Preparation method and device of novel optical fiber sensing device, electronic equipment and medium

Abstract

The invention relates to the technical field of optical fiber sensing, in particular to a preparation method and device of a novel optical fiber sensing device, electronic equipment and a medium. The method comprises the following steps: acquiring a target multimode fiber meeting a preset length and a preset radius; grinding one side of the target multimode optical fiber to a preset grinding depth by using a side polishing grinding machine to obtain the multimode optical fiber after side polishing treatment; and connecting the single-mode optical fiber and the multimode optical fiber subjected to side polishing treatment by using a fusion splicer to obtain an optical fiber combination, and cascading the optical fiber combination with the fiber bragg grating to obtain the novel optical fiber sensing device. Therefore, the Bragg grating is cascaded outside the single-mode-multimode-single-mode optical fiber structure, so that the problem that the temperature interferes with the measurement result when the single-mode-multimode-single-mode optical fiber structure is used for measuring the refractive index in the prior art is solved, and the preparation cost is reduced while the battery monitoring reliability is improved.

Description

Technical Field

[0001] The present application relates to the field of optical fiber sensing technology, and in particular to a preparation method, device, electronic equipment and medium of a novel optical fiber sensing device. Background Art

[0002] With the continuous advancement of science and technology, fiber optic refractive index sensors have been applied in many fields due to their advantages. SMS (Single mode Multimode Single mode, single mode-multimode-single mode) fiber structure is favored due to its simplicity, but its traditional structure is not suitable for refractive index sensing.

[0003] In the related art, a variety of methods have been proposed to manufacture optical fibers to achieve refractive index sensing, including multiple taper technology and hydrogen fluoride etching.

[0004] However, this method has the problem that temperature interferes with the measurement results when measuring the refractive index using a single-mode-multimode-single-mode optical fiber structure, which needs to be solved urgently. Summary of the invention

[0005] The present application provides a preparation method, device, electronic equipment and medium of a novel optical fiber sensing device to solve the problem of temperature interference with the measurement results when the prior art uses a single-mode-multimode-single-mode optical fiber structure to measure the refractive index, thereby improving the reliability of battery monitoring and reducing the preparation cost.

[0006] To achieve the above-mentioned object, the first embodiment of the present application proposes a method for preparing a novel optical fiber sensing device, comprising the following steps:

[0007] Acquire a target multimode optical fiber that meets a preset length and a preset radius;

[0008] Grinding one side of the target multimode optical fiber to a preset grinding depth using a side-polishing grinder to obtain a multimode optical fiber after side-polishing;

[0009] A single-mode optical fiber and the multi-mode optical fiber after side-throwing treatment are connected by a fusion splicer to obtain an optical fiber combination, and the optical fiber combination is cascaded with a fiber Bragg grating to obtain a novel optical fiber sensing device.

[0010] According to one embodiment of the present application, obtaining a target multimode optical fiber that meets a preset length and a preset radius includes:

[0011] Simulate the radius and length of different multimode optical fiber cores to simulate the energy distribution of different modes of light when coupled between single-mode optical fiber and multimode optical fiber;

[0012] Based on the energy distribution, the preset length and the preset radius are determined, and the target multimode optical fiber is obtained according to the preset length and the preset radius.

[0013] According to an embodiment of the present application, determining the preset length and the preset radius based on the energy distribution includes:

[0014] Based on the energy distribution, determining the distribution characteristics of light energy at different fiber core radii and lengths;

[0015] According to the distribution characteristics of the light energy under the different core radii and lengths, the core radius and length corresponding to when the coupling effect and the interference peak wavelength difference are both in a preset optimal state are selected as the preset radius and the preset length.

[0016] According to one embodiment of the present application, the preset length is 4.1 cm, and the preset radius is 52.5 um.

[0017] According to one embodiment of the present application, the preset grinding depth is 20 um.

[0018] According to the preparation method of the novel optical fiber sensing device proposed in the embodiment of the present application, by obtaining a target multimode optical fiber that meets a preset length and a preset radius, a side-polishing grinder can be used to grind one side of the target multimode optical fiber to meet a preset grinding depth, thereby obtaining a multimode optical fiber after side-polishing; a fusion splicer is used to connect the single-mode optical fiber and the multimode optical fiber after side-polishing to obtain an optical fiber combination, and the optical fiber combination is cascaded with a fiber Bragg grating to obtain a novel optical fiber sensing device. Thus, by cascading a Bragg grating outside a single-mode-multimode-single-mode optical fiber structure, the problem of temperature interfering with the measurement result when the prior art uses a single-mode-multimode-single-mode optical fiber structure to measure the refractive index is solved, thereby improving the reliability of battery monitoring while reducing the preparation cost.

[0019] In order to achieve the above-mentioned object, the second embodiment of the present application proposes a preparation device of a novel optical fiber sensing device, comprising:

[0020] An acquisition module, used to acquire a target multimode optical fiber that meets a preset length and a preset radius;

[0021] A grinding module, used for grinding one side of the target multimode optical fiber to a preset grinding depth by using a side-polishing grinder to obtain a multimode optical fiber after side-polishing;

[0022] The module is used to connect the single-mode optical fiber and the multi-mode optical fiber after the side-throwing treatment by a fusion splicer to obtain an optical fiber combination, and the optical fiber combination is cascaded with a fiber Bragg grating to obtain a novel optical fiber sensing device.

[0023] According to one embodiment of the present application, the acquisition module includes:

[0024] A simulation unit is used to simulate the radius and length of different multimode optical fiber cores and simulate the energy distribution of different modes of light when coupled between single-mode optical fiber and multimode optical fiber;

[0025] A determination unit is used to determine the preset length and the preset radius based on the energy distribution, and obtain the target multimode optical fiber according to the preset length and the preset radius.

[0026] According to one embodiment of the present application, the determining unit is specifically configured to:

[0027] Based on the energy distribution, determining the distribution characteristics of light energy at different fiber core radii and lengths;

[0028] According to the distribution characteristics of the light energy under the different core radii and lengths, the core radius and length corresponding to when the coupling effect and the interference peak wavelength difference are both in a preset optimal state are selected as the preset radius and the preset length.

[0029] According to one embodiment of the present application, the preset length is 4.1 cm, and the preset radius is 52.5 um.

[0030] According to one embodiment of the present application, the preset grinding depth is 20 um.

[0031] According to the preparation device of the novel optical fiber sensing device proposed in the embodiment of the present application, by obtaining a target multimode optical fiber that meets a preset length and a preset radius, a side-polishing grinder can be used to grind one side of the target multimode optical fiber to meet a preset grinding depth, thereby obtaining a multimode optical fiber after side-polishing; a fusion splicer is used to connect the single-mode optical fiber and the multimode optical fiber after side-polishing to obtain an optical fiber combination, and the optical fiber combination is cascaded with a fiber Bragg grating to obtain a novel optical fiber sensing device. Thus, by cascading a Bragg grating outside a single-mode-multimode-single-mode optical fiber structure, the problem of temperature interfering with the measurement result when the prior art uses a single-mode-multimode-single-mode optical fiber structure to measure the refractive index is solved, thereby improving the reliability of battery monitoring while reducing the preparation cost.

[0032] To achieve the above-mentioned objectives, the third aspect of the present application proposes an electronic device, comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the method for preparing the new optical fiber sensing device as described in the above-mentioned embodiment.

[0033] To achieve the above objectives, the fourth aspect of the present application provides a computer-readable storage medium having a computer program stored thereon, which is executed by a processor to implement the method for preparing the novel optical fiber sensing device as described in the above embodiments.

[0034] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0036] Figure 1 A flowchart of a method for preparing a novel optical fiber sensing device according to an embodiment of the present application;

[0037] Figure 2 A schematic diagram of coupling a single-mode optical fiber and a multi-mode optical fiber according to an embodiment of the present application;

[0038] Figure 3 A schematic diagram of simulation results of simulating a multimode optical fiber using RSOFT according to an embodiment of the present application;

[0039] Figure 4 A schematic diagram of simulation results of simulating a multimode optical fiber using Matlab according to an embodiment of the present application;

[0040] Figure 5 is a schematic diagram of a novel optical fiber sensing device according to an embodiment of the present application;

[0041] Figure 6 A schematic diagram of a practical application of a novel optical fiber sensing device according to an embodiment of the present application;

[0042] Figure 7 A schematic block diagram of a device for preparing a novel optical fiber sensing device provided according to an embodiment of the present application;

[0043] Figure 8 It is a schematic diagram of the structure of an electronic device provided according to an embodiment of the present application. DETAILED DESCRIPTION

[0044] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0045] The following describes the preparation method, device, electronic equipment and medium of the novel optical fiber sensing device proposed in the embodiments of the present application with reference to the accompanying drawings.

[0046] Figure 1 It is a flow chart of a method for preparing a novel optical fiber sensing device according to an embodiment of the present application.

[0047] Before introducing the preparation method of the novel optical fiber sensing device proposed in the embodiment of the present application, the relevant technical background is briefly introduced.

[0048] Among the existing refractive index sensor technologies, fiber optic refractive index sensors are favored by scholars from all over the world because of their compact structure, strong anti-electromagnetic interference ability, remote monitoring and low cost. So far, various fiber optic refractive index sensors have been proposed, such as those based on long period gratings, surface plasmon resonance (SPR), annularly wound single-mode optical fibers, and different types of fiber interferometers, such as Michelson interferometers and FP (Fabry-Perot) interferometers (invented by French physicists Charles Fabry and Alfred Perot). However, the manufacturing costs of these configurations are relatively high. For example, the production of fiber Bragg gratings requires the use of carbon dioxide lasers or ultraviolet exposure technology, while the manufacture of SPR-based sensors usually requires vacuum coating equipment. Considering the cost of production and practical applications, the simpler single-mode-multimode-single-mode fiber structure is becoming more and more popular.

[0049] In the field of optical fiber sensing technology, the single-mode-multimode-single-mode (SMS) fiber structure can accurately measure a wide range of external physical parameters, such as temperature, humidity, strain, curvature, and magnetic field. The measurement principle of this structure is relatively simple. When the light beam propagates from the single-mode fiber to the multimode fiber, multiple propagation modes are excited, and interference occurs between these modes, thereby forming a specific waveform. By observing the movement of the peak wavelength in these waveforms, the impact of changes in the external environment on the light waves can be monitored, thereby realizing the sensing function.

[0050] However, the traditional SMS structure is not suitable for sensing the external refractive index because of the presence of a cladding, which limits the direct impact of the external environment on the evanescent field. In order to overcome this limitation, scholars at home and abroad have tried a variety of methods, such as multiple taper processes in multimode optical fibers, so that the evanescent waves generated in the cone region can penetrate into the liquid to be measured, thereby realizing the measurement of the external refractive index. However, this technology requires multiple complex processing steps, and ultra-precise alignment between multimode optical fibers and single-mode optical fibers (SMF), which not only increases costs but also reduces overall work efficiency. Another method is to use hydrogen fluoride (HF) to chemically etch the cladding of multimode optical fibers (MMF). In this way, the evanescent field can come into contact with the external environment, thereby realizing the sensing of the external refractive index. Although the manufacturing cost of hydrogen fluoride etching is relatively low, its experimental process is harmful to the human body and the environment. In addition, it is difficult to detect the etching depth of the etched SMS optical fiber in real time and online during the manufacturing process. The emergence of wheel-type side polishing technology provides a simpler method to monitor the polishing depth in real time and online. This technology uses a roller covered with an abrasive to polish the SMS optical fiber. Compared with the hydrogen fluoride etching process, wheel-type side polishing is not only more efficient, but also more flexible. The length and depth of the polishing can be customized as needed, thus providing new possibilities for the development of fiber optic sensing technology.

[0051] However, when using side-throw SMS optical fiber for refractive index sensing, local temperature changes will interfere with the refractive index measurement, thereby affecting the accuracy of the measurement.

[0052] It is precisely based on the above problems that the embodiment of the present application proposes a method for preparing a novel optical fiber sensing device, in which a Bragg grating (FBG) is cascaded outside the SMS optical fiber. Because FBG has been proven to be an excellent sensor for strain (object deformation) and temperature measurement, but it is not very sensitive to changes in the external refractive index. Therefore, the temperature can be measured by taking advantage of the temperature sensitivity of FBG and eliminating the interference of temperature on the measurement result during SMS refractive index measurement, thereby achieving simultaneous measurement of temperature and refractive index.

[0053] For example, Figure 1 As shown, the preparation method of the novel optical fiber sensing device comprises the following steps:

[0054] In step S101, a target multimode optical fiber that meets a preset length and a preset radius is obtained.

[0055] Among them, the preset length and the preset radius can be values ​​pre-set by technical personnel in this field, or values ​​obtained through a limited number of experiments, or values ​​obtained through a limited number of computer simulations, and are not specifically limited here.

[0056] It is understood that multimode fiber refers to a type of optical fiber in which light can travel along multiple paths or modes. This is different from single-mode fiber, which only allows light to travel along a single path.

[0057] For ease of understanding, the following describes in detail how to obtain a target multimode optical fiber that meets a preset length and a preset radius.

[0058] As a possible implementation method, in some embodiments, obtaining a target multimode optical fiber that meets a preset length and a preset radius includes: simulating the radius and length of different multimode optical fiber cores to simulate the energy distribution of different modes of light when coupled between a single-mode optical fiber and a multimode optical fiber; based on the energy distribution, determining a preset length and a preset radius, and obtaining the target multimode optical fiber according to the preset length and the preset radius.

[0059] In some embodiments, the preset length is 4.1 cm and the preset radius is 52.5 um.

[0060] It is understandable that if Figure 2 As shown in the single-mode-multimode-single-mode coupling structure, due to the mismatch between the fiber core sizes of the multimode fiber and the single-mode fiber, when the incident light enters the multimode fiber from the single-mode fiber, a phenomenon occurs, that is, a uniform and symmetrical radial mode field LP is excited. 0m (m represents the integer number of the mode). This radial mode field is generated because multimode fiber allows light to propagate in multiple modes. Since the propagation constants of each mode are different, when these modes propagate the same distance in the fiber, there will be an optical path difference between them, which will lead to a phase change. Under the weak guide approximation, the expression for the difference in the longitudinal propagation constant between any two modes in a multimode fiber can be derived as:

[0061]

[0062] Among them, u m 、u n are the roots of the zero-order Bessel equation, k is the wave number, α is the core radius of the multimode fiber, and n 0 is the refractive index of the multimode optical fiber. At a certain length L, LP 0m and LP 0n The coherent interference conditions between modes satisfy:

[0063] (β m -β n )L=2πN; (5)

[0064] Wherein, N is an integer.

[0065] It can be seen from equations (1) and (5) that when the interference maximum occurs, the wavelength can be expressed as:

[0066]

[0067] Therefore, in a single-mode-multimode-single-mode optical fiber, the peak wavelength difference between the two interference maxima can be expressed as:

[0068]

[0069] From formula (7), we can see that the refractive index n of the core is 0 The changes of the core radius α and the length L of the multimode optical fiber will cause the change of the interference peak wavelength difference. Therefore, RSOFT and MATLAB software can be used to simulate the radius and length of the core.

[0070] Furthermore, in some embodiments, based on the energy distribution, the preset length and the preset radius are determined, including: based on the energy distribution, determining the distribution characteristics of the light energy at different core radii and lengths; according to the distribution characteristics of the light energy at different core radii and lengths, selecting the corresponding core radius and length when the coupling effect and the interference peak wavelength difference are both in a preset optimal state as the preset radius and preset length.

[0071] Specifically, if Figure 3 As shown, by carefully analyzing the coupling efficiency curve shown in the RSOFT simulation results, it can be clearly seen that when coupling occurs between different modes, the energy transfer will be superimposed or weakened (i.e., energy distribution). This phenomenon is particularly evident in a specific wavelength region. Specifically, a significant energy peak can be observed at a wavelength of 41025um. Based on this finding, the length of the multimode fiber MMF (i.e., the preset length) can be determined to be 4.1cm, thereby ensuring the best coupling efficiency at this wavelength.

[0072] Furthermore, if Figure 4 As shown, by carefully analyzing the MATLAB simulation results, it can be found that the larger the core diameter (radius), the better the coupling effect, so the diameter of the multimode optical fiber is selected as 105um, that is, the preset radius is 52.5um.

[0073] Therefore, by simulating the interference spectra under different core radii and lengths, the variation law of the interference peak wavelength difference can be intuitively observed. In the simulation process, by setting multiple combinations of core radius and length, and calculating the corresponding interference spectra respectively, by comparing the interference spectra under different combinations, it can be found that with the increase of core radius, the interference peak wavelength difference shows an increasing trend; while with the increase of length, the interference peak wavelength difference shows a decreasing trend. This simulation result is consistent with the theoretical derivation, which further verifies the correctness of the theoretical derivation. At the same time, through simulation, the selection of core radius and length can also be optimized to obtain the best coupling effect and interference peak wavelength difference.

[0074] In step S102, a side-polishing grinder is used to grind one side of the target multimode optical fiber to a preset grinding depth, thereby obtaining a multimode optical fiber after side-polishing.

[0075] In some embodiments, the preset grinding depth is 20 um.

[0076] It is understandable that the specific values ​​of the core length and radius of the target multimode optical fiber can be determined through in-depth theoretical analysis and simulation calculations. In view of the characteristics of single-mode optical fiber and multimode optical fiber, they are usually not affected by changes in the refractive index of the external liquid. In order to achieve effective monitoring of changes in the refractive index of the liquid, a side-polishing grinder can be used to finely grind one side of the multimode optical fiber. During the grinding process, although deeper grinding may bring better coupling effects, it will also make the processing process more complicated and difficult. Therefore, the embodiment of the present application selects 20um as the preset grinding depth, thereby obtaining a fiber end face of a specific shape. This processing method is called side-polishing. The multimode optical fiber after side-polishing can be used in specific optical fiber connections or optical devices to achieve better optical performance or compatibility.

[0077] In step S103, a fusion splicer is used to connect the single-mode optical fiber and the multi-mode optical fiber after side-throwing treatment to obtain an optical fiber combination, and the optical fiber combination is cascaded with a fiber Bragg grating to obtain a novel optical fiber sensing device.

[0078] Specifically, if Figure 5 As shown in the figure, by using a fusion splicer to precisely connect a single-mode optical fiber and a multimode optical fiber after side-throwing, and cascading this connected optical fiber combination with a fiber Bragg grating (FBG), a multifunctional sensor capable of measuring the refractive index and temperature of the external environment, i.e., a new type of optical fiber sensing device, can be obtained. This sensor is not only highly sensitive, but also relatively low in cost, and can accurately measure the temperature and refractive index of the environment at the same time.

[0079] Furthermore, if Figure 6As shown in the figure, by embedding the new fiber optic sensor device into the battery, when the light emitted by the broadband light source passes through the new fiber optic sensor device, its transmitted light will be demodulated by the demodulator. This process converts the optical signal carrying the refractive index and temperature information inside the battery into an electrical signal for output. If it is applied to actual vehicles, the following significant effects can be achieved: first, its response speed will be much faster than traditional external electronic sensors, and it can send out safety alarm signals at least 3 seconds in advance; second, it will assist the battery management system to formulate charging and discharging strategies more accurately, thereby effectively extending the battery life and ensuring the safe operation of the battery.

[0080] According to the preparation method of the novel optical fiber sensing device proposed in the embodiment of the present application, by obtaining a target multimode optical fiber that meets a preset length and a preset radius, a side-polishing grinder can be used to grind one side of the target multimode optical fiber to meet a preset grinding depth, thereby obtaining a multimode optical fiber after side-polishing; a fusion splicer is used to connect the single-mode optical fiber and the multimode optical fiber after side-polishing to obtain an optical fiber combination, and the optical fiber combination is cascaded with a fiber Bragg grating to obtain a novel optical fiber sensing device. Thus, by cascading a Bragg grating outside a single-mode-multimode-single-mode optical fiber structure, the problem of temperature interfering with the measurement result when the prior art uses a single-mode-multimode-single-mode optical fiber structure to measure the refractive index is solved, thereby improving the reliability of battery monitoring while reducing the preparation cost.

[0081] Next, a preparation device for a novel optical fiber sensing device according to an embodiment of the present application will be described with reference to the accompanying drawings.

[0082] Figure 7 It is a block diagram of a preparation device of a novel optical fiber sensing device according to an embodiment of the present application.

[0083] like Figure 7 As shown, the preparation device 10 of the novel optical fiber sensing device includes: an acquisition module 100 , a grinding module 200 and a obtaining module 300 .

[0084] The acquisition module 100 is used to acquire a target multimode optical fiber that meets a preset length and a preset radius;

[0085] The grinding module 200 is used to grind one side of the target multimode optical fiber to a preset grinding depth using a side-grinding grinder to obtain a multimode optical fiber after side-grinding.

[0086] The module 300 is obtained, which is used to connect the single-mode optical fiber and the multi-mode optical fiber after side-throwing treatment by using a fusion splicer to obtain an optical fiber combination, and cascade the optical fiber combination with a fiber Bragg grating to obtain a novel optical fiber sensing device.

[0087] Furthermore, in some embodiments, the acquisition module 100 includes:

[0088] A simulation unit is used to simulate the radius and length of different multimode optical fiber cores and simulate the energy distribution of different modes of light when coupled between single-mode optical fiber and multimode optical fiber;

[0089] The determination unit is used to determine a preset length and a preset radius based on the energy distribution, and obtain a target multimode optical fiber according to the preset length and the preset radius.

[0090] Further, in some embodiments, the determining unit is specifically configured to:

[0091] Based on the energy distribution, determine the distribution characteristics of light energy under different fiber core radii and lengths;

[0092] According to the distribution characteristics of light energy under different fiber core radii and lengths, the fiber core radius and length corresponding to when the coupling effect and the interference peak wavelength difference are both in a preset optimal state are selected as the preset radius and preset length.

[0093] Further, in some embodiments, the preset length is 4.1 cm and the preset radius is 52.5 um.

[0094] Further, in some embodiments, the preset grinding depth is 20 um.

[0095] It should be noted that the above explanations of the embodiment of the method for preparing the novel optical fiber sensing device are also applicable to the device for preparing the novel optical fiber sensing device of this embodiment, and will not be repeated here.

[0096] According to the preparation device of the novel optical fiber sensing device proposed in the embodiment of the present application, by obtaining a target multimode optical fiber that meets a preset length and a preset radius, a side-polishing grinder can be used to grind one side of the target multimode optical fiber to meet a preset grinding depth, thereby obtaining a multimode optical fiber after side-polishing; a fusion splicer is used to connect the single-mode optical fiber and the multimode optical fiber after side-polishing to obtain an optical fiber combination, and the optical fiber combination is cascaded with a fiber Bragg grating to obtain a novel optical fiber sensing device. Thus, by cascading a Bragg grating outside a single-mode-multimode-single-mode optical fiber structure, the problem of temperature interfering with the measurement result when the prior art uses a single-mode-multimode-single-mode optical fiber structure to measure the refractive index is solved, thereby improving the reliability of battery monitoring while reducing the preparation cost.

[0097] Figure 8 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application. The electronic device may include:

[0098] A memory 801 , a processor 802 , and a computer program stored in the memory 801 and executable on the processor 802 .

[0099] When the processor 802 executes the program, the method for preparing the novel optical fiber sensing device provided in the above embodiment is implemented.

[0100] Furthermore, the electronic device further comprises:

[0101] The communication interface 803 is used for communication between the memory 801 and the processor 802 .

[0102] The memory 801 is used to store computer programs that can be executed on the processor 802 .

[0103] The memory 801 may include a high-speed RAM (Random Access Memory) memory, and may also include a non-volatile memory, such as at least one disk memory.

[0104] If the memory 801, the processor 802 and the communication interface 803 are implemented independently, the communication interface 803, the memory 801 and the processor 802 can be connected to each other through a bus and communicate with each other. The bus can be an ISA (Industry Standard Architecture) bus, a PCI (Peripheral Component Interconnect) bus or an EISA (Extended Industry Standard Architecture) bus, etc. The bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 8 Only one thick line is used in the diagram, but this does not mean that there is only one bus or only one type of bus.

[0105] Optionally, in a specific implementation, if the memory 801, the processor 802 and the communication interface 803 are integrated on a chip, the memory 801, the processor 802 and the communication interface 803 can communicate with each other through an internal interface.

[0106] The processor 802 may be a CPU (Central Processing Unit), or an ASIC (Application Specific Integrated Circuit), or one or more integrated circuits configured to implement the embodiments of the present application.

[0107] The embodiment of the present application also provides a computer-readable storage medium having a computer program stored thereon, and when the program is executed by a processor, the method for preparing the novel optical fiber sensing device as described above is implemented.

[0108] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0109] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0110] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A method for preparing a novel optical fiber sensing device, characterized in that: The following steps are involved: Acquire a target multimode optical fiber that meets a preset length and a preset radius; Grinding one side of the target multimode optical fiber to a preset grinding depth using a side-polishing grinder to obtain a multimode optical fiber after side-polishing; A single-mode optical fiber and the multi-mode optical fiber after side-throwing treatment are connected by a fusion splicer to obtain an optical fiber combination, and the optical fiber combination is cascaded with a fiber Bragg grating to obtain a novel optical fiber sensing device.

2. The method according to claim 1, characterized in that The step of obtaining a target multimode optical fiber that meets a preset length and a preset radius includes: Simulate the radius and length of different multimode optical fiber cores to simulate the energy distribution of different modes of light when coupled between single-mode optical fiber and multimode optical fiber; Based on the energy distribution, the preset length and the preset radius are determined, and the target multimode optical fiber is obtained according to the preset length and the preset radius.

3. The method according to claim 2, characterized in that The determining the preset length and the preset radius based on the energy distribution includes: Based on the energy distribution, determining the distribution characteristics of light energy at different fiber core radii and lengths; According to the distribution characteristics of the light energy under the different core radii and lengths, the core radius and length corresponding to when the coupling effect and the interference peak wavelength difference are both in a preset optimal state are selected as the preset radius and the preset length.

4. The method according to claim 1, characterized in that: The preset length is 4.1 cm, and the preset radius is 52.5 um.

5. The method according to claim 4, characterized in that The preset grinding depth is 20um.

6. A novel preparation device for an optical fiber sensing device, characterized in that: include: An acquisition module, used to acquire a target multimode optical fiber that meets a preset length and a preset radius; A grinding module, used for grinding one side of the target multimode optical fiber to a preset grinding depth by using a side-polishing grinder to obtain a multimode optical fiber after side-polishing; The module is obtained, which is used to connect the single-mode optical fiber and the multi-mode optical fiber after the side-throwing treatment by a fusion splicer to obtain an optical fiber combination, and the optical fiber combination is cascaded with a fiber Bragg grating to obtain a novel optical fiber sensing device.

7. The device according to claim 6, characterized in that The acquisition module comprises: A simulation unit is used to simulate the radius and length of different multimode optical fiber cores and simulate the energy distribution of different modes of light when coupled between single-mode optical fiber and multimode optical fiber; A determination unit is used to determine the preset length and the preset radius based on the energy distribution, and obtain the target multimode optical fiber according to the preset length and the preset radius.

8. The device according to claim 7, characterized in that The determining unit is specifically configured to: Based on the energy distribution, determining the distribution characteristics of light energy at different fiber core radii and lengths; According to the distribution characteristics of the light energy under the different core radii and lengths, the core radius and length corresponding to when the coupling effect and the interference peak wavelength difference are both in a preset optimal state are selected as the preset radius and the preset length.

9. An electronic device, characterized in that: include: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the method for preparing the novel optical fiber sensing device according to any one of claims 1 to 5.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: The program is executed by a processor to implement the method for preparing a novel optical fiber sensing device as described in any one of claims 1 to 5.

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