CN105425322B - A kind of AOWC - Google Patents
A kind of AOWC Download PDFInfo
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- CN105425322B CN105425322B CN201510801641.1A CN201510801641A CN105425322B CN 105425322 B CN105425322 B CN 105425322B CN 201510801641 A CN201510801641 A CN 201510801641A CN 105425322 B CN105425322 B CN 105425322B
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- antenna
- circular loop
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- loop antenna
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/002—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of materials engineered to provide properties not available in nature, e.g. metamaterials
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/0102—Constructional details, not otherwise provided for in this subclass
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- Optics & Photonics (AREA)
- Nonlinear Science (AREA)
- Optical Communication System (AREA)
Abstract
The present invention relates to technical field of optical fiber communication, more particularly to a kind of AOWC, including：Dielectric layer；Antenna stack, the antenna stack is formed at the surface of the dielectric layer, and the antenna stack includes multiple antenna structure units of periodic arrangement；The antenna structure unit includes that the first breach circular loop antenna, the second breach circular loop antenna and section are foursquare square antenna；The first breach circular loop antenna and the second breach circular loop antenna are symmetricly set in the both sides of the square antenna, wherein, the first breach circular loop antenna and the second breach circular loop antenna are with any diagonal in the section as symmetry axis, and the breach of the first breach circular loop antenna is relative with the breach of the second breach circular loop antenna.The present invention realize can All Optical Wavelength Conversion function, be not only simple in structure, low cost, while also having widened the range of application of Meta Materials.
Description
Technical field
The present invention relates to technical field of optical fiber communication, more particularly to a kind of AOWC.
Background technology
Meta Materials (Metamaterial) are a kind of artificial extraordinary electromagnetic mediums, and it is super that it possesses that natural material do not have
Normal electromagnetic property.Meta Materials typically obtain negative dielectric constant, negative magnetic using multiple metal structure units of engineer
Conductance and negative refractive index, and these metal structure units size much smaller than electromagnetic wave wavelength.The performance of Meta Materials
In addition to relevant with the performance of composition material, the size, unit interphase interaction also with metal structure unit are closely related, because
This, these metal structure units are otherwise known as hyperonic atom or supermolecule.Most common Meta Materials are to build sub- ripple using metal
Periodic structure long obtains negative dielectric constant, negative magnetic conductivity and negative refractive index.Because Meta Materials have electromagnetism special
Exclusive-OR function, therefore with potential application, such as electromagnetism stealth, the perfect absorption of electromagnetic wave, super-resolution imaging and Meta Materials are logical
Letter antenna etc..Under outside signal stimulus, there is corresponding change in Meta Materials performance, so as to realize photoswitch, wavelength convert, light
The functions such as modulation, optical detection, apply in the fields such as optic communication, light sensing.
Wavelength shifter is the device from a wavelength convert to another wavelength, AOWC optical signal
It is the critical component in wavelength division multiplexed optical network and all optical networks.Wavelength shifter can mainly be divided by its operation principle
For：Optical electrical/light type wavelength shifter, phase dry type wavelength shifter and the wavelength shifter based on optical logic gate.At present, more
Ripe wavelength shifter is mainly the wavelength shifter of optical electrical/light type, and the wavelength shifter of optical electrical/light type is first by optical signal
Electric signal is converted into, after timed regeneration, the electric signal and clock signal of regeneration is produced, then with the electric signal to standard wave length's
Laser re-starts modulation, so as to realize wavelength convert.But, it is opaque to signal format and modulation rate, system liter
Level and range of application are limited.Phase dry type wavelength shifter and the wavelength shifter based on optical logic gate are then utilized respectively four ripples and mix
Frequently, the effect such as XGM, Cross-phase Modulation realizes wavelength convert, although can make up above-mentioned deficiency, but device
Cost of manufacture it is often higher, it has limitation using scope.
The content of the invention
The present invention solves wavelength shifter of the prior art to signal lattice by providing a kind of AOWC
Formula and modulation rate are opaque, the technical problem that system upgrade and range of application are limited.
A kind of AOWC is the embodiment of the invention provides, including：
Dielectric layer；
Antenna stack, the antenna stack is formed at the surface of the dielectric layer, and the antenna stack includes many of periodic arrangement
Individual antenna structure unit；
The antenna structure unit includes that the first breach circular loop antenna, the second breach circular loop antenna and section are foursquare
Square antenna；
The first breach circular loop antenna and the second breach circular loop antenna are symmetricly set in the two of the square antenna
Side, wherein, the first breach circular loop antenna and the second breach circular loop antenna are right with any diagonal in the section
Claim axle, the breach of the first breach circular loop antenna is relative with the breach of the second breach circular loop antenna.
Preferably, the square antenna is centrally located at the center of circle of the first breach circular loop antenna and second breach
The point midway of the circle center line connecting of circular loop antenna.
Preferably, the material of the dielectric layer is silica.
Preferably, the material of the antenna structure unit is metal.
Preferably, the metal is gold.
Preferably, the first knot that an antenna structure unit is constituted with the dielectric layer being located at immediately below it
The Aspect Ratio of structure is 2：1.
Preferably, the breach of the first breach circular loop antenna and the second breach circular loop antenna is annulus girth
1/4。
Preferably, the first breach circular loop antenna is identical with the second breach circular loop antenna.
One or more technical schemes in the embodiment of the present invention, at least have the following technical effect that or advantage：
The present invention sets antenna stack by dielectric layer surface, and multiple antennas of periodic arrangement are set in antenna stack
Construction unit, each antenna structure unit includes the first breach circular loop antenna, the second breach circular loop antenna and square antenna, works as pump
Pu light and detection light from after being incided on the AOWC of the application near the side of antenna stack, the full light wave of the application
The transmission spectrum of converter long changes, so that, change the transmissivity of the AOWC to detection light of the application, thus
Signal entrained by pump light is transferred on the detection light for transmiting, All Optical Wavelength Conversion function is realized, be not only simple in structure,
Low cost, while also having widened the range of application of Meta Materials.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Inventive embodiment, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
The accompanying drawing of offer obtains other accompanying drawings.
Fig. 1 is a kind of schematic diagram of AOWC in the embodiment of the present invention；
Fig. 2 is that antenna stack is projected to the floor map of first structure after dielectric layer in the embodiment of the present invention；
Fig. 3 is the transmission spectrum of AOWC in a specific embodiment in the embodiment of the present invention；
Fig. 4 is the transmission spectrum of the AOWC when there is pump light incident in the embodiment of the present invention.
Wherein, 1 is dielectric layer, and 2 is antenna stack, and 21 is the first breach circular loop antenna, and 22 is the second breach circular loop antenna,
23 is square antenna, and 3 is pump light, and 4 is detection light.
Specific embodiment
It is opaque to signal format and modulation rate to solve wavelength shifter of the prior art, system upgrade and application
The limited technical problem of scope, the present invention provides a kind of AOWC.
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
A part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
The embodiment of the present invention provides a kind of AOWC, and the AOWC carries out reality using Meta Materials
It is existing.As shown in figure 1, the AOWC is in the plane where the rectangular coordinate system set up with x-axis and y-axis, institute
Stating AOWC includes dielectric layer 1 and antenna stack 2, and antenna stack 2 is formed at the surface of dielectric layer 1, dielectric layer 1
Material be silica, the material of antenna stack 2 is metal, it is preferred that the metal material is gold.
In this application, multiple antenna structure units of antenna stack 2 including periodic arrangement, an antenna structure unit namely
One construction unit of Meta Materials, an antenna structure unit includes 21, second breach of a first breach circular loop antenna
Circular loop antenna 22 and a square antenna 23.Specifically, the first breach circular loop antenna 21 and the second breach circular loop antenna 22 are
Annulus metal antenna with a breach, square antenna 23 is foursquare metal derby, the thickness of annulus metal antenna for section
Thickness with metal derby is identical, namely antenna stack 2 thickness.
Antenna structure unit x-y plane projection as shown in Fig. 2 wherein, the first breach circular loop antenna 21 and second lacks
Mouthful circular loop antenna 22 is symmetricly set in the both sides of square antenna 23, wherein, the first breach circular loop antenna 21 and the second breach annulus
Antenna 22 with any diagonal of square section as symmetry axis, and, the breach and the second breach of the first breach circular loop antenna 21
The breach of circular loop antenna 22 is relative.
Further, square antenna 23 is centrally located at the center of circle and the second breach circular loop antenna of the first breach circular loop antenna 21
The point midway of 22 circle center line connecting, i.e. after antenna stack 2 is projected into dielectric layer 1, the center of square antenna 23, first lack
The center of circle of mouth circular loop antenna 21 and the center of circle of the second breach circular loop antenna 22 are on the same line.One antenna structure unit and position
The Aspect Ratio of the first structure that the dielectric layer 1 immediately below the antenna structure unit is constituted is 2：1, for example, the first knot
A width of a of structure, then, and a length of 2a of first structure.In addition, the first breach circular loop antenna 21 and the phase of the second breach circular loop antenna 22
Together, be breach is annulus girth 1/4 circular loop antenna, the internal diameter of two breach circular loop antennas is ri, two breach circles
The external diameter of loop antenna is ro, the length of side of square section is b.
For the AOWC of the application, pump light 3 and detection light 4 are provided with, incident pump light 3 is carried
Signal, incidence detection light 4 is the continuous light for not carrying signal.When the incident intensity of pump light 3 changes, the full light wave
The resonant frequency of converter long produces frequency displacement, i.e. the transmission spectrum of the AOWC changes, so as to change described
To detecting the transmissivity of light 4, the transmitted light intensity for detecting light 4 changes AOWC, it is possible thereby to by the institute of pump light 3
The signal of carrying is transferred on the detection light 4 for transmiting, and realizes All Optical Wavelength Conversion function.
Specifically, under by x-axis, y-axis and z-axis form right angle coordinate system, the incident direction of pump light 3 and detection light 4
Along the negative direction of z-axis, the incident light direction of an electric field of pump light 3 and detection light 4 is parallel with y-axis, i.e. the electric field intensity of incident light
Along y-axis, as shown in Figure 1.According to knowable to Meta Materials and metal plasma electromagentic resonance are theoretical, the material property of composition Meta Materials,
And the geometry and dimensional parameters of construction unit, together decide on the electromagentic resonance wavelength X of Meta Materialsr.Work as external incident
The wavelength of electromagnetic wave is close to λrWhen, the free electron in metal can occur strong local plasmon resonance, absorb a large amount of electromagnetism
The energy of ripple, causes the wavelength and its neighbouring electromagnetic wave emergent power drastically to decline.Due to the antenna structure list in the application
Unit is made up of two kinds of figures, i.e. metal antenna includes two kinds of fractal structures, wherein, first fractal structure is that two mirror images are put
Two 3/4 circular loop antennas putting, second fractal structure are that section is foursquare metal derby.Therefore, the two fractal structures
Two resonant wavelengths, one of resonant wavelength can be produced to be determined by two 3/4 annulus that two mirror images are placed, another is total to
Vibration wave is long to be determined by metal derby.
Referring to Fig. 3, the transmission spectrum of Meta Materials is obtained by analogue simulation, the targeted relevant dimensional parameters of the emulation are such as
Under：The thickness t of dielectric layer 11It is 60nm, the thickness t of antenna stack 22It is 30nm, a wide of above-mentioned first structure is 200nm, above-mentioned
The 2a long of first structure is 400nm, and the internal diameter of two breach circular loop antennas is riBe 60nm, two breach circular loop antennas it is outer
Footpath is roIt is 90nm, the side length b of square section is 90nm.As seen from Figure 3, Meta Materials are the first wave of 660nm in wavelength
To have stronger resonance at the second wave length of 730nm, the transmissivity in relevant position is respectively 0.028 He to long and wavelength
0.038.Wherein, the resonance at 660nm wavelength is that as caused by first fractal structure, the resonance at 730nm wavelength is then
Caused by second fractal structure.
In All Optical Wavelength Conversion, it is related to two-beam, the first beam just pump light 3, incident pump light 3 carries letter
Number, the second beam just detects light 4, and incidence detection light 4 is the continuous light for not carrying signal.The function of wavelength convert seek to by
Signal in pump light 3 is transformed into the detection light 4 of output up, that is, the detection light 4 for making output is no longer continuous light, but
The information of incident pump light 3 in carrying.In this application, first wave length and second wave length are turned as the all-optical wave-length
The pump light 3 and detection light 4 of parallel operation.
Further, pump light 3 and detection light 4 from described AOWC the same side vertical incidence, i.e., along z-axis
Negative direction.Then, pump light 3 and detection light 4 pass sequentially through the AOWC, finally from dielectric layer 1 this
Side transmits.
In the case of without the incidence of pump light 3, i.e., when pump light 3 is " 0 ", the detection wavelength of light 4 absorbs in electromagentic resonance
Peak value near, in other words now detection light 4 have less transmissivity, now its transmissivity is about as shown in Figure 3
0.038, the detection light 4 for now exporting is " 0 ".
In the case that Fig. 4 has given the incidence of pump light 3, i.e., when pump light 3 is " 1 ", the AOWC
Transmission spectrum.Once pump light 3 is unlocked when incidence, and with the increase of the light intensity of incident pump light 3, it can make described complete
The wavelength that optical transponder unit occurs electromagentic resonance changes with intensity, and that is to say makes its transmission spectrum change, resonance
The position at peak is no longer the position where detecting the wavelength of light 4, i.e. 730nm.The now transmitance increase of detection light 4, its transmissivity
0.79 is increased to by original 0.038.Because stronger incident pump light 3 causes the electromagentic resonance of the AOWC
Absorb and frequency displacement occurs, the degree that detection light 4 undergoes Meta Materials absorption has also weakened.Therefore, now the transmissivity of detection light 4 shows
Write and improve, the luminous power of the detection output of light 4 is larger, and the detection light 4 for now exporting is " 1 ".
In sum, when pump light 3 is " 0 ", that is, luminous power be zero or the pump light of very little 3 incide it is described complete
When on optical transponder unit, the luminous power very little of the detection output of light 4, the detection light 4 for now exporting is " 0 ".And work as pump light 3 and be
When " 1 ", that is, the larger pump light 3 of power is incided when on Meta Materials, and the luminous power of the detection output of light 4 is larger, now defeated
The detection light 4 for going out is " 1 ".Therefore, the signal of pump light 3 is carried in the detection light 4 of output, All Optical Wavelength Conversion work(is realized
Energy.
Because the AOWC of the invention is only with the Meta Materials based on plane manufacture craft, so as to have
There are simple structure, manufacture craft simple and the characteristics of low manufacture cost.
In addition, the AOWC operation wavelength of the invention can be allowed to move to according to size scaling effect
Set any wavelength.For example, 1.3 microns needed for optical communicating waveband and 1.5 micron wavebands, then according to the size of Meta Materials
Scaling effect, is suitably increased construction unit size, can be achieved with the wavelength convert of optical communicating waveband.
Technical scheme in above-mentioned the embodiment of the present application, at least has the following technical effect that or advantage：
The present invention sets antenna stack by dielectric layer surface, and multiple antennas of periodic arrangement are set in antenna stack
Construction unit, each antenna structure unit includes the first breach circular loop antenna, the second breach circular loop antenna and square antenna, works as pump
Pu light and detection light from after being incided on the AOWC of the application near the side of antenna stack, the full light wave of the application
The transmission spectrum of converter long changes, so that change the transmissivity of the AOWC to detection light of the application, thus
Signal entrained by pump light is transferred on the detection light for transmiting, All Optical Wavelength Conversion function is realized, be not only simple in structure,
Low cost, while also having widened the range of application of Meta Materials.
, but those skilled in the art once know basic creation although preferred embodiments of the present invention have been described
Property concept, then can make other change and modification to these embodiments.So, appended claims are intended to be construed to include excellent
Select embodiment and fall into having altered and changing for the scope of the invention.
Obviously, those skilled in the art can carry out various changes and modification without deviating from essence of the invention to the present invention
God and scope.So, if these modifications of the invention and modification belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising these changes and modification.
Claims (8)
1. a kind of AOWC, it is characterised in that including：
Dielectric layer；
Antenna stack, the antenna stack is formed at the surface of the dielectric layer, and the antenna stack includes multiple days of periodic arrangement
Cable architecture unit；
The antenna structure unit includes that the first breach circular loop antenna, the second breach circular loop antenna and section are foursquare square
Antenna；
The first breach circular loop antenna and the second breach circular loop antenna are symmetricly set in the both sides of the square antenna, its
In, the first breach circular loop antenna and the second breach circular loop antenna with any diagonal in the section as symmetry axis,
The breach of the first breach circular loop antenna is relative with the breach of the second breach circular loop antenna.
2. AOWC as claimed in claim 1, it is characterised in that the square antenna is centrally located at described
The point midway of the circle center line connecting of the center of circle of one breach circular loop antenna and the second breach circular loop antenna.
3. AOWC as claimed in claim 1, it is characterised in that the material of the dielectric layer is titanium dioxide
Silicon.
4. AOWC as claimed in claim 1, it is characterised in that the material of the antenna structure unit is gold
Category.
5. AOWC as claimed in claim 4, it is characterised in that the metal is gold.
6. AOWC as claimed in claim 1, it is characterised in that for including the first breach annulus
For antenna, the second breach circular loop antenna and the square antenna antenna structure unit, institute
The Aspect Ratio for stating the first structure that antenna structure unit is constituted with the dielectric layer immediately below it is 2：1.
7. AOWC as claimed in claim 1, it is characterised in that the first breach circular loop antenna and described
The breach of two breach circular loop antennas is the 1/4 of annulus girth.
8. AOWC as claimed in claim 7, it is characterised in that the first breach circular loop antenna and described
Two breach circular loop antennas are identical.
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| CN201510801641.1A CN105425322B (en) | 2015-11-19 | 2015-11-19 | A kind of AOWC |
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| CN201510801641.1A CN105425322B (en) | 2015-11-19 | 2015-11-19 | A kind of AOWC |
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| CN105425322B true CN105425322B (en) | 2017-06-16 |
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| CN2651948Y (en) * | 2003-05-28 | 2004-10-27 | 京信通信系统（广州）有限公司 | Wide-frequency band antenna unit |
| CN102074801A (en) * | 2011-01-06 | 2011-05-25 | 西北工业大学 | Ferroelectric resonator cladding-based microstrip antenna |
| CN102694277A (en) * | 2012-06-15 | 2012-09-26 | 中国电子科技集团公司第三十六研究所 | Multifrequency directional-diagram reconfigurable antenna based on double-open resonant ring |
| CN103135151A (en) * | 2013-02-22 | 2013-06-05 | 华中科技大学 | Composite structure based on metamaterials and semiconductor low dimension quantum materials and application thereof |
| CN204029994U (en) * | 2014-07-23 | 2014-12-17 | 广州桑瑞通信设备有限公司 | The compound oscillator antenna for base station of dual polarization |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1741160A1 (en) * | 2004-04-19 | 2007-01-10 | Southern Methodist University | Microstrip array antenna |
| DK1969391T3 (en) * | 2005-12-12 | 2014-10-27 | Irina Puscasu | THINFILM EMITTER-ABSORBER FITTING AND PROCEDURE |
-
2015
- 2015-11-19 CN CN201510801641.1A patent/CN105425322B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2651948Y (en) * | 2003-05-28 | 2004-10-27 | 京信通信系统（广州）有限公司 | Wide-frequency band antenna unit |
| CN102074801A (en) * | 2011-01-06 | 2011-05-25 | 西北工业大学 | Ferroelectric resonator cladding-based microstrip antenna |
| CN102694277A (en) * | 2012-06-15 | 2012-09-26 | 中国电子科技集团公司第三十六研究所 | Multifrequency directional-diagram reconfigurable antenna based on double-open resonant ring |
| CN103135151A (en) * | 2013-02-22 | 2013-06-05 | 华中科技大学 | Composite structure based on metamaterials and semiconductor low dimension quantum materials and application thereof |
| CN204029994U (en) * | 2014-07-23 | 2014-12-17 | 广州桑瑞通信设备有限公司 | The compound oscillator antenna for base station of dual polarization |
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| CN105425322A (en) | 2016-03-23 |
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