CN113433616B - Ice micro-nano optical fiber capable of being used for wide-spectrum low-loss optical guided wave - Google Patents
Ice micro-nano optical fiber capable of being used for wide-spectrum low-loss optical guided wave Download PDFInfo
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- CN113433616B CN113433616B CN202110732011.9A CN202110732011A CN113433616B CN 113433616 B CN113433616 B CN 113433616B CN 202110732011 A CN202110732011 A CN 202110732011A CN 113433616 B CN113433616 B CN 113433616B
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- 239000013307 optical fiber Substances 0.000 title claims abstract description 108
- 230000003287 optical effect Effects 0.000 title claims abstract description 23
- 238000001228 spectrum Methods 0.000 title claims abstract description 15
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 101
- 239000010453 quartz Substances 0.000 claims abstract description 99
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 96
- 239000000835 fiber Substances 0.000 claims abstract description 56
- 230000007704 transition Effects 0.000 claims abstract description 28
- 239000002121 nanofiber Substances 0.000 claims abstract description 15
- 230000006698 induction Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 239000013078 crystal Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- 239000000523 sample Substances 0.000 claims description 3
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 3
- 229910052721 tungsten Inorganic materials 0.000 claims description 3
- 239000010937 tungsten Substances 0.000 claims description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 18
- 229910052757 nitrogen Inorganic materials 0.000 description 9
- 238000012681 fiber drawing Methods 0.000 description 8
- 239000007788 liquid Substances 0.000 description 5
- 230000003993 interaction Effects 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000001237 Raman spectrum Methods 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000000862 absorption spectrum Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 238000000399 optical microscopy Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 238000000233 ultraviolet lithography Methods 0.000 description 1
- 238000001845 vibrational spectrum Methods 0.000 description 1
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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
- G02B6/10—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
- G02B6/12—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind
- G02B6/12004—Combinations of two or more optical elements
-
- 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
- G02B6/10—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
- G02B6/12—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind
- G02B6/122—Basic optical elements, e.g. light-guiding paths
- G02B6/1228—Tapered waveguides, e.g. integrated spot-size transformers
-
- 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
- G02B6/10—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
- G02B6/12—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind
- G02B6/13—Integrated optical circuits characterised by the manufacturing method
-
- 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
- G02B6/10—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
- G02B6/12—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind
- G02B2006/12133—Functions
- G02B2006/12147—Coupler
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Power Engineering (AREA)
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
Abstract
The invention discloses an ice micro-nano optical fiber capable of being used for wide-spectrum low-loss optical guided waves. The device comprises a light source, a quartz single-mode fiber, a quartz fiber tapering transition region, a quartz fiber tapering stretching part and an ice micro-nano fiber; the device comprises a light source, a quartz single-mode fiber, a quartz fiber tapering transition region, a quartz fiber tapering part, a micro-nano ice fiber and a micro-nano ice fiber, wherein the light source is connected with one end of the quartz single-mode fiber; the ice micro-nano optical fiber is formed by growing water vapor into ice at the tail end of the ice micro-nano optical fiber support. The ice micro-nano optical fiber can efficiently transmit visible light wave band light waves with the waveguide loss less than 0.03 dB/cm.
Description
Technical Field
The invention relates to a micro-nano optical fiber for transmitting visible light with low loss in the field of photonic integration and devices, in particular to an ice micro-nano optical fiber for wide-spectrum low-loss optical guided waves.
Background
Ice is one of the most abundant and important solid substances on the earth, and has wide research and application values in the fields of physical chemistry, life science, geological astronomy, environmental climate and the like. Ice and water have extremely low optical absorption rates in the ultraviolet to near infrared region, and are often used as a good optical medium in the fields of optical microscopy, ultraviolet lithography and the like. In addition, the utilization of optical means such as raman spectrum, near infrared absorption spectrum, sum frequency vibration spectrum and the like has the advantages of high detection sensitivity, low background noise, no invasion and the like on the physical and chemical properties of ice, and has been widely paid attention to and applied.
However, the current research is limited to the interaction between space light and large-size massive ice, and has the disadvantages of weak optical field constraint capability, weak interaction between light and substance, complex optical system and the like, so that the development of the ice in the research of physicochemical characteristics and the application of the ice in the direction of optical devices are limited.
Disclosure of Invention
The invention aims to provide an ice micro-nano optical fiber for a wide-spectrum low-loss optical waveguide, which improves the constraint capacity of an optical field and enhances the interaction between light and a substance by a simple optical system. The wide spectrum can reach 475nm-600 nm.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the invention comprises a light source, a quartz single mode fiber, a quartz fiber tapering transition region, a quartz fiber tapering stretching part and an ice micro-nano fiber; the device comprises a light source, a quartz single mode fiber, a quartz optical fiber tapering transition region, a quartz optical fiber tapering part, a quartz micro-nano optical fiber and a quartz micro-nano optical fiber, wherein the light source is connected with one end of the quartz single mode fiber; the ice micro-nano optical fiber is formed by growing water vapor into ice at the tail end of the ice micro-nano optical fiber support.
Broad spectrum light is emitted by a light source, sequentially passes through a quartz single mode fiber and a quartz fiber tapering transition region, and is coupled into the ice micro-nano fiber after the quartz fiber tapering transition region is drawn.
The output end of the stretching part of the quartz optical fiber taper and the input end of the ice micro-nano optical fiber tightly coupled are arranged in the same straight line.
The ice micro-nano optical fiber support is a tungsten filament probe.
The diameter of the stretching part of the quartz optical fiber tapering is smaller than that of the quartz single-mode optical fiber, and the quartz optical fiber tapering transition region is used for transitionally connecting the diameter of the stretching part of the quartz optical fiber tapering and the diameter of the quartz single-mode optical fiber.
The quartz single-mode fiber, the quartz fiber tapering transition region and the quartz fiber tapering stretching part are all prepared from one quartz fiber according to the following modes: heating and melting the quartz optical fiber under oxyhydrogen flame, stretching from two ends to make the diameter of the middle part of the quartz optical fiber thin, forming conical transition areas on two sides of the middle part of the quartz optical fiber with the thin diameter, then cutting the quartz optical fiber in the middle part, taking a thin and uniform section as a stretching part of a quartz optical fiber tapering, taking a section with the same original diameter as a quartz single-mode optical fiber, and taking the other sections with the middle diameter changing transition as the quartz optical fiber tapering transition areas.
The ice micro-nano optical fiber is prepared by growing and preparing the ice micro-nano optical fiber at the tail end of an ice micro-nano optical fiber support by taking water vapor in air as a raw material at about-50 ℃ through a high-voltage electric induction method, and the structure of the ice micro-nano optical fiber is single crystal.
The diameter of the drawn portion of the silica optical fiber was 1 μm.
The ice micro-nano optical fiber structure has the diameter of 0.8-10 mu m and the length of 10-1000 mu m.
Compared with the prior art, the invention has the beneficial effects that:
(1) the waveguide loss of the ice micro-nano optical fiber in the whole visible light region is less than 0.03 dB/cm;
(2) the light is simply and conveniently guided into the ice micro-nano optical fiber by using an all-fiber structure in an evanescent field coupling mode;
(3) the strong constraint characteristic of the one-dimensional micro-nano waveguide to the optical field is utilized, so that the interaction between the optical field and ice is greatly improved;
(4) the ice micro-nano optical fiber structure provided by the invention provides a brand-new and efficient platform for ice-based characteristic research and application of photonic devices.
Drawings
FIG. 1 is a schematic structural diagram of a wide-spectrum low-loss optical guided-wave ice micro-nano optical fiber of the present invention;
in the figure, 1-light source, 2-quartz single mode fiber, 3-quartz fiber tapering transition region, 4-quartz fiber tapering stretching part, 5-ice micro-nano fiber and 6-ice micro-nano fiber support.
FIG. 2 is a schematic diagram of a growing apparatus for preparing ice micro-nano optical fibers;
in the figure, 6-an ice micro-nano optical fiber support, 7-a lead for connecting the ice micro-nano optical fiber and a high-voltage power supply, 8-the high-voltage power supply, 9-an arc metal electrode, 10-a lead for connecting the metal electrode and the ground, 11-the ground, 12-the outer surface of the outer wall of a growth cavity, 13-the inner surface of the outer wall of the growth cavity, 14-the outer surface of the inner wall of the growth cavity, 15-the inner surface of the inner wall of the growth cavity, 16-a liquid nitrogen injection port, 17-a nitrogen outlet and 18-a thermocouple.
FIG. 3 is a graph showing the results of surface scattering of monochromatic light at 475nm, 500nm, 525nm, 550nm, 575nm and 600nm in a visible light region conducted by an ice micro-nano optical fiber with a diameter of 4.4 μm and a length of 200 μm.
FIG. 4 is a graph showing the results of the surface scattering intensity of the ice micro-nano optical fiber within a length range of 275 μm from the output end when the ice micro-nano optical fiber with a diameter of 5.4 μm conducts 525nm monochromatic light under a dark background.
Detailed Description
In order to make the technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below with reference to the accompanying drawings. It is to be understood that the described examples are only a few embodiments of the invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
As shown in fig. 1, the specific implementation includes a light source 1, a quartz single mode fiber 2, a quartz fiber tapering transition region 3, a quartz fiber tapering stretching portion 4, and an ice micro-nano fiber 5; the ice micro-nano optical fiber drawing device comprises a light source 1, a quartz single mode fiber 2, a quartz optical fiber drawing transition area 3, a quartz optical fiber drawing part 4, a quartz optical fiber drawing cone, a quartz micro-nano optical fiber 5 and a quartz optical fiber drawing cone, wherein the light source 1 is connected with one end of the quartz single mode fiber 2, the other end of the quartz single mode fiber 2 is connected with the quartz optical fiber drawing cone stretching part 4 through the quartz optical fiber drawing cone transition area 3, and the quartz optical fiber drawing cone stretching part 4 is closely attached to and coupled with the ice micro-nano optical fiber 5; the ice micro-nano optical fiber 5 is formed by growing water vapor into ice at the tail end of the ice micro-nano optical fiber support 6.
Broad spectrum light is emitted by a light source 1, sequentially passes through a quartz single mode fiber 2, a quartz fiber tapering transition region 3 and a quartz fiber tapering stretching part 4, and then is coupled into an ice micro-nano fiber 5 through an evanescent field. The ice micro-nano optical fiber can efficiently transmit visible wave band light waves with the waveguide loss less than 0.03 dB/cm.
The quartz single-mode fiber 2, the quartz fiber tapering transition region 3, the quartz fiber tapering stretching part 4 and the ice micro-nano fiber 5 are arranged along the same straight line.
The ice micro-nano optical fiber support 6 is a tungsten filament probe.
The diameter of the stretching part 4 of the quartz optical fiber tapering is smaller than that of the quartz single-mode optical fiber 2, and the quartz optical fiber tapering transition region 3 is used for transitionally connecting the diameter of the stretching part 4 of the quartz optical fiber tapering and the diameter of the quartz single-mode optical fiber 2.
The quartz single-mode fiber 2, the quartz fiber tapering transition region 3 and the quartz fiber tapering stretching part 4 are all prepared by a quartz fiber according to the following method: heating and melting the quartz optical fiber under oxyhydrogen flame, stretching from two ends to make the diameter of the middle part of the quartz optical fiber thin, forming conical transition areas on two sides of the middle part of the quartz optical fiber with the thin diameter, then cutting the quartz optical fiber in the middle part, taking a thin and uniform section as a stretching part 4 of a quartz optical fiber tapering, taking a section with the same original diameter as a quartz single-mode optical fiber 2, and taking the other sections with the middle diameter changing transition as a quartz optical fiber tapering transition area 3.
The ice micro-nano optical fiber 5 is prepared by growing on the tail end of an ice micro-nano optical fiber support 6 by taking water vapor in air as a raw material at about-50 ℃ through a high-voltage electric induction method, and the structure is single crystal.
The specific preparation process comprises the following steps: as shown in figure 2, the ice micro-nano optical fiber support 6 is connected with a high-voltage power supply 8 through a lead 7, and an arc metal electrode 9 is tightly attached to the inner surface 15 of the inner wall of the growth cavity and is connected with the ground 11 through a lead 10. The upper end of the shell of the growth device is provided with a liquid nitrogen injection port 16 and a nitrogen outlet 17, and a thermocouple 18 is arranged in the growth device. When the ice micro-nano optical fiber is prepared, the liquid nitrogen is poured between the inner surface 13 of the outer wall of the growth cavity and the outer surface 14 of the inner wall of the growth cavity from a liquid nitrogen injection port 16 of the shell of the growth device, the liquid nitrogen is rapidly gasified into nitrogen and is volatilized from a nitrogen outlet 17, and the temperature in the growth device is reduced. When the temperature near the ice micro-nano optical fiber support 6 is measured by the thermocouple 18 to be about-50 ℃, the high-voltage power supply 8 is started, water molecules near the tip of the ice micro-nano optical fiber support 6 are quickly condensed under the induction of a high-voltage electric field, and the ice micro-nano optical fiber with the diameter of 0.8-10 mu m and the length of 10-1000 mu m is grown.
Specifically, a wide-spectrum transmission characteristic test of the ice micro-nano optical fiber in a visible region is carried out, and the result is shown in fig. 3, and monochromatic light with wavelengths of 475nm, 500nm, 525nm, 550nm, 575nm and 600nm in the visible region enters the ice micro-nano optical fiber with the diameter of 4.4 μm and the length of 200 μm in an evanescent field coupling mode.
As can be seen from fig. 3, when the monochromatic light of the representative six wavelengths passes through the ice micro-nano fiber, the surface has no strong scattering point except the output end point, indicating that the ice micro-nano line has low waveguide loss and high transmittance in the visible region.
The invention estimates the waveguide loss of the ice micro-nano fiber in the visible light region, as shown in fig. 4, monochromatic light with the wavelength of 525nm is guided into the ice micro-nano fiber with the diameter of 5.4 mu m in an evanescent field coupling mode, and the surface scattering intensity of the ice micro-nano fiber along the length direction is collected in the environment of dark background.
Selecting a section of ice micro-nano optical fiber area without obvious pollution, comparing the scattering intensity with the output end scattering intensity of the ice micro-nano optical fiber area with a section of ice micro-nano optical fiber area with the length of 50 mu m as shown by a dotted line frame, and obtaining the ice micro-nano optical fiber with the waveguide loss of less than 0.03 dB/cm.
Claims (7)
1. An ice micro-nano optical fiber capable of being used for wide-spectrum low-loss optical guided waves is characterized in that: the device comprises a light source (1), a quartz single-mode fiber (2), a quartz fiber tapering transition region (3), a quartz fiber tapering stretching part (4) and an ice micro-nano fiber (5); the light source (1) is connected with one end of a quartz single mode fiber (2), the other end of the quartz single mode fiber (2) is connected with a stretching part (4) of a quartz fiber tapering through a quartz fiber tapering transition region (3), and the stretching part (4) of the quartz fiber tapering is closely attached to and coupled with the input end of the ice micro-nano fiber (5); the ice micro-nano optical fiber (5) is formed by growing water vapor into ice at the tail end of the ice micro-nano optical fiber support (6);
the ice micro-nano optical fiber (5) is prepared by growing and preparing at the tail end of an ice micro-nano optical fiber support (6) by taking water vapor in air as a raw material at-50 ℃ through a high-voltage electric induction method, and the structure is single crystal.
2. The ice micro-nano optical fiber applicable to wide-spectrum low-loss optical guided waves according to claim 1, which is characterized in that: broad spectrum light is emitted by a light source (1), sequentially passes through a quartz single mode fiber (2), a quartz fiber tapering transition region (3) and a stretching part (4) of the quartz fiber tapering, and then is coupled into an ice micro-nano fiber (5).
3. The ice micro-nano optical fiber applicable to wide-spectrum low-loss optical guided waves according to claim 1, which is characterized in that: the output end of the stretching part (4) of the quartz optical fiber taper and the input end of the ice micro-nano optical fiber (5) which is closely coupled are arranged in the same straight line.
4. The ice micro-nano optical fiber for the wide-spectrum low-loss optical guided wave according to claim 1, which is characterized in that: the ice micro-nano optical fiber support (6) is a tungsten filament probe.
5. The ice micro-nano optical fiber applicable to wide-spectrum low-loss optical guided waves according to claim 1, which is characterized in that: the quartz single-mode fiber (2), the quartz fiber tapering transition region (3) and the quartz fiber tapering stretching part (4) are all prepared from one quartz fiber according to the following modes: heating and melting the quartz optical fiber under oxyhydrogen flame, stretching from two ends to make the diameter of the middle part of the quartz optical fiber thin, then cutting off the middle part of the quartz optical fiber to obtain the quartz optical fiber, taking a thinner section as a stretching part (4) of the quartz optical fiber tapering, taking a section with the same original diameter as a quartz single-mode optical fiber (2), and taking the other section with the middle diameter change transition as a quartz optical fiber tapering transition region (3).
6. The ice micro-nano optical fiber for the wide-spectrum low-loss optical guided wave according to claim 1, which is characterized in that: the diameter of the stretching part (4) of the quartz optical fiber tapering is 1 mu m.
7. The ice micro-nano optical fiber applicable to wide-spectrum low-loss optical guided waves according to claim 1, which is characterized in that: the ice micro-nano optical fiber structure has the diameter of 0.8-10 mu m and the length of 10-1000 mu m.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110732011.9A CN113433616B (en) | 2021-06-30 | 2021-06-30 | Ice micro-nano optical fiber capable of being used for wide-spectrum low-loss optical guided wave |
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| CN202110732011.9A CN113433616B (en) | 2021-06-30 | 2021-06-30 | Ice micro-nano optical fiber capable of being used for wide-spectrum low-loss optical guided wave |
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| CN113433616B true CN113433616B (en) | 2022-07-01 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2365681Y (en) * | 1999-04-21 | 2000-02-23 | 樊邦弘 | Optical fibre (crystal optical fibre) |
| CN204538624U (en) * | 2015-04-28 | 2015-08-05 | 中国电力科学研究院 | A kind of OPGW direct current ice melting system |
| CN111864521A (en) * | 2020-07-31 | 2020-10-30 | 中国人民解放军国防科技大学 | All-fiber sodium guide star laser generation device |
| CN112456433A (en) * | 2020-10-27 | 2021-03-09 | 西湖大学 | Ice-carving-based solution-free electron beam exposure micro-nano processing method and device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040146262A1 (en) * | 2003-01-23 | 2004-07-29 | 3M Innovative Properties Company | Frozen-fluid fiber guide |
| US9963939B2 (en) * | 2016-06-24 | 2018-05-08 | Stone Aerospace, Inc. | Direct laser ice penetration system |
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2021
- 2021-06-30 CN CN202110732011.9A patent/CN113433616B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2365681Y (en) * | 1999-04-21 | 2000-02-23 | 樊邦弘 | Optical fibre (crystal optical fibre) |
| CN204538624U (en) * | 2015-04-28 | 2015-08-05 | 中国电力科学研究院 | A kind of OPGW direct current ice melting system |
| CN111864521A (en) * | 2020-07-31 | 2020-10-30 | 中国人民解放军国防科技大学 | All-fiber sodium guide star laser generation device |
| CN112456433A (en) * | 2020-10-27 | 2021-03-09 | 西湖大学 | Ice-carving-based solution-free electron beam exposure micro-nano processing method and device |
Non-Patent Citations (1)
| Title |
|---|
| Hybrid Nanophotonic Components Integrating Plasmonic and Photonic Nanowires;Xin Guo et al.;《OSA》;20101231;全文 * |
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