An optical JK flip-flop device based on superstructures

Abstract

The application provides an optical JK flip-flop device based on superstructure, which is suitable for realizing optical coding in a specific frequency band and realizing the function of JK flip-flop. The substrate of the device is silicon (Si), the input port is composed of lithium niobate (LiNbO3), the output port is composed of silicon nitride (Si3N4), the temperature control port is composed of barium tungstate (BaWO4), the chemical potential control port is composed of aluminum nitride (AlN), the main key part adopts a symmetric superstructure with double-face characteristics, and different transmission peaks can be generated under different electromagnetic wave incidence angles. The symmetric superstructure with double-face characteristics comprises upper and lower substrates, left and right substrates, aerogel layers, plasma thin film layers and vanadium dioxide (VO2) thin film layers. In the frequency band of 49 GHz-51 GHz, the difference between forward incidence and backward incidence is adjusted to realize the JK flip-flop through coding.

Description

TECHNICAL FIELD

[0001] The application belongs to the field of electromagnetic wave modulation, and particularly relates to an optical JK flip-flop device based on a superstructure. BACKGROUND

[0002] With the increasing demand for data processing accuracy, speed and capacity in future cities, traditional electronic devices gradually show limitations. Electromagnetic wave modulation technology changes some characteristics of the carrier to achieve long-distance and efficient data transmission, and plays an important role in the field of communication. From real-time processing of traffic flow data in intelligent transportation systems to integration of various city operation information in smart city management centers, strict requirements are put forward for the accuracy, speed and capacity of data processing. Although electromagnetic wave modulation technology has achieved remarkable results in the field of communication and realized long-distance and efficient data transmission, further improvement of data processing capacity is imminent in the face of growing data demand.

[0003] In the development history of modern digital technology, traditional circuit logic coding is the cornerstone of building digital systems. Early computers were based on vacuum tubes to build logic circuits, which were bulky and high in energy consumption, but laid the foundation for digital computing. With the development of semiconductor technology, transistors and integrated circuits have emerged, and the application scenarios of traditional circuit logic coding have been continuously expanded. In computers, from instruction processing of central processing units to data storage and reading of memories; in the field of communication, from signal processing of early telephone exchanges to data transmission control of today's 5G communication base stations, traditional circuit logic coding plays a key role.

[0004] However, with the approach of physical limits, there are still problems to be solved in terms of data processing speed, bandwidth and energy consumption of traditional circuit logic coding. Optical logic circuits, with the unique advantages of photons such as fast transmission speed and large information carrying capacity, show great potential in logic operation and information coding. The propagation speed of light is much faster than the transmission speed of electrons in circuits, and it has rich dimensions such as wavelength and polarization that can be used to encode information. Superstructure, as an artificially designed micro-nano structure material, can flexibly control the electric field, magnetic field and phase of light, providing a new way to realize optical JK flip-flop.

[0005] After searching, the Chinese patent with publication number CN119437040A disclosed a structured light three-dimensional detection system, method and device based on optical phased array coding on February 14, 2025. The structure includes an optical phased array module, an acquisition module and a control module. It solves the problem of being unable to adjust the structured light source, and improves the flexibility and controllability of three-dimensional detection.

[0006] In summary, the main problems faced by traditional circuit logic encoding devices include slow encoding speed, limited modulation frequency band, etc. These challenges limit its function in modern information processing and widespread application in other scenarios, therefore, we designed a new optical superstructure JK flip-flop device, based on the mirror symmetry structure of magnetized plasma, provides an effective solution. This device not only shows significant advantages in terms of tunable, fast transmission speed, etc., opens up new paths for the modulation of electromagnetic waves to achieve encoding. SUMMARY

[0007] To solve the above technical problems, the present application provides an optical JK flip-flop device based on superstructure, which has non-reciprocal characteristics. Specifically, the non-reciprocal characteristic refers to the fact that the device exhibits different response characteristics to electromagnetic waves of different incident directions, thereby realizing the modulation function of electromagnetic waves. The device designed by the present application can provide adjustable transmission characteristics in a specific waveband range (49 THz~51 THz). Specifically, when the electromagnetic wave is incident at an angle of 70° perpendicular to the normal direction, the electromagnetic wave incident in the front and back directions may exhibit differences in transmission characteristics under different magnetic field and temperature characteristics. Define VO2 temperature as 30 ℃ as the input low level, the magnetic field size at this time is 0.001 T, and the non-reciprocal transmission characteristics of the spectrum are defined as logic value "1", and vice versa. Define VO2 temperature as 85 ℃ as the input high level, at this time the resonance edge will become wider, the resonance characteristics will be weakened, but the non-reciprocal characteristics still define the logic value "1", and vice versa. Finally, by adjusting the timing change of the VO2 temperature, a timing level input is formed, and a JK flip-flop can be combined to realize the timing logic function. It expands the field of optical encoding and provides a new idea for existing encoding technology.

[0008] To achieve the above object, the technical scheme adopted by the present application is:

[0009] An optical JK flip-flop device based on superstructure, which is packaged by four substrates, the upper and lower substrates are magnetic substrates with the same characteristics, and the left and right substrates are transparent conductive substrates. The main part surrounded by the substrate is two quasi-periodic structures for realizing JK flip-flop, and the electromagnetic wave is incident to the inside of the device along the arrangement direction of the quasi-periodic structure.

[0010] The device is encapsulated by four substrates. The top and bottom substrates are magnetic substrates with the same properties, capable of conducting magnetic fields. The left and right substrates are transparent conductive substrates, exhibiting good light transmittance for electromagnetic waves in specific wavelengths. The core component, surrounded by the substrates, consists of two quasi-periodic structures that enable JK triggering. Electromagnetic waves are incident into the device along the alignment direction of these quasi-periodic structures. The core component, surrounded by the substrates, is a mirror-symmetrical layer of aerogel and magnetized plasma, interspersed with VO2. The introduction of magnetized plasma generates a magneto-optical effect, promoting the realization of non-reciprocal transmission characteristics and enabling the manipulation of electromagnetic waves.

[0011] Within the 49 THz to 51 THz frequency band, when electromagnetic waves are incident on air at a direction deviating 70° from the normals of the left and right substrates, the response of this device to electromagnetic waves differs significantly under forward and reverse incident conditions. Specifically, we examine whether the transmission characteristics of the device are the same under these forward and reverse incident conditions. For both forward and reverse incident electromagnetic waves, the code "0" is defined as having the same transmission characteristics, and "1" as having different transmission characteristics. These codes "1" and "0" respectively reflect the non-reciprocal nature of the device, enabling it to exhibit different electromagnetic wave modulation effects under different incident directions.

[0012] Furthermore, the quasi-periodic structure consists of an aerogel layer (A layer) and a plasma thin film layer (B layer) arranged in a specific periodic pattern, with a vanadium dioxide (VO2) layer inserted in the middle (C layer), meaning the lateral arrangement of the medium is (A-B1). N -C-(A-B1) N -(BA) N -C-(BA) N The optical metastructure is composed of materials arranged in a mirror-symmetric manner. N is the number of cycles of the dielectric material arrangement. N=9 indicates that the cycle order of the aerogel and plasma thin film layers is 9.

[0013] The introduction of this magnetic medium and the mirror-symmetric structure help to analyze the transmission characteristics of electromagnetic waves and enable encoding.

[0014] Furthermore, the aerogel layer has a refractive index parameter of: n a =1.05, thickness parameter is d a =0.015 m, the aerogel layer is etched with a diamond pattern, which helps electromagnetic waves propagate.

[0015] Furthermore, the upper and lower substrates and the left and right substrates are all made of AZO substrate, and the thickness of all substrates is 1 micrometer.

[0016] Furthermore, the material properties of the plasma thin film layer are excited by an external magnetic field. The magnetized plasma is modeled using the Drude model, with a collision frequency of 0.0004 times the cyclotron frequency and a thickness parameter of [missing information]. d b =6.5 mm.

[0017] Furthermore, the vanadium dioxide VO2 layer has a thickness of 1 mm, and the Drude-Lorentz dielectric constant model is used to implement pulse signal input with periodic logic levels at temperatures of 30℃ and 85℃.

[0018] Compared with the prior art, the present invention has the following technical effects:

[0019] This invention utilizes magnetized plasma to achieve obvious non-reciprocal characteristics, which can be used as a standard for determining logic values.

[0020] This invention utilizes VO2 as a defect peak to determine non-reciprocal characteristics. Furthermore, VO2 produces resonance peaks with different full width at half maximum (FWHM) at different temperatures, allowing for significant dynamic control of transmission characteristics.

[0021] The main body of this invention uses layered superstructures stacked together, which results in a compact structure that is easier to manufacture and process, and is beneficial for industrial mass production. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of an optical JK trigger device based on a metastructure according to an embodiment of the present invention.

[0023] Figure 2 This is a logic circuit analog diagram of an optical JK flip-flop device based on a metastructure according to an embodiment of the present invention;

[0024] Figure 3 This is a logic signal diagram of an optical JK flip-flop device based on a superstructure according to an embodiment of the present invention;

[0025] Figure 4 The logic value "0" is given by an optical JK trigger device based on a metastructure according to an embodiment of the present invention under a low-level magnetic field of 0.001T at 30°C.

[0026] Figure 5 The logic value "1" of an optical JK trigger device based on a metastructure according to an embodiment of the present invention is given under a low-level magnetic field of 0.3T at 30°C.

[0027] Figure 6 The logic value "0" is given by an optical JK trigger device based on a metastructure according to an embodiment of the present invention, under a high-level magnetic field of 0.001T at 85°C.

[0028] Figure 7 The logic value "1" is given by an optical JK trigger device based on a metastructure according to an embodiment of the present invention, under a high-level magnetic field of 0.3T at 85°C.

[0029] Figure 8 This is a simulated functional diagram of an optical JK trigger device based on a metastructure according to an embodiment of the present invention;

[0030] Figure 9 This is a diagram showing the electromagnetic wave incident situation of an optical JK trigger device based on a metastructure according to an embodiment of the present invention.

[0031] In the figure: 1-A symmetrical superstructure with bifacial properties; 2-Lithium niobate (LiNbO3); 3-Silicon nitride (Si3N4); 4-Barium tungstate (BaWO4); 5-Aluminum nitride (AlN); 6-Silicon nitride (Si3N4); 7-Lithium niobate (LiNbO3); 8-Aerogel layer; 9-Magnetized plasma layer; 10-VO2 layer; 11-Magnetic substrate; 12-Transparent conductive substrate; 13-Silicon (Si). Detailed Implementation

[0032] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0033] This invention relates to an optical JK trigger device based on a metastructure. The main body of the device comprises an aerogel layer, a plasma layer, and a VO2 layer. In this invention, non-reciprocal properties are utilized to achieve different non-reciprocal resonance peaks at different temperatures for electromagnetic waves under different incident directions.

[0034] When the entire device is operating, if the frequency of the incident electromagnetic wave is within the range of 49 THz to 51 THz, the incident angle is 70°, the temperature is set to 30°C, and the magnetic field is set to 0.001 T, the device exhibits a reciprocal transmission effect, defined as a logical code value of "0". At a magnetic field of 0.3 T, non-reciprocal transmission is achieved, defined as a logical code value of "1". Similarly, when the temperature is set to 85°C, the coding is similar: a magnetic field of 0.001 T achieves a reciprocal transmission effect with a logical value of "0", and a magnetic field of 0.3 T achieves a non-reciprocal transmission effect with a logical value of "1".

[0035] like Figure 1 As shown, the overall media arrangement order is (AB). N -C-(AB) N -(BA) N -C-(BA) NThe number of cycles N=9. The dielectric constant of the magnetized plasma was obtained by fitting the Drude model. The thickness of the magnetized plasma film was 6.5 mm. The refractive index of the aerogel was 1.05 and the thickness was 0.015 m. The thickness of the VO2 layer was 1 mm. The Drude-Lorentz dielectric constant model was adopted.

[0036] like Figure 2 The diagram shows the circuit diagram of a JK flip-flop. It operates based on a clock signal, with temperature changes of 30°C and 85°C representing the high and low levels of the clock signal, respectively. The output state is changed by the input signals J and K. Its output has two complementary states, represented by "Q" and "QNOT".

[0037] like Figure 3 The logic signal diagram shown has an output state Q of “00011001100” when the level of the constant signal is “0101010101010”.

[0038] like Figure 4 As shown, when the frequency of the electromagnetic wave is between 49 THz and 51 THz, the temperature is 30℃, the magnetic field is 0.001 T, and the reciprocal transmission is represented by a code value of "0".

[0039] like Figure 5 As shown, a magnetic field of 0.3 T represents a non-reciprocal transmission signal with a coded value of "1".

[0040] like Figure 6 As shown, with a temperature of 85℃ and a magnetic field of 0.001 T, reciprocal transmission is represented by a code value of "0".

[0041] like Figure 7 As shown, when the JK trigger is working, the magnetic field is 0.3 T, and the non-reciprocal transmission represents the encoded value as "1".

[0042] like Figure 8 As shown, the proposed JK trigger functional diagram includes an input port composed of 2- and 7-lithium niobate, an output port composed of 3- and 6-silicon nitride, a temperature control port composed of 4-barium tungstate, a chemical potential control port composed of 5-aluminum nitride, and its main function is a symmetric superconductor with 1-bifacial characteristics.

[0043] like Figure 9 As shown, when the main structure is working, the direction of the electromagnetic wave is as follows: forward incidence indicates along + x Incident along the axial direction, and incident in the opposite direction means incident along the opposite direction. The internal dielectric layers are represented as follows: 8-aerogel layer; 9-magnetized plasma layer; 10-VO2 layer; 11-magnetic substrate; 12-transparent conductive substrate; 13-silicon (Si).

[0044] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any other way. Any modifications or equivalent changes made based on the technical essence of the present invention shall still fall within the scope of protection claimed by the present invention.

Claims

1. An optical JK flip-flop device based on super-oscillator, characterized by: Four substrates are packaged, the upper and lower substrates are magnetic substrates with the same characteristics, the left and right substrates are transparent conductive substrates, the main part surrounded by the substrates is two quasi-periodic structures for realizing JK trigger, and electromagnetic waves are incident to the inside of the device along the arrangement direction of the quasi-periodic structure. The quasi-periodic structure follows a specific periodic pattern in the arrangement order of A layer as aerogel layer and B layer as plasmonic thin film layer, and the intermediate C layer is inserted into the transverse arrangement order of vanadium dioxide VO2 layer, i.e. the dielectric, which is (A-B1) N -C-(A-B1) N -(B-A) N -C-(B-A) N In a similar mirror-symmetrical arrangement form, the optical superstructure is composed as a whole, N is the period number of the arrangement of the dielectric material, and N=9 indicates that the period order of the aerogel and the plasmonic thin film layer is 9.

2. An optical JK flip-flop device based on super-oscillator according to claim 1, wherein: The aerogel layer has a refractive index parameter n a = 1.05, and a thickness parameter d a = 0.015 m.

3. An optical JK flip-flop device based on super-oscillator according to claim 2, wherein: A rhombic pattern is etched on the aerogel layer.

4. The super-oscillator based optical JK flip-flop device of claim 1, wherein: The upper and lower substrates and the left and right substrates all adopt AZO substrates with a specific model, and the thickness of all the substrates is 1 micrometer.

5. The super-oscillator based optical JK flip-flop device according to claim 1, wherein: The plasma thin film layer adds a magnetic field to excite material properties, magnetized plasma adopts Drude model, collision frequency of plasma is 0.0004 times of cyclotron frequency, thickness parameter is d b =6.5 mm.

6. The super-oscillator based optical JK flip-flop device of claim 1, wherein: The thickness of the vanadium dioxide VO2 layer is 1 mm, the dielectric constant model of Drude-Lorentz is adopted, and the temperature of 30 DEG C and 85 DEG C is taken as the cycle logic level to realize pulse signal input.

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