Optical fiber, optical fiber preparation method and laser detection system

Abstract

The embodiments of the present application belong to the fields of optics, materials, and detection, and relate to an optical fiber and a method for preparing the same. The core components of the optical fiber include quartz, sodium oxide, boron oxide, potassium oxide, praseodymium, and germanium dioxide / germanium. The present application also relates to a laser detection system, a computer-controlled processing device, a data comparison library, a laser, a laser probe, an adapter, and the above-mentioned optical fiber. In the technical solution provided by the present application, the laser detection system adopts the optical fiber, the oxide in the core can reduce the attenuation of the optical signal, the praseodymium element enables the optical fiber to have the phenomenon of laser oscillation and light amplification, which is conducive to replenishing the light energy lost during the transmission process to ensure the intensity of the optical signal, and the germanium dioxide or germanium can reduce the refractive index, prevent light scattering and light loss caused by the change of the refractive index, and increase the clarity of the image of the detection site. At the same time, the computer-controlled processing device compares and analyzes the image of the detection site to assist in the discovery of lesions and increase the efficiency and accuracy of the judgment.

Description

Technical Field

[0001] The present application relates to the fields of optics, materials, and detection technology, and more specifically, to an optical fiber and a preparation method thereof, and also to a laser detection system. Background Art

[0002] Health is closely related to people's lives. With the development of science and technology, medical standards are also steadily improving.

[0003] In medical diagnosis, since most lesions are located inside the human body, endoscopic equipment is needed to observe the lesions. Among them, equipment using laser as a detection method is widely used, and in such equipment, optical fiber, as a medium for propagating laser, plays a vital role in the accuracy of detection. Although a variety of optical fibers that are beneficial to medical endoscopy have been developed, the relevant characteristics of optical fibers can still be further improved to more accurately assist in judging the patient's condition, thereby symptomatic treatment and improving medical standards. Summary of the invention

[0004] The technical problem to be solved by the embodiments of the present application is how to obtain an optical fiber and a detection device that are more conducive to detection, so as to improve the detection accuracy.

[0005] In order to solve the above technical problems, an embodiment of the present application provides an optical fiber, which adopts the following technical solution: the optical fiber includes a core and a cladding, and the components of the core include 980-1005 parts of quartz, 0.95-1.05 parts of sodium oxide, 0.95-1.05 parts of boron oxide, 0.95-1.05 parts of potassium oxide, 0.95-1.05 parts of praseodymium and 0.95-1.05 parts of X, calculated by mass, wherein X is germanium dioxide or germanium.

[0006] Furthermore, the composition of the fiber core includes 995 parts of quartz, 1 part of sodium oxide, 1 part of boron oxide, 1 part of potassium oxide, 1 part of praseodymium and 1 part of X in terms of mass fraction.

[0007] Furthermore, the diameter of the fiber core is 50um-400um.

[0008] In order to solve the above technical problems, the embodiment of the present application also provides a method for preparing optical fiber, which adopts the technical scheme described below: the method comprises the following steps: preparing the following raw materials in terms of mass: 980-1005 parts of quartz, 0.95-1.05 parts of sodium oxide, 0.95-1.05 parts of boron oxide, 0.95-1.05 parts of potassium oxide, 0.95-1.05 parts of praseodymium and 0.95-1.05 parts of germanium dioxide or germanium; putting the raw materials into a vacuum mixer and mixing and stirring the raw materials until they are uniform; placing the evenly mixed raw materials into the cylindrical cavity of the mold, and then sending the mold into a high-temperature oven for baking; taking out after cooling to obtain a cylindrical optical fiber.

[0009] Furthermore, the inner diameter of the cylindrical cavity of the mold is 50um-400um, preferably 50um-200um; the step of sending the mold into a high-temperature oven for baking includes: sending the mold into a high-temperature oven at 1755±5 degrees Celsius for 5.5h-6.5h of baking, and the baking time is preferably 6h.

[0010] In order to solve the above technical problems, the embodiment of the present application also provides a laser detection system, which adopts the following technical solution: the laser detection system includes a computer-controlled processing device, a data comparison library, a laser, a laser probe, an adapter and the above-mentioned optical fiber; the data comparison library and the laser are both connected to the computer-controlled processing device, the laser is connected to one end of the optical fiber through the adapter, and the other end of the optical fiber is connected to the laser probe; the laser is used to emit an incident light signal according to the instruction issued by the computer-controlled processing device; the adapter is used to transmit the incident light signal emitted by the laser to the optical fiber; the laser probe is used to emit the incident light signal of the optical fiber to the detection part, and receive the reflected light signal generated by the detection part; the computer-controlled processing device receives the reflected light signal transmitted back through the laser probe, the optical fiber, the adapter and the laser in sequence, converts the reflected light signal into a detection image, and calls the standard image of the same part stored in the data comparison library for comparison, and outputs the comparison result.

[0011] Furthermore, the adapter is a cylinder, and its components include 570-630 parts of epoxy resin, 375-415 parts of quartz, 0.95-1.05 parts of sodium oxide, 0.95-1.05 parts of boron oxide, 0.95-1.05 parts of potassium oxide, 0.95-1.05 parts of praseodymium and 0.95-1.05 parts of X by mass, wherein X is germanium dioxide or germanium.

[0012] Furthermore, it also includes a stereo microscope, which is connected to the computer control processing device, and the image of the detection part is observed through the stereo microscope.

[0013] Furthermore, it also includes a power generation device, an energy storage device, an electric control system and a lighting system connected in sequence, the computer-controlled processing device and the laser are both connected to the electric control system, and the electric control system is used to distribute power to the lighting system, the computer-controlled processing device and the laser; the energy storage device is connected to the power generation device, and is used to store the electric energy output by the power generation device, and supply power to the lighting system, the computer-controlled processing device and the laser respectively through the electric control system.

[0014] Furthermore, the laser is a vertical cavity surface emitting laser.

[0015] Compared with the prior art, the embodiments of the present application have the following beneficial effects:

[0016] The laser detection system of the present application adopts the present optical fiber. The core of the present optical fiber is a multi-component glass core made by mixing sodium oxide (Na2O), boron oxide (B2O3) and potassium oxide (K2O) in silicon dioxide (SiO2) raw material. The softening point of this core is lower than that of the quartz glass core, and the refractive index difference between this core and the cladding is very large, which can reduce the attenuation of the optical signal and is conducive to accurate peering inside the optical fiber used in medical treatment.

[0017] Moreover, the fiber core material also contains the rare earth element praseodymium (Pr), which makes the optical fiber have the phenomenon of laser oscillation and light amplification, which is beneficial to replenish the light energy lost in the transmission process to ensure the intensity of the light signal and increase the clarity of the image of the detection part. It is also beneficial to magnify the detection part and observe the overall changes, which is convenient for medical observation of the actual condition of the body part and achieves high efficiency and precision.

[0018] The fiber core material also contains germanium dioxide or germanium, which can reduce the refractive index and prevent light scattering and light loss caused by changes in the refractive index, thereby increasing the image clarity of the detection area.

[0019] In addition, the laser detection system transmits the incident light signal to the detection part through the laser, adapter, optical fiber and laser probe, and the reflected light signal generated by the detection part is detected by the laser probe, and is transmitted back to the computer control processing device through the optical fiber, adapter and laser in turn, so as to obtain the image of the detection part; the computer control processing device calls the standard image of the same part stored in the data comparison library according to the observed image of the detection part, and the computer control processing device compares the image of the detection part with the standard image of the same part, and outputs the comparison result. In this way, it can assist in finding out whether there is a lesion in the detection part, increase the accuracy of judgment, improve health detection methods, facilitate accurate analysis of the cause of the disease, and improve medical standards. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the scheme of the present application, a brief introduction is given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 is a connection diagram of a laser detection system in an embodiment of the present invention;

[0022] Figure 2 It is a main flow chart of the method for preparing optical fiber in an embodiment of the present invention.

[0023] Reference numerals:

[0024] 1. Computer control processing device; 2. Data comparison library; 3. Laser; 4. Laser probe; 5. Optical fiber; 6. Adapter; 7. Power generation device; 8. Energy storage device; 9. Electronic control system; 10. Lighting system. DETAILED DESCRIPTION

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0026] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0027] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings.

[0028] Embodiment 1 of an optical fiber of the present application

[0029] This embodiment provides an optical fiber, including a core and a cladding, wherein the core is a solid column made of a soft transparent light-guiding material, and the components of the core include 980-1005 parts of quartz, 0.95-1.05 parts of sodium oxide, 0.95-1.05 parts of boron oxide, 0.95-1.05 parts of potassium oxide, 0.95-1.05 parts of praseodymium and 0.95-1.05 parts of X by mass, wherein X is germanium dioxide or germanium.

[0030] For example, the composition of the fiber core is as follows, by mass: 995 parts quartz, 1 part sodium oxide, 1 part boron oxide, 1 part potassium oxide, 1 part praseodymium, and 1 part X.

[0031] Specifically, the fiber core in this embodiment is a multi-component glass fiber core made by mixing sodium oxide (Na2O), boron oxide (B2O3), and potassium oxide (K2O) in a silicon dioxide (SiO2) raw material. This fiber core has a lower softening point than a quartz glass fiber core, and the refractive index difference between the fiber core and the cladding is large, which can reduce the attenuation of the optical signal and facilitate accurate observation inside the optical fiber used in medical treatment.

[0032] Moreover, the fiber core material also contains the rare earth element praseodymium (Pr), which makes the optical fiber have the phenomenon of laser oscillation and light amplification, which is beneficial to replenish the light energy lost in the transmission process to ensure the intensity of the light signal and increase the clarity of the image of the detection part. It is also beneficial to magnify the detection part and observe the overall changes, which is convenient for medical observation of the actual condition of the body part and achieves high efficiency and precision.

[0033] Furthermore, the fiber core material also contains germanium dioxide or germanium, which can reduce the refractive index and prevent light scattering and light loss caused by changes in the refractive index, thereby increasing the image clarity of the detection area.

[0034] Embodiment 2 of an optical fiber of the present application

[0035] The optical fiber provided in this embodiment is a further design based on the optical fiber embodiment 1, specifically, the diameter of the fiber core is 50um-400um. The fiber core in this diameter range is easy to make, and because the diameter is small enough, the optical fiber is highly flexible and can smoothly enter the body without damaging the body tissue, thereby achieving the purpose of accurate spying.

[0036] Table 1 below is a table of optical loss of fiber cores with different diameters containing praseodymium components.

[0037]

[0038]

[0039] Table 1

[0040] Table 2 below is a table of optical loss for fiber cores of different diameters without praseodymium components.

[0041]

[0042]

[0043] Table 2

[0044] It can be seen from the optical loss percentages in Tables 1 and 2 that adding praseodymium to the fiber core can greatly reduce the optical loss. Moreover, the optical loss increases with the increase of the fiber core diameter, that is, the smaller the diameter of the fiber core, the smaller the optical loss. Therefore, the diameter of the fiber core is preferably 50um-200um.

[0045] Embodiment 1 of a method for preparing an optical fiber of the present application

[0046] See also Figure 2 This embodiment provides a method for preparing an optical fiber, the method comprising the following steps:

[0047] S1. Prepare raw materials according to the ratio;

[0048] Specifically, the raw materials are prepared as follows, calculated by weight: 980-1005 parts of quartz, 0.95-1.05 parts of sodium oxide, 0.95-1.05 parts of boron oxide, 0.95-1.05 parts of potassium oxide, 0.95-1.05 parts of praseodymium and 0.95-1.05 parts of germanium dioxide or germanium;

[0049] S2. Put the raw materials into a vacuum mixer and mix them until they are uniform;

[0050] S3, placing the evenly mixed raw materials into the cylindrical cavity of the mold, and then sending the mold into a high-temperature oven for baking;

[0051] S4. Take it out after cooling to obtain a cylindrical optical fiber.

[0052] Embodiment 2 of a method for preparing an optical fiber of the present application

[0053] The present embodiment provides a method for preparing an optical fiber, which is a further design based on the first embodiment of the method for preparing an optical fiber, and specifically includes:

[0054] Prepare the following raw materials by weight: 980-1005 parts of quartz, 0.95-1.05 parts of sodium oxide, 0.95-1.05 parts of boron oxide, 0.95-1.05 parts of potassium oxide, 0.95-1.05 parts of praseodymium and 0.95-1.05 parts of germanium dioxide or germanium; for example, prepare the following raw materials by weight: 995 parts of quartz, 1 part of sodium oxide, 1 part of boron oxide, 1 part of potassium oxide, 1 part of praseodymium and 1 part of germanium dioxide or germanium;

[0055] Put the raw materials into a vacuum mixer, evacuate and stir for 40-50 minutes, mix and stir the raw materials until they are uniform, and the evacuation and stirring time is preferably 45 minutes;

[0056] Place the mixed raw materials into the cylindrical cavity of the mold, and then send the mold into a high-temperature oven at 1755±5 degrees Celsius for baking for 5.5h-6.5h, preferably 6h; the inner diameter of the cylindrical cavity of the mold is 50um-400um, preferably 50um-200um;

[0057] After cooling, take it out to obtain a cylindrical optical fiber.

[0058] After obtaining the cylindrical optical fiber, it is necessary to inspect the obtained cylindrical optical fiber. The standard for passing the inspection is that it has no bubbles and is transparent when observed under a microscope.

[0059] Moreover, the mold is divided into two parts. Before use, the two parts of the mold need to be snapped together to form a cylindrical cavity; and the high-temperature oven is provided with a mold rack, and the mold is placed on the mold rack of the high-temperature oven for baking.

[0060] Embodiment 1 of a laser detection system of the present application

[0061] This embodiment provides a laser detection system, including a computer control processing device 1, a data comparison library 2, a laser 3, a laser probe 4, an adapter 6 and the above-mentioned optical fiber 5.

[0062] See also Figure 1 The data comparison library and the laser are both connected to a computer control processing device, the laser is connected to one end of the optical fiber through the adapter, and the other end of the optical fiber is connected to the laser probe; the laser is used to emit an incident light signal according to an instruction issued by the computer control processing device; the adapter is used to transmit the incident light signal emitted by the laser to the optical fiber; the laser probe is used to emit the incident light signal of the optical fiber to a detection part, and receive a reflected light signal generated by the detection part; the computer control processing device receives the reflected light signal transmitted back through the laser probe, the optical fiber, the adapter and the laser in sequence, converts the reflected light signal into a detection image, calls a standard image of the same part stored in the data comparison library for comparison, and outputs a comparison result.

[0063] Specifically, after receiving the instruction from the computer-controlled processing device 1, the laser 3 emits an incident light signal, which is transmitted to the optical fiber 5 through the adapter 6, and then input to the laser probe 4 through the optical fiber 5, and then emitted from the laser probe 4 to reach the detection part. The reflected light signal generated by the detection part is detected by the laser probe 4 and output from the laser probe 4. The reflected light signal passes through the optical fiber 5, the adapter 6 and the laser 3 in sequence and is transmitted back to the computer-controlled processing device 1. The computer-controlled processing device 1 is provided with a photoelectric / electro-optical conversion module. The reflected light signal is converted by the photoelectric / electro-optical conversion module to obtain an image of the detection part; the computer-controlled processing device 1 can call the data stored in the data comparison library 2. The computer-controlled processing device 1 calls the standard image of the same part stored in the data comparison library 2 according to the observed image of the detection part. The computer-controlled processing device 1 compares the image of the detection part with the standard image of the same part, and displays the shape, size parameters and whether the detection part is abnormal.

[0064] In this way, it can assist in discovering whether there are lesions in the detection area, increase the accuracy of judgment, improve health detection methods, facilitate accurate analysis of the cause of the disease, and improve medical standards.

[0065] The computer control processing device 1 can be a quantum computer control processing device or an electronic computer control processing device, which has a fast processing speed. The computer control processing device 1 is a core component of the laser detection system, which collects and stores images of the detection part in a storage module to assist in subsequent judgment. The computer control processing device 1 can send an on or off instruction to the laser 3, and the laser 3 performs corresponding actions according to the instruction.

[0066] Embodiment 2 of a laser detection system of the present application

[0067] A laser detection system provided in this embodiment is further optimized on the basis of the embodiment 1 of the laser detection system so that the adapter 6 is a cylinder, and the thickness of the adapter 6 is 1.02mm-0.98mm. Moreover, in terms of mass fractions, the components of the adapter include 570-630 parts of epoxy resin, 375-415 parts of quartz, 0.95-1.05 parts of sodium oxide, 0.95-1.05 parts of boron oxide, 0.95-1.05 parts of potassium oxide, 0.95-1.05 parts of praseodymium and 0.95-1.05 parts of X, wherein X is germanium dioxide or germanium.

[0068] For example, the adapter 6 includes the following components in parts by mass: 600 parts of epoxy resin, 395 parts of quartz, 1 part of sodium oxide, 1 part of boron oxide, 1 part of potassium oxide, 1 part of praseodymium and 1 part of X.

[0069] Specifically, the function of the adapter 6 is to receive the optical signal emitted by the laser 3 and transmit it completely to the optical fiber 5 .

[0070] Among them, in the adapter 6, except for the epoxy resin, the other components are the same as the components of the fiber core, so that the optical signal will not be lost and it is more conducive to the transmission of the optical signal. The color of the epoxy resin is transparent, which can prevent the interference of external signals on the laser, has a sealing and protective effect on the light, is conducive to the transmission of the laser, and the epoxy resin is conducive to curing.

[0071] In addition, the adapter 6 and the optical fiber 5 can be connected together by a card slot or white curing glue.

[0072] Moreover, the preparation method of the adapter 6 comprises the following steps:

[0073] Prepare the following raw materials by weight: 570-630 parts of epoxy resin, 375-415 parts of quartz, 0.95-1.05 parts of sodium oxide, 0.95-1.05 parts of boron oxide, 0.95-1.05 parts of potassium oxide, 0.95-1.05 parts of praseodymium and 0.95-1.05 parts of X;

[0074] Put the raw materials into a vacuum mixer, evacuate for 45 minutes, and mix the raw materials until they are uniform;

[0075] Place the mixed raw materials into the cylindrical cavity of the mold, and then put the mold into the mold rack of the high-temperature oven and bake it at a temperature of 1755±5 degrees Celsius for 6 hours;

[0076] After cooling, take it out to obtain the adapter.

[0077] Among them, after obtaining the adapter, it is necessary to inspect the adapter. The standard for passing the inspection is that there are no bubbles and it is transparent and integrated when observed under a microscope.

[0078] The height of the cylindrical cavity of the mold is 1.02 mm-0.98 mm.

[0079] Embodiment 3 of a laser detection system of the present application

[0080] The laser detection system provided in this embodiment further includes a stereo microscope, which is connected to the computer control processing device, and the image of the detection part is observed through the stereo microscope, so that the user can observe the three-dimensional full picture of the detection part, thereby increasing the accuracy of judgment.

[0081] Embodiment 4 of a laser detection system of the present application

[0082] The laser detection system provided in this embodiment further includes a power generation device 7, an energy storage device 8, an electric control system 9 and a lighting system 10 which are connected in sequence.

[0083] See also Figure 1 The computer-controlled processing device 1 and the laser 3 are both connected to an electronic control system 9, and the electronic control system is used to distribute power to the lighting system, the computer-controlled processing device and the laser; the energy storage device 8 is connected to the power generation device, and is used to store the electric energy output by the power generation device 7, and supply power to the lighting system 10, the computer-controlled processing device 1 and the laser 3 respectively through the electronic control system 9.

[0084] Specifically, the power generation device 7 adopts a wind turbine power generation device 7 or a solar power generation device 7. The wind turbine power generation device 7 generates electricity by wind energy, and the solar power generation device 7 generates electricity by solar energy. Both belong to clean power generation methods, stable and environmentally friendly power generation, no pollution, healthy and environmentally friendly, and conducive to users breathing pollution-free air. The lighting system 10 illuminates the entire system to facilitate medical observation.

[0085] Embodiment 5 of a laser detection system of the present application

[0086] A laser detection system provided in this embodiment is a further design based on embodiments one to four of the laser detection system. Specifically, the laser 3 is a vertical cavity surface emitting laser. The optical signal emitted by the vertical cavity surface emitting laser is not scattered and the light is not lost, which is more conducive to transmission and increases the accuracy of detection.

[0087] Moreover, the length of the laser light source hole is 80um and the width is 80um. That is, the laser light emitted by the laser has a cross section of a square of 80um*80um.

[0088] Embodiment of a method for installing a laser detection system in the present application

[0089] This embodiment provides a method for installing a laser detection system, the method comprising the following steps:

[0090] Install the power generation device 7, the energy storage device 8, the electric control system 9 and the lighting system 10 respectively, and connect the power generation device 7, the energy storage device 8, the electric control system 9 and the lighting system 10 in sequence;

[0091] Fix the computer control processing device 1 and the data comparison library 2, and connect the electric control system 9 and the data comparison library 2 to the computer control processing device 1;

[0092] Fix the laser 3 and install the adapter 6 at the laser output hole of the laser 3 so that the axis of the laser output hole is parallel to the axis of the adapter 6. Connect the optical fiber 5 to the adapter 6 so that the axis of the adapter 6 is parallel to the axis of the optical fiber 5. Connect the laser probe 4 to the optical fiber 5.

[0093] After the above steps are completed, check whether the connections of each part are correct. After confirming that they are correct, turn on the power of the electronic control system 9 and the computer control processing device 1, start the self-test program of the computer control processing device 1, and confirm that they are correct, which means the installation is complete.

[0094] Among them, the self-test procedure of the computer-controlled processing device 1 is that the computer-controlled processing device 1 calls the image of the part with known conditions and compares it with the standard image of the same part in the data comparison library 2. The computer-controlled processing device 1 determines whether the part with known conditions is abnormal. If the judgment result is consistent with the known conditions, it indicates that the computer-controlled processing device 1 is normal.

[0095] Obviously, the embodiments described above are only some embodiments of the present application, rather than all embodiments. The preferred embodiments of the present application are given in the accompanying drawings, but they do not limit the patent scope of the present application. The present application can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive. Although the present application is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to perform equivalent replacement of some of the technical features therein. Any equivalent structure made using the contents of the specification and drawings of this application, directly or indirectly used in other related technical fields, is similarly within the scope of patent protection of this application.

Claims

1. An optical fiber comprising a core and a cladding, characterized in that: In terms of mass fraction, the core comprises 980-1005 parts of quartz, 0.95-1.05 parts of sodium oxide, 0.95-1.05 parts of boron oxide, 0.95-1.05 parts of potassium oxide, 0.95-1.05 parts of praseodymium and 0.95-1.05 parts of X, wherein X is germanium dioxide or germanium.

2. An optical fiber according to claim 1, characterized in that: The composition of the fiber core includes 995 parts of quartz, 1 part of sodium oxide, 1 part of boron oxide, 1 part of potassium oxide, 1 part of praseodymium and 1 part of X in terms of mass fraction.

3. An optical fiber according to claim 1, characterized in that: The diameter of the fiber core is 50um-400um.

4. A method for preparing an optical fiber, characterized in that: The method comprises the following steps: Prepare the following raw materials by weight: 980-1005 parts of quartz, 0.95-1.05 parts of sodium oxide, 0.95-1.05 parts of boron oxide, 0.95-1.05 parts of potassium oxide, 0.95-1.05 parts of praseodymium and 0.95-1.05 parts of germanium dioxide or germanium; Put the raw materials into a vacuum mixer and mix them until they are uniform; Placing the uniformly mixed raw materials into the cylindrical cavity of the mold, and then sending the mold into a high-temperature oven for baking; After cooling, take it out to obtain a cylindrical optical fiber.

5. The method for preparing an optical fiber according to claim 4, characterized in that: The inner diameter of the cylindrical cavity of the mold is 50um-400um; The step of sending the mold into a high temperature oven for baking comprises: The mold is placed in a high temperature oven at 1755±5 degrees Celsius and baked for 5.5h-6.5h.

6. A laser detection system, characterized in that: It comprises a computer control processing device, a data comparison library, a laser, a laser probe, a switching component and the optical fiber according to any one of claims 1 to 3; The data comparison library and the laser are both connected to a computer control processing device, the laser is connected to one end of the optical fiber through the adapter, and the other end of the optical fiber is connected to the laser probe; The laser is used to emit incident light signals according to instructions issued by the computer control processing device; The adapter is used to transmit the incident light signal emitted by the laser to the optical fiber; The laser probe is used to emit the incident light signal of the optical fiber to the detection part and receive the reflected light signal generated by the detection part; The computer-controlled processing device receives the reflected light signal transmitted back through the laser probe, the optical fiber, the adapter and the laser in sequence, converts the reflected light signal into a detection image, calls the standard image of the same part stored in the data comparison library for comparison, and outputs the comparison result.

7. A laser detection system according to claim 6, characterized in that: The adapter is a cylinder. Calculated by weight, the components of the adapter include 570-630 parts of epoxy resin, 375-415 parts of quartz, 0.95-1.05 parts of sodium oxide, 0.95-1.05 parts of boron oxide, 0.95-1.05 parts of potassium oxide, 0.95-1.05 parts of praseodymium and 0.95-1.05 parts of X, wherein X is germanium dioxide or germanium.

8. A laser detection system according to claim 6, characterized in that: It also includes a stereo microscope, which is connected to the computer control processing device and is used to observe the image of the detection part.

9. A laser detection system according to claim 6, characterized in that: It also includes a power generation device, an energy storage device, an electric control system and a lighting system which are connected in sequence. The computer-controlled processing device and the laser are both connected to the electric control system. The electric control system is used to distribute power to the lighting system, the computer-controlled processing device and the laser. The energy storage device is connected to the power generation device to store the electric energy output by the power generation device and to supply power to the lighting system, the computer-controlled processing device and the laser respectively through the electric control system.

10. A laser detection system according to any one of claims 6 to 9, characterized in that: The laser is a vertical cavity surface emitting laser.

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