CN101825744B - High-nonlinearity composite-structure micro-nano optical wave conducting wire and preparation method thereof - Google Patents
High-nonlinearity composite-structure micro-nano optical wave conducting wire and preparation method thereof Download PDFInfo
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- CN101825744B CN101825744B CN2010101382700A CN201010138270A CN101825744B CN 101825744 B CN101825744 B CN 101825744B CN 2010101382700 A CN2010101382700 A CN 2010101382700A CN 201010138270 A CN201010138270 A CN 201010138270A CN 101825744 B CN101825744 B CN 101825744B
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Abstract
The invention discloses a high-nonlinearity composite-structure micro-nano optical wave conducting wire, which is characterized by comprising a silicon dioxide micro-structured optical fiber of which the length is more than or equal to 30 millimeters and the diameter is 0.4 to 8 microns, wherein the surface of the silicon dioxide micro-structured optical fiber is deposited with 1 to 100 layers of halophilic bacteria purple membranes through an LB membrane-plating technique; the thickness of each layer of the halophilic bacteria purple membranes is 5 to 20 nanometers; and two ends of silicon dioxide micro-structured optical fiber are connected with a standard optical fiber through a conical transition region and are used for connecting various optical instruments. The high-nonlinearity composite-structure micro-nano optical wave conducting wire is the combination of a silicon dioxide micro-nano optical wave conducting wire and a halophilic bacteria purple membrane material plated membrane based on a sub-wavelength diameter, and has the characteristics of large-scale evanescent wave transmission and ultrahigh optical nonlinearity.
Description
Technical field
The present invention relates to LB plated film and micronano optical technical field, be specifically related to a kind of composite structure sub-wavelength diameter micro-nano optical wave wire based on the LB plated film.
Background technology
The Langmuir-Blogeet film; Be called for short the LB film, it is that the amphiphile, amphiphilic molecule with hydrophilic head and hydrophobic tail is dispersed on the water surface (parfacies), and along continuous straight runs is exerted pressure to the water surface; Make molecule tighten the solid matter row, form one deck and arrange orderly insoluble unimolecular film at the water surface.The LB membrane technology is exactly that the unimolecular film on above-mentioned gas/liquid interface is transferred to solid surface and realized shifting continuously the technology of assembling.The LB film has thickness and can accurately control; Film-forming process does not need very high condition, and is simple to operation, characteristics such as molecules align high-sequential in the film; Therefore can be implemented in the assembling on the molecular level, all be with a wide range of applications in fields such as materialogy, optics, galvanochemistry and bionic.Carry out numerous researchs in recent years, related to aspects such as biological membrane human simulation, ultrathin membrane preparation, optics and sensor.The Halophiles purple membrane then is a kind of good nonlinear optics (NLO) material, and as a kind of typical photosensitive cell film, what wherein play nonlinear interaction is a kind of protein---and the bacteria rhodopsin molecule (bacteriorhodopsin, BR).BR on function and the structure with the animal retina on sensitization unit---the rhodopsin molecule is quite similar; Very responsive to illumination; After BR absorbs photon, can drive proton and make transmembrane movement; Self experience a series of intermediate states to return former primary state and accomplish a light and circulate, therefore crucial application prospect is arranged in optical information processing and optical computing technology.The sub-wavelength diameter micro-nano optical wave wire that draws out from general single mode fiber through the drawing by high temperature method; Surfaceness can be low to moderate the atom magnitude; Diameter is very even; Optical transmission loss is far smaller than the sub-wavelength yardstick optical waveguide of other types, can show characteristics such as strong laser field constraint, vast scale evanescent wave, high non-linearity, has potential using value at aspects such as micro-nano photonic device, photon sensing, nonlinear optics and atom waveguides.
Because in the existing report, the LB coating process all is on glass substrate, to accomplish, therefore sizes of substrate, shape and with the fusion of optical system on all have limitation.
Summary of the invention
Problem to be solved by this invention is: how to provide a kind of high non-linearity composite structure dimension to receive optical wave wire and preparation method thereof, this dimension is received optical wave wire has huge application potential in the research of pulse compression, wavelength conversion, biological photoswitch, optical storage, photon sensing and various micro-nano photonic device and bio-photon device.
Technical matters proposed by the invention is to solve like this: a kind of high-nonlinearity composite-structure micro-nano optical wave conducting wire is provided; It is characterized in that; Comprise that the silicon dioxide low-light is fine, its length is equal to or greater than 30 millimeters, and diameter is 0.4～8 micron; The surface deposits 1～100 layer of Halophiles purple membrane through the LB coating technique, and every layer of Halophiles purple membrane thickness is 5～20 nanometers; The fine two ends of said silicon dioxide low-light connect standard fiber through conical transition zone, are used to connect various optical instruments.
A kind of preparation method of high-nonlinearity composite-structure micro-nano optical wave conducting wire is characterized in that, comprises step:
1. utilizing diameter is that 0.4～8 micron, length are equal to, or greater than 30 millimeters silicon dioxide low-light fibre as substrate, is positioned in the parfacies;
2. make the Halophiles purple membrane molecule on parfacies surface constitute compact arranged unimolecular film; Silicon dioxide low-light fibre is vertically proposed from the parfacies liquid level; Under the effect of mould; Gas/liquid interface surface is transferred to the fine surface of silicon dioxide low-light continuously, constitutes one deck unimolecule Halophiles purple membrane LB film, and it is 5～20 nanometers that the fine proposition speed of control silicon dioxide low-light makes Halophiles purple membrane LB thickness;
3. 2. (N-1) inferior N layer Halophiles purple membrane, wherein 1≤N≤100 of obtaining of repeating step;
4. the 3. resulting silicon dioxide low-light of step is fine through conical transition zone connection standard fiber, be used to connect various optical instruments.
Beneficial effect of the present invention: the present invention utilize diameter be 1 micron silicon dioxide low-light fibre as substrate, on micro-nano optical wave wire surface, deposit the film of one deck Halophiles purple membrane through the LB coating technique, thickness is 5 nanometers.With big evanescent wave form transmission than row, evanescent wave and the interaction of molecules of Halophiles purple membrane in its surface transmission can produce high optical non-linear effect to light in the micro-nano optical wave wire.Compare with common silica fibre and common low-light fibre; This kind high non-linearity composite nano wire has higher optical non-linear effect, in the research of pulse compression, wavelength conversion, biological photoswitch, optical storage, photon sensing and various micro-nano photonic device and bio-photon device, bigger application potential is arranged.
The present invention proposes the LB coating technique is combined with the micro-nano optical wave wire of sub-wavelength diameter first; The good optical non-linear effect of Halophiles purple membrane combines through LB plated film mode with the fine same good optical nonlinearity characteristic of low-light; Obtain a kind of micro-nano optical wave wire of high non-linearity composite structure, the nonlinear optical characteristics of this waveguide wire will be greatly improved.The composite structure micro-nano optical wave wire of this high non-linearity has huge application potential in the research of pulse compression, wavelength conversion, biological photoswitch, optical storage, photon sensing and various micro-nano photonic device and micro-nano optoelectronic device.
Description of drawings
Fig. 1 is the structure diagram of high-nonlinearity composite-structure micro-nano optical wave conducting wire;
Fig. 2 is the LB film forming principle sketch of high-nonlinearity composite-structure micro-nano optical wave conducting wire;
Fig. 3 is a micro-nano optical wave wire LB coating process synoptic diagram
Fig. 4 is the coating apparatus sketch of high-nonlinearity composite-structure micro-nano optical wave conducting wire;
Fig. 5 is the optical non-linear effect sketch of composite structure micro-nano optical wave wire;
Wherein, 1, standard fiber, 2, Halophiles purple membrane overlay, 3, standard fiber; 4, the silicon dioxide low-light is fine, and 5, conical transition zone, 6, the Halophiles unimolecular layer, 7, grid; 8, parfacies, 9, spectrometer or oscillograph, 10, the micro-nano optical wave wire; 11, coating machine wall, 12, fiber clamp, 13, LB film unimolecular layer and deionized water.
Embodiment
Below in conjunction with accompanying drawing the present invention is further described:
As shown in Figure 1; The parameter of this kind high-nonlinearity composite-structure micro-nano optical wave conducting wire is following: comprise silicon dioxide low-light fine 4 and Halophiles purple membrane overlay 2; Halophiles purple membrane unimolecular film is deposited on the surface of micro-nano optical wave wire, and coating times is 100 times, promptly in 100 layers of Halophiles purple membrane of micro-nano optical wave wire surface deposition unimolecular film; Thickness is 500 nanometers, and the length of this segment structure should be not less than 30 millimeters.These high-nonlinearity composite-structure micro-nano optical wave conducting wire two ends connect standard fiber 1 and 3 through the conical transition zone 5 of silicon dioxide micro-nano optical wave wire, are used for linking to each other with various optical instruments.
The preparation principle of high linear composite structure micro-nano optical wave wire is as shown in Figure 2: under certain pressure; The Halophiles purple membrane molecule on parfacies surface constitutes compact arranged unimolecular film 6; Micro-nano optical wave wire 10 vertically proposes from liquid level with certain speed; Under the effect of mould, gas/liquid interface surface is transferred to the surface of micro-nano optical wave wire continuously, has constituted one deck unimolecule Halophiles purple membrane LB film.
Like Fig. 3 and shown in Figure 4; The preparation system structure comprises: standard fiber 1, grid (barrier) 7, deionized water (parfacies) 8, LB plated film groove 9, micro-nano optical wave wire 10, plated film horn (holder) 11, fiber clamp 12, LB film unimolecular layer and the deionized water (parfacies) 13 of silicon dioxide low-light fibre 4, conical transition zone 5, Halophiles purple membrane unimolecular layer 6, control mould.The basic process of preparation does; The low-light fibre vertically moves with certain speed; Because it is constant to have kept the mould of Halophiles purple membrane unimolecular layer, so when the low-light fibre passes liquid level, all can shift one deck purple membrane to micro-nano optical wave wire surface at every turn from gas/liquid surface.Software parameter is set, repeats 100 times, can obtain this kind high-nonlinearity composite-structure micro-nano optical wave conducting wire.
The preparation parameter of this composite structure micro-nano optical wave wire is following: used parfacies is a secondary deionized water 8 in the coating process, and resistivity is 18.25M Ω/cm, and temperature constant is at 20 degrees centigrade.The purple membrane dimethyl formamide solution of the 0.5mg/ml that configures is dropwise dripped to the parfacies surface, spread one hour, form Halophiles purple membrane unimolecular layer 6.Silicon dioxide micro-nano optical wave wire 1 is through spirit lamp thermoplastic general single mode fiber, and the diameter that slowly draws out then is 1.3 microns micro-nano optical wave wires with higher diameter homogeneity and surfaceness.Be placed on the fiber clamp 12 of LB coating system drawing good micro-nano optical wave wire.It is constant in 40mN that mould is set, and pull rate is 5mm/min, and coating times is 100 times.
Utilize a step high temperature drawing to produce 1 micron of diameter, the micro-nano optical wave wire that surface uniformity is good, the micro-nano optical wave wire is connected with standard single-mode fiber through the optical fiber conical transition zone, and optical fiber is positioned on the LB coating machine fiber clamp.The purple membrane dimethyl formamide solution of 0.05mg/ml is spread over parfacies (secondary deionized water) surface, and after waiting to volatilize 1 hour, control parfacies temperature stabilization can begin plated film at 20 ℃.The basic process of preparation does; The low-light fibre vertically moves with certain speed; Because it is constant to have kept the mould of Halophiles purple membrane unimolecular layer, so when the micro-nano optical wave wire passes liquid level, all can shift one deck purple membrane to micro-nano optical wave wire surface at every turn from gas/liquid surface.Software parameter is set, repeats 100 times, can obtain this kind high-nonlinearity composite-structure micro-nano optical wave conducting wire.Fig. 5 is the optical non-linear effect sketch of composite structure micro-nano optical wave wire
Above-mentioned practical implementation method is used for the apparatus of the present invention of explaining, rather than limits the invention, and in the protection domain of spirit of the present invention and claims, to any change of the present invention and change, all falls into protection scope of the present invention.
Claims (2)
1. a high-nonlinearity composite-structure micro-nano optical wave conducting wire is characterized in that, comprises that the silicon dioxide low-light is fine; Its length is equal to or greater than 30 millimeters; Diameter is 0.4～8 micron, and the surface deposits 1～100 layer of Halophiles purple membrane through the LB coating technique, and every layer of Halophiles purple membrane thickness is 5～20 nanometers; The fine two ends of said silicon dioxide low-light connect standard fiber through conical transition zone, are used to connect various optical instruments.
2. the preparation method of a high-nonlinearity composite-structure micro-nano optical wave conducting wire is characterized in that, may further comprise the steps:
1. utilizing diameter is that 0.4～8 micron, length are equal to, or greater than 30 millimeters silicon dioxide low-light fibre as substrate, is positioned in the parfacies;
2. make the Halophiles purple membrane molecule on parfacies surface constitute compact arranged unimolecular film; Silicon dioxide low-light fibre is vertically proposed from the parfacies liquid level; Under the effect of mould; Gas/liquid interface surface is transferred to the fine surface of silicon dioxide low-light continuously, constitutes one deck unimolecule Halophiles purple membrane LB film, and it is 5～20 nanometers that the fine proposition speed of control silicon dioxide low-light makes Halophiles purple membrane LB film thickness;
3. 2. (N-1) inferior N layer Halophiles purple membrane LB film, wherein 1≤N≤100 of obtaining of repeating step;
4. the 3. resulting silicon dioxide low-light of step is fine through conical transition zone connection standard fiber, be used to connect various optical instruments.
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| CN103645551B (en) * | 2013-12-18 | 2016-05-25 | 江苏大学 | A kind of micro-nano fiber assembly and manufacture method thereof |
| CN103954590A (en) * | 2014-04-30 | 2014-07-30 | 电子科技大学 | Micro optical fiber gas sensor covered by adopting graphene |
| CN109085680B (en) * | 2018-08-14 | 2019-12-31 | 浙江大学 | Micro-nano optical fiber packaging method based on mechanical tapering |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4321057A (en) * | 1979-09-20 | 1982-03-23 | Buckles Richard G | Method for quantitative analysis using optical fibers |
| US4887884A (en) * | 1989-02-23 | 1989-12-19 | Unisys Corporation | Capillary non-linear optical waveguide device |
| US5659010A (en) * | 1992-07-13 | 1997-08-19 | Fujitsu Limited | Nonlinear optical material, process of production of same, and nonlinear optical device and directional coupling type optical switch using same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS62221467A (en) * | 1986-03-20 | 1987-09-29 | Agency Of Ind Science & Technol | Method for preparing purple membrane-containing membrane |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4321057A (en) * | 1979-09-20 | 1982-03-23 | Buckles Richard G | Method for quantitative analysis using optical fibers |
| US4887884A (en) * | 1989-02-23 | 1989-12-19 | Unisys Corporation | Capillary non-linear optical waveguide device |
| US5659010A (en) * | 1992-07-13 | 1997-08-19 | Fujitsu Limited | Nonlinear optical material, process of production of same, and nonlinear optical device and directional coupling type optical switch using same |
Non-Patent Citations (1)
| Title |
|---|
| JP昭62-221467A 1987.09.29 |
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