CN110456447B - Waterproof and fireproof optical fiber, preparation method thereof and lighting system adopting optical fiber - Google Patents
Waterproof and fireproof optical fiber, preparation method thereof and lighting system adopting optical fiber Download PDFInfo
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- CN110456447B CN110456447B CN201910761035.XA CN201910761035A CN110456447B CN 110456447 B CN110456447 B CN 110456447B CN 201910761035 A CN201910761035 A CN 201910761035A CN 110456447 B CN110456447 B CN 110456447B
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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
- C03B37/014—Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD]
- C03B37/018—Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD] by glass deposition on a glass substrate, e.g. by inside-, modified-, plasma-, or plasma modified- chemical vapour deposition [ICVD, MCVD, PCVD, PMCVD], i.e. by thin layer coating on the inside or outside of a glass tube or on a glass rod
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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
- C03B37/02—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor
- C03B37/022—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor from molten glass in which the resultant product consists of different sorts of glass or is characterised by shape, e.g. hollow fibres, undulated fibres, fibres presenting a rough surface
- C03B37/023—Fibres composed of different sorts of glass, e.g. glass optical fibres, made by the double crucible technique
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL 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
- C03C13/00—Fibre or filament compositions
- C03C13/04—Fibre optics, e.g. core and clad fibre compositions
- C03C13/045—Silica-containing oxide glass compositions
- C03C13/046—Multicomponent glass compositions
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL 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
- C03C25/00—Surface treatment of fibres or filaments made from glass, minerals or slags
- C03C25/10—Coating
- C03C25/104—Coating to obtain optical fibres
- C03C25/1065—Multiple coatings
- C03C25/109—Multiple coatings with at least one organic coating and at least one inorganic coating
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL 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
- C03C25/00—Surface treatment of fibres or filaments made from glass, minerals or slags
- C03C25/10—Coating
- C03C25/24—Coatings containing organic materials
- C03C25/26—Macromolecular compounds or prepolymers
- C03C25/32—Macromolecular compounds or prepolymers obtained otherwise than by reactions involving only carbon-to-carbon unsaturated bonds
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL 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
- C03C25/00—Surface treatment of fibres or filaments made from glass, minerals or slags
- C03C25/10—Coating
- C03C25/42—Coatings containing inorganic materials
- C03C25/44—Carbon, e.g. graphite
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL 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
- C03C25/00—Surface treatment of fibres or filaments made from glass, minerals or slags
- C03C25/10—Coating
- C03C25/48—Coating with two or more coatings having different compositions
- C03C25/54—Combinations of one or more coatings containing organic materials only with one or more coatings containing inorganic materials only
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
- F21V13/02—Combinations of only two kinds of elements
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- 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
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- 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
- G02B6/036—Optical fibres with cladding with or without a coating core or cladding comprising multiple layers
- G02B6/03694—Multiple layers differing in properties other than the refractive index, e.g. attenuation, diffusion, stress properties
Abstract
The invention discloses a waterproof and fireproof optical fiber, a preparation method thereof and a lighting system adopting the optical fiber.A lanthanum element is doped in an optical fiber core material, so that the high-temperature expansion resistance of the whole material is enhanced, and then a graphene layer subjected to hydrophobic modification is coated on the surface of the optical fiber, so that the waterproof performance of the optical fiber is improved, the optical fiber can be used under extreme conditions, the application range of the optical fiber is widened, the preparation process is simple and convenient, and the optical fiber is easy to control and is convenient for large-scale sound field; when the illumination system is used, monochromatic light is emitted by the light source and is transmitted and then is mixed at the terminal to form light required by illumination, the loss in the transmission process of the mixed light is greatly reduced by monochromatic light transmission, the power of the light source is reduced, the energy consumption is reduced, the light transmission distance is increased, the long-distance transmission is realized, and the illumination system has higher application value.
Description
Technical Field
The invention relates to the technical field of experiment and detection devices and detection, in particular to an experiment device for rapidly verifying the decomposition performance of a purification material and a using method thereof.
Background
With the rapid development of industrialization, the safety production of various industries is also rapidly improved, and the huge loss caused by hidden troubles brought in the production process is that people pay more and more attention to the production safety of high-risk industries, especially in the dangerous occasions of strictly banning fire species in oil depots, mining areas and the like, the electricity safety in the working occasions becomes a problem of great concern, for example, lighting systems in the prior art all adopt electric conduction to terminal lighting, and great loss which cannot be recovered can be caused by carelessness, so the research on the lighting safety is brought forward.
Aiming at the problems, the optical fiber lighting technology appears on the market at present, the optical fiber lighting is a special light conduction mode, the light source emitter is arranged at a place far away from a dangerous area and is transmitted to a terminal for lighting through the refraction and other effects of light in the optical fiber, the photoelectric separation is completely achieved, and the light emitting process does not generate heat, so that the light emitting device can be safely applied to places with high humidity and high temperature, and the production safety performance is improved.
However, most of optical fiber illumination in the prior art adopts direct transmission of white light, the loss of white light as mixed color light in the transmission process is large, the transmission distance of optical fiber illumination is short, more production requirements cannot be met, the transmission mode must increase the power of a light source to meet the requirements of terminal illumination, energy consumption is increased virtually, and practical production is not facilitated.
Disclosure of Invention
In view of the above, the present invention provides a modified optical fiber and an illumination system prepared by using the modified optical fiber, which is waterproof and fireproof and can transmit light over a long distance.
In order to achieve the purpose, the invention adopts the following technical scheme:
a waterproof and fireproof optical fiber comprising, in order from the center to the surface: the fiber comprises a modified fiber core, a cladding, a coating layer and a hydrophobic layer, wherein the diameter of the cladding is 130-160 mu m, and the thickness of the coating layer is 0.25-0.4 mm.
Furthermore, the modified fiber core is a Ge and Si composite material fiber core modified by lanthanum, and the cladding (2) is a quartz layer.
Further, the hydrophobic layer (4) is a hydrophobic modified graphene material.
The invention also provides a preparation method of the waterproof and fireproof optical fiber, which comprises the following steps:
the method comprises the following steps: modification of graphene
Dispersing graphene oxide into distilled water, carrying out ultrasonic treatment for 2-3h, adding 80 wt% hydrazine hydrate, heating to 93-97 ℃, stirring for 10-15min, carrying out condensation reflux for 22-24h, adding a dilute hydrochloric acid solution, filtering, washing to neutrality, drying at 50-60 ℃, uniformly mixing a dried product and a hydrophobic agent, placing the mixture in a muffle furnace, and carrying out heat preservation for 1-1.5h at 230-240 ℃ to obtain modified graphene;
step two: preparation of base optical fiber
2.1) weighing GeCl4, SiCl4 and LaCl3 respectively according to the molar ratio of 1:5:1, and heating until the three are in a gaseous mixture;
2.2) preparing the gaseous mixture obtained in the step 2.1) into a prefabricated rod by adopting an MCVD method;
2.3) placing the prefabricated rod in the step 2.2) in an optical fiber drawing tower for drawing, and quickly coating two layers of resin on the surface after drawing to obtain a basic optical fiber;
step three: surface modification of base optical fiber
And dispersing the modified graphene prepared in the step one into distilled water to prepare a modified graphene solution, soaking the base optical fiber prepared in the step two in the modified graphene solution for 1-3h, taking out, and drying at 80-100 ℃ to obtain the waterproof and fireproof optical fiber.
Preferably, the mass ratio of hydrazine hydrate to graphene oxide in the first step is 1.6: 100.
Preferably, the hydrophobic agent in the first step is polydimethylsiloxane.
Preferably, the concentration of the modified graphene solution in the third step is 0.7 wt% to 1.0 wt%.
The invention also provides a lighting system prepared by the waterproof and fireproof optical fiber prepared by the method, which comprises the following components in sequential connection: the system comprises a light source, a coupling device, a first optical fiber, a light gathering device, a second optical fiber and a terminal;
the light source is a monochromatic light source; the input end of the coupling device is provided with a first focusing lens, and the light source is connected with the input end of the coupling device; the output end of the coupling device is connected with the input end of the first optical fiber, and the light source, the first focusing lens and the first optical fiber correspond to each other one by one; the output end of the first optical fiber is connected with the input end of the light gathering device, a light gathering prism and a second focusing lens are sequentially arranged in the light gathering device from the input end in the light propagation direction, the output end of the light gathering device is connected with the input end of the second optical fiber, and the output end of the second optical fiber is connected with the terminal.
Further, the condensing prism is a depolarizing condensing prism.
Further, the terminal is a lighting device.
According to the technical scheme, compared with the prior art, the waterproof and fireproof optical fiber disclosed by the invention has the advantages that the lanthanum element is doped in the optical fiber core material, the overall high-temperature expansion resistance of the material is enhanced, and then the hydrophobic modified graphene layer is coated on the surface of the optical fiber, so that the waterproof performance of the optical fiber is improved, the optical fiber can be used under extreme conditions, the application range of the optical fiber is widened, the preparation process is simple and convenient, and the control is easy, and the large-scale production is facilitated; when the illumination system is used, monochromatic light is emitted by the light source and is transmitted and then is mixed at the terminal to form light required by illumination, the loss in the transmission process of the mixed light is greatly reduced by monochromatic light transmission, the power of the light source is reduced, the energy consumption is reduced, the light transmission distance is increased, the long-distance transmission is realized, and the illumination system has higher application value.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic diagram of a waterproof and fireproof optical fiber according to the present invention;
FIG. 2 is a schematic diagram of a waterproof and fireproof optical fiber lighting system according to the present invention;
in the figure: 1. the optical fiber comprises a modified fiber core, 2, a cladding, 3, a coating layer, 4, a hydrophobic layer, 5, a light source, 6, a coupling device, 61, a first focusing lens, 7, a first optical fiber, 8, a light gathering device, 81, a light gathering prism, 82, a second focusing lens, 9, a second optical fiber, 10 and a terminal.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
As shown in fig. 1, a waterproof and fireproof optical fiber comprises, from the center to the surface: the fiber comprises a modified fiber core 1, a cladding 2, a coating layer 3 and a hydrophobic layer 4, wherein the diameter of the cladding is 130-160 mu m, and the thickness of the coating layer 3 is 0.25-0.4 mm.
The modified fiber core 1 is a Ge and Si composite material fiber core modified by lanthanum, the cladding 2 is a quartz layer, and the hydrophobic layer (4) is a hydrophobic modified graphene material.
The preparation method comprises the following steps:
the method comprises the following steps: modification of graphene
Dispersing 100g of graphene oxide into distilled water, carrying out ultrasonic treatment for 2-3h, adding 2mL of 80 wt% hydrazine hydrate, heating to 93-97 ℃, stirring for 10-15min, carrying out condensation reflux for 22-24h, adding an excessive 5mol/L dilute hydrochloric acid solution, filtering and washing after generating a precipitate until the precipitate is neutral, drying at 50-60 ℃, finally, uniformly mixing a dried product and polydimethylsiloxane in a mass ratio of 2:1, placing the mixture in a muffle furnace, and carrying out heat preservation for 1-1.5h at 230-240 ℃ to obtain modified graphene;
step two: preparation of base optical fiber
2.1) weighing GeCl respectively according to the molar ratio of 1:5:14、SiCl4、LaCl3Heating to form a gaseous mixture;
2.2) preparing the gaseous mixture obtained in the step 2.1) into a prefabricated rod by adopting an MCVD method;
2.3) placing the prefabricated rod in the step 2.2) in an optical fiber drawing tower for drawing, and quickly coating two layers of resin on the surface after drawing to obtain a basic optical fiber;
step three: surface modification of base optical fiber
And dispersing the modified graphene prepared in the first step into distilled water to prepare a modified graphene solution with the concentration of 0.7-1.0 wt%, soaking the base optical fiber prepared in the second step in the modified graphene solution for 1-3h, taking out, and drying at 80-100 ℃ to obtain the waterproof and fireproof optical fiber.
The prepared optical fiber is subjected to waterproof and fireproof performance tests, and the test process and the test result are as follows:
firstly, soaking the optical fiber and taking out the optical fiber from water for a period of time, testing the water residue on the surface of the optical fiber, and observing that the surface of the optical fiber has no water bead residue and has no influence on the conduction;
secondly, firing the optical fiber by adopting open flame, observing the thermal expansibility of the optical fiber, and testing to ensure that the fired optical fiber has no thermal expansion and melting performance;
the tests show that the optical fiber material has the performances of water erosion resistance and high-temperature burning resistance, can be applied under extreme conditions, and widens the application range.
Example 2
As shown in fig. 2, the lighting system prepared by using the waterproof and fireproof optical fiber of example 1 provided by the present invention comprises: the system comprises a light source 5, a coupling device 6, a first optical fiber 7, a light gathering device 8, a second optical fiber 9 and a terminal 10;
the light source 5 is a monochromatic light source; the input end of the coupling device 6 is provided with a focusing lens I61, and the light source 5 is connected with the input end of the coupling device 6; the output end of the coupling device 6 is connected with the input end of the first optical fiber 7, and the light source 5, the first focusing lens 61 and the first optical fiber 7 correspond to each other one by one; the output end of the first optical fiber 7 is connected with the input end of the light condensing device 8, a light condensing prism 81 and a second focusing lens 82 are sequentially arranged in the light condensing device 8 from the input end according to the light propagation direction, the output end of the light condensing device 8 is connected with the input end of the second optical fiber 9, and the output end of the second optical fiber 9 is connected with the terminal 10.
The condenser prism 81 is a depolarizing condenser prism, and the terminal 10 is an illumination device.
When the light source is used, monochromatic light is emitted by the light source 5, is condensed by the first focusing lens 61 in the coupling device 6, is completely and parallelly irradiated into the optical fiber, is transmitted to a using end through the optical fiber, is condensed into mixed light by the condensing prism 81 in the condensing device 8, is parallelly incident to the second optical fiber 9 after being condensed by the second focusing lens 82, and is transmitted to the terminal 10 for illumination through the second optical fiber 9.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. A waterproof and fireproof optical fiber comprising, in order from the center to the surface: the fiber comprises a modified fiber core (1), a cladding (2), a coating layer (3) and a hydrophobic layer (4), wherein the diameter of the cladding is 130-160 mu m, and the thickness of the coating layer (3) is 0.25-0.4 mm; the modified fiber core (1) is a Ge and Si composite material fiber core modified by lanthanum, the cladding (2) is a quartz layer, and the hydrophobic layer (4) is a hydrophobic modified graphene material; the preparation method of the waterproof and fireproof optical fiber is characterized by comprising the following steps:
the method comprises the following steps: modification of graphene
Dispersing graphene oxide into distilled water, carrying out ultrasonic treatment for 2-3h, adding 80 wt% hydrazine hydrate, heating to 93-97 ℃, stirring for 10-15min, carrying out condensation reflux for 22-24h, adding a dilute hydrochloric acid solution, filtering, washing to neutrality, drying at 50-60 ℃, uniformly mixing a dried product and a hydrophobic agent, placing the mixture in a muffle furnace, and carrying out heat preservation for 1-1.5h at 230-240 ℃ to obtain modified graphene;
step two: preparation of base optical fiber
2.1) weighing GeCl respectively according to the molar ratio of 1:5:14、SiCl4、LaCl3Heating to form a gaseous mixture;
2.2) preparing the gaseous mixture obtained in the step 2.1) into a prefabricated rod by adopting an MCVD method;
2.3) placing the prefabricated rod in the step 2.2) in an optical fiber drawing tower for drawing, and quickly coating two layers of resin on the surface after drawing to obtain a basic optical fiber;
step three: surface modification of base optical fiber
And dispersing the modified graphene prepared in the step one into distilled water to prepare a modified graphene solution, soaking the base optical fiber prepared in the step two in the modified graphene solution for 1-3h, taking out, and drying at 80-100 ℃ to obtain the waterproof and fireproof optical fiber.
2. The waterproof and fireproof optical fiber according to claim 1, wherein the mass ratio of hydrazine hydrate to graphene oxide in the first step is 1.6: 100.
3. The waterproof and fireproof optical fiber of claim 1, wherein the hydrophobic agent in the first step is polydimethylsiloxane.
4. The waterproof and fireproof optical fiber according to claim 1, wherein the concentration of the modified graphene solution in step three is 0.7 wt% to 1.0 wt%.
5. A waterproof and fireproof fiber optic lighting system according to any of claims 1-4, comprising in series: the device comprises a light source (5), a coupling device (6), a first optical fiber (7), a light gathering device (8), a second optical fiber (9) and a terminal (10);
the light source (5) is a monochromatic light source; the input end of the coupling device (6) is provided with a first focusing lens (61), and the light source (5) is connected with the input end of the coupling device (6); the output end of the coupling device (6) is connected with the input end of the first optical fiber (7), and the light source (5), the first focusing lens (61) and the first optical fiber (7) correspond to each other one by one; the output end of the first optical fiber (7) is connected with the input end of the light condensing device (8), a light condensing prism (81) and a second focusing lens (82) are sequentially arranged in the light condensing device (8) from the input end in the light propagation direction, the output end of the light condensing device (8) is connected with the input end of the second optical fiber (9), and the output end of the second optical fiber (9) is connected with the terminal (10).
6. A waterproof and fireproof fiber optic illumination system according to claim 5, wherein the condenser prism (81) is a depolarizing condenser prism.
7. A waterproof and fireproof fiber optic lighting system according to claim 5, wherein the terminal (10) is a lighting device.
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| CN201910761035.XA CN110456447B (en) | 2019-08-17 | 2019-08-17 | Waterproof and fireproof optical fiber, preparation method thereof and lighting system adopting optical fiber |
| PCT/CN2019/101550 WO2021031115A1 (en) | 2019-08-17 | 2019-08-20 | Waterproof and fireproof optical fiber and preparation method therefor, and illuminating system using optical fiber |
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| CN100480751C (en) * | 2001-12-18 | 2009-04-22 | 古河电气工业株式会社 | Optical fibre for light amplifier |
| CN1271441C (en) * | 2003-12-30 | 2006-08-23 | 天津大学 | Automatic linear variable monochromatic illumination device for microscope |
| JP5759854B2 (en) * | 2011-09-30 | 2015-08-05 | 株式会社日立製作所 | Hydrogen concentration measuring device and hydrogen concentration display device |
| CN102815866B (en) * | 2012-08-17 | 2015-03-11 | 华中科技大学 | Doping device for optical fiber preform |
| CN203395799U (en) * | 2013-07-09 | 2014-01-15 | 国家电网公司 | Natural light extender |
| US9328018B2 (en) * | 2013-11-03 | 2016-05-03 | Tyson York Winarski | Graphene coated optic fibers |
| CN203810289U (en) * | 2014-05-13 | 2014-09-03 | 烟台有信机械零部件有限公司 | Optical-fiber-based LED light source device |
| CN104503020A (en) * | 2014-12-19 | 2015-04-08 | 华中科技大学 | Longitudinal spiral mode transfer optical fiber |
| CN207729291U (en) * | 2018-01-05 | 2018-08-14 | 杭州远方光电信息股份有限公司 | A kind of lighting device |
| CN208224563U (en) * | 2018-06-12 | 2018-12-11 | 上海昊量光电设备有限公司 | A kind of silica fiber optic cable |
| CN109254369B (en) * | 2018-11-29 | 2020-11-17 | 安徽牡东通讯光缆有限公司 | Anti-electric-mark corrosion self-supporting optical cable |
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