A Y-branch waveguide beam splitter modeling method, device, equipment and storage medium

Abstract

The application provides a Y-branch waveguide beam splitter modeling method, device and equipment and a storage medium, relates to the technical field of integrated photonics, and comprises the following steps: acquiring output power target proportion values of first and second output waveguides; acquiring basic parameters of a Y-branch waveguide beam splitter, and establishing an initial model of the Y-branch waveguide beam splitter according to the basic parameters; and adjusting the position of a model input waveguide according to the target proportion values to generate a Y-branch waveguide beam splitter model matched with the target proportion values. The application aims to solve the problems of the prior art, such as high control precision, high control difficulty, high loss and being not conducive to the production of compact devices.

Description

Technical Field

[0001] This invention relates to the field of integrated photonics technology, specifically to a method, apparatus, device, and storage medium for modeling a Y-branch waveguide beam splitter. Background Technology

[0002] In recent years, with the rapid development of the Internet of Things (IoT), fiber optic communication systems, as a crucial foundation for IoT, have received increasing attention. In the long-haul backbone network sector, the maturity and development of optical transmission technology have led to a global surge in the construction of trunk transmission networks, resulting in rapid growth in transmission bandwidth and capacity. Along with the development of fiber optic communication systems, the development of optical devices also faces both opportunities and challenges. Developing high-performance, low-cost optical devices has become a primary concern.

[0003] In the field of optical device technology, optical power beam splitters have a wide range of applications. Their main function is to split a beam of light into two beams with a certain power ratio for light processing, monitoring, and other purposes. Currently, the main structural forms of optical power beam splitters on the market include Y-branch waveguide structures, photonic crystal waveguide structures, surface plasmonic waveguide structures, and multimode interference waveguide structures, among other implementation schemes.

[0004] Among them, Y-branch waveguide structures are divided into symmetrical Y-branch and asymmetrical Y-branch. Symmetrical Y-branch waveguides are devices that evenly distribute optical power, and their research has been quite extensive. Asymmetrical Y-branch waveguides are unit devices that achieve a specific beam splitting ratio for optical output. Existing asymmetrical Y-branch waveguides are mainly divided into three types: translation-biased, microprism-based, and deflection-angle asymmetrical. The fabrication methods of these three types of asymmetrical Y-branch waveguides all involve modifying the branch arms to adjust the beam splitting ratio of the optical power output. However, these methods each have drawbacks such as high control precision, high control difficulty, large losses, and difficulty in fabricating compact devices.

[0005] In view of the above, this application is hereby submitted. Summary of the Invention

[0006] In view of this, the purpose of the present invention is to provide a Y-branch waveguide beam splitter modeling method, apparatus, device and storage medium, which can effectively solve the problems of high control precision, high control difficulty, large loss and unfavorable to the fabrication of compact devices in the existing asymmetric Y-branch waveguide fabrication methods.

[0007] This invention discloses a modeling method for a Y-branch waveguide beam splitter, comprising:

[0008] Obtain the target ratio of the output power of the first output waveguide and the second output waveguide;

[0009] Obtain the basic parameters of the Y-branch waveguide beamsplitter, and establish an initial model of the Y-branch waveguide beamsplitter based on the basic parameters;

[0010] Based on the target scale value, the position of the model input waveguide is adjusted to generate a Y-branch waveguide beam splitter model that matches the target scale value.

[0011] Preferably, the position of the model input waveguide is adjusted according to the target scale value to generate a Y-branch waveguide beam splitter model that matches the target scale value, specifically as follows:

[0012] The output power of the first output waveguide and the output power of the second output waveguide are compared.

[0013] When the target output power value of the first output waveguide is greater than the target output power value of the second output waveguide, the position of the connection end between the initial model input waveguide and the output waveguide remains unchanged, and the initial model input waveguide moves downward in a circular motion with the end away from the connection end as the center, until the output power ratio of the first output waveguide and the second output waveguide is consistent with the target output power ratio of the first output waveguide and the second output waveguide.

[0014] Preferably, it further includes:

[0015] When the target output power value of the first output waveguide is less than the target output power value of the second output waveguide, the position of the connection end between the initial model input waveguide and the output waveguide remains unchanged, and the initial model input waveguide moves upward in a circle with the end away from the connection end as the center, until the output power ratio of the first output waveguide and the second output waveguide is consistent with the target output power ratio of the first output waveguide and the second output waveguide.

[0016] Preferably, the first output waveguide is the upper branch output waveguide of a Y-branch waveguide beam splitter.

[0017] Preferably, the second output waveguide is the lower branch output waveguide of a Y-branch waveguide beam splitter.

[0018] The present invention also provides a Y-branch waveguide beam splitter modeling device, comprising:

[0019] The target ratio value acquisition unit is used to acquire the target ratio value of the output power of the first output waveguide and the second output waveguide;

[0020] The initial model building unit is used to obtain the basic parameters of the Y-branch waveguide beam splitter and build the initial model of the Y-branch waveguide beam splitter based on the basic parameters.

[0021] The Y-branch waveguide beam splitter model generation unit is used to adjust the position of the model input waveguide according to the target scale value, and generate a Y-branch waveguide beam splitter model that matches the target scale value.

[0022] The present invention also provides a Y-branch waveguide beamsplitter modeling device, including a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor. When the processor executes the computer program, it implements the Y-branch waveguide beamsplitter modeling method as described above.

[0023] The present invention also provides a readable storage medium storing a computer program that can be executed by a processor of the device in which the storage medium is located, to implement the Y-branch waveguide beam splitter modeling method as described in any of the above claims.

[0024] In summary, the Y-branch waveguide beamsplitter modeling method, apparatus, device, and storage medium provided in this embodiment, after obtaining the target output power ratio values ​​of the first and second output waveguides of the Y-branch waveguide beamsplitter to be modeled, as well as the basic parameters of the Y-branch waveguide beamsplitter, first establishes an initial model of the Y-branch waveguide beamsplitter based on the basic parameters, and then adjusts the position of the input waveguide of the initial model according to the target ratio value, finally obtaining a Y-branch waveguide beamsplitter model that matches the target ratio value; thereby solving the problems of high control precision, high control difficulty, large loss, and unfavorable for manufacturing compact devices in the existing asymmetric Y-branch waveguide fabrication methods. Attached Figure Description

[0025] Figure 1 This is a schematic flowchart of the Y-branch waveguide beam splitter modeling method provided in an embodiment of the present invention.

[0026] Figure 2 This is a schematic diagram of the Y-branch structure provided in an embodiment of the present invention.

[0027] Figure 3 This is a schematic diagram of the module of the Y-branch waveguide beam splitter modeling device provided in an embodiment of the present invention. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to represent selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0030] Please see Figure 1 The first embodiment of the present invention provides a modeling method for a Y-branch waveguide beam splitter, comprising:

[0031] S101, Obtain the target ratio of the output power of the first output waveguide and the second output waveguide;

[0032] S102, Obtain the basic parameters of the Y-branch waveguide beam splitter, and establish the initial model of the Y-branch waveguide beam splitter based on the basic parameters;

[0033] In recent years, with the rapid development of the Internet of Things (IoT), fiber optic communication systems, as a crucial foundation for IoT, have received increasing attention. In the long-haul backbone network sector, the maturity and development of optical transmission technology have led to a global surge in the construction of trunk transmission networks, resulting in rapid growth in transmission bandwidth and capacity. Along with the development of fiber optic communication systems, the development of optical devices also faces both opportunities and challenges. Developing high-performance, low-cost optical devices has become a primary concern. Silicon-based optoelectronic devices, with their advantages of easy integration and low manufacturing costs, have attracted widespread attention from researchers in recent years. Silicon (Si) materials, as a traditional material in the microelectronics field, possess unparalleled advantages in processing technology and manufacturing costs compared to other materials, giving rise to silicon-based optoelectronic integration technology.

[0034] Optical power beamsplitters are widely used in silicon-based optoelectronic integrated chips. Their main function is to split a beam of light into two beams with a certain power ratio for light processing and monitoring. Currently, Y-branch waveguide structures on the market are divided into symmetrical and asymmetrical Y-branch types. Among them, asymmetrical Y-branch waveguides are mainly divided into three types: translation-biased, microprism-based, and deflection-angle asymmetrical. The translation-biased type changes the beam splitting ratio of the optical power output in the left and right branches of the waveguide by shifting the branch arms laterally, but the maximum beam splitting ratio is only 75.6%, and it requires high lateral precision control. The microprism-based type achieves asymmetrical optical power output by introducing high-refractive-index microprism structures at the branches, but this method leads to increased scattering loss due to the introduction of microprisms and is difficult to manufacture. The deflection-angle asymmetrical type achieves non-uniform optical power output by taking different deflection angles for the two branches of the Y-branch waveguide. Although this method is simple in design and easy to implement in terms of technology, the branch angle of the waveguide is relatively small, which is not conducive to the fabrication of compact optical waveguide devices. The above three methods for fabricating asymmetric Y-branch waveguides all involve modifying the branch arms to adjust the beam splitting ratio of the optical power output. However, each of these methods has its own drawbacks, such as high control precision, high control difficulty, large losses, and difficulty in fabricating compact devices.

[0035] Specifically, in this embodiment, based on the obtained basic parameters of the Y-branch waveguide beamsplitter, an initial model of the Y-branch waveguide beamsplitter can be established. The basic parameters include the lengths of the input waveguide and output waveguide, etc. Photons propagate along the incident waveguide direction of the initial model. The initial model can be a symmetrical structure with the Y branches, meaning that when the angles of the input waveguide and the two output waveguides are the same, the input optical power will be equally distributed among the two output waveguides. It should be noted that in other embodiments, other types of initial models can also be used; no specific limitations are made here, but all such schemes are within the protection scope of this invention.

[0036] S103, adjust the position of the model input waveguide according to the target scale value to generate a Y-branch waveguide beam splitter model that matches the target scale value.

[0037] Please see Figure 2 Specifically, in this embodiment, the position of the model input waveguide is adjusted according to the target scale value to generate a Y-branch waveguide beam splitter model that matches the target scale value, specifically as follows:

[0038] The output power of the first output waveguide and the output power of the second output waveguide are compared.

[0039] When the target output power value of the first output waveguide is greater than the target output power value of the second output waveguide, the position of the connection end between the initial model input waveguide and the output waveguide remains unchanged, and the initial model input waveguide moves downward in a circular motion with the end away from the connection end as the center, until the output power ratio of the first output waveguide and the second output waveguide is consistent with the target output power ratio of the first output waveguide and the second output waveguide.

[0040] When the target output power value of the first output waveguide is less than the target output power value of the second output waveguide, the position of the connection end between the initial model input waveguide and the output waveguide remains unchanged, and the initial model input waveguide moves upward in a circle with the end away from the connection end as the center, until the output power ratio of the first output waveguide and the second output waveguide is consistent with the target output power ratio of the first output waveguide and the second output waveguide.

[0041] In this embodiment, the obtained target output power ratio values ​​of the first and second output waveguides are compared and analyzed to determine whether the output power of the first output waveguide is greater than that of the second output waveguide. If the target output power value of the first output waveguide is greater than that of the second output waveguide, the position of the connection end between the initial model input waveguide and the output waveguide remains unchanged, and the initial model input waveguide moves downward in a circular motion with the end furthest from the connection end as the center. When the position of the model input waveguide moves downward along a preset direction (i.e., the preset direction is...), the model input waveguide continues to move downward. Figure 2 (As indicated by the dashed arrow), the optical power in the first output waveguide gradually increases, while the optical power in the second output waveguide gradually decreases. When the model input waveguide and the first output waveguide are on the same line, the power distributed in the first output waveguide is the maximum under the condition of minimum transmission loss. If the model input waveguide continues to move downward, the proportion of power distributed in the first output waveguide will continue to increase, but in this case, optical leakage will increase, which means increased optical loss.

[0042] If the target output power value of the first output waveguide is determined to be less than the target output power value of the second output waveguide, the position of the connection end between the initial model input waveguide and the output waveguide remains unchanged, and the initial model input waveguide moves upward in a circular motion with the end furthest from the connection end as the center. When the position of the model input waveguide moves upward along a preset direction (the preset direction is...), the model input waveguide continues to move upward. Figure 2(As indicated by the dashed arrow), the optical power in the second output waveguide gradually increases, while the optical power in the first output waveguide gradually decreases. When the model input waveguide and the second output waveguide are on the same line, the second output waveguide receives the maximum power while minimizing transmission loss. If the model input waveguide continues to move upwards, the proportion of power received in the second output waveguide will continue to increase, but in this case, optical leakage will increase, which means increased optical loss.

[0043] In one possible embodiment of the present invention, the first output waveguide can be the upper branch output waveguide of a Y-branch waveguide beamsplitter; the second output waveguide can be the lower branch output waveguide of a Y-branch waveguide beamsplitter. It should be noted that in other embodiments, other types of first and second output waveguides can also be used, which are not specifically limited here, but all such solutions are within the protection scope of the present invention.

[0044] In summary, after obtaining the target output power ratio values ​​of the first and second output waveguides of the Y-branch waveguide beamsplitter to be modeled, as well as the basic parameters of the Y-branch waveguide beamsplitter, an initial model of the Y-branch waveguide beamsplitter is first established based on the basic parameters. Then, the position of the input waveguide of the initial model is adjusted according to the target ratio value, and finally, a Y-branch waveguide beamsplitter model matching the target ratio value is obtained. This solves the problems of high control precision, high control difficulty, large loss, and unfavorable for manufacturing compact devices in the existing asymmetric Y-branch waveguide fabrication methods.

[0045] Please see Figure 3 A second embodiment of the present invention provides a Y-branch waveguide beam splitter modeling device, comprising:

[0046] The target ratio value acquisition unit 201 is used to acquire the target ratio value of the output power of the first output waveguide and the second output waveguide;

[0047] The initial model establishment unit 202 is used to obtain the basic parameters of the Y-branch waveguide beam splitter and establish the initial model of the Y-branch waveguide beam splitter based on the basic parameters.

[0048] Y-branch waveguide beam splitter model generation unit 203 is used to adjust the position of the model input waveguide according to the target scale value, and generate a Y-branch waveguide beam splitter model that matches the target scale value.

[0049] A third embodiment of the present invention provides a Y-branch waveguide beamsplitter modeling device, including a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor. When the processor executes the computer program, it implements the Y-branch waveguide beamsplitter modeling method as described in any of the above embodiments.

[0050] A fourth embodiment of the present invention provides a readable storage medium storing a computer program that can be executed by a processor of the device in which the storage medium is located, to implement the Y-branch waveguide beam splitter modeling method as described in any of the above claims.

[0051] Exemplary examples show that the computer program described in the third and fourth embodiments of the present invention can be divided into one or more modules, which are stored in the memory and executed by the processor to complete the present invention. The one or more modules can be a series of computer program instruction segments capable of performing specific functions, which describe the execution process of the computer program in implementing a Y-branch waveguide beam splitter modeling device. For example, the apparatus described in the second embodiment of the present invention.

[0052] The processor referred to can be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor or any conventional processor. The processor is the control center of the Y-branch waveguide beamsplitter modeling method, connecting various parts of the method through various interfaces and lines.

[0053] The memory can be used to store the computer program and / or modules. The processor implements various functions of a Y-branch waveguide beam splitter modeling method by running or executing the computer program and / or modules stored in the memory, and by calling the data stored in the memory. The memory may mainly include a program storage area and a data storage area. The program storage area may store the operating system, at least one application program required for a function (such as sound playback function, text conversion function, etc.), etc.; the data storage area may store data created according to the use of the mobile phone (such as audio data, text message data, etc.). In addition, the memory may include high-speed random access memory, and may also include non-volatile memory, such as hard disk, memory, plug-in hard disk, smart media card (SMC), secure digital (SD) card, flash card, at least one disk storage device, flash memory device, or other volatile solid-state storage device.

[0054] If the implemented module is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, all or part of the processes in the above embodiments of the present invention can also be implemented by a computer program instructing related hardware. The computer program can be stored in a computer-readable storage medium, and when executed by a processor, it can implement the steps of the various method embodiments described above. The computer program includes computer program code, which can be in the form of source code, object code, executable files, or certain intermediate forms. The computer-readable medium can include: any entity or device capable of carrying the computer program code, recording media, USB flash drives, portable hard drives, magnetic disks, optical disks, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signals, telecommunication signals, and software distribution media, etc. It should be noted that the content included in the computer-readable medium can be appropriately added or removed according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, computer-readable media do not include electrical carrier signals and telecommunication signals.

[0055] It should be noted that the device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Furthermore, in the accompanying drawings of the device embodiments provided by this invention, the connection relationships between modules indicate that they have communication connections, which can be specifically implemented as one or more communication buses or signal lines. Those skilled in the art can understand and implement this without any creative effort.

[0056] The above are merely preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions that fall within the scope of the present invention are within the scope of protection of the present invention.

Claims

1. A method for modeling a Y-branch waveguide beam splitter, characterized in that, include: Obtain the target ratio of the output power of the first output waveguide and the second output waveguide; Obtain the basic parameters of the Y-branch waveguide beamsplitter, and establish an initial model of the Y-branch waveguide beamsplitter based on the basic parameters; Based on the target scale value, the position of the model input waveguide is adjusted to generate a Y-branch waveguide beam splitter model that matches the target scale value, specifically: The output power of the first output waveguide and the output power of the second output waveguide are compared. When the target output power value of the first output waveguide is greater than the target output power value of the second output waveguide, keep the position of the connection end between the initial model input waveguide and the output waveguide unchanged, and make a circular motion downward with the end of the initial model input waveguide closest to the connection end as the center, until the output power ratio of the first output waveguide and the second output waveguide is consistent with the target output power ratio of the first output waveguide and the second output waveguide; When the target output power value of the first output waveguide is less than the target output power value of the second output waveguide, the position of the connection end between the initial model input waveguide and the output waveguide remains unchanged, and the initial model input waveguide moves upward in a circle with the end closest to the connection end as the center, until the output power ratio of the first output waveguide and the second output waveguide is consistent with the target output power ratio of the first output waveguide and the second output waveguide.

2. The Y-branch waveguide beam splitter modeling method according to claim 1, characterized in that, The first output waveguide is the upper branch output waveguide of the Y-branch waveguide beam splitter.

3. The Y-branch waveguide beam splitter modeling method according to claim 1, characterized in that, The second output waveguide is the lower branch output waveguide of the Y-branch waveguide beam splitter.

4. A modeling device for a Y-branch waveguide beam splitter, characterized in that, include: The target ratio value acquisition unit is used to acquire the target ratio value of the output power of the first output waveguide and the second output waveguide; The initial model building unit is used to obtain the basic parameters of the Y-branch waveguide beam splitter and build the initial model of the Y-branch waveguide beam splitter based on the basic parameters. The Y-branch waveguide beamsplitter model generation unit is used to adjust the position of the model input waveguide according to the target scale value, and generate a Y-branch waveguide beamsplitter model that matches the target scale value. Specifically: The output power of the first output waveguide and the output power of the second output waveguide are compared. When the target output power value of the first output waveguide is greater than the target output power value of the second output waveguide, keep the position of the connection end between the initial model input waveguide and the output waveguide unchanged, and make a circular motion downward with the end of the initial model input waveguide closest to the connection end as the center, until the output power ratio of the first output waveguide and the second output waveguide is consistent with the target output power ratio of the first output waveguide and the second output waveguide; When the target output power value of the first output waveguide is less than the target output power value of the second output waveguide, the position of the connection end between the initial model input waveguide and the output waveguide remains unchanged, and the initial model input waveguide moves upward in a circle with the end closest to the connection end as the center, until the output power ratio of the first output waveguide and the second output waveguide is consistent with the target output power ratio of the first output waveguide and the second output waveguide.

5. A Y-branch waveguide beam splitter modeling device, characterized in that, It includes a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, wherein the processor executes the computer program to implement the Y-branch waveguide beam splitter modeling method as described in any one of claims 1 to 3.

6. A readable storage medium, characterized in that, The storage medium contains a computer program that can be executed by a processor of the device in which the storage medium resides, to implement the Y-branch waveguide beam splitter modeling method as described in any one of claims 1 to 3.

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