fiber surface is divested; laser explosure is adopted to prepare grating; second coat is carried out to grating; adopt the method for welding by often a bit of optical fiber again, namely each independent grating is connected in series.Owing to being singlely prepare grating, preparation efficiency is low, and the quality of grating is unstable.The organic protection layer on peeling optical fibre surface can damage the tensile strength of optical fiber greatly, and optical fiber weld also easily occurs disconnected fine situation, causes the less reliable of fibre system.In addition, optical fiber welding causes insertion loss significantly to increase, and cannot accomplish the multiplexing and comparatively low-loss of large quantity.
On fiber drawing tower, in the process of drawing optical fiber, prepare fiber grating and the method forming array can overcome the above problems.In fiber draw process, laser explosure is carried out to bare fibre, realize writing grating online, then optical fiber and grating are applied, effectively can avoid divesting organic protection layer and fiber strength is caused damage.At optical fiber moving process, optical fiber multiexposure, multiple exposure write to multiple grating and forms array, welding process can be removed from, avoid welding optical fiber and increase insertion loss.
But the system of existing dynamic living broadcast fiber grating also also exists some problems: one, adopting light path-splitting interferometric method to prepare grating, is that the angle by rotating two pieces of catoptrons changes the Bragg wavelength writing grating.Because Bragg wavelength is very responsive to the angle of catoptron, when wavelength accuracy controls within 1nm, need the opertaing device that performance is high, thus control difficulty large, cause the consistance of grating poor; Its two, inscribe the light path adopted longer, need through multiple reflections, turnover, therefore require good vibration-isolating platform and stable working environment, but in actual mechanical process, influence factor is a lot, and this consistance that also can affect grating is poor; 3rd, inscribing light source is 248nm laser, and stability and the coherence of the homogeneity of laser beam, the stability of laser pulse, laser-beam acquiring point are lower, and prepared grating is composed, and shape is poor, consistance is poor, causes the of low quality of grating array.
Summary of the invention
Problem to be solved by this invention is that the deficiency existed for above-mentioned prior art provides a kind of preparation system of dynamically online fiber grating, it not only arranges rationally, stable performance, make efficiency is high, and the grating precision made is high, grating spectrum shape is good, consistance is high.
The technical scheme that the problem that the present invention is the above-mentioned proposition of solution adopts is:
Comprise wire-drawer-tower and grating Written Device, described wire-drawer-tower comprises fiber drawing furnace and is installed in the prefabricated rods hitch feed device above fiber drawing furnace, bare fibre caliper is installed below fiber drawing furnace plug for outlet, inscription mounting for grating is installed in the below of bare fibre caliper, along the below that vertical down direction is inscribing mounting for grating of bare fibre, optical fiber coating solidification equipment is set, the below of optical fiber coating solidification equipment arranges the take-up mechanism that reels off raw silk from cocoons, it is characterized in that described inscription mounting for grating comprises phase mask plate and 193nm excimer laser, phase mask plate is arranged near bare fibre center, diaphragm and lens are installed in 193nm excimer laser output terminal interval, 193nm excimer laser exports single-pulse laser bundle, by diaphragm shaping, again through lens focus, be irradiated on phase mask plate.
By such scheme, described diaphragm and lens are arranged along laser beam rectilinear direction, and single-pulse laser bundle keeps linear transmission and perpendicular to bare fibre, laser beam passes through mask plate irradiation on bare fibre.
By such scheme, the pulsewidth of the single-pulse laser bundle of the excimer laser output of described 193nm is less than or equal to 4ns; Excimer laser and the computing machine of 193nm are connected.
By such scheme, described phase mask plate and bare fibre center distance are less than or equal to 0.5mm.
By such scheme, below optical fiber coating solidification equipment, install optical fiber calliper gauge.
By such scheme, the described take-up mechanism that reels off raw silk from cocoons comprises tensile measurer and is installed in the wheel that reels off raw silk from cocoons of its side, and the opposite side of the wheel that reels off raw silk from cocoons arranges reel off raw silk from cocoons take-up speed coalignment and take-up reel.
By such scheme, reeling off raw silk from cocoons wheel and reel off raw silk from cocoons between take-up speed coalignment and be provided with stop position labelling apparatus.
By such scheme, described optical fiber coating solidification equipment is secondary coating solidification equipment, and the vertical down direction order comprised along bare fibre arranges one-level applicator and Primary UV curing oven, secondary applicator and secondary uv oven.
By such scheme, the drawing speed of the described wheel that reels off raw silk from cocoons is 2 ~ 30m/min, is generally 15m/min.
Beneficial effect of the present invention is: 1, arrange rationally, dynamic on-line continuous prepares optical fiber optical grating array, and make efficiency is high; 2, phase-mask method is adopted, for the optical fiber of specifying and specific phase mask plate, the effective refractive index of optical fiber and the cycle of mask plate are fixing, the wavelength of made fiber grating is a stationary value, the object accurately controlling grating Bragg wavelength can be reached, particularly can prepare multiple identical grating at an optical fiber, thus high-quality light grid array can be prepared; 3,193nm excimer laser coherence, homogeneity and good stability, peak power is high, pulse width, and preparing grating efficiency is high, and the raster center of inscription is Wavelength stabilized, and grating spectrum shape reflectivity consistance that is good, grating is high; 4, the single-pulse laser bundle of laser instrument output is through shaping iris, condenser lens, phase mask plate, irradiation to bare fibre writes grating, light path is straight line and perpendicular to bare fibre, do not adopt catoptron to change light path trend, improve the stability of light path, thus improve the consistance of grating array.The invention solves poor, the inefficient problem of the poor stability of living broadcast grating on wire-drawer-tower, poor reliability and grating quality.
Accompanying drawing explanation
Fig. 1 is for wire-drawer-tower system schematic of the present invention.
Fig. 2 is the enlarged diagram inscribing mounting for grating and light path part thereof in Fig. 1.
Embodiment
Embodiments of the invention are further illustrated below in conjunction with accompanying drawing.
Be made up of wire-drawer-tower and inscription mounting for grating, the prefabricated rods hitch feed device 1 comprising fiber drawing furnace 2 and be installed in above fiber drawing furnace, bare fibre caliper 3 is installed below fiber drawing furnace plug for outlet, install in the below of bare fibre caliper and inscribe mounting for grating 5, the below order that vertical down direction is inscribing mounting for grating along bare fibre 4 arranges one-level applicator 6 and Primary UV curing oven 7, secondary applicator 8 and secondary uv oven 9, optical fiber calliper gauge 10 is installed in order to detect the external diameter of coated fiber 11 below secondary uv oven, then coated fiber to be reeled off raw silk from cocoons wheel 13 by tensile measurer 12 switching, take-up reel 16 is collapsed to through stop position labelling apparatus 14 and the take-up speed coalignment 15 that reels off raw silk from cocoons.The drawing speed of taking turns that reels off raw silk from cocoons is 2 ~ 30m/min.Described inscription mounting for grating comprises phase mask plate 17 and 193nm excimer laser 21, and phase mask plate is arranged near bare fibre center, is 0.3mm with bare fibre center distance.Diaphragm 19 and lens 18 are installed in 193nm excimer laser output terminal interval, 193nm excimer laser exports single-pulse laser bundle, by diaphragm shaping, then through lens focus, be irradiated on phase mask plate, excimer laser light path (bundle) 20 keeps linear transmission perpendicular to bare fibre 4.The pulsewidth of the single-pulse laser bundle of the excimer laser output of 193nm is less than or equal to 4ns.Excimer laser and the computing machine 22 of 193nm are connected, and inscribe grating process and control by computing machine.
The method that the present invention prepares fiber grating is as follows: be clamped on fiber drawing tower by quartz glass matrix preform and carry out melt drawing processing, the bare fibre of melting fibroblast continues to downward-extension, advanced line raster is inscribed, then applied by extexine and dry, finally close at take-up reel, described grating is inscribed and is adopted the excimer laser of phase-mask method configuration 193nm to carry out monopulse exposure write grating to bare fibre.Exposure is that on-line continuous is carried out with coating take-up.Described excimer laser light path (bundle) 20 keeps linear transmission and perpendicular to bare fibre 4, the pulsewidth of the excimer laser of described 193nm is less than or equal to 4ns.
Preform is placed in fiber drawing furnace 2, and its lower end melting post-tensioning bores into silk, monitors bare-fiber diameter and the speed of real-time feedback control prefabricated rods pay-off 1 and bare fibre 4, realize the stability contorting of bare-fiber diameter by bare fibre caliper 3.Wire Drawing speed is 15m/min.The inscription mounting for grating 5 be made up of phase mask plate and 193nm laser instrument writes grating on the bare fibre moved down, a light pulse writes a grating, the bare fibre being written with grating enters first time coating 6 and first time solidification 7 subsequently, then carries out second time coating 8 and second time solidification 9.After coating, optical fiber monitors coated fiber 11 diameter by coated fiber caliper 10, controls the thickness of coat.Tensile measurer 12 monitors tension force suffered by optical fiber, and the common positioning optical waveguides with prefabricated rods pay-off 1, makes optical fiber keep vertical state simultaneously.The wheel 13 that reels off raw silk from cocoons controls drawing speed.Coated fiber 11, under the wheel 13 that reels off raw silk from cocoons acts on, after stop position labelling apparatus 14 puts on mark, is collected on take-up reel 16 by after the take-up speed coalignment 15 that reels off raw silk from cocoons.
The present invention adopts 193nm laser in conjunction with phase-mask method, in low loss fiber drawing process, to bare fibre monopulse exposure prepare antiradar reflectivity grating, continuous exposure, on wire-drawer-tower living broadcast one to 100,000 high-quality antiradar reflectivity fiber grating and form array.In drawing process, on line real-time monitoring is carried out to the equipment such as pay-off, fiber drawing furnace, applicator, uv oven, gas flow and pressure, fiber tension, drawing speed and state, by two calipers, the diameter of optical fiber after bare-fiber diameter and coating is measured, realize the regulation and control to whole system, ensure whole system stable operation.In addition, under controlled temperature and humidity condition, write grating online, make the optical fiber background temperature of grating writing point have good consistance.By controlling other measures of more than bare fibre translational speed, stably controlling bare-fiber diameter, fiber tension, ensureing that optical fiber internal stress is stablized, thus ensure that the grating of online write has consistance.Inscription grating process is subject to computing machine 22 and controls, and the spacing between grating and laser beam intensity all can be arranged on request.
Claims (10)
1. an online fiber grating preparation system, comprise wire-drawer-tower and grating Written Device, described wire-drawer-tower comprises fiber drawing furnace and is installed in the prefabricated rods hitch feed device above fiber drawing furnace, bare fibre caliper is installed below fiber drawing furnace plug for outlet, inscription mounting for grating is installed in the below of bare fibre caliper, along the below that vertical down direction is inscribing mounting for grating of bare fibre, optical fiber coating solidification equipment is set, the below of optical fiber coating solidification equipment arranges the take-up mechanism that reels off raw silk from cocoons, it is characterized in that described inscription mounting for grating comprises phase mask plate and 193nm excimer laser, phase mask plate is arranged near bare fibre center, diaphragm and lens are installed in 193nm excimer laser output terminal interval, 193nm excimer laser exports single-pulse laser bundle, by diaphragm shaping, again through lens focus, be irradiated on phase mask plate.
2. online fiber grating preparation system according to claim 1, it is characterized in that described diaphragm and lens are arranged along laser beam rectilinear direction, single-pulse laser bundle keeps linear transmission and perpendicular to bare fibre, laser beam passes through mask plate irradiation on bare fibre.
3. online fiber grating preparation system according to claim 1 and 2, is characterized in that the pulsewidth of the single-pulse laser bundle that the excimer laser of described 193nm exports is less than or equal to 4ns.
4. online fiber grating preparation system according to claim 1 and 2, is characterized in that the excimer laser of 193nm and computing machine are connected.
5. online fiber grating preparation system according to claim 1 and 2, is characterized in that described phase mask plate and bare fibre spacing are less than or equal to 0.5mm.
6. online fiber grating preparation system according to claim 1 and 2, is characterized in that installing optical fiber calliper gauge below optical fiber coating solidification equipment.
7. online fiber grating preparation system according to claim 1 and 2, it is characterized in that the described take-up mechanism that reels off raw silk from cocoons comprises tensile measurer and is installed in the wheel that reels off raw silk from cocoons of its side, the opposite side of the wheel that reels off raw silk from cocoons arranges reel off raw silk from cocoons take-up speed coalignment and take-up reel.
8. online fiber grating preparation system according to claim 7, is characterized in that reeling off raw silk from cocoons wheel and reel off raw silk from cocoons between take-up speed coalignment and be provided with stop position labelling apparatus.
9. online fiber grating preparation system according to claim 1 and 2, it is characterized in that described optical fiber coating solidification equipment is secondary coating solidification equipment, the vertical down direction order comprised along bare fibre arranges one-level applicator and Primary UV curing oven, secondary applicator and secondary uv oven.
10. online fiber grating preparation system according to claim 7, is characterized in that the drawing speed of the described wheel that reels off raw silk from cocoons is 2 ~ 30m/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510114462.0A CN104635295B (en) | 2015-03-17 | 2015-03-17 | A kind of online fiber grating preparation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510114462.0A CN104635295B (en) | 2015-03-17 | 2015-03-17 | A kind of online fiber grating preparation system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104635295A true CN104635295A (en) | 2015-05-20 |
| CN104635295B CN104635295B (en) | 2018-01-09 |
Family
ID=53214242
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510114462.0A Active CN104635295B (en) | 2015-03-17 | 2015-03-17 | A kind of online fiber grating preparation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104635295B (en) |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105259610A (en) * | 2015-11-20 | 2016-01-20 | 武汉理工大学 | Device and method for multi-wavelength switching in order in fiber bragg grating array on-line preparation |
| CN105891945A (en) * | 2016-06-24 | 2016-08-24 | 西安盛佳光电有限公司 | Continuous production method of fiber bragg grating (FBG) |
| CN106525094A (en) * | 2016-10-28 | 2017-03-22 | 武汉理工大学 | Method and system for online preparation of large-capacity intrinsic type F-P sensor array |
| CN106680930A (en) * | 2017-01-06 | 2017-05-17 | 扬州大学 | Gaussian sampling optical fiber grating for picoseconds delay line and preparation method |
| CN106772782A (en) * | 2017-01-19 | 2017-05-31 | 华中科技大学 | A kind of continuous Written Device of multifunctional optical fiber micro-structural and method |
| CN106772739A (en) * | 2017-03-03 | 2017-05-31 | 武汉理工大学 | A kind of dim light grid array preparation method and control system |
| CN107421656A (en) * | 2017-06-16 | 2017-12-01 | 武汉理工大学 | One kind exempts from stress twin-core and with temperature sensing optical fiber preparation facilities and method |
| WO2018060702A1 (en) * | 2016-09-30 | 2018-04-05 | Fibercore Limited | Coated fiber manufacture |
| CN107991734A (en) * | 2018-01-03 | 2018-05-04 | 武汉理工大学 | The online stop position labelling apparatus and method for preparing optical fiber optical grating array |
| CN108957209A (en) * | 2018-08-01 | 2018-12-07 | 四川特旺通信科技有限公司 | A kind of broken string automatic detection device of telecommunication optical fiber optical cable production |
| CN109238355A (en) * | 2018-08-30 | 2019-01-18 | 武汉理工大学 | The device and method of optical fiber distributed type sound state property while sensing measurement |
| CN109883461A (en) * | 2019-03-15 | 2019-06-14 | 哈尔滨工程大学 | A kind of producing device and method of multilayer fibers strain disk |
| CN110556044A (en) * | 2019-09-20 | 2019-12-10 | 惠州学院 | Comprehensive spectrum demonstration instrument |
| CN111208602A (en) * | 2020-01-21 | 2020-05-29 | 武汉理工大学 | Device and method for preparing weak grating array with continuous wavelength change on line |
| WO2022061558A1 (en) * | 2020-09-23 | 2022-03-31 | 江苏亨通光纤科技有限公司 | Method and device for manufacturing long-period fiber grating |
| CN114415287A (en) * | 2022-01-24 | 2022-04-29 | 武汉理工大学 | Hydrogen-resistant carbon-coated fiber grating string and preparation method and preparation device thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020031302A1 (en) * | 2000-08-04 | 2002-03-14 | Kim Se-Yoon | Device for fabricating polarization insensitive long period fiber grating |
| CN1529192A (en) * | 2003-10-21 | 2004-09-15 | 中国科学院上海光学精密机械研究所 | Method for manufacturing low double-refraction optical-fiber grating |
| JP2005196089A (en) * | 2004-01-09 | 2005-07-21 | Furukawa Electric Co Ltd:The | Fiber bragg grating element |
| CN102590929A (en) * | 2012-02-17 | 2012-07-18 | 武汉理工大学 | Method for continuously preparing fiber gratings on line |
-
2015
- 2015-03-17 CN CN201510114462.0A patent/CN104635295B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020031302A1 (en) * | 2000-08-04 | 2002-03-14 | Kim Se-Yoon | Device for fabricating polarization insensitive long period fiber grating |
| CN1529192A (en) * | 2003-10-21 | 2004-09-15 | 中国科学院上海光学精密机械研究所 | Method for manufacturing low double-refraction optical-fiber grating |
| JP2005196089A (en) * | 2004-01-09 | 2005-07-21 | Furukawa Electric Co Ltd:The | Fiber bragg grating element |
| CN102590929A (en) * | 2012-02-17 | 2012-07-18 | 武汉理工大学 | Method for continuously preparing fiber gratings on line |
Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105259610B (en) * | 2015-11-20 | 2018-11-30 | 武汉烽理光电技术有限公司 | A kind of optical fiber optical grating array prepares the orderly switching device of multi-wavelength and method online |
| CN105259610A (en) * | 2015-11-20 | 2016-01-20 | 武汉理工大学 | Device and method for multi-wavelength switching in order in fiber bragg grating array on-line preparation |
| CN105891945A (en) * | 2016-06-24 | 2016-08-24 | 西安盛佳光电有限公司 | Continuous production method of fiber bragg grating (FBG) |
| WO2018060702A1 (en) * | 2016-09-30 | 2018-04-05 | Fibercore Limited | Coated fiber manufacture |
| GB2554658A (en) * | 2016-09-30 | 2018-04-11 | Fibercore Ltd | Coated fiber manufacture |
| CN106525094A (en) * | 2016-10-28 | 2017-03-22 | 武汉理工大学 | Method and system for online preparation of large-capacity intrinsic type F-P sensor array |
| CN106680930A (en) * | 2017-01-06 | 2017-05-17 | 扬州大学 | Gaussian sampling optical fiber grating for picoseconds delay line and preparation method |
| CN106772782A (en) * | 2017-01-19 | 2017-05-31 | 华中科技大学 | A kind of continuous Written Device of multifunctional optical fiber micro-structural and method |
| CN106772782B (en) * | 2017-01-19 | 2017-10-31 | 华中科技大学 | A kind of continuous Written Device of multifunctional optical fiber micro-structural and method |
| CN106772739A (en) * | 2017-03-03 | 2017-05-31 | 武汉理工大学 | A kind of dim light grid array preparation method and control system |
| CN107421656A (en) * | 2017-06-16 | 2017-12-01 | 武汉理工大学 | One kind exempts from stress twin-core and with temperature sensing optical fiber preparation facilities and method |
| CN107991734A (en) * | 2018-01-03 | 2018-05-04 | 武汉理工大学 | The online stop position labelling apparatus and method for preparing optical fiber optical grating array |
| CN107991734B (en) * | 2018-01-03 | 2019-09-10 | 武汉理工大学 | The stop position labelling apparatus and method of optical fiber optical grating array are prepared online |
| CN108957209A (en) * | 2018-08-01 | 2018-12-07 | 四川特旺通信科技有限公司 | A kind of broken string automatic detection device of telecommunication optical fiber optical cable production |
| CN108957209B (en) * | 2018-08-01 | 2020-11-24 | 四川特旺通信科技有限公司 | Automatic broken line detection device for communication optical fiber cable production |
| CN109238355A (en) * | 2018-08-30 | 2019-01-18 | 武汉理工大学 | The device and method of optical fiber distributed type sound state property while sensing measurement |
| CN109238355B (en) * | 2018-08-30 | 2020-08-25 | 武汉理工大学 | Device and method for simultaneously sensing and measuring distributed dynamic and static parameters of optical fiber |
| CN109883461A (en) * | 2019-03-15 | 2019-06-14 | 哈尔滨工程大学 | A kind of producing device and method of multilayer fibers strain disk |
| CN110556044A (en) * | 2019-09-20 | 2019-12-10 | 惠州学院 | Comprehensive spectrum demonstration instrument |
| CN111208602A (en) * | 2020-01-21 | 2020-05-29 | 武汉理工大学 | Device and method for preparing weak grating array with continuous wavelength change on line |
| CN111208602B (en) * | 2020-01-21 | 2021-03-23 | 武汉理工大学 | Device and method for preparing weak grating array with continuous wavelength change on line |
| WO2022061558A1 (en) * | 2020-09-23 | 2022-03-31 | 江苏亨通光纤科技有限公司 | Method and device for manufacturing long-period fiber grating |
| CN114415287A (en) * | 2022-01-24 | 2022-04-29 | 武汉理工大学 | Hydrogen-resistant carbon-coated fiber grating string and preparation method and preparation device thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104635295B (en) | 2018-01-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104635295A (en) | On-line optical fiber grating preparing system | |
| CN104678486B (en) | A kind of preparation method of fiber grating | |
| CN102519499B (en) | Based on the quasi-distributed sensor of micro-structure fiber optic Fabry-Perot cavity quasi | |
| CN101840018B (en) | Method for manufacturing multi-core long-period fiber gratings and fiber rotation positioning device | |
| Guo et al. | On-line writing identical and weak fiber Bragg grating arrays | |
| CN102590929A (en) | Method for continuously preparing fiber gratings on line | |
| CN103900620B (en) | A kind of device and method of continuous manufacture Fibre Optical Sensor | |
| CN113534331B (en) | Device and method for preparing Bragg fiber grating by femtosecond laser | |
| CN111552022B (en) | Grating inscription technology suitable for optical fiber core in any shape and distribution | |
| CN208172292U (en) | Long-period fiber grating preparation facilities | |
| CN106772782B (en) | A kind of continuous Written Device of multifunctional optical fiber micro-structural and method | |
| CN201654269U (en) | Making device of arbitrary chirp optical fiber grating | |
| CN103543490B (en) | A kind of LPFG preparation method based on inkjet technology | |
| CN203275699U (en) | Bandwidth-controllable fiber grating inscription device | |
| CN101825740A (en) | Rotary writing method of multi-core fiber grating | |
| US6547920B2 (en) | Chemical stripping apparatus and method | |
| CN107045158A (en) | A kind of optical fiber, its preparation method and its optical fiber optical grating array | |
| CN113655562A (en) | Automatic feeding device for femtosecond laser writing fiber bragg grating and writing processing steps | |
| CN105891945A (en) | Continuous production method of fiber bragg grating (FBG) | |
| CN111552023B (en) | System and method for preparing special-shaped core fiber grating based on semi-circle phase compensation plate | |
| CN208705516U (en) | One kind having feedback control optical fiber Written Device | |
| CN208937742U (en) | A kind of prestress control fiber grating Written Device | |
| CN107855644A (en) | A kind of laser processing device and system | |
| CN103048728B (en) | Device and method for simultaneously inscribing by multi-wavelength grating in multi-core banding optical fiber | |
| CN113625388B (en) | Novel capillary fiber bragg grating and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20170801 Address after: 430079 Hubei science and Technology Park, East Lake Development Zone, Wuhan, China Applicant after: Wuhan Feng Li Photoelectric Technology Co Ltd Address before: 430070 Hubei Province, Wuhan city Hongshan District Luoshi Road No. 122 Applicant before: Wuhan University of Technology |
|
| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |