Optical fiber aligning method and equipment

Abstract

The invention discloses an optical fiber aligning method and equipment, and belongs to the technical field of optical fiber maintenance, the optical fiber aligning method comprises the following steps: carrying out macro bending on the light emitting end of an optical fiber, then detecting the optical power change of tail fibers of numerous optical fibers, and if the optical power change of the tail fiber of a certain optical fiber accords with a set incidence relation between a macro bending angle and optical attenuation, determining that the optical fiber aligning is finished. If the optical fiber is subjected to macro bending, the tail fiber of the optical fiber corresponds to the optical fiber subjected to macro bending at the light emitting end, so that an optical fiber pairing link is constructed according to the port information and the tail fiber information corresponding to the optical fiber, the fiber pairing operation of the optical fiber is completed, the fiber pairing operation of all the optical fibers can be completed by repeating the operation, the position of the target tail fiber does not need to be manually found, and the efficiency is improved. The fiber alignment operation can be completed only by detecting the optical power change of the tail fibers under the condition that the number of the tail fibers is large and the relation is disordered, the fiber alignment efficiency is greatly improved, service communication does not need to be interrupted, and the use experience of a user is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of optical fiber maintenance, and in particular to an optical fiber pairing method and equipment. Background Art

[0002] With the increase in business, there are more and more jumpers in the computer room. After the fiber core has been connected to the network / relocation / dispatching transformation / removal / and other links, the jumper relationship of the optical fiber core has become more chaotic. There are hundreds of pigtails in a node computer room, and the jumper relationship of the pigtails can be hundreds of kinds. However, the traditional optical path verification method has difficulties such as low verification efficiency, unreliable accuracy, and difficulty in investigation, which in turn affects the accuracy of the asset management optical path, causing serious waste of fiber core resources, frequent splicing failures, incomplete optical paths, etc. Therefore, without affecting the existing network transmission business, how to find out the relationship between the two ends of the jumper of the optical path fiber core, sort out the optical path routing, and identify and release the pigtails of the virtual occupied ports is the main problem to be solved at present.

[0003] Chinese patent, publication number: CN110657950A, publication date: January 7, 2020, discloses a remote-triggered fiber optic alignment device, including a remote-triggered fiber optic alignment instrument and a handheld terminal for use in conjunction. The remote-triggered fiber optic alignment instrument includes a laser, a laser driving unit, a first main control unit and a first wireless communication unit; the first main control unit and the first wireless communication unit are signal-connected; the first main control unit controls the opening and closing of the laser through the laser driving unit; the signal output end of the laser is connected to a group of optical fiber connectors through an optical switch; each optical fiber connector is one-to-one equipped with a connector number for distinguishing other optical fiber connectors. The handheld terminal includes a second main control unit, a second input unit and a second wireless communication unit, the second wireless communication unit is used in conjunction with the first wireless communication unit, and the second input unit is used in conjunction with each of the optical fiber connectors, but it is still necessary to interrupt the communication of the service during the investigation, which will affect the user experience. Summary of the invention

[0004] The present invention aims at the problem of low fiber pairing efficiency caused by difficulty in quickly identifying the corresponding relationship of fiber pigtails when there are many fiber pigtails and their relationships are confusing. The present invention provides a fiber pairing method, which performs macro-bending on the light-emitting end of the optical fiber and then detects the optical power change of the fiber pigtails of many optical fibers. If the optical power change of the fiber pigtail of a certain optical fiber meets the correlation between the set macro-bending angle and optical attenuation, the fiber pigtail of the optical fiber corresponds to the optical fiber macro-bent at the light-emitting end, so that a fiber pairing link is constructed according to the port information and the fiber pigtail information corresponding to the optical fiber, thereby completing the fiber pairing operation of the optical fiber. The above operation can be repeated to complete the fiber pairing operation of all optical fibers without manually finding the position of the target fiber pigtail. When there are many fiber pigtails and their relationships are confusing, the fiber pairing operation can be completed by only detecting the optical power change of the fiber pigtail, which greatly improves the fiber pairing efficiency and does not need to interrupt business communications, thereby ensuring the user experience.

[0005] In a first aspect, a technical solution provided in an embodiment of the present invention is: an optical fiber pairing method, comprising the following steps: S1, obtaining the initial optical power of the optical fiber bundle to be tested; performing macrobending on the light-emitting end of each optical fiber to be tested in turn and detecting the current optical power of the optical fiber pigtail in the optical fiber bundle to be tested; S2, obtaining an optical power attenuation curve set of the optical fiber pigtail in the optical fiber bundle to be tested based on the current optical power and the initial optical power, and obtaining an optical fiber to be tested that meets the correlation relationship based on the correlation relationship between the set macrobend angle and the optical attenuation; S3, taking the optical fiber to be tested that meets the association relationship as the target optical fiber, obtaining the port information and pigtail information corresponding to the target optical fiber, and building an optical fiber pairing link based on the port information and pigtail information; and pairing all optical fibers to be tested based on the optical fiber pairing link.

[0006] In this solution, the optical fiber pigtail corresponding to the optical fiber output end is found by macrobending the optical fiber output end of each optical fiber to be tested and detecting the current optical power of the optical fiber pigtail in the optical fiber bundle to be tested. The optical fiber alignment operation is realized without interrupting business communication, ensuring the user experience. At the same time, the pigtail is not damaged during the alignment process, ensuring the service life of the optical fiber. By obtaining the optical power attenuation curve set of the optical fiber pigtail in the optical fiber bundle to be tested, and combining the correlation between the set macrobending angle and the optical attenuation, the optical fiber to be tested that meets the correlation relationship is obtained, so that a large number of pigtails can be identified one by one through analysis equipment such as computers, without the need for For manual analysis, the staff only needs to perform macro bends on the optical fiber output ends in turn to automatically pair the pigtails, which significantly reduces the fiber core tracing time and improves the fiber pairing efficiency. By obtaining the port information and pigtail information corresponding to the target optical fiber, a fiber pairing link is constructed based on the port information and pigtail information, and then all optical fibers to be tested are paired based on the fiber pairing link. The fiber jumper relationship can be automatically derived through computers and other analysis equipment to complete automatic optical path splicing without human intervention. The fiber connection status can be accurately determined, the path and terminal equipment of a specific optical fiber can be identified, and the probability of errors during fiber core tracing is reduced.

[0007] Preferably, in S1, macrobending is performed on the light-emitting end of each optical fiber to be tested in turn and the current optical power of the optical fiber pigtail in the optical fiber bundle to be tested is detected, comprising the following steps: A fiber clamping device is used to perform periodic macrobending on the light-emitting end of each optical fiber to be tested in a short period of time according to a set clamping frequency, wherein the angle of the macrobending is set based on the configuration information of the optical fiber; The current optical power of each optical fiber pigtail in the optical fiber bundle to be tested is detected during macrobending and statistics are taken separately.

[0008] In this scheme, in order to keep the angle of each macrobend consistent when macrobending the light-emitting end of the optical fiber, a fiber clamping device can be used to generate an audio frequency signal and apply gentle low-frequency modulation pressure to add a coupled frequency signal to the online signal. Subsequently, after a few seconds of signal demodulation, the detection device can detect the coupled signal of the fiber clamping device and trigger an event. The detected signal will be reported to the mobile terminal, cloud and other information receiving terminals, so that the target optical fiber and its basic status can be accurately identified, achieving the purpose of troubleshooting and maintaining the optical fiber system, realizing the standardization of the optical fiber clamping operation, reducing the possibility of misjudgment of data and events detected during detection, and improving the accuracy of the fiber during fiber core mapping.

[0009] Preferably, in S2, obtaining an optical power attenuation curve set of the optical fiber pigtail in the optical fiber bundle to be tested based on the current optical power and the initial optical power includes the following steps: Obtaining the optical attenuation corresponding to different optical fibers based on the difference between the current optical power and the initial optical power of different optical fibers in the optical fiber bundle to be tested; A Cartesian coordinate system with time as the horizontal axis and light attenuation as the vertical axis is constructed, and an optical power attenuation curve set is constructed based on the regions of light attenuation corresponding to different optical fibers in the time dimension of the Cartesian coordinate system.

[0010] In this solution, in order to detect the optical power of the pigtail and quickly analyze the detected information, the optical attenuation of each optical fiber to be tested is obtained by comparing the detected current optical power with the initial optical power, and a set of optical power attenuation curves is constructed by statistics. The optical power attenuation curves of each optical fiber to be tested are then analyzed by computers and other analysis equipment. This solution can interact with the "optical path inventory" function module in the computer software, and then report the detected jumper pairing relationship in real time through the communication function module without affecting the normal optical path service transmission. This solution can accurately and efficiently sort out the multi-segment connection relationship from the equipment end in the computer room to the ODF in the computer room, the external optical cable, the external optical cross, the external optical cable to the ODF in the computer room, and the equipment end in the computer room, replacing the traditional manual method to check the position of the optical fiber pigtail, significantly improving the efficiency and accuracy of the fiber core inspection.

[0011] Preferably, the correlation between the set macrobending angle and the optical attenuation is obtained based on at least the type of optical fiber, the optical power of the optical signal transmitted in the optical fiber, and the macrobending angle, and the acquisition method includes the following steps: The macrobending angle of the optical fiber is increased sequentially, and the optical attenuation of the optical fiber is detected and recorded in real time, and a corresponding curve diagram of the optical attenuation and macrobending angle of optical fibers of different types and different optical powers is obtained; The corresponding curve graph of light attenuation and macrobending angle is analyzed to obtain the behavior trend of light attenuation, and the correlation between the macrobending angle and light attenuation is obtained based on the behavior trend of light attenuation.

[0012] In this scheme, since different optical fibers have different degrees of light attenuation caused by macrobending, which is mainly affected by factors such as the material of the optical fiber and the wavelength of the optical signal transmitted in the optical fiber, it is necessary to analyze the correlation between the macrobending angle and the light attenuation. By statistically analyzing the light attenuation of optical fibers of different types and different optical powers at different macrobending angles, it is found that although different bending angles will lead to different loss levels, their behavior trends are the same, thereby obtaining the bending characteristics of the optical power of the optical fiber. Therefore, as long as the optical power attenuation of a certain fiber tail meets the bending characteristics of the optical power of the optical fiber when the optical output end of a certain optical fiber to be tested is macrobent, it can be determined that the fiber tail corresponds to the optical output end of the optical fiber to be tested, and since the signal coupled in the optical fiber is in a corresponding relationship with the propagation direction of the light in the optical fiber when the light propagates in the optical fiber. Therefore, when other devices that affect the optical fiber angle are placed at the upper end of the clamping device, the coupled signal can only be reflected by the optical fiber inside the optical fiber, so the signal is very weak and can be ignored, so as not to affect the change of the optical power of the fiber tail, and ensure the accuracy of the survey.

[0013] Preferably, in S2, obtaining the optical fiber to be tested that meets the correlation relationship based on the correlation relationship between the set macrobending angle and the optical attenuation includes the following steps: Analyze the optical power attenuation curve set to obtain the optical power attenuation curve of each optical fiber to be tested within the macrobending time; If the attenuation behavior of the optical power attenuation curve conforms to the correlation between the macrobending angle and the optical attenuation and the optical power attenuation fluctuates periodically, the corresponding optical fiber is taken as the optical fiber to be tested that conforms to the correlation.

[0014] In this scheme, the optical power attenuation curve set is analyzed to obtain the optical power attenuation curve of each optical fiber to be tested within the macrobending time. Since a specific clamping frequency is used at the light-emitting end of the optical fiber to be tested to perform periodic macrobending on the light-emitting end of each optical fiber to be tested in a short period of time, the optical attenuation of the tail fiber of the tested optical fiber must not only meet the correlation between the macrobending angle and the optical attenuation, but also meet the requirement that the attenuation fluctuation is consistent with or close to the clamping frequency to determine that the tail fiber of the optical fiber corresponds to the optical fiber to be tested. Through this method, there is no need for manual participation in the detection and analysis of the data. Automated detection and analysis equipment is used to report the detected jumper pairing relationship in real time without affecting the normal optical path service transmission. The virtual jumper and waste fiber resources identified by the survey can also be removed, thereby releasing the virtual occupied optical cable core resources of the existing network and reducing the space waste of invalid resources. At the same time, the resource system can be updated synchronously to improve the digitalization capability of the existing fiber core connection.

[0015] Preferably, in S3, the optical fiber to be tested that meets the association relationship is used as the target optical fiber, the port information and the pigtail information corresponding to the target optical fiber are obtained, and an optical fiber pairing link is constructed based on the port information and the pigtail information; and all optical fibers to be tested are paired based on the optical fiber pairing link, including the following steps: Obtaining port information and pigtail information corresponding to the target optical fiber, wherein the port information includes at least a port number and a port type, and the pigtail information includes at least a pigtail number, a connection status, and an optical fiber type; According to the port information and pigtail information, the start port and the end port are connected through the pigtail to obtain a fiber pairing link; Based on the port information and pigtail information on the optical fiber pairing link, all optical fibers to be tested are checked, and the optical fibers that do not match the port information and pigtail information on the corresponding optical fiber pairing link are regarded as abnormal optical fibers, and abnormal signals are issued.

[0016] In this solution, after the pigtail corresponding to the optical fiber to be tested is found, the port information and pigtail information of the optical fiber can be analyzed. According to the port information and pigtail information, the starting port and the ending port are connected through the pigtail to obtain the optical fiber pairing link. Based on the port information and pigtail information on the optical fiber pairing link, all optical fibers to be tested are checked, and the positions of both ends of the optical fiber can be quickly found in the computer room or optical exchange scenario. It can interact with the analysis equipment and report the detected jumper pairing relationship in real time without affecting the normal optical path service transmission. It can accurately and efficiently sort out the multi-segment connection relationship from the computer room equipment end to the computer room ODF, the external optical cable, the external optical exchange, the external optical cable to the computer room ODF, and the computer room equipment end, thereby helping maintenance personnel to quickly sort out the line connection relationship of the optical fiber in the computer room, facilitating maintenance personnel to maintain the computer room, thereby ensuring communication quality.

[0017] Preferably, the larger the macrobending angle is, the greater the optical power attenuation is.

[0018] In this scheme, under ideal conditions, there is no loss when light is transmitted in a straight optical fiber. Bending loss is mainly caused by three factors: mode coupling, mode leakage and spatial filtering. When the optical fiber is bent, part of the guided mode in the core will be transformed into a radiation mode and radiate into the cladding to radiate energy. Bending loss can be divided into microbending loss and macrobending loss according to the bending form. The bending loss mechanism is different for different bending forms. When light is transmitted in the straight section of the optical fiber, the phases of the electric field and the magnetic field are in the same plane. However, when the light is transmitted to the curved part of the optical fiber, in order to maintain the phase characteristics of the straight section, the part close to the outer side of the optical fiber bend needs to have a faster phase velocity. This is because the wavefront of light will be compressed during propagation, resulting in an increase in wave velocity. If the curved part is long enough so that the phase velocity on the outside exceeds the speed of light in a vacuum, it means that the conduction mode in the optical fiber has been transformed into a radiation mode. In this case, the energy of the light will gradually leak out of the optical fiber, resulting in signal loss, thereby increasing the loss of the optical fiber. Therefore, the larger the macrobending angle, the greater the optical power attenuation.

[0019] Preferably, the abnormal signal at least includes an alarm signal light and mobile terminal alarm information.

[0020] In this solution, when an optical fiber is found whose port information and pigtail information do not match, an alarm signal is generated, including but not limited to the use of a warning light, abnormal processing information, a warning bell, etc., so that maintenance personnel can promptly discover the fault and handle it in time to ensure the business communication quality of the optical fiber.

[0021] Preferably, the optical fiber bundle to be tested has no less than 6 optical fibers.

[0022] In this solution, optical power detection equipment can be installed on the tail fibers of all optical fibers to be surveyed and tested, and the detected optical power can be analyzed in real time by computers and other analysis equipment. Then, macro-bending is performed on the light-emitting end of each optical fiber to be tested in turn. This allows multiple fiber cores to be surveyed at one time, without the need for traditional manual labor or detection equipment to survey each fiber one by one. This greatly improves the efficiency of surveying the fiber cores while ensuring the accuracy of the fiber.

[0023] In a second aspect, a technical solution also provided in an embodiment of the present invention is: an optical fiber pairing device, comprising: a fiber clamping device, the fiber clamping device is arranged at the light-emitting end of the optical fiber to be tested, and the light-emitting end of each optical fiber to be tested is subjected to periodic macrobending in a short period of time according to a set clamping frequency; The fiber pairing device is arranged at one end of the optical fiber pigtail to be tested, and cooperates with the fiber clamping device to detect the optical power attenuation change of the optical fiber to be tested. When it is detected that the optical attenuation of the optical fiber to be tested fluctuates periodically several times in a short period of time, the port information and pigtail information of the optical fiber to be tested are reported, and a fiber pairing link is constructed based on the port information and the pigtail information, and all optical fibers to be tested are paired based on the fiber pairing link.

[0024] In this solution, a fiber clamping device is used at the light-emitting end of the optical fiber to be tested, and a fiber alignment device is set at the pigtails of all optical fibers. The light-emitting end of the optical fiber to be tested is macro-bent by the fiber clamping device, and the optical power attenuation change of the optical fiber to be tested is detected by the fiber alignment device. The cooperation between the two realizes the fiber alignment operation without interrupting business communications, thereby ensuring the user experience. At the same time, the pigtail is not damaged during the fiber alignment process, thereby ensuring the service life of the optical fiber. It is also convenient to identify a large number of pigtails one by one through computers and other analysis equipment, without manual analysis. The staff only needs to perform macro-bends on the light-emitting ends of the optical fibers in turn to automatically pair the pigtails, which significantly reduces the fiber core tracing time and improves the fiber alignment efficiency.

[0025] The beneficial effects of the present invention are as follows: (1) The present invention performs macrobending on the light-emitting end of each optical fiber to be tested and detects the current optical power of the optical fiber pigtail in the optical fiber bundle to be tested to find the pigtail corresponding to the optical fiber light-emitting end, thereby realizing the fiber alignment operation without interrupting the service communication, thereby ensuring the user experience. At the same time, the pigtail is not damaged during the fiber alignment process, thereby ensuring the service life of the optical fiber; (2) The present invention obtains a set of optical power attenuation curves of optical fiber pigtails in the optical fiber bundle to be tested, and obtains the optical fiber to be tested that meets the correlation relationship by combining the correlation relationship between the set macrobending angle and the optical attenuation, so as to facilitate the one-to-one identification of a large number of pigtails by computer and other analysis equipment, without the need for manual analysis. The staff only needs to perform macrobending on the optical fiber light output end in turn to automatically pair the pigtails, which significantly reduces the time for fiber core tracing and improves the fiber pairing efficiency. (3) The present invention obtains the port information and pigtail information corresponding to the target optical fiber, constructs a fiber pairing link based on the port information and pigtail information, and then pairs all optical fibers to be tested based on the fiber pairing link. The fiber jumper relationship can be automatically derived through analysis equipment such as a computer to complete automatic optical path splicing without human intervention. The connection status of the optical fiber can be accurately determined, the path and terminal device of a specific optical fiber can be identified, and the probability of errors occurring during fiber core mapping can be reduced.

[0026] The above invention content is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented according to the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings. The drawings are only for the purpose of illustrating preferred embodiments and are not to be considered as limiting the present invention. Also, the same reference symbols are used throughout the drawings to represent the same parts.

[0028] Figure 1 This is a flow chart of an optical fiber pairing method of the present invention; Figure 2 The optical attenuation and macrobending angle corresponding curves of optical fibers of different types and different optical powers of the present invention are shown; Figure 3 It is a schematic diagram of an optical fiber pairing device of the present invention. DETAILED DESCRIPTION

[0029] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific implementation method described herein is only an optimal embodiment of the present invention, which is only used to explain the present invention and does not limit the scope of protection of the present invention. All other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0030] Before discussing the exemplary embodiments in more detail, it should be mentioned that some exemplary embodiments are described as processes or methods depicted as flow charts. Although the flow charts describe the operations (or steps) as sequential processes, many of the operations (or steps) therein can be implemented in parallel, concurrently, or simultaneously. In addition, the order of the operations can be rearranged. The process can be terminated when its operation is completed, but can also have additional steps not included in the drawings; the process can correspond to a method, function, procedure, subroutine, subprogram, etc.

[0031] Example: Figure 1 As shown, in order to solve the problem of low fiber pairing efficiency caused by difficulty in quickly identifying the corresponding relationship of the pigtails when there are many pigtails and the relationship is chaotic during the existing fiber pairing, this embodiment provides a fiber pairing method, including the following steps: S1: Obtaining the initial optical power of the optical fiber bundle to be tested; performing macrobending on the light-emitting end of each optical fiber to be tested in turn and detecting the current optical power of the optical fiber pigtail in the optical fiber bundle to be tested.

[0032] In this embodiment, the number of optical fibers in the optical fiber bundle to be tested is no less than 6.

[0033] In this embodiment, optical power detection equipment can be installed on the tail fibers of all optical fibers to be surveyed and tested, and the detected optical power can be analyzed in real time by computers and other analysis equipment. The light output end of each optical fiber to be tested can be macro-bent in turn, so that multiple fiber cores can be surveyed at one time without the need for traditional manual or detection equipment to survey one by one. The survey efficiency of the fiber cores is greatly improved while ensuring the accuracy of the fibers.

[0034] In this embodiment, macrobending is performed on the light-emitting end of each optical fiber to be tested in turn and the current optical power of the optical fiber pigtail in the optical fiber bundle to be tested is detected, which includes the following steps: A fiber clamping device is used to perform periodic macrobending on the light-emitting end of each optical fiber to be tested in a short period of time according to a set clamping frequency, wherein the angle of the macrobending is set based on the configuration information of the optical fiber; The current optical power of each optical fiber pigtail in the optical fiber bundle to be tested is detected during macrobending and statistics are taken separately.

[0035] In order to keep the angle of each macrobend consistent when macrobending the light-emitting end of the optical fiber, this embodiment can generate an audio frequency signal by using a fiber clamping device and apply gentle low-frequency modulation pressure, and add a coupled frequency signal to the online signal. Subsequently, after a few seconds of signal demodulation, the detection device can detect the coupled signal of the fiber clamping device and trigger an event. The detected signal will be reported to the mobile terminal, cloud and other information receiving terminals, so that the target optical fiber and its basic status can be accurately identified, so as to achieve the purpose of troubleshooting and maintaining the optical fiber system, realize the standardization of the clamping operation of the optical fiber, reduce the possibility of misjudgment of data and events detected during detection, and improve the accuracy of the fiber when the fiber core is traced.

[0036] When detecting optical power in this embodiment, it is necessary to ensure that the input optical wavelength corresponds to the wavelength detected by the device. In the optical fiber network, the units of optical power are usually expressed in milliwatts (mW) and decibel milliwatts (dBm). The relationship between the two is: 1mW = 0dBm, that is, 2mW = 3dBm. Decibel milliwatts less than 1mW are negative values, and the relationship can be expressed by the following formula: The optical power loss L (optical loss) (db) is often used to standardize the optical fiber attenuation, where the unit is db, and the calculation formula is: When exposed to strong light, the current generated is the photocurrent, and this electrical signal will change accordingly with the change of light. The output current formula is as follows: I OUT =I DARK +I PD Among them I DARK is the dark current of the photodiode, I PD is the current generated by the optical power on the PD tube, I OUT is the photodiode output current.

[0037] The responsivity of a photodiode is the photocurrent (I PD ) and the incident light power (P) is R(λ), which is the responsivity of the photodiode.

[0038] Where R(λ) is the value given by the manufacturer, and its value is: That is, the ratio of 1mA current to 1mW optical power. Through this relationship, the corresponding relationship between optical power and generated current can be found. Since computers and other analytical equipment can only detect and calculate voltage, the current signal is converted into a voltage signal for detection. Without considering the influence of current conversion and other parameters, it is a relatively ideal model. It can be known that the calculation formula and algorithm of optical power can refer to the following formula: V OUT =I OUT *R LOAD By converting the response of the PD, the incident optical power can be converted into a voltage signal, so that the magnitude of the incident optical power can be obtained by detecting the magnitude of the voltage value.

[0039] S2: based on the current optical power and the initial optical power, an optical power attenuation curve set of the optical fiber pigtail in the optical fiber bundle to be tested is obtained, and the optical fiber to be tested that meets the correlation relationship is obtained in combination with the correlation relationship between the set macrobend angle and the optical attenuation.

[0040] In this embodiment, obtaining an optical power attenuation curve set of an optical fiber pigtail in the optical fiber bundle to be tested based on the current optical power and the initial optical power includes the following steps: Obtaining the optical attenuation corresponding to different optical fibers based on the difference between the current optical power and the initial optical power of different optical fibers in the optical fiber bundle to be tested; A Cartesian coordinate system with time as the horizontal axis and light attenuation as the vertical axis is constructed, and an optical power attenuation curve set is constructed based on the regions of light attenuation corresponding to different optical fibers in the time dimension of the Cartesian coordinate system.

[0041] In order to detect the optical power of the pigtail and quickly analyze the detected information, this embodiment compares the detected current optical power with the initial optical power to obtain the optical attenuation of each optical fiber to be tested, and statistically constructs an optical power attenuation curve set, and then analyzes the optical power attenuation curve of each optical fiber to be tested through an analysis device such as a computer, which can interact with the "optical path inventory" function module in the computer software, and then report the detected jumper pairing relationship in real time through the communication function module without affecting the normal optical path service transmission. It can accurately and efficiently sort out the multi-segment connection relationship from the computer room equipment end to the computer room ODF, the external optical cable, the external optical cross, the external optical cable to the computer room ODF, and the computer room equipment end, replacing the traditional manual method to check the position of the optical fiber pigtail, and significantly improving the efficiency and accuracy of the fiber core inspection.

[0042] In this embodiment, the correlation between the set macrobend angle and the optical attenuation is obtained based on at least the type of optical fiber, the optical power of the optical signal transmitted in the optical fiber, and the macrobend angle, and the acquisition method includes the following steps: The macrobending angle of the optical fiber is increased successively, and the optical attenuation of the optical fiber is detected and recorded in real time, and the corresponding curves of the optical attenuation and macrobending angle of optical fibers of different types and different optical powers are obtained, such as Figure 2 As shown; The corresponding curve graph of light attenuation and macrobending angle is analyzed to obtain the behavior trend of light attenuation, and the correlation between the macrobending angle and light attenuation is obtained based on the behavior trend of light attenuation.

[0043] In this embodiment, since different optical fibers have different degrees of light attenuation caused by macrobending, which is mainly affected by factors such as the material of the optical fiber and the wavelength of the optical signal transmitted in the optical fiber, it is necessary to analyze the correlation between the macrobending angle and the light attenuation. By statistically analyzing the light attenuation of optical fibers of different types and different optical powers at different macrobending angles, it is found that although different bending angles will lead to different loss levels, their behavior trends are the same, thereby obtaining the bending characteristics of the optical power of the optical fiber. Therefore, as long as the optical power attenuation of a certain pigtail fiber meets the bending characteristics of the optical power of the optical fiber when the optical output end of a certain optical fiber to be tested is macrobent, it can be determined that the pigtail fiber corresponds to the optical output end of the optical fiber to be tested, and since the signal coupled in the optical fiber is in a corresponding relationship with the propagation direction of the light in the optical fiber when the light propagates in the optical fiber. Therefore, when other devices that affect the optical fiber angle are placed at the upper end of the clamping device, the coupled signal can only be reflected by the optical fiber inside the optical fiber, so the signal is very weak and can be ignored, so as not to affect the change of the optical power of the pigtail fiber, and ensure the accuracy of the survey.

[0044] The reason why the optical power attenuation occurs when the optical fiber is macrobent in this embodiment is because of the light leakage phenomenon. Light leakage when the optical fiber is bent means that when the optical fiber is bent, the optical signal therein will escape from the optical fiber, thereby causing signal loss or interference. The factors affecting light leakage when the optical fiber is bent mainly include: bending radius: The bending radius of the optical fiber refers to the radius of the curve formed when the optical fiber is bent. The smaller the bending radius, the greater the curvature, and the greater the deflection of the light beam in the optical fiber when it is bent, causing part of the optical signal to exceed the critical angle of total reflection and escape from the optical fiber.

[0045] Fiber diameter: When the fiber diameter is large, the beam deflection is relatively small at the same bending radius, so the light leakage is relatively small. For thinner fibers, the beam deflection is more significant at the same curvature, resulting in more serious light leakage.

[0046] Fiber material: The refractive index of the fiber material determines the speed and angle change of light propagation in the fiber. Fibers made of different materials have different refractive indices, which affect the degree of light beam deflection when the fiber is bent, thereby affecting the light leakage. When the refractive index difference between the fiber core and the cladding is greater, total reflection is more likely to occur, and the less light leakage occurs when the fiber is bent.

[0047] Fiber structure: The structures of single-mode fiber and multi-mode fiber are different, resulting in different light signal loss when bending. Generally speaking, single-mode fiber leaks less light when bending, while multi-mode fiber leaks more light when bending due to the diversity of light signals.

[0048] Bending method: Different bending methods will produce different stresses and deformations on the optical fiber, thus affecting the loss of optical signals.

[0049] Wavelength of the optical signal: As the wavelength changes, the refractive index of the material will also be different, because the material has different responses to light of different wavelengths. When light signals of different wavelengths propagate in the optical fiber, the shorter wavelength light signal has a higher refractive index and is more likely to be totally reflected when propagating in the material, resulting in relatively less light leakage. Light with a longer wavelength may be more likely to leak in the curved area due to its lower refractive index.

[0050] In this embodiment, the bending loss of light adopts macrobending loss. The currently widely used optical fiber is soft and easy to bend, which brings certain conveniences to the laying of optical fiber, but also brings some problems. Due to its easy-to-bend characteristics, the optical fiber often bends greatly. When the optical fiber is greatly bent, the bending radius is small, and when the light is transmitted inside the fiber core, the light transmission path will be changed, and it may leak into the cladding or even leak out.

[0051] The macroscopic bending loss of optical fiber refers to the loss generated when the bending radius of the optical fiber is much larger than the core radius of the optical fiber. In the macroscopically bent optical fiber, spatial filtering, mode leakage and mode coupling work together to produce bending loss, among which spatial filtering plays a major role. The spatial filtering effect is due to the change in the propagation angle of the light beam when the optical fiber is bent, which destroys the total reflection in the straight optical fiber. The high-order mode in the bent optical fiber will refract from the core to the cladding, and in this process it will carry energy and leak into the cladding. Therefore, the greater the degree of bending of the optical fiber, the greater the impact of the spatial filtering effect will be, and the greater the transmission loss will be.

[0052] In this embodiment, the optical fiber to be tested that meets the correlation relationship is obtained by combining the correlation relationship between the set macrobending angle and the optical attenuation, including the following steps: Analyze the optical power attenuation curve set to obtain the optical power attenuation curve of each optical fiber to be tested within the macrobending time; If the attenuation behavior of the optical power attenuation curve conforms to the correlation between the macrobending angle and the optical attenuation and the optical power attenuation fluctuates periodically, the corresponding optical fiber is taken as the optical fiber to be tested that conforms to the correlation.

[0053] This embodiment obtains the optical power attenuation curve of each optical fiber to be tested within the macrobending time by analyzing the optical power attenuation curve set. Since a specific clamping frequency is used at the light-emitting end of the optical fiber to be tested to perform periodic macrobending on the light-emitting end of each optical fiber to be tested in a short period of time, the optical attenuation of the tail fiber of the tested optical fiber must not only meet the correlation between the macrobending angle and the optical attenuation, but also meet the requirement that the attenuation fluctuation is consistent with or close to the clamping frequency to determine that the tail fiber of the optical fiber corresponds to the optical fiber to be tested. Through this method, there is no need for manual participation in the detection and analysis of the data. Automated detection and analysis equipment is used to report the detected jumper pairing relationship in real time without affecting the normal optical path service transmission. The virtual jumper fibers and waste fiber resources identified by the survey can also be removed, thereby releasing the virtual occupied optical cable core resources of the existing network and reducing the space waste of invalid resources. At the same time, the resource system can be updated synchronously to improve the digitalization capability of the existing fiber core connection.

[0054] S3: taking the optical fiber to be tested that meets the association relationship as the target optical fiber, obtaining the port information and pigtail information corresponding to the target optical fiber, building an optical fiber pairing link based on the port information and pigtail information; and pairing all the optical fibers to be tested based on the optical fiber pairing link.

[0055] In this embodiment, the optical fiber to be tested that meets the association relationship is used as the target optical fiber, the port information and the pigtail information corresponding to the target optical fiber are obtained, and an optical fiber pairing link is constructed based on the port information and the pigtail information; and all optical fibers to be tested are paired based on the optical fiber pairing link, including the following steps: Obtaining port information and pigtail information corresponding to the target optical fiber, wherein the port information includes at least a port number and a port type, and the pigtail information includes at least a pigtail number, a connection status, and an optical fiber type; According to the port information and pigtail information, the start port and the end port are connected through the pigtail to obtain a fiber pairing link; Based on the port information and pigtail information on the optical fiber pairing link, all optical fibers to be tested are checked, and the optical fibers that do not match the port information and pigtail information on the corresponding optical fiber pairing link are regarded as abnormal optical fibers, and abnormal signals are issued.

[0056] In this embodiment, after the pigtail corresponding to the optical fiber to be tested is found, the port information and pigtail information of the optical fiber can be analyzed. According to the port information and pigtail information, the starting port and the ending port are connected through the pigtail to obtain the optical fiber pairing link. Based on the port information and pigtail information on the optical fiber pairing link, all optical fibers to be tested are checked, and the positions of the two ends of the optical fiber can be quickly found in the computer room or optical exchange scenario. It can interact with the analysis equipment and report the detected jumper pairing relationship in real time without affecting the normal optical path service transmission. It can accurately and efficiently sort out the multi-segment connection relationship from the computer room equipment end to the computer room ODF, the external optical cable, the external optical exchange, the external optical cable to the computer room ODF, and the computer room equipment end, thereby helping maintenance personnel to quickly sort out the line connection relationship of the optical fiber in the computer room, facilitating maintenance personnel to maintain the computer room, thereby ensuring communication quality.

[0057] In this embodiment, the larger the macrobend angle is, the greater the optical power attenuation is.

[0058] In this embodiment, under ideal conditions, there is no loss when light is transmitted in a straight optical fiber. Bending loss is mainly caused by three factors: mode coupling, mode leakage and spatial filtering. Part of the guided mode in the core will be converted into a radiation mode when the optical fiber is bent and radiate into the cladding to generate energy radiation. Bending loss can be divided into micro-bending loss and macro-bending loss according to the bending form. Different bending forms have different mechanisms for generating bending loss. When light is transmitted in the straight section of the optical fiber, the phases of the electric field and the magnetic field are located in the same plane. However, when the light is transmitted to the curved part of the optical fiber, in order to maintain the phase characteristics of the straight section, the part close to the outer side of the optical fiber bend needs to have a faster phase velocity. This is because the wavefront of light will be compressed during propagation, resulting in an increase in wave velocity. If the curved part is long enough so that the phase velocity on the outside exceeds the speed of light in a vacuum, it means that the conduction mode in the optical fiber has been converted into a radiation mode. In this case, the energy of the light will gradually leak out of the optical fiber, resulting in signal loss, thereby increasing the loss of the optical fiber. Therefore, the larger the macrobending angle, the greater the optical power attenuation.

[0059] In this embodiment, the abnormal signal at least includes an alarm signal light and mobile terminal alarm information.

[0060] In this embodiment, when an optical fiber whose port information and pigtail information do not match is found, an alarm signal is generated, including but not limited to a warning light, abnormal processing information, a warning bell, etc., so that maintenance personnel can promptly discover the fault and handle it in time to ensure the business communication quality of the optical fiber.

[0061] This embodiment performs macrobending on the light-emitting end of each optical fiber to be tested and detects the current optical power of the optical fiber pigtail in the optical fiber bundle to be tested to find the pigtail corresponding to the optical fiber light-emitting end, thereby realizing the fiber-pairing operation without interrupting business communication, thereby ensuring the user experience, and at the same time, the pigtail is not damaged during the fiber-pairing process, thereby ensuring the service life of the optical fiber; by obtaining the optical power attenuation curve set of the optical fiber pigtail in the optical fiber bundle to be tested, and combining the correlation between the set macrobending angle and the optical attenuation to obtain the optical fiber to be tested that meets the correlation relationship, it is convenient to identify a large number of pigtails one by one through analysis equipment such as computers, without the need for manual operation For manual analysis, the staff only needs to perform macro bends on the optical fiber output ends in turn to automatically pair the pigtails, which significantly reduces the fiber core tracing time and improves the fiber pairing efficiency. By obtaining the port information and pigtail information corresponding to the target optical fiber, a fiber pairing link is constructed based on the port information and pigtail information, and then all optical fibers to be tested are paired based on the fiber pairing link. The fiber jumper relationship can be automatically derived through computers and other analysis equipment to complete automatic optical path splicing without human intervention. The fiber connection status can be accurately determined, the path and terminal equipment of a specific optical fiber can be identified, and the probability of errors during fiber core tracing is reduced.

[0062] Example 2: Figure 3 As shown, this embodiment also provides an optical fiber pairing device, including: A fiber clamping device, which is arranged at the light-emitting end of the optical fiber to be tested, and performs periodic macrobending on the light-emitting end of each optical fiber to be tested in a short period of time according to a set clamping frequency; The fiber pairing device is arranged at one end of the optical fiber pigtail to be tested, and cooperates with the fiber clamping device to detect the optical power attenuation change of the optical fiber to be tested. When it is detected that the optical attenuation of the optical fiber to be tested fluctuates periodically several times in a short period of time, the port information and pigtail information of the optical fiber to be tested are reported, and a fiber pairing link is constructed based on the port information and the pigtail information, and all optical fibers to be tested are paired based on the fiber pairing link.

[0063] In this embodiment, a fiber clamping device is used at the light-emitting end of the optical fiber to be tested, and a fiber alignment device is arranged at the pigtails of all optical fibers. The light-emitting end of the optical fiber to be tested is macro-bent by the fiber clamping device, and the optical power attenuation change of the optical fiber to be tested is detected by the fiber alignment device. The fiber alignment operation is realized without interrupting business communication through the cooperation between the two, thereby ensuring the user experience. Meanwhile, the pigtail is not damaged during the fiber alignment process, thereby ensuring the service life of the optical fiber. It is also convenient to identify a large number of pigtails one by one by computers and other analysis equipment without manual analysis. The staff only needs to perform macro-bends on the light-emitting ends of the optical fibers in turn to automatically pair the pigtails, thereby significantly reducing the fiber core tracing time and improving the fiber alignment efficiency.

[0064] It can be seen from the above embodiments that at least the following substantial effects are achieved: (1) The present invention performs macrobending on the light-emitting end of each optical fiber to be tested and detects the current optical power of the optical fiber pigtail in the optical fiber bundle to be tested to find the pigtail corresponding to the optical fiber light-emitting end, thereby realizing the fiber alignment operation without interrupting service communication, thereby ensuring the user experience. At the same time, the pigtail is not damaged during the fiber alignment process, thereby ensuring the service life of the optical fiber; (2) The present invention obtains a set of optical power attenuation curves of optical fiber pigtails in the optical fiber bundle to be tested, and obtains the optical fiber to be tested that meets the correlation relationship by combining the correlation relationship between the set macrobending angle and the optical attenuation, so as to facilitate the one-to-one identification of a large number of pigtails by computer and other analysis equipment, without the need for manual analysis. The staff only needs to perform macrobending on the optical fiber light output end in turn to automatically pair the pigtails, which significantly reduces the time for fiber core tracing and improves the fiber pairing efficiency. (3) The present invention obtains the port information and pigtail information corresponding to the target optical fiber, constructs a fiber pairing link based on the port information and pigtail information, and then pairs all optical fibers to be tested based on the fiber pairing link. The fiber jumper relationship can be automatically derived through analysis equipment such as a computer to complete automatic optical path splicing without human intervention. The connection status of the optical fiber can be accurately determined, the path and terminal device of a specific optical fiber can be identified, and the probability of errors occurring during fiber core mapping can be reduced.

[0065] The specific implementation described above is a preferred implementation of an optical fiber pairing method and device of the present invention, and is not intended to limit the specific implementation scope of the present invention. The scope of the present invention includes but is not limited to this specific implementation. All equivalent changes made in accordance with the shape and structure of the present invention are within the protection scope of the present invention.

Claims

1. A method for optical fiber pairing, characterized in that: The following steps are involved: S1, obtaining the initial optical power of the optical fiber bundle to be tested; Perform macrobending on the light-emitting end of each optical fiber to be tested in turn and detect the current optical power of the optical fiber pigtail in the optical fiber bundle to be tested; S2, obtaining an optical power attenuation curve set of the optical fiber pigtail in the optical fiber bundle to be tested based on the current optical power and the initial optical power, and obtaining an optical fiber to be tested that meets the correlation relationship based on the correlation relationship between the set macrobend angle and the optical attenuation; S3, taking the optical fiber to be tested that meets the association relationship as the target optical fiber, obtaining the port information and pigtail information corresponding to the target optical fiber, and building an optical fiber pairing link based on the port information and pigtail information; and pairing all optical fibers to be tested based on the optical fiber pairing link.

2. The optical fiber pairing method according to claim 1, characterized in that: In S1, macrobending is performed on the light-emitting end of each optical fiber to be tested in turn and the current optical power of the optical fiber pigtail in the optical fiber bundle to be tested is detected, including the following steps: A fiber clamping device is used to perform periodic macrobending on the light-emitting end of each optical fiber to be tested in a short period of time according to a set clamping frequency, wherein the angle of the macrobending is set based on the configuration information of the optical fiber; The current optical power of each optical fiber pigtail in the optical fiber bundle to be tested is detected during macrobending and statistics are taken separately.

3. The optical fiber pairing method according to claim 1, characterized in that: In S2, based on the current optical power and the initial optical power, an optical power attenuation curve set of the optical fiber pigtail in the optical fiber bundle to be tested is obtained, including the following steps: Obtaining the optical attenuation corresponding to different optical fibers based on the difference between the current optical power and the initial optical power of different optical fibers in the optical fiber bundle to be tested; A Cartesian coordinate system with time as the horizontal axis and light attenuation as the vertical axis is constructed, and an optical power attenuation curve set is constructed based on the regions of light attenuation corresponding to different optical fibers in the time dimension of the Cartesian coordinate system.

4. The optical fiber pairing method according to claim 1, characterized in that: The correlation between the set macrobending angle and the optical attenuation is obtained based on at least the type of optical fiber, the optical power of the optical signal transmitted in the optical fiber, and the macrobending angle, and the acquisition method includes the following steps: The macrobending angle of the optical fiber is increased sequentially, and the optical attenuation of the optical fiber is detected and recorded in real time, and a corresponding curve diagram of the optical attenuation and macrobending angle of optical fibers of different types and different optical powers is obtained; The corresponding curve graph of light attenuation and macrobending angle is analyzed to obtain the behavior trend of light attenuation, and the correlation between the macrobending angle and light attenuation is obtained based on the behavior trend of light attenuation.

5. The optical fiber pairing method according to claim 1, characterized in that: In S2, the optical fiber to be tested that meets the correlation relationship is obtained by combining the correlation relationship between the set macrobend angle and the optical attenuation, including the following steps: Analyze the optical power attenuation curve set to obtain the optical power attenuation curve of each optical fiber to be tested within the macrobending time; If the attenuation behavior of the optical power attenuation curve conforms to the correlation between the macrobending angle and the optical attenuation and the optical power attenuation fluctuates periodically, the corresponding optical fiber is taken as the optical fiber to be tested that conforms to the correlation.

6. The optical fiber pairing method according to claim 1, characterized in that: In S3, the optical fiber to be tested that meets the association relationship is used as the target optical fiber, the port information and the pigtail information corresponding to the target optical fiber are obtained, and the optical fiber pairing link is constructed based on the port information and the pigtail information; Pairing all optical fibers to be tested based on the optical fiber pairing link includes the following steps: Obtaining port information and pigtail information corresponding to the target optical fiber, wherein the port information includes at least a port number and a port type, and the pigtail information includes at least a pigtail number, a connection status, and an optical fiber type; According to the port information and pigtail information, the start port and the end port are connected through the pigtail to obtain a fiber pairing link; Based on the port information and pigtail information on the optical fiber pairing link, all optical fibers to be tested are checked, and the optical fibers that do not match the port information and pigtail information on the corresponding optical fiber pairing link are regarded as abnormal optical fibers, and abnormal signals are issued.

7. An optical fiber pairing method according to claim 4 or 5, characterized in that: The larger the macrobending angle is, the greater the optical power attenuation is.

8. The optical fiber pairing method according to claim 6, characterized in that: The abnormal signal at least includes an alarm signal light and mobile terminal alarm information.

9. An optical fiber line intelligent fiber pairing method according to claim 1, 2 or 3, characterized in that: The number of optical fibers in the optical fiber bundle to be tested is no less than 6.

10. An optical fiber pairing device, applicable to an optical fiber pairing method according to any one of claims 1 to 9, characterized in that: include: A fiber clamping device, which is arranged at the light-emitting end of the optical fiber to be tested, and performs periodic macrobending on the light-emitting end of each optical fiber to be tested in a short period of time according to a set clamping frequency; The fiber pairing device is arranged at one end of the optical fiber pigtail to be tested, and cooperates with the fiber clamping device to detect the optical power attenuation change of the optical fiber to be tested. When it is detected that the optical attenuation of the optical fiber to be tested fluctuates periodically several times in a short period of time, the port information and pigtail information of the optical fiber to be tested are reported, and a fiber pairing link is constructed based on the port information and the pigtail information, and all optical fibers to be tested are paired based on the fiber pairing link.

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