CN106200026A - The controlled unidirectional waveguide of arbitrarily turning round of the No leakage low damage magneto-optic space fast mould of magnetic surface - Google Patents

The controlled unidirectional waveguide of arbitrarily turning round of the No leakage low damage magneto-optic space fast mould of magnetic surface Download PDF

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Publication number
CN106200026A
CN106200026A CN201610796510.3A CN201610796510A CN106200026A CN 106200026 A CN106200026 A CN 106200026A CN 201610796510 A CN201610796510 A CN 201610796510A CN 106200026 A CN106200026 A CN 106200026A
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magneto
optic
turning round
waveguide
controlled
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CN106200026B (en
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欧阳征标
郑耀贤
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Shenzhen University
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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
    • G02B6/122—Basic optical elements, e.g. light-guiding paths
    • G02B6/125—Bends, branchings or intersections
    • 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 
    • G02F1/09—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  based on magneto-optical elements, e.g. exhibiting Faraday effect
    • G02F1/095—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  based on magneto-optical elements, e.g. exhibiting Faraday effect in an optical waveguide structure

Abstract

The invention discloses a kind of No leakage low damage magneto-optic controlled unidirectional waveguide of turning round of space magnetic surface fast mould any direction, it includes a light input end mouth (1), an optical output port (2), two magneto-optic material layer (3,4), a dielectric layer (5), four suctions ripple layer (6,7,8,9) and two rightabout bias magnetic fields, and direction is controlled；Magneto-optic material layer (3,4) and dielectric layer (5) are a three-decker fiber waveguide, and three-decker is arbitrarily angled Curved, and at magneto-optic material layer, (3,4) are provided with the bias magnetic field that both direction is contrary, and direction is controlled；Space between magneto-optic material layer (3,4) is dielectric layer (5), and the port (1) of unidirectional waveguide of turning round is light input end mouth, and its port (2) is optical output port；Dielectric layer (5) is divided into toroidal in waveguide bends；Magneto-optic material layer is magnetic surface fast wave with the surface of dielectric layer (5).Present configuration is simple, efficiency of transmission is high, is suitable for extensive light path integrated.

Description

The controlled unidirectional waveguide of arbitrarily turning round of the No leakage low damage magneto-optic space fast mould of magnetic surface
Technical field
The present invention relates to a kind of magneto-optic memory technique, surface wave and optical diode, particularly relate to a kind of low damage magneto-optic space magnetic table The controlled unidirectional waveguide of arbitrarily turning round of the fast mould in face.
Background technology
Waveguide of turning round is a kind of optical device as conversion light path, and it occupies consequence in fiber waveguide device. Due to the change of direction of beam propagation in fiber waveguide, beam Propagation axial displacement and the needs reducing device volume, in fiber waveguide Bending is required.Waveguide bend can cause waveguide material change of optical characteristics distribution on the transmission direction of light so that turns Waveguide bend possesses higher loss.Waveguide field of turning round is studied the most widely, and wherein the waveguide of turning round of arc Changing Direction Type is current The main contents studied in this respect.Even if being such waveguide, its existing bending loss and transition loss are still Seriously constrain efficiency of transmission.In addition fault of construction etc. also can bring otherwise loss to waveguide.
Optical diode and isolator are a kind of the optics allowing light to propagate toward a direction, and being applied to prevention need not The light feedback wanted.Traditional optical diode and the major component of isolator are Faraday polarization apparatus, apply Faraday effect (magneto-optic Effect) as its operation principle.Traditional faraday isolator is made up of the polarizer, Faraday polarization apparatus and analyzer, this Device architecture is complicated, method be generally applied in the photosystem of free space.For integrated optical circuit, the Integrated Light device such as optical fiber or waveguide Part is all unpolarized maintenance system, can cause the loss of the angle of polarization, thus inapplicable faraday isolator.
Summary of the invention
It is an object of the invention to overcome weak point of the prior art, it is provided that a kind of simple in construction is effective, low-loss, light Efficiency of transmission is high, and volume is little, it is simple to the controlled unidirectional waveguide of arbitrarily turning round of the integrated No leakage low damage magneto-optic space fast mould of magnetic surface.
The purpose of the present invention is achieved by following technical proposals.
The fast mould of magnetic surface controlled unidirectional waveguide of arbitrarily turning round in No leakage of the present invention low damage magneto-optic space includes a light input 1, optical output port of port, 3,4, dielectric layer of 2, two magneto-optic material layer 5, four inhales 6,7,8,9 and two phase of ripple layer Reciprocal bias magnetic field, and direction is controlled；Described magneto-optic material layer 3,4 and dielectric layer 5 are a three-decker fiber waveguide, institute Stating three-decker is arbitrarily angled Curved, and at described magneto-optic material layer, 3,4 are provided with the bias magnetic field that both direction is contrary, And direction is controlled；Space between described magneto-optic material layer 3,4 is dielectric layer 5, and the port 1 of described unidirectional waveguide of turning round inputs for light Port, its port 2 is optical output port；Described dielectric layer 5 is divided into toroidal in waveguide bends；Described magneto-optic material layer with The surface of dielectric layer 5 is magnetic surface fast wave.
Optical diode and isolator are made up of magneto-optic material layer 3,4 and dielectric layer 5.
Described magneto-optic memory technique is magneto-optic glass or various rare earth doped garnet and rare earth-transition metal alloy The materials such as thin film.
Described magneto-optic material layer 3,4 and dielectric layer 5 are by arbitrarily angled Curved and light input end mouth 1 and optical output port 2 connect.
Described dielectric layer is the plastics that vacuum, air, silicon dioxide or operating wave are transparent.
Described three-decker is flat construction.
Described arbitrarily angled Curved is 30 degree of shapes of turning round, 45 degree of shapes of turning round, 60 degree of shapes of turning round, 90 degree of shapes of turning round Shape, 120 degree of shapes of turning round, 135 degree of shapes of turning round, 150 degree of turn round shape or 180 degree of shapes of turning round.
Described suction ripple layer 6,7,8,9 is identical or different absorbing material；Described absorbing material is polyurethane, graphite, stone Ink alkene, white carbon black, carbon fiber epoxy mixture, graphite thermal plastic material mixture, boron fibre epoxy resin mixture, graphite Fibrous epoxy resin mixture, epoxy polysulfide, silicone rubber, urethane, fluoroelastomer, polyether-ether-ketone, polyether sulfone, polyarylsulfone (PAS) or poly- Aziridine.
Described suction ripple layer 6,7,8,9 distance with described flat wave-guide surface respectively is 1/4 to 1/2 wavelength；Described suction The thickness of ripple layer 6,7,8,9 is respectively not less than 1/4 wavelength.
Described bias magnetic field is produced by sense of current controlled electromagnet or permanent magnet, and permanent magnet can rotate；Described side Waveguide is turned round or unidirectional waveguide of turning round is made up of the waveguide of magneto-optic space to controlled；The mode of operation of described unidirectional waveguide of turning round is TE Pattern.
Present invention is suitably applied to extensive light path integrated, be with a wide range of applications.It compared with prior art has Following good effect.
1. simple in construction, it is simple to realize.
2. volume is little, it is simple to integrated.
3. surface magnetic wave possesses the immunological characteristic to fault of construction, has ultra-low loss, superelevation efficiency of transmission, extensively should Use in the design of various fiber waveguide.
Accompanying drawing explanation
Fig. 1 is the structure chart of the controlled unidirectional waveguide of arbitrarily turning round of the No leakage low damage magneto-optic space fast mould of magnetic surface.
In figure: light input end mouth 1 optical output port 2 first magneto-optic material layer 3 second magneto-optic material layer 4 dielectric layer 5 First inhales ripple layer 6 second inhales ripple layer 7 second suction ripple layer 8 second suction ripple layer 9 bias magnetic field ⊙ H0(outward) bias magnetic field H0 (inner) thickness of dielectric layers w inhales distance w between ripple layer and waveguide1The outer arc radius of the inner arc radius r annulus of annulus It is then r+w.
Fig. 2 is the first work of the controlled unidirectional waveguide conducting of arbitrarily turning round of the No leakage low damage magneto-optic space fast mould of magnetic surface Schematic diagram.
Fig. 3 is the second work of the controlled unidirectional waveguide conducting of arbitrarily turning round of the No leakage low damage magneto-optic space fast mould of magnetic surface Schematic diagram.
Fig. 4 is the first embodiment that forward and reverse efficiency of transmission of the unidirectional waveguide of turning round in magneto-optic space changes with frequency of light wave Curve chart.
Fig. 5 is the second embodiment that forward and reverse efficiency of transmission of the unidirectional waveguide of turning round in magneto-optic space changes with frequency of light wave Curve chart.
Fig. 6 is the third embodiment that forward and reverse efficiency of transmission of the unidirectional waveguide of turning round in magneto-optic space changes with frequency of light wave Curve chart.
Fig. 7 is the 4th kind of embodiment that forward and reverse efficiency of transmission of the unidirectional waveguide of turning round in magneto-optic space changes with frequency of light wave Curve chart.
Detailed description of the invention
As it is shown in figure 1, the controlled unidirectional waveguide of arbitrarily turning round of the fast mould of magnetic surface of the No leakage of the present invention low damage type magneto-optic space Including 1, optical output port of a light input end mouth, 4, Jie of 2, first magneto-optic material layer the 3, second magneto-optic material layer Matter layer 5, first is inhaled ripple layer 6, second and is inhaled ripple layer the 7, the 3rd suction ripple layer the 8, the 4th suction ripple layer 9 and two rightabout bias magnetic fields H0；Unidirectional waveguide of turning round is made up of the waveguide of magneto-optic space, and the mode of operation of unidirectional waveguide of turning round is TE pattern, the first magneto-optic memory technique Layer the 3, second magneto-optic material layer 4 and dielectric layer 5 are a three-decker fiber waveguide, and fiber waveguide can be used with one-way transmission optical signal Make optical diode and isolator, optical diode and isolator by the first magneto-optic material layer the 3, second magneto-optic material layer 4 and dielectric layer 5 Constitute.Angle of turning round can be the angle between 0 degree to 180 degree, and the angle of bend of unidirectional waveguide of turning round can also use: 0 degree Angle between 180 degree；Such as: 30 degree, 45 degree, 60 degree, 90 degree, 120 degree, 135 degree, 150 degree and 180 degree.Wherein Fig. 1 A () unidirectional angle of turning round is 30 degree, the unidirectional angle of turning round of Fig. 1 (b) is 45 degree, the unidirectional angle of turning round of Fig. 1 (c) is 60 degree, Fig. 1 D the unidirectional angle of turning round of (), (i) is 90 degree, the unidirectional angle of turning round of Fig. 1 (e) is 120 degree, the unidirectional angle of turning round of Fig. 1 (f) is 135 Degree, the unidirectional angle of turning round of Fig. 1 (g) be 150 degree and Fig. 1 (h) unidirectional angles of turning round be 180 degree.Three-decker is flat wave-guide knot Structure, this three-decker is arbitrarily angled Curved, arbitrarily angled bending be shaped as circular arc (arc Changing Direction Type turn round waveguide), Such as, when angle of turning round is 45 degree, it is 1/8th annulus；When angle of turning round is 90 degree, it is 1/4th annulus； When angle of turning round is 180 degree, it is half annulus etc., by that analogy.Owing to device architecture of the present invention meets symmetry conservation, the most just It is that the mirror-image structure of its correspondence can effectively work too, thus Fig. 1 (d) and (i) both structure specular, possess same Operating characteristic.First magneto-optic material layer the 3, second magneto-optic material layer 4 and dielectric layer 5 are inputted with light by arbitrarily angled Curved Port 1 and optical output port 2 connect.Dielectric layer 5 is the region that light energy is mainly concentrated, the first magneto-optic memory technique 3 and the second magneto-optic Space between material 4 is dielectric layer 5, and dielectric layer 5 is divided into toroidal in waveguide bends, and the inner arc radius of annulus is r, its Outer arc radius is r+w, and the length of sweep depends on angle of turning round；Dielectric layer 5 uses vacuum, air, silicon dioxide (glass Glass) or the transparent plastics of operating wave.Magneto-optic material layer 3,4 and dielectric layer 5 constitute optical diode and isolator can be with one-way transmission Optical signal, magneto-optic memory technique 3,4 is magnetic surface fast wave with the surface of dielectric layer 5.Magneto-optic memory technique is magneto-optic glass or various dilute The materials such as the garnet of earth elements doping and rare earth-transition metal alloy thin film.First magneto-optic material layer 3 and the second magneto-optic memory technique Layer 4 is respectively arranged with bias magnetic field H in opposite direction0, i.e. bias magnetic field ⊙ H0(outward) and bias magnetic field H0(inner), biases magnetic Field H0The electric magnet controlled by the sense of current produces or is provided by revolvable permanent magnet, it is possible to control the sense of current Change the conducting direction of waveguide, or change by rotating permanent magnet.It is perpendicular to paper when the first magneto-optic material layer 3 is additional The magnetostatic field H faced out0, and the additional magnetostatic field H being perpendicular to paper inwards of the second magneto-optic material layer 40Time, unidirectional waveguide of turning round Port 1 be light input end, port 2 is optical output port, and port 1 turns on to port 2；Hang down when the first magneto-optic material layer 3 is additional Directly in paper magnetostatic field H inwards0, and the second magneto-optic material layer 4 is additional is perpendicular to the magnetostatic field H that paper is outside0Time, unidirectional turn The port 2 of waveguide bend is light input end mouth, and port 1 is optical output port, and port 2 turns on to port 1.First inhales ripple layer 6, second Inhaling ripple layer the 7, the 3rd and inhale ripple layer 8 and the 4th inhaling ripple layer 9 is identical or different absorbing material, absorbing material be polyurethane, graphite, Graphene, white carbon black, carbon fiber epoxy mixture, graphite thermal plastic material mixture, boron fibre epoxy resin mixture, stone Ink fibrous epoxy resin mixture, epoxy polysulfide, silicone rubber, urethane, fluoroelastomer, polyether-ether-ketone, polyether sulfone, polyarylsulfone (PAS) or Polymine.First inhale ripple layer 6, second inhale ripple layer the 7, the 3rd inhale ripple layer 8 and the 4th inhale ripple layer 9 respectively with flat wave-guide table The distance in face is 1/4 to 1/2 wavelength, and first inhales ripple layer 6, second inhales ripple layer the 7, the 3rd suction ripple layer 8 and the thickness of the 4th suction ripple layer 9 Respectively not less than 1/4 wavelength.
Surface magnetic wave produced by magneto-optic memory technique-medium interface is that one is similar to metallic surface plasma excimer (SPP) Phenomenon.Magneto-optic memory technique is under the effect of biasing magnetostatic field, and pcrmeability is tensor form, meanwhile, in certain optical band scope In, its effective refractive index is negative value.Thus, the surface of magneto-optic memory technique can produce a kind of guided wave, and has the property of one way propagation Can, referred to as surface magnetic wave (surface magnetopolaron ripple, SMP).
The present invention is a kind of No leakage low damage type magneto-optic space magnetic surface unidirectional waveguide of turning round of fast mould random angle, and this device is The nonreciprocity being had based on magneto-optic memory technique, the characteristic that can produce surface wave in conjunction with magneto-optic memory technique-medium interface is studied The unidirectional waveguide of turning round with excellent properties gone out.Magneto-optic memory technique-medium-magneto-optic memory technique three-decker waveguide and four suction ripple layers Combination, the magnetic surface fast wave utilizing magneto-optic memory technique-medium interface to produce transmits to the bend in one direction carrying out light, utilizes the sense of current Controlled electric magnet controls the conducting direction of waveguide, i.e. bias magnetic field direction and decision is turned round the conducting direction of waveguide, turns round Angle can accomplish arbitrary value.Meanwhile, inhale ripple layer and absorb useless ripple, eliminate light path interference.
The technical scheme is that the light nonreciprocity being had based on magneto-optic memory technique and magneto-optic memory technique-medium interface are had Have a uniqueness can conduction surfaces wave property, it is achieved the design of controlled unidirectional waveguide of turning round.The ultimate principle of this technical scheme is as follows:
Magneto-optic memory technique is a kind of material with magnetic anisotropy, additional magnetostatic field cause the magnetic couple within magneto-optic memory technique Extremely son arranges at same direction, and then produces dipole moment.Strong interaction will be there is in dipole moment with optical signal, and then Produce the nonreciprocity transmission of light.It is the outside bias magnetic field H of vertical paper in direction0Effect under, the magnetic conductance of magneto-optic memory technique Rate tensor is:
[ μ 1 ] = μ r iμ κ 0 - iμ κ μ r 0 0 0 μ 0 , - - - ( 1 )
The matrix element of permeability tensor is given by below equation group:
μ r = μ 0 ( 1 + ω m ( ω 0 - i α ω ) ( ω 0 - i α ω ) 2 - ω 2 ) , μ κ = μ 0 ω m ω ( ω 0 - i α ω ) 2 - ω 2 , ω 0 = μ 0 γH 0 , ω m = μ 0 γM s - - - ( 2 )
Wherein, μ0For the pcrmeability in vacuum, γ is gyromagnetic ratio, H0For externally-applied magnetic field, MsFor saturation magnetization, ω is Operating frequency, α is loss factor.If change bias magnetic field direction be vertical paper inwards, then H0And MsBy reindexing.
Surface magnetic wave produced by magneto-optic memory technique and medium interface then can be according to the permeability tensor of magneto-optic memory technique and wheat Ke Siwei solving equations draws.Meet electric field and magnetic field that surface wave (for TE ripple) exists at interface and should have following shape Formula:
E i = e x i 0 0 e i ( k z z + k y i y - ω t ) , H i = 0 h y i h z i e i ( k z z + k y i y - ω t ) - - - ( 3 )
Wherein i=1 represents magneto-optic memory technique region, and i=2 represents areas of dielectric.Substitution maxwell equation group:
▿ × E i = - j ∂ E x i ∂ z - k ∂ E x i ∂ y = - ∂ B i ∂ t , ▿ × H i = - ∂ D i ∂ t , - - - ( 4 )
Further according to constitutive relationship and boundary condition, wave vector k about surface magnetic wave can be drawnzTranscendental equation:
μ e μ 0 ω 2 μ 0 ϵ 0 - k z 2 + ω 2 μ e ϵ 1 - k z 2 - jμ k μ r k z = 0 , - - - ( 5 )
Wherein,Effective permeability for magneto-optic memory technique.This transcendental equation can be asked by numerical solution Solve, finally give kzValue.Also can find out from equation, owing to equation comprises μκkzItem, so, surface magnetic wave has nonreciprocal Property (one way propagation).
Visible, according to the three-decker of magneto-optic memory technique-medium-magneto-optic memory technique, and at the first magneto-optic material layer 3 and second Rightabout magnetic field is set at magneto-optic material layer 4, and is controlled electric magnet magnetic direction by electric current, then will constitute effective Controlled unidirectional waveguide of turning round.And due to the characteristic of surface magnetic wave (SMP), waveguide of turning round will not have warp architecture in theory Produced loss.As in figure 2 it is shown, use yttrium iron garnet (YIG) as magnetically anisotropic substance, dielectric layer is air (n0 =1), bias magnetic field size is 900Oe, thickness of dielectric layers w=5mm, and first inhales ripple layer 6, second inhales ripple layer the 7, the 3rd suction ripple layer 8 And the 4th inhale the ripple layer 9 distance w respectively and between waveguide1=5mm, arc radius r=30mm, operating frequency f of device by Magneto-optic memory technique and the DIELECTRIC CONSTANT ε of medium1, ε2With pcrmeability [μ1], μ2Being determined, operating frequency is that f=6GHz, YIG material damages Consumption factor alpha=3 × 10-4, angle of turning round is 90 °.The vertical paper of magnetic direction at the first magneto-optic material layer 3 is outside, and the When the vertical paper of magnetic direction at two magneto-optic material layer 4 is inside, if light inputs from port 1, will simultaneously two magneto-optic memory techniques- Medium interface produces the surface magnetic wave of unidirectional forward transmission, finally exports from port 2；If light is when port 2 inputs, due to magnetic table The nonreciprocity of face ripple cause light wave cannot inside device reverse transfer, thus cannot export from port 1, light energy is whole It is blocked at input port 2.Simultaneously it will be seen that light ware energy is limited in well turns round in waveguide, loss value is the lowest. The conducting direction of waveguide of turning round is determined by the direction of externally-applied magnetic field, changes the first magneto-optic material layer 3 and the second magneto-optic when simultaneously During magnetic direction added by material layer 4, as it is shown on figure 3, use yttrium iron garnet (YIG) as magnetically anisotropic substance, it is situated between Matter layer 5 is air (n0=1), bias magnetic field size is 900Oe, thickness of dielectric layers w=5mm, and first inhales ripple layer 6, second inhales ripple Layer the 7, the 3rd is inhaled ripple layer 8 and the 4th and is inhaled the ripple layer 9 distance w respectively and between waveguide1=5mm, the inner arc radius r=of annulus 30mm, operating frequency f of device is by magneto-optic memory technique and the DIELECTRIC CONSTANT ε of medium1, ε2With pcrmeability [μ1], μ2Determined, work Frequency is f=6GHz, YIG spillage of material factor alpha=3 × 10-4, angle of turning round is 90 °, and the magnetic field at the first magneto-optic memory technique 3 is Inwards, and to be vertical paper outside the magnetic field at the second magneto-optic memory technique 4 for vertical paper, and the conducting direction of waveguide of turning round is contrary 's.When light wave inputs from port 2, it is possible to produce surface magnetic wave at device inside, then export from port 1；When light wave is from end During mouth 1 input, owing to the nonreciprocity of device causes cannot propagating inside it reverse light wave, port 2 does not has any light to export, Light energy is the most all blocked at input port 1.
The controlled unidirectional waveguide of arbitrarily turning round of the No leakage low damage magneto-optic space fast mould of magnetic surface of device of the present invention has magneto-optic The three-decker feature of material-medium-magneto-optic memory technique, the inner arc radius r of its physical dimension and parameter, such as annulus and medium Layer thickness w can select according to operation wavelength and actual demand neatly.Change size and device performance is not had big impact.
Provide four embodiments below in conjunction with the accompanying drawings, use yttrium iron garnet (YIG) as magnetic respectively to different in an embodiment Property material, bias magnetic field size is 900Oe, and dielectric layer 5 is air (n0=1), the thickness w=5mm of dielectric layer 5, annulus interior Arc radius r=30mm, first inhale ripple layer 6, second inhale ripple layer the 7, the 3rd inhale ripple layer 8 and the 4th inhale ripple layer 9 respectively with waveguide Between distance be w1=5mm, operating frequency is f=6GHzf, YIG spillage of material factor alpha=3 × 10-4。
Embodiment 1
With reference to Fig. 1 (b), the controlled waveguide of turning round in direction is made up of the waveguide of magneto-optic space, and angle of turning round is 45 degree.At work frequency In section, control the vertical paper of magnetic direction at the first magneto-optic material layer 3 by electromagnet current outside, the second magneto-optic material layer Inwards, waveguide of turning round will turn on to port 2 the vertical paper of magnetic direction at 4 from port 1；On the contrary, the first magneto-optic memory technique 3 is controlled Inwards, the vertical paper of magnetic direction at the second magneto-optic memory technique 4 is outside, and waveguide of turning round will be from port for place's vertical paper of magnetic direction 2 turn on to port 1.Forward and reverse efficiency of transmission of these two kinds of situations is identical.With reference to Fig. 4, the work frequency of the controlled waveguide of turning round in direction Rate scope is 4.99GHz～7.29GHz.In operating frequency range, it is considered to spillage of material, direction is controlled turns round waveguide up to Being 23.215dB to forward and reverse transmission isolation, forward transmission insertion loss is 0.0228dB.
Embodiment 2
With reference to Fig. 1 (d) and (i), unidirectional waveguide of turning round is made up of the waveguide of magneto-optic space, and angle of turning round is 90 degree.In work In frequency range, control the vertical paper of magnetic direction at the first magneto-optic material layer 3 by electromagnet current outside, the second magneto-optic sheet material layers Expecting the vertical paper of the magnetic direction at 4 inwards, waveguide of turning round will turn on to port 2 from port 1；On the contrary, the first magneto-optic material is controlled At the bed of material 3, the vertical paper of magnetic direction is inwards, and the vertical paper of magnetic direction at the second magneto-optic material layer 4 is outside, waveguide of turning round To turn on to port 1 from port 2.Forward and reverse efficiency of transmission of these two kinds of situations is identical.With reference to Fig. 5, the controlled waveguide of turning round in direction Operating frequency range be 5.04GHz～7.44GHz.In operating frequency range, it is considered to spillage of material, the controlled ripple that turns round in direction Leading the most forward and reverse transmission isolation is 25.513dB, and forward transmission insertion loss is 0.0123dB.
Embodiment 3
With reference to Fig. 1 (f), unidirectional waveguide of turning round is made up of the waveguide of magneto-optic space, and angle of turning round is 135 degree.At working frequency range In, control the vertical paper of magnetic direction at the first magneto-optic material layer 3 by electromagnet current outside, the second magneto-optic material layer 4 Inwards, waveguide of turning round will turn on to port 2 the vertical paper of magnetic direction at place from port 1；On the contrary, the first magneto-optic material layer is controlled At 3, the vertical paper of magnetic direction is inwards, and the vertical paper of magnetic direction at the second magneto-optic memory technique 4 layers is outside, and waveguide of turning round will be from Port 2 turns on to port 1.Forward and reverse efficiency of transmission of these two kinds of situations is identical.With reference to Fig. 6, the work of the controlled waveguide of turning round in direction Working frequency scope is 5.05GHz～7.41GHz.In operating frequency range, it is considered to spillage of material, direction is controlled turns round waveguide Being up to forward and reverse transmission isolation is 23.372dB, and forward transmission insertion loss is 0.0200dB.
Embodiment 4
With reference to Fig. 1 (h), unidirectional waveguide of turning round is made up of the waveguide of magneto-optic space, and angle of turning round is 180 degree.At working frequency range In, control the vertical paper of magnetic direction at the first magneto-optic material layer 3 by electromagnet current outside, the second magneto-optic material layer 4 Inwards, waveguide of turning round will turn on to port 2 the vertical paper of magnetic direction at place from port 1；On the contrary, the first magneto-optic material layer is controlled At 3, the vertical paper of magnetic direction is inwards, and the vertical paper of magnetic direction at the second magneto-optic material layer 4 is outside, and waveguide of turning round will be from Port 2 turns on to port 1.Forward and reverse efficiency of transmission of these two kinds of situations is identical.With reference to Fig. 7, the work of the controlled waveguide of turning round in direction Working frequency scope is 4.99GHz～7.33GHz.In operating frequency range, it is considered to spillage of material, direction is controlled turns round waveguide Being up to forward and reverse transmission isolation is 27.545dB, and forward transmission insertion loss is 0.00765dB.
Transmission by the magneto-optic space unidirectional waveguide of turning round of the fast mould of magnetic surface of Fig. 4, Fig. 5, Fig. 6 turn round angle different with Fig. 7 Efficiency curve diagram can obtain magneto-optic space and turn round the light frequency range of waveguide transmitted magnetic surface fast wave, the most unidirectional waveguide of turning round Operating frequency range.As can be known from the results, the No leakage of the present invention low damage magneto-optic space fast mould of magnetic surface is controlled unidirectional arbitrarily turns round Waveguide can effectively work.
Present invention described above all has improvements in detailed description of the invention and range of application, is not construed as this Bright restriction.

Claims (10)

1. the controlled unidirectional waveguide of arbitrarily turning round of the No leakage low damage magneto-optic space fast mould of magnetic surface, it is characterised in that it includes One light input end mouth (1), optical output port (2), two magneto-optic material layer (3,4), dielectric layer (5), four suctions Ripple layer (6,7,8,9) and two rightabout bias magnetic fields, and direction is controlled；Described magneto-optic material layer (3,4) and dielectric layer (5) being a three-decker fiber waveguide, described three-decker is arbitrarily angled Curved, at described magneto-optic material layer (3,4) It is provided with the bias magnetic field that both direction is contrary, and direction is controlled；Space between described magneto-optic material layer (3,4) is dielectric layer (5), the port (1) of described unidirectional waveguide of turning round is light input end mouth, and its port (2) is optical output port；Described dielectric layer (5) It is divided into toroidal in waveguide bends；Described magneto-optic material layer is magnetic surface fast wave with the surface of dielectric layer (5).
2. according to the controlled unidirectional waveguide of arbitrarily turning round of the low damage magneto-optic of the No leakage described in the claim 1 space fast mould of magnetic surface, its Being characterised by, optical diode and isolator are made up of magneto-optic material layer (3,4) and dielectric layer (5).
3. according to the controlled unidirectional waveguide of arbitrarily turning round of the low damage magneto-optic of the No leakage described in the claim 1 space fast mould of magnetic surface, its Being characterised by, described magneto-optic memory technique is magneto-optic glass or various rare earth doped garnet and rare earth-transition metal closes The materials such as gold thin film.
4. according to the controlled unidirectional waveguide of arbitrarily turning round of the low damage magneto-optic of the No leakage described in the claim 1 space fast mould of magnetic surface, its Being characterised by, described magneto-optic material layer (3,4) and dielectric layer (5) are by arbitrarily angled Curved and light input end mouth (1) and light Output port (2) connects.
5. according to the controlled unidirectional waveguide of arbitrarily turning round of the low damage magneto-optic of the No leakage described in the claim 1 space fast mould of magnetic surface, its It is characterised by: described dielectric layer (5) is the plastics that vacuum, air, silicon dioxide or operating wave are transparent.
6. according to the controlled unidirectional waveguide of arbitrarily turning round of the low damage magneto-optic of the No leakage described in the claim 1 space fast mould of magnetic surface, its Being characterised by, described three-decker is flat wave-guide structure.
7. according to the controlled unidirectional waveguide of arbitrarily turning round of the low damage magneto-optic of the No leakage described in the claim 1 space fast mould of magnetic surface, its Be characterised by, described arbitrarily angled Curved be 30 degree of shapes of turning round, 45 degree of shapes of turning round, 60 degree of shapes of turning round, 90 degree turn round Shape, 120 degree of shapes of turning round, 135 degree of shapes of turning round, 150 degree of shapes of turning round, 180 degree of shapes of turning round.
8. according to the controlled unidirectional waveguide of arbitrarily turning round of the low damage magneto-optic of the No leakage described in the claim 1 space fast mould of magnetic surface, its It is characterised by: described suction ripple layer (6,7,8,9) is identical or different absorbing material；Described absorbing material be polyurethane, graphite, Graphene, white carbon black, carbon fiber epoxy mixture, graphite thermal plastic material mixture, boron fibre epoxy resin mixture, stone Ink fibrous epoxy resin mixture, epoxy polysulfide, silicone rubber, urethane, fluoroelastomer, polyether-ether-ketone, polyether sulfone, polyarylsulfone (PAS) or Polymine.
9. according to the controlled unidirectional waveguide of arbitrarily turning round of the low damage magneto-optic of the No leakage described in the claim 1 space fast mould of magnetic surface, its It is characterised by: described suction ripple layer (6,7,8,9) distance with described flat wave-guide surface respectively is 1/4 to 1/2 wavelength；Described Inhale the thickness of ripple layer (6,7,8,9) respectively not less than 1/4 wavelength.
10. according to the controlled unidirectional waveguide of arbitrarily turning round of the low damage magneto-optic of the No leakage described in the claim 1 space fast mould of magnetic surface, its It is characterised by: described bias magnetic field is produced by sense of current controlled electromagnet or permanent magnet, and permanent magnet can rotate；Described side Waveguide is turned round or unidirectional waveguide of turning round is made up of the waveguide of magneto-optic space to controlled；The mode of operation of described unidirectional waveguide of turning round is TE Pattern.
CN201610796510.3A 2016-08-31 2016-08-31 Leakage-free low-loss magneto-optical gap magnetic surface fast mode controllable one-way arbitrary turning waveguide Expired - Fee Related CN106200026B (en)

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