CN101271173A - Terahertz liquid core optical fiber - Google Patents
Terahertz liquid core optical fiber Download PDFInfo
- Publication number
- CN101271173A CN101271173A CNA2008100239708A CN200810023970A CN101271173A CN 101271173 A CN101271173 A CN 101271173A CN A2008100239708 A CNA2008100239708 A CN A2008100239708A CN 200810023970 A CN200810023970 A CN 200810023970A CN 101271173 A CN101271173 A CN 101271173A
- Authority
- CN
- China
- Prior art keywords
- optical fiber
- core layer
- organic solvent
- liquid
- terahertz
- 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.)
- Pending
Links
- 239000013307 optical fiber Substances 0.000 title claims abstract description 23
- 239000007788 liquid Substances 0.000 title claims abstract description 19
- 239000000463 material Substances 0.000 claims abstract description 23
- 239000003960 organic solvent Substances 0.000 claims abstract description 22
- 229930195733 hydrocarbon Natural products 0.000 claims abstract description 16
- -1 polytetrafluoroethylene Polymers 0.000 claims abstract description 13
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 9
- 239000005662 Paraffin oil Substances 0.000 claims abstract description 4
- 239000011162 core material Substances 0.000 claims description 24
- 239000004809 Teflon Substances 0.000 claims description 12
- 229920006362 Teflon® Polymers 0.000 claims description 12
- 150000002430 hydrocarbons Chemical class 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 abstract description 16
- 239000004215 Carbon black (E152) Substances 0.000 abstract description 10
- 239000012792 core layer Substances 0.000 abstract description 8
- 239000000126 substance Substances 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000005253 cladding Methods 0.000 abstract 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 abstract 3
- 239000004810 polytetrafluoroethylene Substances 0.000 abstract 3
- 238000009434 installation Methods 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 11
- 229940094933 n-dodecane Drugs 0.000 description 5
- SNRUBQQJIBEYMU-UHFFFAOYSA-N dodecane Chemical compound CCCCCCCCCCCC SNRUBQQJIBEYMU-UHFFFAOYSA-N 0.000 description 4
- 239000000835 fiber Substances 0.000 description 3
- 230000008033 biological extinction Effects 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000004611 spectroscopical analysis Methods 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004038 photonic crystal Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000003495 polar organic solvent Substances 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 229910052594 sapphire Inorganic materials 0.000 description 1
- 239000010980 sapphire Substances 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
Images
Landscapes
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
Abstract
The invention discloses a Tera-hertz liquid-core optical fiber, comprising an external cladding and an internal core layer, wherein, the material of the cladding is polytetrafluoroethylene, the material of the core layer is a non-polar high-carbon hydrocarbon organic solvent, a weak-polar high-carbon hydrocarbon organic solvent or the mixture of the two organic solvents. The material of the core layer can be the high-carbon hydrocarbon organic solvent, and paraffin oil with the main component of the high-carbon hydrocarbon is especially applicable to the material of the core layer. The polytetrafluoroethylene has small change of refractive index and slightly small value in the wave band, which forms the relatively optical-thin and optical-dense relations with the material of the core layer; the polytetrafluoroethylene also has the advantages of small loss, good mechanical properties and stable chemical performances etc., thus being capable of being used as the material of the cladding of the Tera-hertz liquid-core optical fiber. The liquid-core optical fiber which is produced by using the two materials can not only have low light loss during the transmission process, but can also facilitate the introduction into the practical application due to the convenient obtainment of the materials; furthermore, the production cost is low; in addition, as the core layer is the liquid, the core layer is easier to be bent than the ordinary optical fiber, and the installation is more convenient.
Description
One, technical field
The present invention relates to a kind of optical fiber transmission line, specifically is a kind of liquid-core optical fibre structure Terahertz wave transmission line.
Two, background technology
Since eighties of last century eight, the nine's Terahertz (THz) notions were suggested, Terahertz Technology had been subjected to paying close attention to widely.The Terahertz spectroscopy has all represented extraordinary prospect with the application that is imaged on aspects such as biology, medicine, chemical, uranology, geoscience and safety guard; The Terahertz radar with communicate by letter, obtained in theory the demonstration have more advantage than existing microwave radar with communicating by letter.Developed country such as the U.S., Japan classifies Terahertz Technology as one of most important science and technology of 21 century one after another, has thrown lot of manpower and material resources all, carries out the R﹠D work to each link of Terahertz Technology.It mainly comprises: the generation of terahertz electromagnetic wave is that the transmission of Terahertz source, terahertz electromagnetic wave is the detection of Terahertz transmission line and terahertz electromagnetic wave.Content of the present invention promptly belongs to Terahertz transmission line category.
The Terahertz transmission line that relatively receives publicity at present has circular and rectangular metal waveguide, sapphire fiber, parallel-plate, banded plastics, photonic crystal fiber, metal wire.But the different defective that above transmission structure all exists is as: high loss, high cost and complicated manufacturing process too.At therewith, the present invention proposes a kind of low-loss, low cost, flexible and be easy to introduce the terahertz electromagnetic wave transmission structure of actual use: terahertz liquid core optical fiber.
Total reflection principle when liquid-core optical fibre is propagated in different medium according to electromagnetic wave.Its funtion part structure mainly is the covering of being made by the sandwich layer of optically denser medium (liquid state) filling and optically thinner medium (solid-state).The size of sandwich layer depends on for the concrete technical requirement of optical fiber such as single mode or multimode is transmitted, the power and the transmission frequency of transmission of power; the manufacturing process of liquid optical fiber is increasingly mature, and the key of making the liquid optical fiber of Terahertz is to find at little liquid core layer material of terahertz wave band transmittance height, variations in refractive index and the solid-state clad material that is complementary with it.
Three, summary of the invention
Technical matters to be solved by this invention is to overcome the deficiencies in the prior art, and a kind of low-loss, low cost, flexible and be easy to introduce the terahertz liquid core optical fiber of actual use are provided.
Terahertz liquid core optical fiber of the present invention, comprise outside covering and inner sandwich layer, described clad material is a teflon, and core material is the potpourri of nonpolar higher hydrocarbons organic solvent, low pole higher hydrocarbons organic solvent or above-mentioned both organic solvents.
Above-mentioned core material can be the paraffin oil that high carbon alkane organic solvent, particularly principal ingredient are high carbon alkane, and it has cheap, not volatile advantage, is well suited for as core material.
The diameter of sandwich layer is according to the single mode transport condition:
d＜2.4048*λ/π/(n
1 2-n
2 2)
0.5
λ is a wavelength in the formula, n
1And n
2Be respectively sandwich layer and the clad material refractive index at the transmission wave band, if do sandwich layer with dodecane, teflon is done covering, and d should be less than 478 microns.
The present invention by Terahertz spectroscopy commercial measurement refractive index and the extinction coefficient of some nonpolar or weakly polar organic solvent at terahertz wave band (0.2-3THz).Measurement result shows that the hydrocarbon organic solvent simple substance of nonpolar or low pole and potpourri are very little in the variations in refractive index of this wave band, and light transmission is outstanding, suitable core material as terahertz liquid core optical fiber.Wherein, principal ingredient be high carbon alkane, recovered (distilled) temperature be 300 ℃ chemical pure paraffin oil because of it cheap and not volatile first-selection that is recommended as.Measured refractive index and the extinction coefficient of teflon (Teflon) simultaneously at identical wave band.Teflon is little and numerical value is smaller in the variations in refractive index of this wave band, has formed relative light with core material and has dredged and the close relation of light, and it is little to possess loss again, and mechanical property is good, advantages such as stable chemical performance, thereby can be used as the clad material of terahertz liquid core optical fiber.Empirical tests, adopt liquid-core optical fibre that these two kinds of materials make not only in transmission course fiber-loss low, and material obtains and conveniently is convenient to introduce practical application, and low production cost, because sandwich layer is a liquid, ordinary optic fibre is more flexible relatively, installs also more convenient in addition.
Four, description of drawings
Fig. 1 is that core material is a dodecane, and clad material is that teflon transmission wave band is the single mode liquid core waveguide structure exemplary plot of 1THz-2THz,
Fig. 2 is the refractive index (solid line) of terahertz wave band teflon and the refractive index of n-dodecane hydrocarbon organic solvent (dotted line).
Five, embodiment
As shown in Figure 1, terahertz liquid core optical fiber of the present invention, comprise outside covering 1 and inner sandwich layer 2, wherein the material of covering 1 is a teflon, the material of sandwich layer 2 is the potpourri of nonpolar higher hydrocarbons organic solvent, low pole higher hydrocarbons organic solvent or above-mentioned both organic solvents, and core material has adopted n-dodecane hydrocarbon organic solvent in the present embodiment.Clad material thickness does not influence laser propagation effect, and the sandwich layer diameter is according to single mode transport condition d＜2.4048* λ/π/(n
1 2-n
2 2)
0.5, should be less than 478 microns, λ is a wavelength, n
1And n
2Be respectively sandwich layer and clad material refractive index at the transmission wave band.
Fig. 2 is the refractive index (solid line) of terahertz wave band teflon and the refractive index of n-dodecane hydrocarbon organic solvent (dotted line), as seen from the figure, and both refractions under identical wave band.Wherein the variations in refractive index of teflon is little and the relative n-dodecane hydrocarbon of numerical value organic solvent is smaller, having formed relative light with n-dodecane hydrocarbon organic solvent dredges and the close relation of light, it is less that the while teflon possesses loss again, mechanical property is good, advantages such as stable chemical performance, thereby can be used as the clad material of terahertz liquid core optical fiber.
Claims (3)
1, a kind of terahertz liquid core optical fiber, comprise outside covering and inner sandwich layer, it is characterized in that: described clad material is a teflon, and core material is the potpourri of nonpolar higher hydrocarbons organic solvent, low pole higher hydrocarbons organic solvent or above-mentioned both organic solvents.
2, terahertz liquid core optical fiber according to claim 1 is characterized in that: described core material is high carbon alkane organic solvent.
3, terahertz liquid core optical fiber according to claim 2 is characterized in that: described high carbon alkane organic solvent is a paraffin oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100239708A CN101271173A (en) | 2008-04-23 | 2008-04-23 | Terahertz liquid core optical fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100239708A CN101271173A (en) | 2008-04-23 | 2008-04-23 | Terahertz liquid core optical fiber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101271173A true CN101271173A (en) | 2008-09-24 |
Family
ID=40005252
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100239708A Pending CN101271173A (en) | 2008-04-23 | 2008-04-23 | Terahertz liquid core optical fiber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101271173A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103155271A (en) * | 2010-10-12 | 2013-06-12 | 皇家飞利浦电子股份有限公司 | Wire-type waveguide for terahertz radiation |
| CN104614092A (en) * | 2015-02-12 | 2015-05-13 | 哈尔滨理工大学 | Modular interface temperature sensor of liquid-core optical fiber |
-
2008
- 2008-04-23 CN CNA2008100239708A patent/CN101271173A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103155271A (en) * | 2010-10-12 | 2013-06-12 | 皇家飞利浦电子股份有限公司 | Wire-type waveguide for terahertz radiation |
| CN104614092A (en) * | 2015-02-12 | 2015-05-13 | 哈尔滨理工大学 | Modular interface temperature sensor of liquid-core optical fiber |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Liu et al. | Independently tunable triple Fano resonances based on MIM waveguide structure with a semi-ring cavity and its sensing characteristics | |
| Nagel et al. | Low-index discontinuity terahertz waveguides | |
| Zhou et al. | Fully suspended slot waveguides for high refractive index sensitivity | |
| Yang et al. | Circular hole ENZ photonic crystal fibers exhibit high birefringence | |
| Liu et al. | Surface plasmon resonance sensor based on U-shaped photonic quasi-crystal fiber | |
| Nguema et al. | Broadband terahertz transmission within the air channel of thin-wall pipe | |
| Zhang et al. | All fiber compact bending sensor with high sensitivity based on a multimode fiber embedded chirped long-period grating | |
| Jiang et al. | Design and simulation of a GST-based metasurface with strong and switchable circular dichroism | |
| Mei et al. | A wavelength demultiplexing structure based on plasmonic MDM side-coupled cavities | |
| Yang et al. | In-fiber refractive index sensor based on single eccentric hole-assisted dual-core fiber | |
| Rohimah et al. | Tunable multiple Fano resonances based on a plasmonic metal-insulator-metal structure for nano-sensing and plasma blood sensing applications | |
| Zhu et al. | Compact, broadband, and low-loss silicon photonic arbitrary ratio power splitter using adiabatic taper | |
| Qu et al. | Surface plasmon resonance-based silicon dual-core photonic crystal fiber polarization beam splitter at the mid-infrared spectral region | |
| Zhu et al. | Detecting the temperature of ethanol based on Fano resonance spectra obtained using a metal-insulator-metal waveguide with SiO 2 branches | |
| Guo et al. | Temperature sensor using an optical fiber coupler with a thin film | |
| Guo et al. | Tapered multicore fiber interferometer for refractive index sensing with graphene enhancement | |
| Wu et al. | Compact and ultra-broadband all-silicon TM-pass and TE-reflected polarizer using grating based weakly coupled nanowires | |
| Xu et al. | Dual-band topological rainbows in Penrose-triangle photonic crystals | |
| Mridha et al. | Active terahertz two-wire waveguides | |
| Shi et al. | Side-coupled liquid sensor and its array with magneto-optical photonic crystal | |
| Badri et al. | Coupling silica waveguides to photonic crystal waveguides through a multilayered Luneburg lens | |
| Zhang et al. | All-silicon TM polarizer covering the 1260–1675 nm bandwidth using a band engineered subwavelength grating waveguide | |
| CN102338905B (en) | Optical fiber for transmitting terahertz waves | |
| Liu et al. | Terahertz narrowband filter metasurfaces based on bound states in the continuum | |
| Djavid et al. | Photonic crystal power dividers using L-shaped bend based on ring resonators |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20080924 |