Optical Fiber Connector Reflection Loss Measurement System and Method

Abstract

The present invention discloses a fiber optic connector reflection loss measurement system and method, which relates to the technical field of fiber optic connectors. It includes adjusting the control parameters of a laser source, constructing a fluctuation experiment data set, and calculating the light source correction coefficient of the laser source at this time; detecting the total scattered intensity of the front and rear end faces and the front and rear reflection losses of different fiber optic connectors before and after cleaning, constructing an end face cleaning experiment data set, extracting 10 front end face total scattered intensity data closest to the measured total scattered intensity of the end face from the end face cleaning experiment data set, and calculating the end face cleaning correction coefficient of this fiber optic connector; calculating the rough reflection loss of the fiber optic connector based on the first output power and the second output power, and combining the end face cleaning correction coefficient and the light source correction coefficient to calculate the precise reflection loss of the fiber optic connector. It significantly improves the accuracy of the measurement results without increasing the workload.

Description

Technical Field

[0001] The present invention relates to the technical field of optical fiber connectors, and in particular to an optical fiber connector reflection loss measurement system and method thereof. Background Art

[0002] With the rapid development of optical fiber communication technology, as a key device for detachable connection between optical fibers, the performance of an optical fiber connector has an important impact on the reliability and various performances of an optical transmission system. The basic requirement of an optical fiber connector is to precisely butt the two end faces of the optical fiber to maximize the coupling of the optical energy output by the transmitting optical fiber into the receiving optical fiber and minimize the impact on the system due to the connector being inserted into the optical link. Therefore, accurately measuring and evaluating the reflection loss of an optical fiber connector has become an important link in ensuring the performance of an optical fiber communication system. The reflection loss of an optical fiber connector refers to the power loss generated when part of the optical signal is reflected back to the source end due to reasons such as unevenness, contamination or refractive index mismatch of the connector end face when the optical signal passes through the connector. The magnitude of the reflection loss directly affects the transmission quality of the optical signal and the stability of the system. In the prior art, there are various methods for measuring the reflection loss of an optical fiber connector, but there is generally a contradiction between measurement accuracy and cost. Simple measurement equipment is inexpensive, but its measurement accuracy often cannot meet the requirements of high-precision applications; while high-precision measurement equipment has high accuracy, but its cost also increases accordingly, which is not conducive to large-scale popularization and application.

[0003] In the Chinese invention application with the application publication number CN105978621A, an optical fiber connector reflection loss measurement system is disclosed, including a first measurement unit for measuring the insertion loss of an optical splitter; a second measurement unit for measuring the loss at the fiber pigtail point; a third measurement unit for measuring the loss at the fiber fusion point; a fourth measurement unit for measuring the optical fiber attenuation; and a calculation unit for calculating the reflection loss of the optical fiber connector, achieving the technical effect of relatively high measurement accuracy and relatively low system cost for the optical fiber connector reflection loss measurement system.

[0004] In the above invention application, by separately measuring the insertion loss of the optical fiber connector, the loss at the fiber pigtail point, the loss at the fiber fusion point and the optical fiber attenuation, although the accuracy of measuring the reflection loss is improved, the workload of measuring the reflection loss is also greatly increased, increasing the complexity and time cost of the measurement, and in order to achieve high-precision measurement, it may be necessary to use a variety of high-precision measurement devices and instruments. The purchase and maintenance costs of these devices are usually high, increasing the overall cost of the system.

[0005] Therefore, the present invention provides an optical fiber connector reflection loss measurement system and method thereof. Summary of the Invention

[0006] (1) Technical problem to be solved

[0007] In view of the deficiencies of the prior art, the present invention provides an optical fiber connector reflection loss measurement system and method. By adjusting the control parameters of the laser source, a fluctuation experiment data set is constructed, and the light source calibration coefficient Gj of the laser source is calculated a , the total scattered intensity and the front and back reflection losses of the end faces of different optical fiber connectors before and after cleaning are detected, an end face cleaning experiment data set is constructed, and the end face cleaning calibration coefficient Dqj of this optical fiber connector is calculated, which can avoid the influence of the contamination on the surface of the optical fiber connector on the accuracy of the measurement results, so that the end face of the optical fiber connector does not need to be cleaned before each measurement, reducing the cleaning requirement for the connector end face before each measurement, improving the overall work efficiency and measurement accuracy. And according to the first output power Ed and the second output power Es, the rough reflection loss Fsc of the optical fiber connector is calculated. Combining the end face cleaning calibration coefficient Dqj and the light source calibration coefficient, the precise reflection loss Jfs of the optical fiber connector is calculated, which can significantly improve the accuracy of the measurement results. And in the subsequent measurement of the reflection loss of the optical fiber splitter, since the amount of data in the calibration data set is large enough, it is no longer necessary to analyze the calibration coefficient each time. After measuring according to the conventional measurement method, only calculation is needed, which significantly improves the accuracy of the measurement results without increasing the workload, thus solving the technical problems recorded in the background art.

[0008] (2) Technical solution

[0009] To achieve the above object, the present invention is realized through the following technical solutions: An optical fiber connector reflection loss measurement method, including the following steps:

[0010] Adjust the control parameters of the laser source, construct a fluctuation experiment data set, and detect the output of the laser source used this time to obtain the measurement fluctuation depth Cb, and extract the input fluctuation depth Bs closest to the measurement fluctuation depth Cb from the fluctuation experiment data set a and its corresponding reflection loss Bh a , and calculate the light source calibration coefficient Gj of the laser source this time a ;

[0011] Detect the total scattered intensity and the front and back reflection losses of the end faces of different optical fiber connectors before and after cleaning, construct an end face cleaning experiment data set, and extract 10 front end face scattered intensity Qs data closest to the measured total end face scattered intensity Cs from the end face cleaning experiment data set j , and calculate the end face cleaning calibration coefficient Dqj of this optical fiber connector;

[0012] Calculate the gross reflection loss Fsc of the fiber optic connector based on the first output power Ed and the second output power Es, and combine the end face cleaning correction factor Dqj and the light source correction factor Gj a , and calculate the precise reflection loss Jfs of the fiber optic connector.

[0013] Furthermore, adjust the control parameters of the laser source, introduce light source fluctuations of different degrees under the same power, continuously monitor the input and output of the fiber optic connector using a high-precision optical power meter, and obtain the input fluctuation depth Bs i and the reflection loss Bh under each light source fluctuation condition i , and construct a fluctuation experiment data set.

[0014] Furthermore, continuously monitor the output of the laser source used this time using a high-precision optical power meter, obtain the measured fluctuation depth Cb, and extract the input fluctuation depth Bs closest to the measured fluctuation depth Cb from the fluctuation experiment data set a and its corresponding reflection loss Bh a , and calculate the light source correction factor Gj of this laser source a :

[0015]

[0016] where i represents the sequence number of each light source fluctuation condition, i = 1, 2,..., m, and the smaller the number, the smaller the light source fluctuation, and a represents the number of the input fluctuation depth closest to the measured fluctuation depth Cb in the fluctuation experiment data set.

[0017] Furthermore, use a light scattering detection device to irradiate the front and back end faces of the fiber optic connector before and after cleaning with an optical signal and measure the total intensity of the scattered light, denoted as the total front face scattered intensity Qs j and the total back face scattered intensity Hs j , and continuously monitor the output of the fiber optic connector using a high-precision optical power meter to obtain the total front face scattered intensity Qs j and the total back face scattered intensity Hs j and the front reflection loss Qh j and the back reflection loss Hh j of the fiber optic connector corresponding thereto, and construct an end face cleaning experiment data set; where j represents the sequence number of different total front face scattered intensities, j = 1, 2,..., n, and the smaller the number, the smaller the value of the total front face scattered intensity.

[0018] Furthermore, use a light scattering detection device to detect the fiber optic connector for which the reflection loss is measured, obtain the measured total end face scattered intensity Cs, and extract 10 total front face scattered intensities Qs closest to the measured total end face scattered intensity Cs from the end face cleaning experiment data set jData, and the total back-end surface scattering intensity Hs corresponding thereto j , front reflection loss Qh j and back reflection loss Hh j , which are re-numbered and denoted as the to-be-determined total front-end surface scattering intensity DQs k , to-be-determined total back-end surface scattering intensity DHs k , to-be-determined front reflection loss DQh k and to-be-determined back reflection loss DHh k .

[0019] Furthermore, obtain the to-be-determined total front-end surface scattering intensity DQs k , to-be-determined total back-end surface scattering intensity DHs k , to-be-determined front reflection loss DQh k and to-be-determined back reflection loss DHh k , and calculate the front and back end surface scattering intensity difference Sc k , reflection loss difference Fc k and front and back difference index Yc:

[0020]

[0021] where k represents the sequential number of the to-be-determined total front-end surface scattering intensity DQs k , k = 1, 2,..., 10.

[0022] Furthermore, obtain the front and back end surface reflection loss difference Fc k and front and back difference index Yc, and calculate the end face cleaning correction coefficient Dqj of this fiber optic connector:

[0023]

[0024] The calculation formula of the end face cleaning correction coefficient Dqj corresponding to this fiber optic connector is as above.

[0025] Furthermore, without connecting the fiber optic connector to be measured, use an optical power meter to measure and obtain the first output power Ed at the output end. After connecting the fiber optic connector to be measured, use an optical power meter to measure and obtain the second output power Es at the output end, and calculate the gross reflection loss Fsc of the fiber optic connector:

[0026]

[0027] where P 标 is the output power of the standard optical fiber.

[0028] Furthermore, obtain the gross reflection loss Fsc, end face cleaning correction coefficient Dqj and light source correction coefficient Gj of the fiber optic connector a , and calculate the precise reflection loss Jfs of the fiber optic connector:

[0029] Jfs = Fsc(1 + Dqj + Gj a )

[0030] The formula for calculating the precise reflection loss Jfs of the corresponding optical fiber connector is as above.

[0031] An optical fiber connector reflection loss measurement system and method thereof, comprising:

[0032] A light source calibration module that adjusts the control parameters of the laser source, constructs a fluctuation experiment data set, detects the output of the laser source used this time to obtain the measured fluctuation depth Cb, and extracts the input fluctuation depth Bs closest to the measured fluctuation depth Cb from the fluctuation experiment data set a and its corresponding reflection loss Bh a , and calculates the light source calibration coefficient Gj of this laser source a ;

[0033] A port cleaning calibration module that detects the total end face scattering intensity and the front and rear reflection losses before and after cleaning different optical fiber connectors, constructs an end face cleaning experiment data set, and extracts 10 front end face scattering total intensities Qs closest to the measured end face scattering total intensity Cs from the end face cleaning experiment data set j data, and calculates the end face cleaning calibration coefficient Dqj of this optical fiber connector;

[0034] A precise reflection loss calculation module that calculates the rough reflection loss Fsc of the optical fiber connector based on the first output power Ed and the second output power Es, and combines the end face cleaning calibration coefficient Dqj and the light source calibration coefficient Gj a , and calculates the precise reflection loss Jfs of the optical fiber connector.

[0035] (III) Beneficial effects

[0036] The present invention provides an optical fiber connector reflection loss measurement system and method thereof, having the following beneficial effects:

[0037] 1. Adjust the control parameters of the laser source, construct a fluctuation experiment data set, detect the output of the laser source used this time to obtain the measured fluctuation depth Cb, and extract the input fluctuation depth Bs closest to the measured fluctuation depth Cb from the fluctuation experiment data set a and its corresponding reflection loss Bh a , and calculate the light source calibration coefficient Gj of this laser source a , which can precisely control the reflection loss of the optical fiber connector, help improve product performance and market competitiveness, and provide a basis for continuously optimizing product design and production processes, reducing reflection loss and improving signal transmission quality.

[0038] 2. Detect the total end-face scattering intensity and the front and rear reflection losses of different fiber optic connectors before and after cleaning the end faces, construct an end-face cleaning experimental data set, and extract 10 front-end face scattering total intensities Qs from the end-face cleaning experimental data set that are closest to the measured total end-face scattering intensity Cs j Data, calculate the end-face cleaning correction coefficient Dqj of this fiber optic connector, which can avoid the influence of the surface contamination of the fiber optic connector on the accuracy of the measurement results, so that the fiber optic connector does not need to clean the end face before each measurement, reduce the cleaning requirement for the connector end face before each measurement, and improve the overall work efficiency and measurement accuracy.

[0039] 3. Calculate the rough reflection loss Fsc of the fiber optic connector based on the first output power Ed and the second output power Es, and combine the end-face cleaning correction coefficient Dqj and the light source correction coefficient Gj a to calculate the accurate reflection loss Jfs of the fiber optic connector, which can significantly improve the accuracy of the measurement results, make the evaluation of the performance of the fiber optic connector more accurate and reliable, and more accurately judge the performance status of the fiber optic connector. Brief Description of the Drawings

[0040] Figure 1 is a schematic flow chart of the method for measuring the reflection loss of the fiber optic connector of the present invention;

[0041] Figure 2 is a schematic structural diagram of the system for measuring the reflection loss of the fiber optic connector of the present invention. Detailed Embodiments

[0042] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative work shall fall within the protection scope of the present invention.

[0043] Please refer to Figure 1 , the present invention provides a method for measuring the reflection loss of a fiber optic connector, including the following steps:

[0044] Step 1. Adjust the control parameters of the laser source, construct a fluctuation experimental data set, and detect the output of the laser source used this time to obtain the measured fluctuation depth Cb. Extract the input fluctuation depth Bs from the fluctuation experimental data set that is closest to the measured fluctuation depth Cb a and its corresponding reflection loss Bh a , and calculate the light source correction coefficient Gj of the laser source this time a .

[0045] The content of the first step includes the following:

[0046] Step 101: Adjust the control parameters of the laser source to introduce light source fluctuations of different degrees at the same power. Continuously monitor the input and output of the fiber optic connector using a high-precision optical power meter to obtain the input fluctuation depth Bs i and the reflection loss Bh under each light source fluctuation condition i , and construct a fluctuation experiment data set. The input fluctuation depth is the ratio of the amplitude of the input optical power fluctuation of the fiber optic connector to the average optical power

[0047] Step 102: Continuously monitor the output of the laser source used this time using a high-precision optical power meter to obtain the measured fluctuation depth Cb. Extract the input fluctuation depth Bs closest to the measured fluctuation depth Cb from the fluctuation experiment data set a and its corresponding reflection loss Bh a , and calculate the light source correction coefficient Gj of this laser source a :

[0048]

[0049] where i represents the sequence number of each light source fluctuation condition, i = 1, 2,..., m, and the smaller the number, the smaller the light source fluctuation, and a represents the number of the input fluctuation depth closest to the measured fluctuation depth Cb in the fluctuation experiment data set

[0050] When in use, combine the content in Steps 101 and 102:

[0051] Adjust the control parameters of the laser source, construct a fluctuation experiment data set, and detect the output of the laser source used this time to obtain the measured fluctuation depth Cb. Extract the input fluctuation depth Bs closest to the measured fluctuation depth Cb from the fluctuation experiment data set a and its corresponding reflection loss Bh a , and calculate the light source correction coefficient Gj of this laser source a , which can accurately control the reflection loss of the fiber optic connector, help improve product performance and market competitiveness, and provide a basis for continuously optimizing product design and production processes, reducing reflection loss and improving signal transmission quality

[0052] Step Two: Detect the total end-face scattering intensity and front and back reflection losses before and after cleaning different fiber optic connectors, construct an end-face cleaning experiment data set, and extract 10 front-end face scattering intensities Qs closest to the measured end-face scattering total intensity Cs from the end-face cleaning experiment data set j data, and calculate the end-face cleaning correction coefficient Dqj of this fiber optic connector

[0053] The said Step Two includes the following content:

[0054] Step 201: Use a light scattering detection device to irradiate the front and rear end faces of the fiber optic connector before and after cleaning with light signals, and measure the total intensity of the scattered light, denoted as the total front end face scattered intensity Qs j and the total rear end face scattered intensity Hs j , and continuously monitor the output of the fiber optic connector using a high-precision optical power meter to obtain the total front end face scattered intensity Qs j and the total rear end face scattered intensity Hs j corresponding to the front reflection loss Qh j and the rear reflection loss Hh j of the fiber optic connector, and construct an end face cleaning experimental data set. Among them, j represents the sequential number of different total front end face scattered intensities, j = 1, 2,..., n, and the smaller the number, the smaller the value of the total front end face scattered intensity.

[0055] Step 202: Use a light scattering detection device to detect the fiber optic connector for reflection loss measurement, obtain the measured total end face scattered intensity Cs, and extract the 10 total front end face scattered intensities Qs j closest to the measured total end face scattered intensity Cs from the end face cleaning experimental data set, j as well as their corresponding total rear end face scattered intensities Hs j , front reflection losses Qh j and rear reflection losses Hh k . After renumbering, they are denoted as the undetermined total front end face scattered intensity DQs k , undetermined total rear end face scattered intensity DHs k , undetermined front reflection loss DQh k .

[0056] Step 203: Obtain the undetermined total front end face scattered intensity DQs k , undetermined total rear end face scattered intensity DHs k , undetermined front reflection loss DQh k and undetermined rear reflection loss DHh k , and calculate the front and rear end face scattered intensity difference Sc k , reflection loss difference Fc k and front and rear difference index Yc:

[0057]

[0058] Among them, k represents the sequential number of the undetermined total front end face scattered intensity DQs k , k = 1, 2,..., 10.

[0059] Step 204: Obtain the front and rear end face reflection loss difference Fc kAnd the front and rear difference index Yc, calculate the end face cleaning correction coefficient Dqj of this fiber optic connector:

[0060]

[0061] The calculation formula of the end face cleaning correction coefficient Dqj of the corresponding fiber optic connector is as above.

[0062] During use, combine the content in steps 201 to 204:

[0063] Detect the total end face scattering intensity and front and rear reflection losses before and after cleaning different fiber optic connectors, construct an end face cleaning experimental data set, and extract 10 front end face scattering total intensities Qs closest to the measured end face scattering total intensity Cs from the end face cleaning experimental data set j Data, calculating the end face cleaning correction coefficient Dqj of this fiber optic connector can avoid the influence of the contamination on the surface of the fiber optic connector on the accuracy of the measurement result, so that it is not necessary to clean the end face of the fiber optic connector before each measurement, reduce the cleaning requirement for the connector end face before each measurement, and improve the overall work efficiency and measurement accuracy.

[0064] Step 3: Calculate the rough reflection loss Fsc of the fiber optic connector based on the first output power Ed and the second output power Es, and combine the end face cleaning correction coefficient Dqj and the light source correction coefficient Gj a to calculate the precise reflection loss Jfs of the fiber optic connector.

[0065] The said step 3 includes the following content:

[0066] Step 301: Without connecting the fiber optic connector to be measured, use an optical power meter to measure and obtain the first output power Ed at the output end. After connecting the fiber optic connector to be measured, use an optical power meter to measure and obtain the second output power Es at the output end, and calculate the rough reflection loss Fsc of the fiber optic connector:

[0067]

[0068] where P 标 is the output power of the standard optical fiber.

[0069] Step 302: Obtain the rough reflection loss Fsc, end face cleaning correction coefficient Dqj and light source correction coefficient Gj of the fiber optic connector a to calculate the precise reflection loss Jfs of the fiber optic connector:

[0070] Jfs = Fsc(1 + Dqj + Gj a )

[0071] The calculation formula of the precise reflection loss Jfs of the corresponding fiber optic connector is as above.

[0072] Step 303: Organize and construct an accurate data set with all the light source correction coefficients Gj a and the total scattering intensity Cs of the measurement end face of the fiber optic connector and the end face cleaning correction coefficient Dqj, so that for the fiber optic connectors that need to measure the reflection loss later, only the rough reflection loss needs to be measured and calculated, and the data in the accurate data set can be used for light source correction and end face cleaning correction, and the accurate reflection loss can be directly calculated.

[0073] It should be noted that the light source correction coefficient Gj under the same working conditions of the same laser source a can be directly used without further detection and analysis. For the fiber optic connectors to be tested with the same model and the same total scattering intensity Cs of the measurement end face under the same test environment, the end face cleaning correction coefficient Dqj can also be directly used without further detection and analysis.

[0074] When in use, combine the content in Steps 301 to 303:

[0075] Calculate the rough reflection loss Fsc of the fiber optic connector based on the first output power Ed and the second output power Es, and combine the end face cleaning correction coefficient Dqj and the light source correction coefficient Gj a , calculate the accurate reflection loss Jfs of the fiber optic connector, which can significantly improve the accuracy of the measurement results, make the evaluation of the performance of the fiber optic connector more accurate and reliable, and more accurately judge the performance status of the fiber optic connector.

[0076] Please refer to Figure 2 , the present invention provides a fiber optic connector reflection loss measurement system, including:

[0077] A light source correction module that adjusts the control parameters of the laser source, constructs a fluctuation experiment data set, detects the output of the laser source used this time to obtain the measurement fluctuation depth Cb, and extracts the input fluctuation depth Bs closest to the measurement fluctuation depth Cb from the fluctuation experiment data set a and its corresponding reflection loss Bh a , and calculate the light source correction coefficient Gj of this laser source a ;

[0078] A port cleaning correction module that detects the total scattering intensity of the end face and the front and back reflection losses of different fiber optic connectors before and after cleaning, constructs an end face cleaning experiment data set, and extracts 10 front end face scattering intensities Qs closest to the total scattering intensity Cs of the measurement end face from the end face cleaning experiment data set j data, and calculate the end face cleaning correction coefficient Dqj of this fiber optic connector;

[0079] An accurate reflection loss calculation module calculates the gross reflection loss Fsc of an optical fiber connector based on the first output power Ed and the second output power Es, and combines the end face cleaning correction coefficient Dqj and the light source correction coefficient Gj a , and calculates the accurate reflection loss Jfs of the optical fiber connector.

[0080] The above embodiments can be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using software, the above embodiments can be implemented in whole or in part in the form of a computer program product. Those of ordinary skill in the art will appreciate that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or in a combination of computer software and electronic hardware. Whether these functions are executed in hardware or software depends on the specific application and design constraints of the technical solution.

[0081] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or they may be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0082] The above is only a specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present application, and all of them should be covered by the protection scope of the present application.

Claims

1. A method for measuring reflection loss of an optical fiber connector, characterized in that: The steps include: Adjust the control parameters of the laser source, introduce different degrees of light source fluctuations at the same power, use a high-precision optical power meter to continuously monitor the input and output of the optical fiber connector, and obtain the input fluctuation depth Bs i and the reflection loss Bh under each light source fluctuation condition i , construct a wave experiment data set, and detect the output of the laser source used this time to obtain the measured wave depth Cb, and extract the input wave depth Bs closest to the measured wave depth Cb from the wave experiment data set a And its corresponding reflection loss Bh a , calculate the light source correction coefficient Gj of this laser source a : Wherein, i represents the sequential number of each light source fluctuation condition, i=1, 2, ..., m, and the light source with a smaller number has a smaller fluctuation, and a represents the number of the input fluctuation depth closest to the measured fluctuation depth Cb in the fluctuation experimental data set; The total scattering intensity of the front and rear end faces and the front and rear reflection losses of different optical fiber connectors before and after cleaning were tested, and an end face cleaning experimental data set was constructed. The 10 front end face scattering total intensities Qs closest to the measured end face scattering total intensity Cs were extracted from the end face cleaning experimental data set. j Data, calculate the end face cleaning correction coefficient Dqj of this optical fiber connector; Get the total scattering intensity DQs of the undetermined front face k , the total rear face scattering intensity DHs to be determined k 、To be determined front reflection loss DQh k And the reflection loss DHh to be determined k , calculate the difference in scattering intensity between the front and rear faces Sc k , reflection loss difference Fc k And the before and after difference index Yc: Where k represents the total scattering intensity DQs of the front face to be determined k The sequence number is k = 1, 2, ..., 10; Obtain the difference in reflection loss between the front and rear faces Fc k And the front-to-back difference index Yc, calculate the end face cleaning correction coefficient Dqj of this optical fiber connector: According to the first output power Ed and the second output power Es, the rough reflection loss Fsc of the optical fiber connector is calculated, combined with the end face cleaning correction coefficient Dqj and the light source correction coefficient Gj a , calculate the exact reflection loss Jfs of the optical fiber connector; Without connecting the optical fiber connector to be tested, use an optical power meter to measure the first output power Ed at the output end. After connecting the optical fiber connector to be tested, use an optical power meter to measure the second output power Es at the output end and calculate the coarse reflection loss Fsc of the optical fiber connector: Where P 标 is the output power of standard optical fiber.

2. The method for measuring reflection loss of an optical fiber connector according to claim 1, characterized in that: Adjust the control parameters of the laser source, introduce different degrees of light source fluctuations at the same power, use a high-precision optical power meter to continuously monitor the input and output of the optical fiber connector, and obtain the input fluctuation depth Bs i and the reflection loss Bh under each light source fluctuation condition i , construct a fluctuation experiment data set.

3. The method for measuring reflection loss of an optical fiber connector according to claim 1, characterized in that: Use a light scattering detection device to illuminate the optical signal on the front and rear surfaces of the optical fiber connector before and after cleaning to measure the total intensity of scattered light, which is recorded as the total scattering intensity Qs on the front surface. j and the total scattered intensity Hs j The output of the optical fiber connector is continuously monitored using a high-precision optical power meter to obtain the total front face scattering intensity Qs. j and the total scattered intensity Hs j The corresponding front reflection loss Qh of the optical fiber connector is j And the back reflection loss Hh j , construct an end face cleaning experimental data set; wherein j represents the sequential number of different front face scattering total intensities, j=1, 2, ..., n, and the smaller the number, the smaller the value of the front face scattering total intensity.

4. The method for measuring reflection loss of an optical fiber connector according to claim 1, characterized in that: Use light scattering detection equipment to detect the optical fiber connector for reflection loss measurement, obtain the measured end face scattering total intensity Cs, and extract the 10 front end face scattering total intensities Qs closest to the measured end face scattering total intensity Cs from the end face cleaning experimental data set. j Data, and its corresponding rear end scattering total intensity Hs j , front reflection loss Qh j And the back reflection loss Hh j , renumbered and recorded as the total scattering intensity DQs k , the total rear face scattering intensity DHs to be determined k 、To be determined front reflection loss DQh k And the reflection loss DHh to be determined k .

5. The method for measuring reflection loss of an optical fiber connector according to claim 1, characterized in that: Obtain the rough reflection loss Fsc, end face cleanliness correction coefficient Dqj and light source correction coefficient Gj of the optical fiber connector a , calculate the exact reflection loss Jfs of the optical fiber connector: Jfs=Fsc(1+Dqj+Gj a ) The calculation formula for the precise reflection loss Jfs of the corresponding optical fiber connector is as above.

6. A fiber optic connector reflection loss measurement system, used to implement the method according to any one of claims 1 to 5, characterized in that: include: The light source correction module adjusts the control parameters of the laser source, constructs a fluctuation experiment data set, and detects the output of the laser source used this time to obtain the measured fluctuation depth Cb. The input fluctuation depth Bs closest to the measured fluctuation depth Cb is extracted from the fluctuation experiment data set. a And its corresponding reflection loss Bh a , calculate the light source correction coefficient Gj of this laser source a ; The port cleaning correction module detects the total scattering intensity of the front and rear end faces and the front and rear reflection losses of different optical fiber connectors before and after cleaning, builds an end face cleaning experimental data set, and extracts the 10 front end face scattering total intensities Qs that are closest to the measured end face scattering total intensity Cs from the end face cleaning experimental data set. j Data, calculate the end face cleaning correction coefficient Dqj of this optical fiber connector; The accurate reflection loss calculation module calculates the rough reflection loss Fsc of the optical fiber connector based on the first output power Ed and the second output power Es, combined with the end face cleaning correction coefficient Dqj and the light source correction coefficient Gj a , calculate the exact reflection loss Jfs of the optical fiber connector.

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