CN108828717A - Optical path one-way conduction component structure and its application based on super surface balzed grating, - Google Patents
Optical path one-way conduction component structure and its application based on super surface balzed grating, Download PDFInfo
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- CN108828717A CN108828717A CN201810586231.3A CN201810586231A CN108828717A CN 108828717 A CN108828717 A CN 108828717A CN 201810586231 A CN201810586231 A CN 201810586231A CN 108828717 A CN108828717 A CN 108828717A
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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
- G02B6/124—Geodesic lenses or integrated gratings
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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
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/27—Optical coupling means with polarisation selective and adjusting means
- G02B6/2746—Optical coupling means with polarisation selective and adjusting means comprising non-reciprocal devices, e.g. isolators, FRM, circulators, quasi-isolators
Abstract
The invention discloses based on super surface balzed grating, optical path one-way conduction component structure and its application, the optical path one-way conduction component structure include a substrate, be located at the first surpassing surface balzed grating, and the second surpassing surface balzed grating, and the super surface balzed grating, of third in the middle part of the substrate other side for one side of substrate upper and lower part；The first surpassing surface balzed grating, the second surpassing the super surface balzed grating, of surface balzed grating, third is the dielectric nano brick array that the identical dielectric nano brick of size is equidistantly arranged to make up, dielectric nano brick towards cyclically-varying in the dielectric nano brick array constituted；Wherein, in the super surface balzed grating, of third dielectric nano brick direction with the first surpass surface balzed grating, the second surpass the opposite of surface balzed grating,.The configuration of the present invention is simple, it is only necessary to which three super surface balzed grating,s can independently realize optical path one-way conduction, can be used for realizing the nonreciprocal control of optical path in fiber optic communication, laser optical system point etc..
Description
Technical field
The invention belongs to micronano optical technical fields more particularly to a kind of optical path based on super surface balzed grating, unidirectionally to lead
Logical component structure and its application.
Background technique
In the light path design of various optical systems, it is frequently run onto the operative scenario for needing positive transmission, reversely ending.Than
Such as, in optical fiber telecommunications system, the design of one-way conduction is needed to prevent the backtracking of light；It is abundant in laser interference system
It using luminous energy and avoids interfering, it is also desirable to which the laser after beam splitting does not return after reversion along original optical path.It realizes and unidirectionally leads at present
Logical method mainly utilizes nonreciprocal device, such as Faraday rotator, then various polarization beam apparatus, wave plate is cooperated to complete light
The one-way conduction function on road.But the problems such as there are expensive, optical path is complicated, reliability is low, low efficiency, poor universality, because
The innovation and revolution of this urgently new technology.
Summary of the invention
Aiming at the problems existing in the prior art, the present invention provides a kind of optical path based on super surface balzed grating, is unidirectional
Breakover element structure and its application.
Optical path one-way conduction component structure provided by the invention based on super surface balzed grating, including：
One substrate, be located at one side of substrate upper and lower part the first surpass surface balzed grating, and the second surpass surface glittering
Grating and the super surface balzed grating, of third in the middle part of the substrate other side；
The first surpassing surface balzed grating, is the first dielectric nano brick array being arranged to make up by several first array elements；
The second surpassing surface balzed grating, is the second dielectric nano brick array being arranged to make up by several second array units；
The super surface balzed grating, of third is the third dielectric nano brick array being arranged to make up by several third array elements；
First array element, second array unit, third array element are by the identical N number of dielectric nano brick edge of size
Substrate long axis direction is equidistantly arranged to make up, and dielectric nano brick is sub-wavelength dimensions；Wherein, the first array element and second gust
Each dielectric nano brick is incremented by along substrate long axis direction by step-length of m*2 π/N towards angle in column unit；In third array element
Each dielectric nano brick towards angle along substrate long axis direction using m*2 π/N as increments；M is integer greater than 0, m and N's
Value will ensure that step-length is less than pi/2；
Last position in first dielectric nano brick and third array element in first array element, second array unit
Dielectric nano brick it is identical towards angle；
The first dielectric nano brick array, the second dielectric nano brick array, third dielectric nano brick battle array constituted
In column, dielectric nano brick is equidistant arrangement.
Further, the substrate is silicon dioxide substrates.
Further, the dielectric nano brick is silicon nano brick.
Optical path one-way conduction component structure provided by the invention based on super surface balzed grating, application be：The optical path
One-way conduction component structure for realizing optical path nonreciprocal control.
Compared with traditional one-way conduction method, the invention has the advantages that and beneficial effect：
(1) structure is simple, does not need other optical elements, it is only necessary to which three super surface balzed grating,s can independently realize optical path
One-way conduction.
(2) due to structure of the invention have super-micro size, also have it is small in size, light-weight, compact-sized, be easy to collect
At etc. important advantages, can be widely used for integreted phontonics field.
Detailed description of the invention
Fig. 1 is the schematic diagram of the optical path one-way conduction component structure in embodiment based on super surface balzed grating,；
Fig. 2 and Fig. 3 is the schematic diagram for the nonreciprocal transflector response that structure of the invention is realized at same incidence point；
Fig. 4 is the structural schematic diagram of nanometer block assembly in super surface balzed grating,；
Fig. 5 be in super surface balzed grating, dielectric nano brick towards angle schematic diagram；
Fig. 6 is the dielectric nano brick arrangement mode of three super surface balzed grating,s in embodiment, wherein figure (a) is the
Three surpass the dielectric nano brick arrangement mode of surface balzed grating, schemes (b) the first to surpass surface balzed grating, and the second surpassing surface
The dielectric nano brick arrangement mode of balzed grating,；
Fig. 7 is the schematic diagram of array element and super surface balzed grating, in embodiment, wherein figure (a) is to constitute first
Super surface balzed grating, and the array element schematic diagram for the second surpassing surface balzed grating,；Figure (b) is the first to surpass surface balzed grating,
With the second surpass surface balzed grating, schematic diagram.
In figure, 1- the first surpasses surface balzed grating, and 2- the second surpasses surface balzed grating, 3- substrate, and the super surface of 4- third is dodged
Credit grating, 5- dielectric nano brick, 6- substrate unit, 7- array element.
Specific embodiment
In order to illustrate more clearly of the present invention and/or technical solution in the prior art, Detailed description of the invention sheet will be compareed below
The specific embodiment of invention.It should be evident that drawings in the following description are only some embodiments of the invention, for this
For the those of ordinary skill of field, without creative efforts, it can also be obtained according to these attached drawings others
Attached drawing, and obtain other embodiments.
It should be noted that spacing, that is, dielectric nano brick center distance of dielectric nano brick described herein.
For convenient for being hereinafter described, spy's one coordinate system of building, using the width of substrate, length, thick direction as x-axis, y-axis, z
Axis direction.
A specific embodiment of the invention is further illustrated below in conjunction with attached drawing.
Referring to Fig. 1, it show the optical path one-way conduction component structure based on super surface balzed grating, including substrate 3, difference
Positioned at 3 side upper and lower part of substrate the first surpass surface balzed grating, 1 and the second surpass surface balzed grating, 2 and be located at lining
The super surface balzed grating, 4 of third in the middle part of 3 other side of bottom, the super surface balzed grating, 4 of third and the first surpass surface balzed grating, 1,
The region the second surpassed among surface balzed grating, 2 is opposite.The first surpass surface balzed grating, 1, the second surpass surface balzed grating, 2,
Three surpassing surface balzed grating, 4 is the dielectric nano brick array that the identical dielectric nano brick 5 of size is equidistantly arranged to make up,
Dielectric nano brick 5 is sub-wavelength dimensions.The direction of dielectric nano brick is periodical in the dielectric nano brick array constituted
Variation.The first surpass surface balzed grating, 1, the second surpass the corresponding dielectric of the super surface balzed grating, 4 of surface balzed grating, 2, third
The structure snd size of nano brick array are all the same, dielectric nanometer in the identical finger dielectric nano brick array of the structure snd size
The quantity of brick, the spacing of dielectric nano brick, the columns of the line number of array and array are all the same.Wherein, the first surpass surface sudden strain of a muscle
Credit grating 1 and the second surpass surface balzed grating, 2 be identical dielectric nano brick array, including each dielectric nano brick
Towards all the same.But in the super surface balzed grating, 4 of third the direction of dielectric nano brick with the first surpass surface balzed grating, 1, the
Two surpass surface balzed grating, 2 on the contrary, to provide size identical but contrary wave vector knots modification Δ k, as shown in Figure 6.
For ease of understanding in dielectric nano brick array direction cyclically-varying, propose the concept of array element, battle array
Column unit be defined as it is identical by size, be equidistantly arranged to make up along the y-axis direction towards different several dielectric nano bricks.First
Super surface balzed grating, 1 the second surpasses the super surface balzed grating, 4 of surface balzed grating, 2, third and can be seen that by several array elements
Along the x-axis direction and/or y-axis direction is arranged to make up.The first surpass surface balzed grating, 1 for constituting, the second surpass surface balzed grating, 2
Array element, wherein each dielectric nano brick direction along the y-axis direction using m*2 π/N as step-length be incremented by；And it is used to constitute third
The array element of super surface balzed grating, 4, wherein the direction of each dielectric nano brick is passed along y axis direction using m*2 π/N as step-length
Subtract, wherein m is integer greater than 0, and the value of m and N will ensure that step-length is less than pi/2.In the present embodiment, the first array element,
In two array elements in first dielectric nano brick and third array element last dielectric nano brick it is equal towards angle
It is 0.
Technical solution of the present invention for ease of understanding is described in detail below structure of the invention and is able to achieve optical path one-way conduction institute
Based on technical principle.
(1) principle that traveling wave and evanescent wave mutually convert.
When incident light is after object scatter, a kind of scattering light that can travel to far field is referred to as traveling wave, and another
Then it is referred to as evanescent wave in the scattering light that near field is decayed quickly.Since evanescent wave amplitude is with the increasing of the depth perpendicular with interface
Form decays greatly and exponentially, and changes phase with tangential direction, therefore is also surface wave.
Very airborne light wave is expressed asThe electromagnetic wave for meeting Maxwell equation group for one comes
It says, wave vector k0It should meet：
Wherein, k0For wave vector in vacuum, k0=2 π/λ0；kxIt is k0Wave vector component in the x direction, kyIt is k0In the direction y
On wave vector component, kzIt is k0Wave vector component in a z-direction；λ0Be respectively with c light wavelength in a vacuum and light in a vacuum
Spread speed；N is the refractive index of medium where free space.
WhenWhen, i.e.,K at this timezFor real number, light wave is traveling wave；WhenWhen, i.e.,K at this timezFor imaginary number, light wave is evanescent wave.As can be seen that the key that evanescent wave is converted into traveling wave is wave vector component
Change.And the SPA sudden phase anomalies that super surface is brought into are just equivalent to the variable quantity of wave vector in fact.
When light wave is by super surface, traditional law of refraction needs to make corresponding adjustment, because super surface can be to process
Its light wave introduces a SPA sudden phase anomalies value Δ φ.Assuming that phase change rate d φ/dx along interface is definite value, in conjunction with Fermat
Theorem can derive the broad sense law of refraction, as follows：
Wherein, θiFor incidence angle, θtFor the angle of emergence, niAnd ntIt is the refractive index of incident medium and emergent medium, λ respectively0For
The wavelength of incident light in a vacuum.
Formula (1) and formula (2) are exactly traditional law of refraction being adaptively adjusted of being applied to be made when super surface.
Work as θiWhen=0, formula (2) is expressed as：
The equal sign both sides of formula (3) are multiplied by wave vector k in vacuum simultaneously0, while being write phase change rate as wave vector knots modification
The form of Δ k, then formula (3) can be deformed into：
So as to which the sinusoidal sin (θ of the angle of emergence is calculatedt)：
Wherein, n2Indicate the refractive index of substrate in structure of the invention.
As long as providing suitable SPA sudden phase anomalies value Δ φ, so that it may realize light beam reflection at any angle and refraction.Super table
Face balzed grating, can provide phase jump amount Δ φ, i.e. wave vector knots modification Δ k, and the difference of traveling wave and evanescent wave is by wave vector point
Caused by the change of amount, evanescent wave and traveling wave mutually convert both be exactly in fact wave vector component change, therefore, as long as providing
One suitable wave vector knots modification Δ k, theoretically can be achieved with the transformation of traveling wave and evanescent wave.
(2) incident light enters the principle ended from substrate left.
Structure of the invention can realize that the intermediate region for impinging perpendicularly on two super surface balzed grating,s from substrate left enters
Light is penetrated, is modulated by the super surface balzed grating, on the right side of substrate, traveling wave is converted into evanescent wave, and far field does not observe outgoing light wave.
Referring to fig. 2, medium a and c is air, and medium b is substrate.When incident beam impinges perpendicularly on two from left to right
When the intermediate region of super surface balzed grating, in medium a, the wave vector k of incident light1=n1k0Wave vector component in x, y, z direction
For：
Wherein, n1For the refractive index of medium a.
In medium b, the wave vector k of incident light2=n2k0, due to incident light vertical incidence, deviation does not occur for light beam, so wave
Swear k2Wave vector component in x, y, z direction is：
Wherein, n2For the refractive index of medium b.
When interface of the light propagation to medium b and c, since super surface balzed grating, adjusts the phase of incident light
System, provides a SPA sudden phase anomalies value Δ φ, i.e. wave vector knots modification Δ k, Δ k acts on kxOn, therefore in medium c, it is incident
The wave vector k of light3=n3k0Wave vector component in x, y, z direction is：
Wherein, n3For the refractive index of medium c.
K at this time3x≠ 0, if designing suitable wave vector knots modification Δ k, so that Δ k > n3k0, then have：
k3zFor imaginary number, being emitted light wave becomes evanescent wave, at this point, far field does not observe emergent light on the right side of substrate.Therefore, it manages
By being above that can convert evanescent wave for traveling wave by the principle, that is, realizes from substrate left and impinge perpendicularly on two super surfaces
The light of the intermediate region of balzed grating, cannot be connected.
(3) principle of incident light incident conducting on the right side of substrate.
Referring to Fig. 3, when incident beam turns left the super surface balzed grating, region for impinging perpendicularly on right side from the substrate right side,
In medium c, the wave vector k of incident light3=n3k0Wave vector component in x, y, z direction is：
In medium b, the wave vector k of incident light2=n2k0.According to snell law, when incident light is perpendicular to interface incidence,
Light beam should not deviation entrance second of medium.However SPA sudden phase anomalies caused by super surface make light wave that deviation have occurred, outgoing
Angle is θt.Since super surface balzed grating, modulates the phase of incident light, a SPA sudden phase anomalies value Δ φ is provided, i.e.,
Wave vector knots modification Δ k, Δ k act on kxOn.Therefore, wave vector component of the transmitted light wave in x, y, z direction is：
At this point, k2x≠ 0, if designing suitable wave vector knots modification Δ k, so that Δ k < n2k0, then have：
That is k2xFor real number, transmitted light wave is traveling wave, along θtDirection continuation travels to forward the super surface of substrate left and glares
On grid.Similarly, since super surface balzed grating, modulates the phase of incident light, and two super surfaces in left side glare
The dielectric nano brick of the dielectric nano brick array of grid is identical towards angle arrangement mode, and surpasses surface balzed grating, with right side
The dielectric nano brick of dielectric nano brick array is towards angle arrangement mode on the contrary, therefore, two super surfaces in left side glare
The SPA sudden phase anomalies amount that grid provide is-Δ φ, i.e. wave vector knots modification-Δ k, Δ k acts on kxOn.Therefore, refraction light wave is in x, y, z
The wave vector component in direction is：
Therefore for light from medium b vertical exit to medium a, the wave vector of transmitted light is still k1=n1k0。
When incident beam turns left the super surface balzed grating, region for impinging perpendicularly on right side from the right side, by formula (3)~(5)
It is found that angle of emergence sine sin (θt)≤1, i.e. Δ k≤n2k0.It can be obtained by formula (9) and (12), in n3k0< | Δ k |≤n2k0Range
Interior, incident light wave is theoretically that can convert evanescent wave for the traveling wave of left vertical incidence by the structure, and right side
The traveling wave of vertical incidence remains unchanged.
In conclusion super surface balzed grating, on the right side of substrate can be to impinging perpendicularly on the left of structure two from left to right
The light wave of super surface balzed grating, intermediate region provides | Δ k | wave vector knots modification, pass through the super surface being located on the right side of substrate and dodge
After Grating Modulation of shining, it is allowed to be converted into evanescent wave from traveling wave in optically denser medium, to not observe outgoing in the far field on right side
Light.And to turning left from the right side and impinge perpendicularly on the light wave of same incidence point, the super surface balzed grating, on the right side of substrate be allowed to through
After ovennodulation, the light wave in optically denser medium is still traveling wave, but is glittered to a certain special angle, and the another of substrate left is located at
Two super surface balzed grating,s glitter to directional light, are emitted from left side, i.e. the method for structure diffraction realizes optical device
Nonreciprocal transflector response at same incidence point, that is, realize the function of optical path one-way conduction.
(4) super surface balzed grating, phase adjusted principle.
The super surface balzed grating, of three of substrate surface of the present invention is all to carry out phase adjusted, super table to circularly polarized light (CP)
Face balzed grating, to left circularly polarized light (LCP) and right-circularly polarized light (RCP) phase adjusted effect be it is opposite, therefore, lining
Two super surface balzed grating,s in the left-hand face of bottom be it is duplicate, i.e., dielectric nano brick is complete towards angle arrangement mode
It is identical, and with the dielectric nano brick of the super surface balzed grating, on the right side of substrate towards angle arrangement mode on the contrary, such as Fig. 6 institute
Show.And any light can be broken into left circularly polarized light and right-circularly polarized light, therefore, structure of the invention is inclined to incident light
Polarization state is insensitive.
Using the direction for indicating dielectric nano brick towards angle Φ in the present invention, as shown in Figure 5, it is described towards angle be electricity
The long side of medium nano brick and the angle of x-axis, can be used for adjusting phase towards angle Φ.It is incident on the left-handed of super surface balzed grating,
Or dextrorotation rotatory polarization beam, the phase delay of 2 Φ will be generated.It therefore, can regulation and control outgoing by adjusting the size of Φ
The phase of light.
(5) design method that nano brick is arranged on super surface balzed grating,.Dielectric is determined according to the bore of incident light wave
Size M × M of nano brick array is set as needed the wave vector knots modification Δ k of incident light wave, and then determines dielectric nano brick
The array element period of array.Assuming that the phse conversion of dielectric nano brick is m*2 π in an array element period, m is big
In 0 integer.Due to can be used for adjusting phase towards angle Φ, it is incident on the left-handed or dextrorotation rotatory polarization of super surface balzed grating,
Beam will generate the phase delay of 2 Φ, so, the variable quantity at dielectric nano brick towards angle is m* in an array element period
π。
By formula (4) it is found that wave vector knots modification Δ k and the relationship of array element periods lambda are as follows：
Δ k × Λ=m*2 π (14)
And array element periods lambda=N*C, C are nano brick cell size, N is dielectric nano brick number in array element
Amount.
The calculation formula of nano brick cell size C is as follows：
In the present embodiment, it is assumed that the phse conversion of dielectric nano brick is 4 π in an array element period, therefore wave vector changes
Variable Δ k and the relationship of array element periods lambda are：
The π of Δ k × Λ=4 (16)
Referring to Fig. 7, in the present embodiment, an array element includes five dielectric nano bricks, therefore obtains each nano brick
Cell size C is：
Super surface balzed grating, on the right side of substrate provides Δ k (n to light wave incident from left to right3k0< | Δ k |≤n2k0)
Wave vector knots modification, and two of substrate left super surface balzed grating,s are to incident light wave offer-Δ k wave vector of turning left from the right side
Knots modification, the surface exiting parallel being allowed on the left of perpendicular to structure.
Structure of the invention can be used in fiber optic communication and various laser optical systems, as the nonreciprocal of realization optical path
Control element.
Embodiment
The present embodiment will provide a kind of specific optical path one-way conduction component structure and its specific preparation process.
Optical path one-way conduction component structure designed by the present embodiment, should reach：A substrate left side is impinged perpendicularly on from left to right
The incident light wave of the side surface Liang Gechao balzed grating, intermediate region is modulated by being located at the super surface balzed grating, on the right side of structure
Afterwards, it is converted into evanescent wave from traveling wave in optically denser medium, to not observe outgoing light wave in the far field on right side；And to past from the right side
A left side impinges perpendicularly on the incident light wave of same incidence point, after the super surface balzed grating, modulation on the right side of structure, in light
Light wave in close medium is still traveling wave, but is glittered to a certain special angle, and two super surfaces being located on the left of structure are glittered
The blaze of grating is emitted, i.e. light is realized in nonreciprocal transflector response of the realization light wave at same incidence point to directional light from left side
The function of road one-way conduction.
In the present embodiment, dielectric nano brick is silicon nano brick, and substrate is silicon dioxide substrates.The first surpass surface to glare
Grid 1, the dielectric nano brick arrangement mode for the second surpassing the super surface balzed grating, 4 of surface balzed grating, 2, third are shown in Fig. 6.Electricity is situated between
The length of matter nano brick is denoted as L, W, H respectively, nano brick cell size is denoted as C, dielectric nano brick is remembered towards angle
For Φ.Nanometer block assembly as shown in Figure 4, the lining as accompanying by single dielectric nano brick 5 and the single dielectric nano brick 5
Bill kept on file member 6 is constituted, wherein the side length of substrate unit 6, that is, nano brick cell size C namely adjacent single dielectric nano brick
Spacing.Super surface balzed grating, can be regarded as to be made of several nanometers of block assembly close-packed arrays.
See Fig. 6, super surface balzed grating, can be regarded as to be periodically arranged to make up on substrate 3 by several array elements 7.Array
Unit 7 unanimously, towards the different several dielectric nano bricks 5 in angle are equidistantly arranged in columns is made of size.In the present embodiment, battle array
Column unit 7 is consistent by size, constitutes towards 5 different dielectric nano bricks 5 of angle, dielectric nano brick spacing C=300nm.
Dielectric nano brick array phase in one array element period is transformed to 4 π, therefore, in array element, each dielectric nanometer
Brick is increased towards angle with the step-length of 4 π/5 one by one.
The optimization process of optical path one-way conduction component structure designed by the present embodiment is as follows：
Firstly, choosing work dominant wavelength λ=830nm.
Then, under the dominant wavelength that works, using electromagnetic simulation software, such as Comsol, to the geometric parameters of nanometer block assembly
Number is emulated.More specifically, with left-handed rotatory polarization or the super surface balzed grating, of dextrorotation rotatory polarization vertical incidence, with the right side of transmission
The transformation efficiency of rounding polarisation or left-handed rotatory polarization is optimization object, obtains the corresponding geometric parameter of optimal transformation efficiency.This reality
It applies in example, optimized calculating, the geometric parameter for obtaining dielectric nano brick in super surface balzed grating, is：L=180nm, W=
100m, H=420nm, C=300nm.
In the optical path one-way conduction component structure of the present embodiment design, the super surface balzed grating, of third on the right side of substrate to from
The light wave of vertical incidence provides 1.1k from left to right0Wave vector knots modification, substrate left the first surpasses surface balzed grating, and second
Super surface balzed grating, provides 1.1k to from the light wave of right vertical incidence of turning left0Wave vector knots modification.
By calculating, the super surface balzed grating, on the right side of the present embodiment can be obtained can be to impinging perpendicularly on knot from left to right
The light wave of two super surface balzed grating, intermediate regions provides 1.1k on the left of structure0Wave vector knots modification, be allowed in optically denser medium
It is converted into evanescent wave from traveling wave, the far field on the right side of structure does not observe emergent light；And to turn left from the right side impinge perpendicularly on it is same
The light wave of incidence point, after the super surface balzed grating, on the right side of structure is passed through modulation, the light wave in optically denser medium is still
It is so traveling wave, but glitters to a special angle, the sine value of the angleIt is left to be located at structure later
The super surface balzed grating, of the another two of side glitters to directional light, is emitted from left side, and above structure is realized using the method for diffraction
Nonreciprocal transflector response of the light wave at same incidence point, that is, realize the function of optical path one-way conduction.
Be described in above-described embodiment to illustrate the present invention, though text in be illustrated by specific term, not
Can be limited the scope of protection of the present invention with this, be familiar with this technical field personage can understand spirit of the invention with it is right after principle
It changes or modifies and reaches equivalent purpose, and this equivalent change and modification, should all be covered by scope of the claims institute circle
Determine in scope.
Claims (4)
1. the optical path one-way conduction component structure based on super surface balzed grating, characterized in that including：
One substrate is located at the first surpassing surface balzed grating, and the second surpass surface and glaring for one side of substrate upper and lower part
Grid and the super surface balzed grating, of third in the middle part of the substrate other side；
The first surpassing surface balzed grating, is the first dielectric nano brick array being arranged to make up by several first array elements；
The second surpassing surface balzed grating, is the second dielectric nano brick array being arranged to make up by several second array units；
The super surface balzed grating, of third is the third dielectric nano brick array being arranged to make up by several third array elements；
First array element, second array unit, third array element are by the identical N number of dielectric nano brick of size along substrate
Long axis direction is equidistantly arranged to make up, and dielectric nano brick is sub-wavelength dimensions；Wherein, the first array element and second array list
Each dielectric nano brick is incremented by along substrate long axis direction by step-length of m*2 π/N towards angle in member；Each electricity in third array element
Medium nano brick towards angle along substrate long axis direction using m*2 π/N as increments；M is the integer greater than 0, the value of m and N
Ensure that step-length is less than pi/2；
Last electricity is situated between in first dielectric nano brick and third array element in first array element, second array unit
Matter nano brick it is identical towards angle；
The first dielectric nano brick array for being constituted, the second dielectric nano brick array, in third dielectric nano brick array,
Dielectric nano brick is equidistant arrangement.
2. as described in claim 1 based on the optical path one-way conduction component structure of super surface balzed grating, it is characterized in that：
The substrate is silicon dioxide substrates.
3. as described in claim 1 based on the optical path one-way conduction component structure of super surface balzed grating, it is characterized in that：
The dielectric nano brick is silicon nano brick.
4. the application of the optical path one-way conduction component structure described in claim 1 based on super surface balzed grating, it is characterized in that：
The optical path one-way conduction component structure for realizing optical path nonreciprocal control.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110609345A (en) * | 2019-09-24 | 2019-12-24 | 武汉大学 | Manufacturing method of amplitude type grating based on micro-nano half-wave plate |
| CN114200571A (en) * | 2022-02-15 | 2022-03-18 | 北京亮亮视野科技有限公司 | Optical waveguide and head-mounted device with two super-surface gratings |
| CN114280716A (en) * | 2021-12-21 | 2022-04-05 | 深圳迈塔兰斯科技有限公司 | Component for optical isolator, optical isolator and equipment |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103631056A (en) * | 2012-08-24 | 2014-03-12 | Jds尤尼弗思公司 | A variable optical retarder |
| CN107085298A (en) * | 2017-06-20 | 2017-08-22 | 武汉大学 | A kind of 360 ° of full filed angle diffraction optical elements and its design method |
| CN107121782A (en) * | 2017-05-26 | 2017-09-01 | 武汉光迅科技股份有限公司 | A kind of compact multi-wavelength light component and its application method |
| US20170322418A1 (en) * | 2016-05-06 | 2017-11-09 | Magic Leap, Inc. | Metasurfaces with asymmetric gratings for redirecting light and methods for fabricating |
| CN107664780A (en) * | 2017-10-11 | 2018-02-06 | 武汉大学 | Dielectric nano brick array structure and its application as high-reflecting film and high transmittance film |
| CN107861257A (en) * | 2017-12-08 | 2018-03-30 | 武汉邮电科学研究院 | Optical mixer unit based on super surfacing and preparation method thereof |
| CN107884865A (en) * | 2017-11-23 | 2018-04-06 | 武汉大学 | The circular polarization polarizer and preparation method based on silicon nano brick Meta Materials |
-
2018
- 2018-06-08 CN CN201810586231.3A patent/CN108828717B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103631056A (en) * | 2012-08-24 | 2014-03-12 | Jds尤尼弗思公司 | A variable optical retarder |
| US20170322418A1 (en) * | 2016-05-06 | 2017-11-09 | Magic Leap, Inc. | Metasurfaces with asymmetric gratings for redirecting light and methods for fabricating |
| CN107121782A (en) * | 2017-05-26 | 2017-09-01 | 武汉光迅科技股份有限公司 | A kind of compact multi-wavelength light component and its application method |
| CN107085298A (en) * | 2017-06-20 | 2017-08-22 | 武汉大学 | A kind of 360 ° of full filed angle diffraction optical elements and its design method |
| CN107664780A (en) * | 2017-10-11 | 2018-02-06 | 武汉大学 | Dielectric nano brick array structure and its application as high-reflecting film and high transmittance film |
| CN107884865A (en) * | 2017-11-23 | 2018-04-06 | 武汉大学 | The circular polarization polarizer and preparation method based on silicon nano brick Meta Materials |
| CN107861257A (en) * | 2017-12-08 | 2018-03-30 | 武汉邮电科学研究院 | Optical mixer unit based on super surfacing and preparation method thereof |
Non-Patent Citations (5)
| Title |
|---|
| GUOXING ZHENG 等: "Focusing microwaves into subwavelength dimensions with a half-cylindrical hyperlens based on split ring resonators", 《CHINESE OPTICS LETTERS》 * |
| GUOXING ZHENG 等: "Metasurface holograms reaching 80% efficiency", 《NATURE NANOTECHNOLOGY》 * |
| ZILE LI 等: "All-silicon nanorod-based Dammann gratings", 《OPTICS LETTERS》 * |
| 王宇 等: "基于硅基超表面材料的光功率分配技术研究", 《光通信研究》 * |
| 郑国兴 等: "基于超表面材料的光波相位精密操控新技术", 《应用光学》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110609345A (en) * | 2019-09-24 | 2019-12-24 | 武汉大学 | Manufacturing method of amplitude type grating based on micro-nano half-wave plate |
| CN110609345B (en) * | 2019-09-24 | 2020-10-30 | 武汉大学 | Manufacturing method of amplitude type grating based on micro-nano half-wave plate |
| CN114280716A (en) * | 2021-12-21 | 2022-04-05 | 深圳迈塔兰斯科技有限公司 | Component for optical isolator, optical isolator and equipment |
| CN114280716B (en) * | 2021-12-21 | 2024-03-08 | 深圳迈塔兰斯科技有限公司 | Component for optical isolator, optical isolator and device |
| CN114200571A (en) * | 2022-02-15 | 2022-03-18 | 北京亮亮视野科技有限公司 | Optical waveguide and head-mounted device with two super-surface gratings |
| CN114200571B (en) * | 2022-02-15 | 2022-07-26 | 北京亮亮视野科技有限公司 | Optical waveguide and head-mounted device with two super-surface gratings |
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