CN1888941A - Plate type metal heterogeneous structural nano optical wave guide device - Google Patents
Plate type metal heterogeneous structural nano optical wave guide device Download PDFInfo
- Publication number
- CN1888941A CN1888941A CN 200610019673 CN200610019673A CN1888941A CN 1888941 A CN1888941 A CN 1888941A CN 200610019673 CN200610019673 CN 200610019673 CN 200610019673 A CN200610019673 A CN 200610019673A CN 1888941 A CN1888941 A CN 1888941A
- Authority
- CN
- China
- Prior art keywords
- metal
- plate type
- guide device
- wave guide
- optical wave
- 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
Images
Abstract
A flat type metal heterogeneity structure nanometer optical waveguide parts, the main point is: consists of two metals with different constants transmitting by the SPP (solar photometry probe), the metal with high constant enchases in the metal with low constant. The advantage of the invention is that can transmit the light beam that the diameter breaches the nanometer size of the diffracting high-point, thereby repots the traditional technology and structure of the flat integration optical waveguide to the nanometer photon integration loop.
Description
Technical field
The present invention relates to a kind of plate type metal heterogeneous structural nano optical wave guide device, in particular for realizing the plate type metal heterogeneous structural nano optical wave guide device of nano-photon integrated network.
Background technology
The planar light waveguide device is the basis of present integrated optics.Be subjected to the restriction of diffraction effect, the diameter of optical waveguide generally can only be in the magnitude of the wavelength size that is not less than the transmission light wave, and this is a restriction greatly to the integrated level that improves integrated optical circuit.For reducing waveguide diameter, the most representative method is at present, converts metal surface excited surface plasmon ripple (SPP) to by transmitting light wave, realizes the nanometer waveguide of beam diameter about 100 nanometers.As, the metal nanometer line waveguide
[1], the metal nanoparticle Waveguide array
[2], the metal narrow slit wave-guide
[3], and V-type trench metal waveguide
[4]Deng.What wherein optical energy transmission efficiency was higher mainly is back two class waveguides.Their basic functional principle is the characteristics of utilizing the latent dead electricity magnetic signature of SPP and trending towards propagating in low phase velocity district.Because in the more little interval of the cross-sectional dimension of metal construction, the propagation phase velocity of SPP is more little.Therefore, SPP will trend towards at the less interval propagation of cross-sectional dimension, thereby the waveguide scope that energy of electromagnetic field can be limited in nanoscale is propagated.Here it is above-mentioned metal narrow slit wave-guide
[3]With metal V-type plough groove waveguide
[4]On the other hand, because the SPP propagation characteristic is not only relevant with the geometrical property of metal construction, prior also relevant with the dielectric property of metal material itself and adjacent dielectric substance thereof.Thus, 2004, the researchist proposed a kind of 3-dimensional metal heterogeneous structural nano narrow slit wave-guide of realizing nano-focusing
[5]But above-mentioned various waveguide all is that three-dimensional structure is (referring to Fig. 1～Fig. 3), be not easy to realize dull and stereotyped integrated functionality.List of references:
[1]J.Takahara?et?al，Opt.Lett.22，475(1997).
[2]S.A.Maier?et?al，Nature?Mater.2，229(2003).
[3]K.Tanaka?et?al，Appl.Phys.Lett.82，1158(2003).
[4]P.F.D.Pile?et?al，Opt.Lett.，29，1069(2004)；D.K.Gramotnev?etal，Appl.Phys.Lett.85，6323(2004)；S.I.Bozhevolnyi?et?al，Phys.Rev.Lett.95.046802(2005).
[5]B.Wang?and?G.P.Wang，Appl.Phys.Lett.，85，3599(2004).
Summary of the invention
The object of the present invention is to provide a kind of plate type metal heterogeneous structural nano optical wave guide device, it can make the transmitting beam diameter propagate at the nanoscale of breaking through diffraction limit, thereby, be transplanted to the nano-photon integrated circuit with technology and the structure in traditional dull and stereotyped integrated light guide.
Technical scheme of the present invention is: a kind of plate type metal heterogeneous structural nano optical wave guide device, and its distinctive feature is: the two kind metal materials different by the SPP propagation constant constitute, and the high damascene of propagation constant is in the low metal of propagation constant.
And, the rectangular strip of the metal that the SPP propagation constant is high.
And described metal is gold, silver, aluminium, wherein, gold or the metal of silver for embedding, aluminium is the metal that is embedded into.
And the width of the rectangular strip metal of described embedding is not more than 150nm.
Because the propagation phase velocity difference of SPP is big more, then the light wave diameter of section can be more little.Therefore, the present invention utilizes SPP to have the characteristics of bigger propagation phase velocity difference simultaneously on different waveguide cross sectional dimensions, different dielectric cladding material and thickness and different metal surface (as gold, silver, aluminium etc.), and realization has the plate nano optical wave guide of the beam cross section of nanoscale.Based on this imagination, we prove by digital simulation, embed the identical but metal silverskin of width w=130nm of thickness in aluminium film, and then at aluminium film and silverskin surface coverage one deck thickness h=100nm, (specific inductive capacity is ε in refractive index n=1.5
1=n
2) dielectric film (structure such as Fig. 3), when lambda1-wavelength λ=539nm, can obtain the beam cross section size and be 150nm * 37nm (0.28 λ * 0.069 λ), the nanometer waveguide of the about 2 μ m of transmission range (1.8 μ m).Compare based on the nanometer guide technology of SPP with existing, this structure is specially adapted to technology and structure in traditional dull and stereotyped integrated light guide are transplanted to the nano-photon integrated circuit.
Major technique means and effect: (1) utilizes SPP can be confined to the characteristics of very little space scale scope by light wave being converted to the SPP that metal-dielectric surface is propagated, and overcomes the shortcoming that conventional light conducting waveguide is subjected to the restriction of Rayleigh diffraction limit.When (2) utilizing the SPP transmission, have the advantages that to trend towards in the propagation of low phase velocity district, optimal design makes the transmitting beam diameter propagate at the nanoscale of breaking through diffraction limit by the nano-heterogeneous structure waveguide with different waveguide cross sectional dimensions and different dielectric cladding materials and thickness that different metal (as gold, silver, aluminium etc.) constitutes.
Description of drawings
Fig. 1 is the stereographic map of signal V-type trench metal of the prior art waveguide.
Fig. 2 is the existing 3-dimensional metal heterogeneous structural nano narrow slit wave-guide stereographic map of signal.
Fig. 3 is the existing three-dimensional homogeneity metal construction nano slit waveguide stereographic map of signal.
Fig. 4 is the stereographic map that signal the present invention constitutes.
Embodiment
Referring to Fig. 1～Fig. 4, wherein: Fig. 1: h is the degree of depth of V-type groove, and θ is the subtended angle of V-type groove, and arrow is represented the incident direction of light.Fig. 2: aluminium 1, silver 2, medium 3, W is a slit width, L represents waveguide length.Fig. 3: metal 4, w
1And w
2Be respectively different interval slit widths, h is the height of guided wave district, center slit, and L is a waveguide length.Fig. 4: dielectric 5, aluminium 6, silver or gold 7, aluminium 8, ε
1, ε
2, ε
3Be respectively the relative dielectric constant of dielectric, metallic aluminium, silver (or gold), h is the thickness of dielectric layer, and d is the thickness of metal film, and w is for embedding the width of the silver-colored waveguide in the aluminium waveguide.
The present invention record be a kind of plate type metal heterogeneous structural nano optical wave guide device, the two kind metal materials different by the SPP propagation constant constitute, the high damascene of propagation constant is in the low metal of propagation constant.
Further technical scheme can be: the rectangular strip of the metal that the SPP propagation constant is high.
Further technical scheme can also be: described metal is gold 7, silver 7, aluminium 6,8, wherein, and gold 7 or the metal of silver 7, the metal of aluminium 6,8 for being embedded into for embedding.
For realizing the transmission of nanoscale optical waveguide, the width of the rectangular strip metal of described embedding generally is not more than 150nm.
By light wave being converted to the SPP that metal-dielectric surface is propagated, utilize SPP can be confined to the characteristics of very little space scale scope, overcome the shortcoming that conventional light conducting waveguide is subjected to the restriction of Rayleigh diffraction limit.Simultaneously, utilize SPP on different geometries, different dielectric 5 cladding materials, different metal surface, to have different propagation phase velocities, and trend towards propagating in low phase velocity district, and SPP phase velocity difference is big more, the beam cross section diameter can be more little characteristics, realize the propagation of light wave in plate type metal heterogeneous structural nano optical wave guide.In existing metal material, the propagation constant of SPP in silver 7, gold 7, aluminium 6,8 waveguides successively decreased successively, increases progressively successively thereby propagate phase velocity.Therefore, the present invention is based on existing metal material, the nano heterogeneous waveguiding structure of design plate type metal, silver 7 or golden 7 films are embedded in aluminium 6, (see figure 4) in the middle of 8 films, optimize the geometric parameter of waveguiding structure, improve the propagation phase velocity difference of SPP, make incident light wave energy unattended station be limited to SPP and propagate the less zone of phase velocity (silver or golden film surface) in zones of different.For example, when argent 7 films of w=130nm are embedded in aluminium 6, in 8 films, overlayer (dielectric 5) thickness h=100nm, refractive index n=1.5, during lambda1-wavelength λ=539nm, the beam cross section size be can obtain and 150nm * 37nm (0.28 λ * 0.069 λ), the nanometer guide properties of the about 2 μ m of transmission range (1.8 μ m) are.Use this structure, can the dull and stereotyped nanometer light of easier realization integrated.
Main application of the present invention: nanometer photo-coupler, high density data storage, nano-photon integrated (nano optical wave guide device), near field optic (preparation of nano-probe etc.), biology, chemical sensitisation, nanometer quantized system (quantum dot, quantum line etc.) control, light tweezer (capture of particles).
Claims (5)
1. plate type metal heterogeneous structural nano optical wave guide device, it is characterized in that: the two kind metal materials different by the SPP propagation constant constitute, and the high damascene of propagation constant is in the low metal of propagation constant.
2. plate type metal heterogeneous structural nano optical wave guide device according to claim 1 is characterized in that: the rectangular strip of the metal that the SPP propagation constant is high.
3. plate type metal heterogeneous structural nano optical wave guide device according to claim 1 and 2 is characterized in that: described metal is gold, silver, aluminium, wherein, gold or the metal of silver for embedding, aluminium is the metal that is embedded into.
4. plate type metal heterogeneous structural nano optical wave guide device according to claim 2 is characterized in that: the width of the rectangular strip metal of described embedding is not more than 150nm.
5. plate type metal heterogeneous structural nano optical wave guide device according to claim 3 is characterized in that: the width of the rectangular strip metal of described embedding is not more than 150nm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610019673 CN1888941A (en) | 2006-07-20 | 2006-07-20 | Plate type metal heterogeneous structural nano optical wave guide device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610019673 CN1888941A (en) | 2006-07-20 | 2006-07-20 | Plate type metal heterogeneous structural nano optical wave guide device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1888941A true CN1888941A (en) | 2007-01-03 |
Family
ID=37578227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610019673 Pending CN1888941A (en) | 2006-07-20 | 2006-07-20 | Plate type metal heterogeneous structural nano optical wave guide device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1888941A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102445732A (en) * | 2012-01-05 | 2012-05-09 | 浙江大学 | Multi-beam optical tweezers based on planar optical waveguide |
-
2006
- 2006-07-20 CN CN 200610019673 patent/CN1888941A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102445732A (en) * | 2012-01-05 | 2012-05-09 | 浙江大学 | Multi-beam optical tweezers based on planar optical waveguide |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Zhang et al. | Surface plasmon polaritons: physics and applications | |
| Atwater et al. | The new “p–n junction”: plasmonics enables photonic access to the nanoworld | |
| Gong et al. | Photonic crystals: principles and applications | |
| Decoopman et al. | Photonic crystal lens: from negative refraction and negative index to negative permittivity and permeability | |
| Veronis et al. | Modes of subwavelength plasmonic slot waveguides | |
| Krasavin et al. | Passive photonic elements based on dielectric-loaded surface plasmon polariton waveguides | |
| Steinberger et al. | Dielectric stripes on gold as surface plasmon waveguides | |
| Maier et al. | Terahertz pulse propagation using plasmon-polariton-like surface modes on structured conductive surfaces | |
| Chutinan et al. | Diffractionless flow of light in two-and three-dimensional photonic band gap heterostructures: Theory, design rules, and simulations | |
| CN109030415B (en) | Refractive index sensor based on double Fano resonance | |
| CN205608219U (en) | Electromagnetic wave direct transmission device | |
| Dickson et al. | Hyperbolic polaritonic crystals based on nanostructured nanorod metamaterials | |
| CA2842449A1 (en) | Optical waveguide having all-dielectric, anisotropic metamaterial cladding and light confining method achieved using metamaterial clad optical waveguide | |
| Sánchez-Gil et al. | Surface-plasmon polariton scattering from a finite array of nanogrooves∕ ridges: efficient mirrors | |
| Schwartz et al. | Waveguiding in air by total external reflection from ultralow index metamaterials | |
| Balci et al. | Slowing surface plasmon polaritons on plasmonic coupled cavities by tuning grating grooves | |
| Tajik et al. | Investigating extraordinary optical transmission and sensing performance through periodic bilayer magneto-plasmonic structure | |
| Huang et al. | Plasmonics: manipulating light at the subwavelength scale | |
| CN1888941A (en) | Plate type metal heterogeneous structural nano optical wave guide device | |
| Regan et al. | Equifrequency curve dispersion in dielectric-loaded plasmonic crystals | |
| Wang et al. | Planar metal heterostructures for nanoplasmonic waveguides | |
| CN105467517B (en) | Surface plasma waveguide based on ultra-strong light constraint of sub-wavelength metal V groove | |
| Sheng et al. | Classical wave localization and spectral gap materials | |
| CN102590938A (en) | Multilayer mixed surface plasmon polariton optical waveguide | |
| Entezar et al. | Localized waves at the surface of a single-negative periodic multilayer structure |
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 |