CN115343892B - A Codable Multifunctional All-Dielectric Topological Waveguide State Switch - Google Patents

Abstract

The invention provides a multifunctional all-dielectric topological waveguide state switch capable of being coded, which comprises a non-plain topological area and a plain topological area; the non-plain topological area and the plain topological area are crossly arranged to form a waveguide transmission interface I and a waveguide transmission interface II; the waveguide transmission interface I is provided with a polarization source I, the waveguide transmission interface II is provided with a polarization source III and a polarization source IV, the waveguide transmission interface I and the waveguide transmission interface II are provided with a polarization source III and a polarization source IV on an included angle bisector, and the intersection center of the waveguide transmission interface I and the waveguide transmission interface II is provided with a polarization source V. The invention realizes multifunctional waveguide transmission, solves the problems of simplification, incoordination and the like of the functions of the traditional photonic waveguide device, enriches the functions of waveguide state switches and widens the application scene of the invention.

Description

A Codable Multifunctional All-Dielectric Topological Waveguide State Switch

technical field

The invention relates to the fields of topological photonics, quantum communication and integrated photonic optical path, in particular to a coded multifunctional all-dielectric topological spiral unidirectional boundary state switch.

Background technique

Photonic devices based on all-dielectric topological waveguides have immeasurable application prospects in the fields of topological photonics, quantum communication and integrated photonic optical circuits. At present, with the advent of the 6G era, the requirements for optical communication systems are getting higher and higher, especially for all-optical network communication. The integrated photonic optical circuit is constantly developing towards the direction of large capacity, high efficiency and miniaturization. Therefore, low-cost, high-efficiency, and multi-functional micro-optical devices are continuously researched and developed.

In 2008, the Zheng Wang group of MIT in the United States designed a unidirectional boundary waveguide transmission mode (Reflection-Free One-Way Edge Modes in a Gyromagnetic Photonic Crystal) based on gyromagnetic materials, and observed the anti- Observation of Unidirectional Backscattering-Immune Topological Electromagnetic States. Since then, waveguide optical devices based on magneto-optical photonic crystals have been continuously developed, such as optical isolators, optical couplers, waveguide beam splitters, and optical memories. However, the disadvantage is that the magneto-optical effect is weak in the optical band, and the system needs to be regulated by an external strong magnetic field.

In 2016, Professor Hu Xiao from the University of Tsukuba in Japan constructed a topological photonic crystal structure model (Scheme for Achieving a Topological Photonic Crystal by Using Dielectric Material) based on all-dielectric materials, which realized the propagation mode of the unidirectional helical boundary state. Subsequently, they observed a unidirectional helical boundary state protected by topological pseudospins in the laboratory in 2018 (Visualization of a Unidirectional Electromagnetic Waveguide Using Topological Photonic Crystals Made of Dielectric Materials). This topologically protected pseudo-spin state has excellent propagation characteristics such as robustness, defect immunity, and anti-interference, so it is widely used in the development and fabrication of all-dielectric waveguide photonic devices.

In 2018, the Xia group of Jiangsu University School of Science constructed a programmable topological insulator (Programmable Coding Acoustic Topological Insulator), which controls waveguide transmission through external coding to achieve multifunctional waveguide transmission effects. Academician Cui Tiejun of Southeast University is a well-known expert in coding metamaterials in my country. In 2021, he experimentally observed programmable three-dimensional topological surface states (Programmable Three-Dimensional Advanced Materials Based on Nanostructures as Building Blocks for Flexible Sensors).

At present, the research method of encoding photonic crystal structure to realize multifunctional, high efficiency and miniaturized waveguide photonic devices has broken the traditional design method of photonic crystal waveguide photonic devices with single function.

Contents of the invention

Aiming at the technical problems of simplification and incoordination of the functions of traditional optical waveguide devices, the present invention proposes a coded multifunctional topological helix unidirectional boundary state switch based on all-dielectric construction, through simple coding of chiral polarization source position and polarization direction , realizing multifunctional waveguide transmission.

In order to achieve the above object, the technical solution of the present invention is achieved as follows: a coded multifunctional all-dielectric topological waveguide state switch is characterized in that: it includes non-mediocre topological regions and mediocre topological regions; non-common topological regions and mediocre topological regions Waveguide transmission interface I and waveguide transmission interface II are formed by cross-like staggered arrangement; polarization source I is set on waveguide transmission interface I, polarization source III and polarization source IV are set on waveguide transmission interface II, between waveguide transmission interface I and waveguide transmission interface II The polarization source III and the polarization source IV are arranged on the bisector of the included angle, and the polarization source V is arranged at the intersection center of the waveguide transmission interface I and the waveguide transmission interface II.

The terminal points of the waveguide transmission interface I are respectively provided with waveguide transmission port A and waveguide transmission port B, and the terminal points of the waveguide transmission interface II are respectively provided with waveguide transmission port C and waveguide transmission port D; lattice mediocre photonic crystal units, and the non-mediocre topological region is composed of graphene-like lattice mediocre photonic crystal units.

 a为类石墨烯晶格常数1000nm；温下空气折射率为1，参数

Both the topological graphene-like non-trivial photonic lattice unit and the topological mediocre photonic lattice unit are composed of cylindrical silicon rods; the cylindrical silicon rods have a radius of 0.11a, a height of a, and a refractive index of

a is the graphene-like lattice constant of 1000nm; the refractive index of air at temperature is 1, and the parameter

The topologically non-trivial photonic lattice unit is composed of cylindrical silicon rods and meets the constraint condition: t ₁ >1/3a; the topologically mediocre photonic lattice unit is composed of cylindrical silicon rods and meets the constraint condition: t ₁ < 1/3a, where t ₁ represents the distance of the nearest dielectric column between adjacent lattice units.

Taking the lower left corner of the codable multifunctional all-dielectric topology waveguide switch as the origin, the starting coordinates of the waveguide transmission interface I are (0, 9.75L), and the end coordinates are (18.5a, 9.75L); the starting coordinates of the waveguide transmission interface II are (7.5a, 0), the end point coordinates are (13.5a, 18L), and the angle between the waveguide transmission interface I16 and the waveguide transmission interface II17 is 60°.

The polarization source I, polarization source II, polarization source III, polarization source IV and polarization source V are chiral sources with circular polarization, and the chiral sources are composed of four linearly polarized antennas arranged in a square.

Taking the lower left corner of the schematic diagram of the coded multifunctional all-dielectric topological waveguide state switch as the origin, the coordinates of the polarization source I are (2.5a, 9.75L), the coordinates of the polarization source II are (8.5a, 3L), and the coordinates of the polarization source III is (10.6 a, 10.05L), the coordinates of the polarization source IV are (10.4a, 9.45L), the coordinates of the polarization source V at the intersection of the interface are (10.5 a, 9.75L), and the coordinates of the waveguide transmission port A are (0, 9.75L), the coordinates of waveguide transmission port B are (18.5a,9.75L), the coordinates of waveguide transmission port C are (7.5a,0), and the coordinates of waveguide transmission port D are (13.5a, 18L).

The method of realizing waveguide transmission is: the opening of the polarization source I, the polarization source II, the polarization source III, the polarization source IV and the polarization source V at the intersection of the interface is set to 1, the off is set to 0, the left-handed setting is 0, and the right-handed setting is 1, the opening of waveguide transmission port A, waveguide transmission port B, waveguide transmission port C and waveguide transmission port D is set to 1, the off is set to 0, and the opening and closing of the light source at each position is controlled by the digital microcircuit of the single-chip microcomputer. Right-hand rotation realizes encoding the position and polarization direction of the light source by using an external circuit, and obtains the switching status of waveguide transmission port A, waveguide transmission port B, waveguide transmission port C and waveguide transmission port D, and realizes waveguide photonic devices with different functions.

The invention designs a kind of cross waveguide interface transmission system, and finds out the special position point of the waveguide transmission light source of the system. Then encode and control the information of the light source through the digital microcircuit of the single-chip computer, such as the switch and polarization direction of a certain point light source, and finally obtain the switch status of the four ports. By changing the position of the light source and the polarization direction of the light source, the present invention can realize the functions of optical waveguide cross-interface transmission, waveguide beam splitting and multi-channel transmission. The invention can realize the multifunctional conversion of the photonic device in the integrated optical path, enriches the function of the waveguide state switch, and broadens the application prospect of the quantum optical communication.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

FIG. 1 provides an overall structure of a two-dimensional all-dielectric (silicon) topological photonic crystal encodeable multifunctional unidirectional helical boundary state waveguide switch for an implementation case of the present invention.

Fig. 2 shows the three-dimensional structure of the all-dielectric topological photonic crystal and the corresponding energy band distribution in the first Brillouin zone of the topological photonic crystal in the implementation case of the present invention.

Fig. 2(a) Schematic diagram of the structure of the three-dimensional graphene-like topological photonic crystal of the present invention.

Fig. 2bI is the dispersion energy band diagram of the first Brillouin zone topological photonic crystal in the present invention when δt=-0.1.

Fig. 2bII is the dispersion energy band diagram of the topological photonic crystal in the first Brillouin zone when δt=0 in the present invention.

Fig. 2bIII is the dispersion band diagram of the topological photonic crystal in the first Brillouin zone when δt=0.1 in the present invention.

Fig. 3 is a transmission energy band diagram of a unidirectional helical boundary state waveguide in an embodiment of the present invention.

Fig. 4 is the electric field distribution diagram of TM mode light wave transmission when the polarization source I1 and the polarization source II2 in the embodiment of the present invention have frequency f=0.4788c/a, where c is the speed of light in vacuum.

Fig. 5 is the electric field distribution diagram of the TM mode light wave transmission and the corresponding Poynting vector when the polarization source III3 and the polarization source IV4 in the embodiment of the present invention have a frequency f=0.4788c/a.

Fig. 6(a) is the polarization source V5 in the embodiment of the present invention, when the frequency f=0.4788c/a, the TM mode light wave transmission electric field distribution diagram and the corresponding Poynting vector and the waveguide at the waveguide transmission interface I and waveguide transmission interface II The transmission normalized electric field strength.

Fig. 6(b) shows the transmission normalized electric field intensity of the waveguide of the present invention at the waveguide transmission interface I and the waveguide transmission interface II.

Table 1 shows the waveguide switches of all ports A, B, C, and D when the frequency f=0.4788c/a for polarization source I and polarization source II in the embodiment of the present invention.

Table 2 shows the waveguide switches of all ports A, B, C, and D when the frequency f=0.4788c/a of polarization source III and polarization source IV in the embodiment of the present invention.

Table 3 shows the waveguide switches of all ports A, B, C, and D when the polarization source V in the embodiment of the present invention has a frequency f=0.4788c/a.

The names of the components corresponding to the corresponding reference numerals in the figure are: 1 is the polarization source I, 2 is the polarization source II, 3 is the polarization source III, 4 is the polarization source IV, 5 is the polarization source V at the interface intersection center, 6 is the waveguide transmission port A, 7 is the waveguide transmission port B, 8 is the waveguide transmission port C, 9 is the waveguide transmission port D, 10 is the supercell structure, 11 is the topological non-trivial photonic lattice unit, 12 is the topological non-trivial photonic lattice Unit 13 is the non-trivial topological region, 14 is the mediocre topological region, 15 is the cylindrical silicon rod, 16 is the waveguide transmission interface I, 17 is the waveguide transmission interface II, and 18 is the bisector of the interface angle.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

As shown in Fig. 1, a kind of codeable multifunctional all-dielectric topological waveguide state switch comprises the cylindrical silicon rod 15, which constitutes a topological non-trivial photonic crystal lattice unit 11 and a topological non-trivial photonic crystal lattice unit 11 with a graphene-like structure. The lattice unit 12, the topological non-trivial photonic lattice unit 11 and the topological non-trivial photonic lattice unit 12 respectively construct the topological non-trivial topological zone 13 (Non-Trivial Zone, NTZ) and the non-trivial topological zone 14 (Trivial Zone, TZ). The mediocre region and the non-mediocre region are arranged alternately to form a cross-like waveguide transmission interface I16 and a waveguide transmission interface II17, and the waveguide topology switch has four topological domains in total. Set the chiral polarization source I1 and the polarization source II2 on the waveguide transmission interface I16 and the waveguide transmission interface II17, set the chiral polarization source III3 and the polarization source on the bisector (60°) of the angle between the waveguide transmission interface I16 and the waveguide transmission interface II17 IV4, set the polarization source V5 at the intersection center of the interface at the intersection center of the waveguide transmission interface I16 and the waveguide transmission interface II17. The waveguide transmission state is characterized at waveguide transmission port A 6 , waveguide transmission port B 7 , waveguide transmission port C 8 and waveguide transmission port D 9 .

Specifically, both the non-mediocre topological region 13 and the mediocre topological region 14 are composed of a graphene-like topological non-trivial photonic crystal unit 11 and a mediocre photonic crystal unit 12 constructed by all-dielectric cylindrical silicon rod groups, and the radius of the cylindrical silicon rod 15 is 0.11a, the height is a. In the topological photonic crystal lattice unit, t ₀ represents the distance between the nearest adjacent dielectric columns in each topological lattice unit, and t ₁ represents the distance between the nearest adjacent dielectric pillars between adjacent lattice units. Wherein, t ₀ =t ₁ =1/3a is the key distance. If t ₁ >1/3a, it is called non-trivial topological photonic crystal; if t ₁ <1/3a, it is called mediocre topological photonic crystal. In the present invention, δt=(t ₁ -t ₀ )/t ₀ is used to represent the deformation amount under the condition of not changing the graphene-like C _6v lattice, and δt>0 is called non-trivial topology photonic crystal; δt<0 is called mediocre topology Photonic crystals. Wherein the graphene-like topological non-trivial photonic lattice unit 11, δt=0.1; the graphene-like topological mediocre photonic lattice unit 12, where δt=-0.1. Wherein the graphene-like lattice constant a is 1000nm. The chiral circularly polarized light source is composed of 4 linearly polarized antennas arranged in a square, and its phase is 90°increasing or decreasing. Among them, LCP/RCP means reverse/clockwise circular polarization. As shown in the structure diagram of Figure 1, the lower left corner is the origin, the coordinates of the polarization source I1 are (2.5a, 9.75L), the coordinates of the polarization source II2 are (8.5a, 3L), and the coordinates of the polarization source III3 are (10.6a, 10.05L), the coordinates of the polarization source IV4 are (10.4a, 9.45L), and the coordinates of the polarization source V5 at the intersection center of the interface are (10.5a, 9.75L). The starting point coordinates of the waveguide transmission interface I16 are (0, 9.75L), and the end point coordinates are (18.5a, 9.75L); the starting point coordinates of the waveguide transmission interface II17 are (7.5a, 0), and the end point coordinates are (13.5a, 18L) , the angle between the waveguide transmission interface I16 and the waveguide transmission interface II17 is 60°. Waveguide transmission interface I16 endpoint is provided with waveguide transmission port A6, waveguide transmission port B7, waveguide transmission interface II17 endpoint is provided with waveguide transmission port C8, waveguide transmission port D9, the coordinates of waveguide transmission port A6 is (0, 9.75L), waveguide The coordinates of the transmission port B7 are (18.5a, 9.75L), the coordinates of the waveguide transmission port C8 are (7.5a, 0), and the coordinates of the waveguide transmission port D9 are (13.5a, 18L).

As shown in Figure 2(a), the figure shows the three-dimensional structure of the all-dielectric topological photonic crystal and the corresponding energy band distribution in the first Brillouin zone of the topological photonic crystal. Specifically, in the present invention, δt=(t ₁ -t ₀ )/t ₀ is used to represent the deformation amount under the condition of not changing the graphene-like C _6v lattice. As shown in Figure 2bI, when δt=-0.1, the lattice is a mediocre topological photonic crystal unit structure, the energy band distribution in the reciprocal vector momentum space is calculated in the first Brillouin, and the double degenerate p energy band and d energy bands are separated at the Γ point, and "Dirac cones" disappear. As shown in Figure 2bII, when δt=0, the lattice is a mediocre topological photonic crystal unit structure, and the energy band distribution in the reciprocal vector momentum space is calculated in the first Brillouin, the doubly degenerate p-band and The d energy band degenerates at the Γ point, forming a quadruple degeneracy of the photon energy band, and "Dirac cones" appear. As shown in Figure 2bIII, when δt=0.1, the lattice is a non-trivial topological photonic crystal unit structure, and the energy band distribution in the lattice momentum space is calculated in the first Brillouin, the doubly degenerate p-band and The d energy bands are separated again at the Γ point, the "Dirac cones" disappear, and the energy bands are reversed.

As shown in Figure 3, the supercell structure 10 (a×9L) of the codable multifunctional all-dielectric topological waveguide state switch is shown in the figure, and the energy band dispersion projected in the wave vector space within a lattice period can be obtained by calculating it From this curve, it can be seen that there are two upper and lower dispersion curves in the photonic crystal band gap, and they are symmetrical about kx=0. It can be judged from the dispersion curve that the group velocity of the topological boundary state is unidirectional.

Codable multifunctional all-dielectric topological waveguide state switch can realize the functions of optical waveguide cross-boundary transmission, waveguide beam splitting and multi-channel transmission by controlling the switching and polarization directions (left-handed and right-handed) of polarization sources at different positions. Specifically, as shown in Figure 4, when the frequency f=0.4788c/a, the polarization source I1 and polarization source II2 are shown in the unidirectional helical boundary state waveguide transmission situation, according to the symmetry of the waveguide state switch, the center symmetrical position coordinates can be obtained Waveguide transmission conditions The transmission conditions of all ports are shown in Table 1. According to the transmission situation of each port, it can be seen that the present invention realizes the cross-boundary transmission.

Table 1

As shown in Figure 5, the figure shows the unidirectional helical boundary state waveguide transmission situation of the waveguide state switch under the action of the polarization source III3 and the polarization source IV4 when the frequency f=0.4788c/a. According to the symmetry of the waveguide state switch, it can be The waveguide transmission conditions of the symmetrical position coordinates of the center of the waveguide state switch and the transmission conditions of all ports are shown in Table 2. According to the transmission situation of each port, it can be seen that the present invention designs and realizes the V-shaped beam splitting function of the waveguide.

Table 2

As shown in Fig. 6, (a) shows the unidirectional helical boundary state waveguide transmission under the action of the polarization source V5 at the interface intersection center when the frequency f = 0.4788c/a. As shown in Table 3, no matter for different waveguide transmission boundaries or different polarization directions of chiral sources, waveguide transmission port A6, waveguide transmission port B7, waveguide transmission port C8 and waveguide transmission port D9 waveguide transmission normalized electric field The energy intensity remains unchanged, and according to the port output, it can be seen that the design of the present invention realizes the multi-channel transmission function of the waveguide. It can be seen from Fig. 6(b) that the energy of the four-port waveguides is roughly equal and is not affected by the polarization direction of the chiral source and different interfaces, where the peak only indicates the position of the light source in practice.

table 3

In the coded multifunctional all-dielectric topology waveguide state switch, the left-handed polarization direction of the polarization source is set to 0, the right-handed is set to 1, the opening of the waveguide transmission port is 1, and the closed is 0. The left-handed and right-handed polarization of the light source is controlled by a single-chip digital microcircuit In the case of right-hand rotation, the external circuit can be used to encode the position and polarization direction of the light source, and the four port switches can be obtained to realize waveguide photonic devices with different functions. For example, the information of the location of the polarization source I1 can be coded as 01, 1 means on, 0 means off; The transmission port B7, the waveguide transmission port C8 and the waveguide transmission port D9 are arranged in sequence. Then the coding control of the position of the polarization source I1 can be expressed as 101000, 110010. Only one light source is allowed to work at a time, and the switching status of other light sources is set to "0". The light source is controlled by a single-chip microcomputer to realize the cross-boundary transmission of light waves, the beam splitting function of the waveguide and the multi-channel transmission function of the waveguide. As shown in FIG. 4 , the polarization source I1 and the polarization source II2 can realize the transmission from the first interface to the second interface. As shown in Fig. 5, the polarization source III3 and the polarization IV4 can realize V-type beam splitting. As shown in Figure 6, the polarization source V5 can realize four-channel optical waveguide transmission.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of the present invention. within the scope of protection.

Claims (6)

1. A multifunctional full-dielectric topological waveguide state switch capable of being coded is characterized in that: comprises a non-mediocre topological area (13) and a mediocre topological area (14); the non-plain topological area (13) and the plain topological area (14) are arranged in a cross-like staggered manner to form a waveguide transmission interface I (16) and a waveguide transmission interface II (17); a polarization source I (1) is arranged on the waveguide transmission interface I (16), a polarization source II (2) is arranged on the waveguide transmission interface II (17), a polarization source III (3) and a polarization source IV (4) are arranged on a bisector of an included angle between the waveguide transmission interface I (16) and the waveguide transmission interface II (17), and a polarization source V (5) is arranged at the intersection center of the waveguide transmission interface I (16) and the waveguide transmission interface II (17);

the end points of the waveguide transmission interface I (16) are respectively provided with a waveguide transmission port A (6) and a waveguide transmission port B (7), and the end points of the waveguide transmission interface II (17) are respectively provided with a waveguide transmission port C (8) and a waveguide transmission port D (9);

the non-mediocre topological area (13) is composed of graphene-like lattice topology non-mediocre photonic lattice units (11), and the mediocre topological area (14) is composed of graphene-like lattice topology mediocre photonic lattice units (12);

the method for realizing waveguide transmission comprises the following steps: the polarization source I (1), the polarization source II (2), the polarization source III (3), the polarization source IV (4) and the polarization source V (5) at the interface intersection are set to be 1, the switch is set to be 0, the left-hand rotation is set to be 0, the right-hand rotation is set to be 1, the waveguide transmission port A (6), the waveguide transmission port B (7), the waveguide transmission port C (8) and the waveguide transmission port D (9) are set to be 1, the switch is set to be 0, the on-off of the light source at each position is controlled through a single chip microcomputer digital micro circuit, the left-hand rotation and the right-hand rotation are controlled, the encoding of the position and the polarization direction of the light source by using an external circuit is realized, the switching conditions of the waveguide transmission port A (6), the waveguide transmission port B (7), the waveguide transmission port C (8) and the waveguide transmission port D (9) are obtained, and waveguide photonic devices with different functions are realized.

2. The encodable multifunctional all-dielectric topological waveguide state switch according to claim 1, wherein: the topological non-mediocre photonic crystal lattice unit (11) and the topological mediocre photonic crystal lattice unit (12) are both composed of cylindrical silicon rods (15);

the radius of the cylindrical silicon rod (15) is 0.11aHeight ofaRefractive index of

，aIs a graphene-like lattice constant with a value of 1000nm; the refractive index of air at room temperature was 1.

3. The encodable multifunctional all-dielectric topological waveguide state switch according to claim 2, wherein: the topological non-trivial photonic lattice unit (11) satisfies the constraint:t ₁ ＞(1/3)a(ii) a Topologically mediocre photonic lattice cells (12) meet the constraint:t ₁ ＜(1/3)awhereint ₁ Representing the distance of the nearest neighbor dielectric pillar between adjacent lattice cells.

4. The encodable multifunctional all-dielectric topological waveguide state switch according to claim 2 or 3, characterized in that: the left lower corner of the encodable multifunctional all-dielectric topological waveguide state switch structure is taken as an origin, and the coordinates of the starting point of a waveguide transmission interface I (16) are (0, 9.75)L) The coordinate of the end point is (18.5)a，9.75L) (ii) a The starting point coordinate of the waveguide transmission interface II (17) is (7.5)a0), end point coordinate is (13.5)a，18L) The included angle between the waveguide transmission interface I (16) and the waveguide transmission interface II (17) is 60 degrees,Lis the side length of the graphene-like lattice,L=

。

5. the encodable multifunctional all-dielectric topological waveguide state switch according to claim 4, wherein: the polarization source I (1), the polarization source II (2), the polarization source III (3), the polarization source IV (4) and the polarization source V (5) are chiral sources with circular polarization, and the chiral sources are composed of 4 linear polarization antennas which are arranged in a square shape.

6. The encodable multifunctional all-dielectric topological waveguide dynamic switch according to claim 5, wherein: the lower left corner of the structure of the multifunctional full-dielectric topological waveguide dynamic switch capable of coding is taken as the origin, and the coordinate of the polarization source I (1) is (2.5)a，9.75L) The coordinate of the polarization source II (2) is (8.5)a, 3L) The coordinate of the polarization source III (3) is (10.6)a, 10.05L) Polarized source IV(4) Has the coordinate of (10.4)a, 9.45L) The coordinate of the polarization source V (5) at the interface intersection is (10.5)a, 9.75L) The coordinates of the waveguide transmission port A (6) are (0, 9.75)L) The coordinate of the waveguide transmission port B (7) is (18.5)a, 9.75L) The coordinate of the waveguide transmission port C (8) is (7.5)a0), the coordinate of the waveguide transmission port D (9) is (13.5)a, 18L)。

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