An optical fiber line attenuation measurement method and device, electronic equipment and storage medium

Abstract

The application discloses a kind of optical fiber line attenuation measurement methods, applied to the system comprising measured optical fiber, optical reflector and optical fiber line attenuation measurement device, by optical fiber line attenuation measurement device to measured optical fiber launch light measurement pulse signal, obtain the first data group corresponding to original light measurement pulse signal from the measurement data collected in optical fiber line attenuation measurement device, and obtain the second data group corresponding to contrast light measurement pulse signal from the measurement data collected in optical fiber line attenuation measurement device, and determine the attenuation value of measured optical fiber according to the first data group and the second data group.So as to be able to reduce the demand of active equipment arrangement under the premise of improving the speed of optical fiber line attenuation measurement, greatly reduce system cost and measurement workload.

Description

Technical Field

[0001] This invention relates to the field of optical fiber measurement technology, and in particular to a method for measuring optical fiber line attenuation. The invention also relates to an optical fiber line attenuation measuring device, electronic equipment, and storage medium. Background Technology

[0002] There are typically two methods for measuring fiber optic line attenuation: one is to use a light source and an optical power meter, and the other is to use an OTDR. The two measurement methods are as follows:

[0003] (1) When using a light source and an optical power meter to measure the attenuation of an optical fiber line, a light source is used at one end of the optical fiber under test to inject an optical signal into the optical fiber under test. At the same time, an optical power meter is used at the other end of the optical fiber under test to measure the level of the received optical signal power. Then, the optical power level of the optical fiber line is obtained by subtracting the level of the light source's light power level from the level of the optical power meter's light power level.

[0004] (2) When using an OTDR to measure fiber optic line attenuation, you only need to use the OTDR to measure one end of the fiber under test to obtain the fiber optic line attenuation level.

[0005] Regarding the two existing methods for measuring fiber optic line attenuation, the advantage of using a light source and optical power meter is the low cost of the measuring instrument, but it usually requires the operator to operate at both ends of the fiber under test, which is inefficient. On the other hand, the advantage of using an OTDR for measuring fiber optic line attenuation is that the operator only needs to operate at one end of the fiber under test, which is efficient, but the cost of the measuring instrument is higher.

[0006] In developing this invention, the inventors discovered that when simultaneously measuring the attenuation of a large number of optical fibers in an online optical cable monitoring system, measuring a single fiber typically takes ten seconds to one minute. Using optical switches for alternating measurements, completing a single measurement cycle can even take half an hour when the number of monitored fibers is large. Therefore, in online optical cable monitoring systems, to achieve real-time measurement requirements, a common approach is to use an OTDR with optical switches for alternating measurements. For each fiber under test, a light source and an optical power meter are placed at both ends. Once the line attenuation of a fiber exceeds a threshold, the optical switch is commanded to switch to that fiber to initiate OTDR measurement of its performance. This requires placing active devices at both ends of the fiber and simultaneously deploying the OTDR measuring instrument, increasing the cost of the measurement equipment, the equipment station, and the associated power supply, significantly increasing the cost of fiber attenuation measurement. Summary of the Invention

[0007] This invention provides a method, apparatus, electronic device, and storage medium for measuring fiber optic line attenuation, which improves the speed of fiber optic line attenuation measurement while reducing the need for active equipment placement, and greatly reduces system cost and measurement workload.

[0008] In a first aspect, a method for measuring fiber optic line attenuation is provided, applied to a system comprising an optical fiber under test, an optical reflector, and an optical fiber line attenuation measuring device, wherein the optical reflector is connected to one end of the optical fiber under test, and the optical fiber line attenuation measuring device is connected to the other end of the optical fiber under test, the method comprising:

[0009] The optical fiber line attenuation measuring device transmits an optical measurement pulse signal to the optical fiber under test. The optical measurement pulse signal is divided by the optical fiber line attenuation measuring device into an original optical measurement pulse signal that has not passed through the optical fiber under test and a comparison optical measurement pulse signal that has passed through the optical fiber under test and is reflected by the optical reflector.

[0010] A first data group corresponding to the original optical measurement pulse signal is obtained from the measurement data collected by the optical fiber line attenuation measurement device, and a second data group corresponding to the comparison optical measurement pulse signal is obtained from the measurement data collected by the optical fiber line attenuation measurement device. The first data group is obtained based on the number of optical measurement pulse signals, and the second data group is obtained based on the circuit noise parameters in the measurement data.

[0011] The attenuation value of the optical fiber under test is determined based on the first data set and the second data set.

[0012] In some embodiments, before obtaining the first data group corresponding to the original optical measurement pulse signal from the measurement data collected from the optical fiber line attenuation measurement device, the method further includes:

[0013] The signal received by the optical fiber line attenuation measuring device is converted into a data set.

[0014] Extract signal data sets and circuit noise data sets from the data;

[0015] The signal data group is processed according to the circuit noise group to obtain the measurement data.

[0016] In some embodiments, obtaining a first data group corresponding to the original optical measurement pulse signal from the measurement data collected by the optical fiber line attenuation measurement device specifically involves:

[0017] The first data group consists of consecutive numbers in the measurement data whose values ​​are greater than a first threshold, where the first threshold is a specified multiple of the number of optical measurement pulse signals.

[0018] In some embodiments, obtaining a second data set corresponding to the comparison light measurement pulse signal from the measurement data collected by the fiber optic line attenuation measurement device specifically involves:

[0019] The last consecutive group of values ​​in the measurement data that are greater than the second threshold is taken as the second data group, and the second threshold is a specified multiple of the root mean square of the circuit noise data group.

[0020] In some embodiments, the attenuation value of the optical fiber under test is determined based on the first data group and the second data group, specifically as follows:

[0021] Determine the average values ​​of the first data set and the second data set respectively;

[0022] The attenuation value is determined based on the average value of the first data set, the average value of the second data set, and a preset calibration value.

[0023] Secondly, a fiber optic line attenuation measuring device is provided, applied in a system comprising a fiber under test, a light reflector, and the fiber optic line attenuation measuring device, wherein the light reflector is connected to one end of the fiber under test, and the fiber optic line attenuation measuring device is connected to the other end of the fiber under test, and the fiber optic line attenuation measuring device comprises:

[0024] An optical transmitter, connected to an optical splitter module, is used to transmit optical measurement pulse signals to the optical fiber under test through the optical splitter module;

[0025] The optical splitter module is connected to the optical fiber under test and the signal conversion module, respectively, and is used to split the optical measurement pulse signal into the original optical measurement pulse signal that has not passed through the optical fiber under test and the comparison optical measurement pulse signal that has passed through the optical fiber under test and is reflected by the optical reflector.

[0026] The signal conversion module is connected to the optical splitter module and is used to acquire a first data group corresponding to the original optical measurement pulse signal, and to acquire a second data group corresponding to the comparison optical measurement pulse signal from the measurement data collected from the optical fiber line attenuation measurement device. The first data group is acquired based on the number of optical measurement pulse signals, and the second data group is acquired based on the circuit noise parameters in the measurement data.

[0027] A control and calculation module is used to determine the attenuation value of the optical fiber under test based on the first data set and the second data set.

[0028] In some embodiments, the optical splitting module specifically includes a first optical splitter and a second optical splitter, wherein:

[0029] The first optical splitter is connected to the optical transmitter and the optical fiber under test, and is used to split the optical measurement pulse signal into a signal directed to the optical fiber under test and a signal directed to the second optical splitter.

[0030] The second optical splitter is connected to the first optical splitter and the signal conversion module, respectively, and is used to send the contrast light measurement pulse signal after passing through the optical fiber under test and being reflected by the light reflector and the original light measurement pulse signal that has not passed through the optical fiber under test to the signal conversion module.

[0031] In some embodiments, the signal conversion module specifically includes a transimpedance amplifier and an analog-to-digital converter circuit, wherein:

[0032] The transimpedance amplifier is connected to the second optical splitter and the analog-to-digital converter circuit respectively, and is used to receive the pulse signal transmitted by the second optical splitter and output the pulse signal to the analog-to-digital converter circuit.

[0033] The analog-to-digital converter circuit is connected to the transimpedance amplifier and the control and calculation module, respectively, and is used to sample and digitally convert the signal output by the transimpedance amplifier before sending it to the control and calculation module.

[0034] Thirdly, an electronic device, characterized in that it comprises:

[0035] Processor; and

[0036] Memory for storing the executable instructions of the processor;

[0037] The processor is configured to execute the fiber optic line attenuation measurement method described above by executing the executable instructions.

[0038] Fourthly, a computer-readable storage medium is provided, on which a computer program is stored, which, when executed by a processor, implements the optical fiber line attenuation measurement method as described in any of the above claims.

[0039] By applying the above technical solution, a fiber optic line attenuation measurement method is provided. This method is applied to a system including the fiber under test, a light reflector, and a fiber optic line attenuation measurement device. The device transmits optical measurement pulse signals to the fiber under test. A first data set corresponding to the original optical measurement pulse signal is obtained from the measurement data collected by the device, and a second data set corresponding to a comparison optical measurement pulse signal is obtained from the same data set. The attenuation value of the fiber under test is then determined based on the first and second data sets. This method improves the speed of fiber optic line attenuation measurement while reducing the need for active equipment placement, significantly reducing system costs and measurement workload. Attached Figure Description

[0040] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0041] Figure 1 This is a schematic flowchart of a fiber optic line attenuation measurement method proposed in this invention.

[0042] Figure 2 The structure of the fiber optic line attenuation measurement device in a specific embodiment of the present invention is shown below;

[0043] Figure 3 This is a schematic diagram of the measurement data signal a obtained by the fiber optic line attenuation measuring device in a specific embodiment of the present invention;

[0044] Figure 4 This is a schematic diagram of the measurement data signal b obtained by the fiber optic line attenuation measurement device in a specific embodiment of the present invention;

[0045] Figure 5 This is a schematic diagram illustrating the steps of measuring fiber optic line attenuation in a specific embodiment of the present invention;

[0046] Figure 6 This is a schematic diagram of the optical fiber line attenuation measurement device proposed in this invention. Detailed Implementation

[0047] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0048] It should be noted that other embodiments of this application will readily conceive of by those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and embodiments are to be considered exemplary only, and the true scope and spirit of this application are indicated in the claims section.

[0049] It should be understood that this application is not limited to the precise structures described below and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

[0050] The following is combined Figure 1 This application describes a fiber optic line attenuation measurement method according to exemplary embodiments thereof. It should be noted that the following application scenarios are shown only to facilitate understanding of the spirit and principles of this application, and the embodiments of this application are not limited in any way. Rather, the embodiments of this application can be applied to any applicable scenario.

[0051] It should be noted that this method is applied to a system including the optical fiber under test, a light reflector, and an optical fiber line attenuation measuring device. The light reflector is connected to one end of the optical fiber under test, and the optical fiber line attenuation measuring device is connected to the other end of the optical fiber under test. The method includes the following steps:

[0052] S101, the optical fiber line attenuation measuring device transmits an optical measurement pulse signal to the optical fiber under test. The optical measurement pulse signal is divided by the optical fiber line attenuation measuring device into an original optical measurement pulse signal that has not passed through the optical fiber under test and a comparison optical measurement pulse signal that has passed through the optical fiber under test and is reflected by the optical reflector.

[0053] S102, obtain a first data group corresponding to the original optical measurement pulse signal from the measurement data collected by the optical fiber line attenuation measurement device, and obtain a second data group corresponding to the comparison optical measurement pulse signal from the measurement data collected by the optical fiber line attenuation measurement device. The first data group is obtained based on the number of optical measurement pulse signals, and the second data group is obtained based on the circuit noise parameters in the measurement data.

[0054] In this embodiment, before obtaining the first data group corresponding to the original optical measurement pulse signal from the measurement data collected by the optical fiber line attenuation measurement device, the method further includes:

[0055] The signal received by the fiber optic line attenuation measuring device is converted into a data set. Signal data sets and circuit noise data sets are extracted from the data set. The signal data sets are processed according to the circuit noise data sets to obtain the measurement data.

[0056] In a specific application scenario, the first data group corresponding to the original optical measurement pulse signal is obtained from the measurement data collected by the optical fiber line attenuation measurement device, specifically as follows:

[0057] The first data group consists of consecutive numbers in the measurement data whose values ​​are greater than a first threshold, where the first threshold is a specified multiple of the number of optical measurement pulse signals.

[0058] The second data set corresponding to the comparison light measurement pulse signal is obtained from the measurement data collected by the optical fiber line attenuation measurement device, specifically as follows:

[0059] The last consecutive group of values ​​in the measurement data that are greater than the second threshold is taken as the second data group, and the second threshold is a specified multiple of the root mean square of the circuit noise data group.

[0060] S103, determine the attenuation value of the optical fiber under test based on the first data group and the second data group.

[0061] In this embodiment, after determining the average values ​​of the first data group and the second data group respectively, the attenuation value is determined based on the average value of the first data group, the average value of the second data group, and the preset calibration value.

[0062] By applying the above technical solution, a fiber optic line attenuation measurement method is provided. This method is applied to a system including the fiber under test, a light reflector, and a fiber optic line attenuation measurement device. The device transmits optical measurement pulse signals to the fiber under test. A first data set corresponding to the original optical measurement pulse signal is obtained from the measurement data collected by the device, and a second data set corresponding to a comparison optical measurement pulse signal is obtained from the same data set. The attenuation value of the fiber under test is then determined based on the first and second data sets. This method improves the speed of fiber optic line attenuation measurement while reducing the need for active equipment placement, significantly reducing system costs and measurement workload.

[0063] To achieve the above objectives, the present invention also proposes an optical fiber line attenuation measurement device, applicable to a system comprising the optical fiber under test, a light reflector, and the optical fiber line attenuation measurement device, such as... Figure 6As shown, the light reflector is connected to one end of the optical fiber under test, and the optical fiber line attenuation measuring device is connected to the other end of the optical fiber under test. The optical fiber line attenuation measuring device includes:

[0064] An optical transmitter 610 is connected to an optical splitter module and is used to transmit optical measurement pulse signals to the optical fiber under test through the optical splitter module.

[0065] The optical splitter module 620 is connected to the optical fiber under test and the signal conversion module respectively, and is used to split the optical measurement pulse signal into the original optical measurement pulse signal that has not passed through the optical fiber under test and the comparison optical measurement pulse signal that has passed through the optical fiber under test and is reflected by the optical reflector.

[0066] The signal conversion module 630 is connected to the optical splitter module and is used to acquire a first data group corresponding to the original optical measurement pulse signal, and to acquire a second data group corresponding to the comparison optical measurement pulse signal from the measurement data collected from the optical fiber line attenuation measurement device. The first data group is acquired based on the number of optical measurement pulse signals, and the second data group is acquired based on the circuit noise parameters in the measurement data.

[0067] The control and calculation module 640 is used to determine the attenuation value of the optical fiber under test based on the first data group and the second data group.

[0068] In this embodiment, the optical splitting module specifically includes a first optical splitter and a second optical splitter, wherein:

[0069] The first optical splitter is connected to the optical transmitter and the optical fiber under test, and is used to split the optical measurement pulse signal into a signal directed to the optical fiber under test and a signal directed to the second optical splitter.

[0070] The second optical splitter is connected to the first optical splitter and the signal conversion module, respectively, and is used to send the contrast light measurement pulse signal after passing through the optical fiber under test and being reflected by the light reflector and the original light measurement pulse signal that has not passed through the optical fiber under test to the signal conversion module.

[0071] In this embodiment, the signal conversion module specifically includes a transimpedance amplifier and an analog-to-digital converter circuit, wherein:

[0072] The transimpedance amplifier is connected to the second optical splitter and the analog-to-digital converter circuit respectively, and is used to receive the pulse signal transmitted by the second optical splitter and output the pulse signal to the analog-to-digital converter circuit.

[0073] The analog-to-digital converter circuit is connected to the transimpedance amplifier and the control and calculation module, respectively, and is used to sample and digitally convert the signal output by the transimpedance amplifier before sending it to the control and calculation module.

[0074] To further illustrate the technical concept of this invention, the technical solution is described below in conjunction with a specific application scenario. The purpose of this specific embodiment is to provide a method for measuring fiber optic line attenuation, which improves the speed of fiber optic line attenuation measurement while reducing the need for active equipment placement, thus significantly reducing system cost and measurement workload. In the following specific embodiment, only one optical reflector needs to be connected to the end of the fiber under test. The fiber optic line attenuation measuring device of this invention is used at the beginning of the fiber under test. By measuring the optical signal level generated by the optical reflector, the total attenuation value of the fiber optic link is calculated.

[0075] like Figure 2 The diagram shows the structural composition of the fiber optic line attenuation measurement device of the present invention:

[0076] An optical fiber line attenuation measurement device includes an optical transmitter, a 2x2 optical splitter, a 1x2 optical splitter, an optical reflector, a PIN transimpedance amplifier (i.e., PIN-TIA), a 10-bit analog-to-digital converter (i.e., ADC), and a calculation and control unit.

[0077] The computing and control unit is connected to the optical transmitter and the analog-to-digital converter circuit. The optical transmitter is connected to one end of the optical fiber under test through a 2x2 optical splitter. The other end of the optical fiber under test is connected to the optical reflector. The 2x2 optical splitter is connected to a 1x2 optical splitter. The 1x2 optical splitter is connected to a PIN transimpedance amplifier. The PIN transimpedance amplifier is connected to the analog-to-digital converter circuit.

[0078] The 2x2 optical splitter has a 50:50 uniform splitting ratio; the 1x2 optical splitter has a 1:99 splitting ratio; the analog-to-digital converter uses a 10-bit 50MSPS converter, typically the ADC10065 from Texas Instruments; the optical transmitter uses an FP-type LD with an output pulse peak-to-peak power range of -3dBm to 5dBm, typically 0dBm; the optical reflector uses a coated type with a reflectivity range of 0dBm to -3dBm; the PIN transimpedance amplifier is composed of an operational amplifier with unity-gain bandwidth greater than 500MHz; and the photodetector uses a PIN photodetector.

[0079] The optical measurement pulse signal emitted by the optical transmitter has a width ranging from 100ns to 1000ns; the pulse signal interval ranges from 1ms to 2ms.

[0080] Among them, a portion of the signal output from the optical transmitter, after passing through a 2x2 optical splitter and a 1x2 optical splitter, directly reaches the PIN transimpedance amplifier without passing through the optical fiber under test.

[0081] A portion of the signal output from the optical transmitter passes through a 2x2 optical splitter, the optical fiber under test, the optical reflector, the optical fiber under test, another 2x2 optical splitter, and a 1x2 optical splitter before reaching the PIN transimpedance amplifier.

[0082] The data obtained after the output signal of the PIN transimpedance amplifier is sampled by the ADC is as follows: Figure 3 , Figure 4 As shown, where Figure 4 It is Figure 3 The display after magnification along the vertical axis.

[0083] Among them, the pulse signal [A] 1-1 [A] is a pulse signal generated by a portion of the signal output from the optical transmitter passing through a 2x2 optical splitter and a 1x2 optical splitter, bypassing the fiber under test and directly reaching the PIN transimpedance amplifier; 1-2 The signal is generated by a portion of the signal output from the optical transmitter, which passes through a 2x2 optical splitter, the optical fiber under test, the optical reflector, the optical fiber under test, another 2x2 optical splitter, and a 1x2 optical splitter before reaching the PIN transimpedance amplifier.

[0084] like Figure 5 As shown in the figure, a specific embodiment of the present invention also provides a method for measuring optical fiber line attenuation. The measurement method is applied to a measuring device and includes the following steps:

[0085] a) Connect the fiber optic line attenuation measuring device to the fiber optic cable being tested:

[0086] Connect the measurement signal port of the fiber optic line attenuation measuring device to one end of the fiber optic cable under test, and connect the other end of the fiber optic cable under test to the optical reflector.

[0087] b) Obtain measurement data [B] i ]:

[0088] The calculation and control unit controls the optical transmitter to emit N optical measurement pulse signals; for each optical measurement pulse signal emitted, the analog-to-digital converter (ADC) synchronously performs analog-to-digital conversion, sampling and digitally converting the output signal of the PIN transimpedance amplifier before sending it to the calculation and control unit; after obtaining N sets of data, the calculation and control unit performs cumulative calculation to obtain a set of measurement data [B]. i ]; where: the width of the optical measurement pulse signal ranges from 100ns to 1000ns; the pulse signal interval ranges from 1ms to 2ms; N ranges from 10 to 1000, with a typical value of 100;

[0089] c) Transfer the data [B] iPerform a zeroing operation:

[0090] In data [B] i The document contains at least two parts of signal data [B1] and [B2], where: data [B1]

[0091] Data [B2] contains fiber optic scattering and light reflection signals, but contains no optical signals at all, only circuit noise; with the average value of data [B2] as the baseline of 0, the data [B... i Perform a zeroing operation to obtain the data [A] i ];

[0092] d) From data [A i The signal output from the optical transmitter is found to be partially transmitted through a 2x2 optical splitter and a 1x2 optical splitter, and then reaches the pulse signal generated by the PIN transimpedance amplifier. [A] 1-1 ]:

[0093] Data [A] i [Contains data [A]] 1-1 After passing through a 2x2 optical splitter and a 1x2 optical splitter, a portion of the signal output from the optical transmitter reaches the pulse signal generated by the PIN transimpedance amplifier. [A] 1-1 ];

[0094] From data [A] i Find the data in [A] 1-1 ]: In data [A i In the dataset [A], find the first consecutive set of numbers greater than 50N. These consecutive sets of numbers form the data [A]. 1-1 ];

[0095] e) From data [A] i The signal output from the optical transmitter is found to pass through a 2x2 optical splitter and the fiber under test. After being reflected by the optical reflector, it passes through a 1x2 optical splitter and reaches the pulse signal generated by the PIN transimpedance amplifier. [A] 1-2 ]:

[0096] Data [A] i [Contains data [A]] 1-2 The signal output from the optical transmitter passes through a 2x2 optical splitter and the fiber under test. After being reflected by the optical reflector, it passes through a 1x2 optical splitter and reaches the pulse signal generated by the PIN transimpedance amplifier. [A] 1-2 ];

[0097] From data [A] i Find the data in [A] 1-2 ]: In data [A i In the data [A], we find the last consecutive set of numbers with values ​​greater than 100δ. These consecutive sets of numbers constitute the data. 1-2], δ is the root mean square of the circuit noise, which is the root mean square of the data [B2];

[0098] f) Calculate data [A] 1-1 The average value a 1-1 and data [A 1-2 The average value a 1-2 ;

[0099] Calculate the fiber optic line attenuation value α: α = 5 x lg(a) 1-1 / a 1-2 )+α0, where α0 is the calibration value.

[0100] By applying the above technical solution, a fiber optic line attenuation measurement method is provided. This method is applied to a system including the fiber under test, a light reflector, and a fiber optic line attenuation measurement device. The device transmits optical measurement pulse signals to the fiber under test. A first data set corresponding to the original optical measurement pulse signal is obtained from the measurement data collected by the device, and a second data set corresponding to a comparison optical measurement pulse signal is obtained from the same data set. The attenuation value of the fiber under test is then determined based on the first and second data sets. This method improves the speed of fiber optic line attenuation measurement while reducing the need for active equipment placement, significantly reducing system costs and measurement workload.

[0101] Accordingly, the present invention also proposes an electronic device, comprising:

[0102] Processor; and

[0103] Memory for storing the executable instructions of the processor;

[0104] The processor is configured to perform an optical fiber line attenuation measurement method as described above by executing the executable instructions.

[0105] Accordingly, the present invention also proposes a computer-readable storage medium storing a computer program thereon, characterized in that the computer program, when executed by a processor, implements an optical fiber line attenuation measurement method as described above.

[0106] By applying the above technical solution, a fiber optic line attenuation measurement method is provided. This method is applied to a system including the fiber under test, a light reflector, and a fiber optic line attenuation measurement device. The device transmits optical measurement pulse signals to the fiber under test. A first data set corresponding to the original optical measurement pulse signal is obtained from the measurement data collected by the device, and a second data set corresponding to a comparison optical measurement pulse signal is obtained from the same data set. The attenuation value of the fiber under test is then determined based on the first and second data sets. This method improves the speed of fiber optic line attenuation measurement while reducing the need for active equipment placement, significantly reducing system costs and measurement workload.

[0107] The aforementioned communication bus can be a PCI (Peripheral Component Interconnect) bus or an EISA (Extended Industry Standard Architecture) bus, etc. This communication bus can be divided into address bus, data bus, control bus, etc. For ease of illustration, only one thick line is used to represent it in the diagram, but this does not indicate that there is only one bus or one type of bus.

[0108] The communication interface is used for communication between the aforementioned terminal and other devices.

[0109] The memory may include RAM (Random Access Memory) or non-volatile memory, such as at least one disk storage device. Optionally, the memory may also be at least one storage device located remotely from the aforementioned processor.

[0110] The processors mentioned above can be general-purpose processors, including CPUs (Central Processing Units), NPs (Network Processors), etc.; they can also be DSPs (Digital Signal Processors), ASICs (Application Specific Integrated Circuits), FPGAs (Field-Programmable Gate Arrays), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components.

[0111] In the above embodiments, implementation can be achieved entirely or partially through software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented entirely or partially in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present invention are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that integrates one or more available media. The available medium can be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid-state drive), etc.

[0112] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0113] The various embodiments in this specification are described in a related manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0114] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention are included within the scope of protection of the present invention.

Claims

1. A method for measuring fiber optic line attenuation, applied in a system comprising the fiber under test, a light reflector, and a fiber optic line attenuation measuring device, characterized in that, The optical reflector is connected to one end of the optical fiber under test, and the optical fiber line attenuation measuring device is connected to the other end of the optical fiber under test. The method includes: The optical fiber line attenuation measuring device transmits an optical measurement pulse signal to the optical fiber under test. The optical measurement pulse signal is divided by the optical fiber line attenuation measuring device into an original optical measurement pulse signal that has not passed through the optical fiber under test and a comparison optical measurement pulse signal that has passed through the optical fiber under test and is reflected by the optical reflector. A first data group corresponding to the original optical measurement pulse signal is obtained from the measurement data collected by the optical fiber line attenuation measurement device, and a second data group corresponding to the comparison optical measurement pulse signal is obtained from the measurement data collected by the optical fiber line attenuation measurement device. The first data group is obtained based on the number of optical measurement pulse signals, and the second data group is obtained based on the circuit noise parameters in the measurement data. The attenuation value of the optical fiber under test is determined based on the first data set and the second data set; Before obtaining the first data group corresponding to the original optical measurement pulse signal from the measurement data collected by the optical fiber line attenuation measuring device, and before obtaining the second data group corresponding to the comparison optical measurement pulse signal from the measurement data collected by the optical fiber line attenuation measuring device, the method further includes: The signal received by the optical fiber line attenuation measuring device is converted into a data set. Extract signal data sets and circuit noise data sets from the data; The signal data group is processed according to the circuit noise group to obtain the measurement data; The first data group corresponding to the original optical measurement pulse signal is obtained from the measurement data collected by the optical fiber line attenuation measurement device, specifically as follows: The first data group consists of consecutive numbers in the measurement data whose values ​​are greater than a first threshold, where the first threshold is a specified multiple of the number of optical measurement pulse signals. The second data group corresponding to the comparison light measurement pulse signal is obtained from the measurement data collected by the optical fiber line attenuation measurement device, specifically as follows: The last group of consecutive numbers in the measurement data whose values ​​are greater than the second threshold is taken as the second data group, and the second threshold is a specified multiple of the root mean square of the circuit noise data group; The attenuation value of the tested optical fiber is determined based on the first data set and the second data set, specifically as follows: Determine the average values ​​of the first data set and the second data set respectively; The attenuation value is determined based on the average value of the first data set, the average value of the second data set, and a preset calibration value.

2. An optical fiber line attenuation measuring device, applied in a system comprising an optical fiber under test, a light reflector, and the optical fiber line attenuation measuring device, characterized in that, For implementing the method of claim 1, the optical reflector is connected to one end of the optical fiber under test, and the optical fiber line attenuation measuring device is connected to the other end of the optical fiber under test. The optical fiber line attenuation measuring device comprises: An optical transmitter, connected to an optical splitter module, is used to transmit optical measurement pulse signals to the optical fiber under test through the optical splitter module; The optical splitter module is connected to the optical fiber under test and the signal conversion module, respectively, and is used to split the optical measurement pulse signal into the original optical measurement pulse signal that has not passed through the optical fiber under test and the comparison optical measurement pulse signal that has passed through the optical fiber under test and is reflected by the optical reflector. The signal conversion module is connected to the optical splitter module and is used to acquire a first data group corresponding to the original optical measurement pulse signal, and to acquire a second data group corresponding to the comparison optical measurement pulse signal from the measurement data collected from the optical fiber line attenuation measurement device. The first data group is acquired based on the number of optical measurement pulse signals, and the second data group is acquired based on the circuit noise parameters in the measurement data. A control and calculation module is used to determine the attenuation value of the optical fiber under test based on the first data set and the second data set.

3. The apparatus as described in claim 2, characterized in that, The optical splitting module specifically includes a first optical splitter and a second optical splitter, wherein: The first optical splitter is connected to the optical transmitter and the optical fiber under test, and is used to split the optical measurement pulse signal into a signal directed to the optical fiber under test and a signal directed to the second optical splitter. The second optical splitter is connected to the first optical splitter and the signal conversion module, respectively, and is used to send the contrast light measurement pulse signal after passing through the optical fiber under test and being reflected by the light reflector and the original light measurement pulse signal that has not passed through the optical fiber under test to the signal conversion module.

4. The apparatus as described in claim 3, characterized in that, The signal conversion module specifically includes a transimpedance amplifier and an analog-to-digital converter circuit, wherein: The transimpedance amplifier is connected to the second optical splitter and the analog-to-digital converter circuit respectively, and is used to receive the pulse signal transmitted by the second optical splitter and output the pulse signal to the analog-to-digital converter circuit. The analog-to-digital converter circuit is connected to the transimpedance amplifier and the control and calculation module, respectively, and is used to sample and digitally convert the signal output by the transimpedance amplifier before sending it to the control and calculation module.

5. An electronic device, characterized in that, include: processor; as well as Memory for storing the executable instructions of the processor; The processor is configured to execute the fiber optic line attenuation measurement method of claim 1 by executing the executable instructions.

6. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the optical fiber line attenuation measurement method of claim 1.

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