CN114046962A - Method and device for detecting quality of optical fiber fusion point - Google Patents
Method and device for detecting quality of optical fiber fusion point Download PDFInfo
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Abstract
The application discloses a method and a device for detecting the quality of an optical fiber fusion point, wherein the method comprises the following steps: controlling a light source to input detection light to the input end of the optical fiber where the detection fusion point is located, and obtaining the optical power of the output end of the optical fiber where the detection fusion point is located; calculating power loss according to the optical power of the detected light and the optical power of the output end; if the power loss is less than or equal to the preset power loss, determining that the quality of the detection welding point is qualified; and the environment temperature and the heat dissipation condition of different detection welding points are the same. The fusion point quality detection method and the fusion point quality detection device have the advantages that the fusion point quality is detected by calculating the power loss under the condition that the environment temperature and the heat dissipation condition are the same, the error rate of the fusion point quality detection is reduced, the production quality of the optical fiber and related products of the optical fiber is effectively improved, and the fusion point quality detection method and the fusion point quality detection device can be widely applied to the field of the optical fiber.
Description
Technical Field
The application relates to the field of optical fibers, in particular to a method and a device for detecting the quality of an optical fiber fusion point.
Background
Optical fibers have wide applications in a wide variety of fields. In the production of fiber lasers, it is often necessary to join two optical fibers or a fiber and a pigtail using a fiber fusion machine to fuse a bare fiber and a fiber pigtail in a fiber cable together into a single body, and this process of fusing optical fibers into a single body is called fiber fusion splicing. However, due to technical limitations, optical fiber fusion cannot be achieved completely without damage, leaving a fusion point at the fusion joint after completion of the optical fiber fusion. The quality of the fusion splice determines the degree of loss of light as it passes through the optical fiber, and therefore it is necessary to detect the quality of the fusion splice to remove the fusion splice having a lower quality, thereby improving the overall quality of the optical fiber. In the related art, the method for detecting the quality of the welding point mainly comprises the following steps: the test light is used for testing through the optical fiber with the detection fusion point, and if the optical fiber light can be obtained smoothly at the receiving end, the quality of the fusion point is reliable. This method cannot accurately detect the quality of the welded joint, has a high detection error rate, and cannot accurately detect the quality of the welded joint because only whether the welded joint can reflect light or not can be obtained.
Therefore, the above technical problems of the related art need to be solved.
Disclosure of Invention
The following is a summary of the subject matter described in detail herein. This summary is not intended to limit the scope of the claims.
The embodiment of the application provides a method and a device for detecting the quality of an optical fiber fusion point, which can accurately detect the quality of the optical fiber fusion point.
In a first aspect, an embodiment of the present application provides a method for detecting quality of an optical fiber fusion splice, where the method includes:
inputting detection light to the input end of the optical fiber where the detection fusion point is located;
acquiring the optical power of the output end of the optical fiber where the detection fusion point is located;
calculating power loss according to the optical power of the detected light and the optical power of the output end;
if the power loss is less than or equal to the preset power loss, determining that the quality of the detection welding point is qualified;
wherein, the heat dissipation conditions of different detection welding points are the same.
In one embodiment, if the power loss is greater than a predetermined power loss, the method further includes detecting a welding quality of a welding point between the light source input point and the output jumper:
gradually increasing the optical power of the detection light according to a preset power step to improve the temperature of the detection welding point;
gradually increasing the optical power of the detection light every step to obtain the optical power of the output end of the optical fiber where the detection fusion point is located and the temperature of other detection fusion points on the optical fiber;
and if the detection welding point with the highest temperature is other detection welding points except the welding point between the input point of the detection light source and the output jumper wire, judging that the welding quality of the optical fiber welding point is unqualified.
In one embodiment, if the detection welding point with the highest temperature is a welding point between the input point of the light source and the output jumper, then:
re-welding the welding point between the light source input point and the output jumper;
calculating power loss according to the optical power of the detected light and the optical power of the output end;
if the power loss is less than or equal to the preset power loss, determining that the quality of the detection welding point is qualified;
and if the power loss is larger than the preset power loss, determining that the quality of the detected welding point is unqualified.
In one embodiment, the method further comprises:
and if the current temperature of the detection welding point is higher than the preset temperature, stopping quality detection.
In one embodiment, the method further comprises:
and absorbing the optical fiber light overflowing from the detection welding point.
In one embodiment, the calculating the power loss according to the optical power of the detected light and the optical power of the output end specifically includes:
calculating a quotient of the optical power of the detected light divided by the optical power of the output;
carrying out logarithm operation on the quotient to obtain a logarithm operation result;
and taking the product of the logarithm operation result and a preset coefficient as the power loss.
In one embodiment, the method further comprises:
acquiring the power loss of the quality detection equipment;
and replacing the preset power loss by the sum of the preset power loss and the power loss of the quality detection equipment.
In a second aspect, an embodiment of the present application provides an apparatus for detecting quality of an optical fiber fusion splice, where the apparatus includes:
the input and output module is used for controlling the light source to input detection light to the input end of the optical fiber where the detection fusion point is located, and acquiring the optical power of the output end of the optical fiber where the detection fusion point is located;
the power loss calculation module is used for calculating power loss according to the optical power of the detected light and the optical power of the output end;
the first judgment module is used for determining that the quality of the detection welding point is qualified if the power loss is less than or equal to the preset power loss;
and the heat dissipation module is used for controlling the heat dissipation conditions of the different detection welding points to be the same.
In one embodiment, the apparatus comprises:
the power increasing module is used for increasing the optical power of the detection light step by step according to preset power so as to improve the temperature of the detection welding point;
the temperature acquisition module is used for gradually increasing the optical power of the detection light every step to acquire the optical power of the output end of the optical fiber where the detection fusion point is located and the temperatures of other detection fusion points on the optical fiber;
the second judgment module is used for judging that the welding quality of the welding point between the light source input point and the output jumper wire is poor if the detection welding point with the highest temperature is the welding point between the light source input point and the output jumper wire; and if the detection welding point with the highest temperature is other detection welding points, judging that the welding quality of the optical fiber welding point is unqualified.
In one embodiment, the apparatus comprises:
the detection welding point protection module is used for absorbing optical fiber light overflowing from the detection welding point;
and the error compensation module is used for acquiring the power loss of the quality detection equipment and replacing the preset power loss with the sum of the preset power loss and the power loss of the quality detection equipment.
The embodiment of the application at least comprises the following beneficial effects: controlling a light source to input detection light to the input end of the optical fiber where the detection fusion point is located, and obtaining the optical power of the output end of the optical fiber where the detection fusion point is located; calculating power loss according to the optical power of the detected light and the optical power of the output end; if the power loss is less than or equal to the preset power loss, determining that the quality of the detection welding point is qualified; and the environment temperature and the heat dissipation condition of different detection welding points are the same. This application calculates under the condition that keeps ambient temperature and heat dissipation condition the same and detects the power loss of light through optic fibre front and back and detect the splice point quality, can in time get rid of the splice point that the splice quality is poor, has reduced the error rate that optic fibre splice point quality detected, effectively improves the production quality of optic fibre and relevant product, and production efficiency has improved the yields.
Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the application. The objectives and other advantages of the application may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The accompanying drawings are included to provide a further understanding of the claimed subject matter and are incorporated in and constitute a part of this specification, illustrate embodiments of the subject matter and together with the description serve to explain the principles of the subject matter and not to limit the subject matter.
FIG. 1 is a schematic diagram of a method for detecting quality of an optical fiber fusion splice according to an embodiment of the present disclosure;
FIG. 2 is a flowchart of a method for detecting quality of an optical fiber fusion splice according to an embodiment of the present disclosure;
fig. 3 is a detection light stepping increasing flow chart of the method for detecting quality of an optical fiber fusion splice point according to the embodiment of the present application;
FIG. 4 is a temperature detection flowchart of a method for detecting quality of an optical fiber fusion splice according to an embodiment of the present disclosure;
fig. 5 is a flowchart of fusion splice loss power calculation of a method for detecting quality of an optical fiber fusion splice according to an embodiment of the present disclosure;
fig. 6 is a schematic view of an apparatus for detecting quality of an optical fiber fusion splice according to an embodiment of the present application.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The terms "first," "second," "third," and "fourth," etc. in the description and claims of this application and the accompanying drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
Before further detailed description of the embodiments of the present application, terms and expressions referred to in the embodiments of the present application are explained, and the terms and expressions referred to in the embodiments of the present application are applicable to the following explanations:
fusion points of optical fibers: the process of fusing bare fibers and fiber pigtails together into a single unit by splicing two fibers or splicing a fiber and pigtail using a fusion splicing apparatus is called fiber fusion splicing.
Optical power: optical power refers to the power of light, i.e., the work that light does in a unit of time. Optical power units are often expressed in milliwatts (mw) and decibel milliwatts (dBm). The optical power may be detected by an optical power detection device, such as an optical power meter.
Optical power loss: the optical power loss means that energy is lost during transmission of light due to some reasons, and specifically, particles in a light beam are lost due to obstruction on a transmission path, so that the optical power is reduced.
The related method for detecting the quality of the fusion point of the optical fiber comprises the following steps:
the test light is used for testing through the optical fiber with the detection fusion point, and if the optical fiber light can be obtained smoothly at the receiving end, the quality of the fusion point is reliable. This method cannot accurately detect the quality of the welded joint, has a high detection error rate, and cannot accurately detect the quality of the welded joint because only whether the welded joint can reflect light or not can be obtained.
Based on this, the embodiment of the application provides a method and a device for detecting the quality of an optical fiber fusion point, which can detect the quality of the optical fiber fusion point more accurately.
Referring to fig. 1, fig. 1 is a schematic diagram of a method for detecting quality of an optical fiber fusion splice provided in an embodiment of the present application, where:
and the standard detection light source 10 is used for providing a detection light source for quality detection of the optical fiber fusion point, the standard detection light source can generate detection light sources with different powers and wavelengths according to the needs of technicians, and the standard detection light source can change the power of the generated light according to input so as to test the optical characteristics of different optical fibers. Alternatively, the standard detection light source can be an LD pumping light source with the wavelength of 330W and 976nm after calibration.
The optical fiber 20 at which the detection fusion point is located has one end connected to the standard detection light source 10, receives the detection light generated by the standard detection light source and conducts the detection light through the optical characteristics of the optical fiber, and has the other end connected to the optical power meter 60, and transmits the conducted optical fiber light to the optical power meter 60.
And a weld point processing device 30, provided at the detection weld point 40, for performing a series of processes including temperature control, absorption of overflowing light, and the like on the detection weld point.
Detect splice point 40, the optical fiber fusion can not accomplish lossless fusion splice completely, can leave the splice point at the splice after the optical fiber fusion is accomplished, this kind of splice point that leaves at the splice after the optical fiber fusion is accomplished is the detection splice point of this application promptly, the loss degree when the optical fiber has been decided to the quality of splice point, consequently need detect the splice point's quality and remove the lower splice point of quality, improve the whole quality of optical fiber.
And the temperature acquisition module 50 is used for acquiring the temperature of the welding point detection accessories and the area thereof. For example, an infrared temperature sensor may be used as the temperature acquisition module, so that the temperature of the detection fusion point attachment and the area thereof can be accurately measured without contacting the optical fiber 20 where the detection fusion point is located.
And the optical power meter 60 is configured to receive the optical fiber light output by the optical fiber 20 at the detection fusion point, detect the optical power of the optical fiber light output by the optical fiber 20 at the detection fusion point, and then display the calculated optical power result on a display screen or other display devices.
Based on the quality detection principle of the optical fiber fusion point shown in fig. 1, referring to fig. 2, an embodiment of the present application provides a quality detection method of an optical fiber fusion point, which is used for performing quality detection on a fusion point after fusion, and the method at least includes the following steps:
s201, inputting detection light to the input end of the optical fiber where the detection fusion point is located, and obtaining the optical power of the output end of the optical fiber where the detection fusion point is located.
In one embodiment, the light source may be a standard detection light source for optical fiber detection, which can generate detection light sources with different powers and wavelengths according to the needs of technicians, and the standard detection light source can change the power of the generated light according to the input to test the optical characteristics of different optical fibers.
In an embodiment, the method provided by this embodiment controls the calibration power of the light source, and inputs the detection light to the input end of the optical fiber where the detection fusion point is located after completing the parameter setting of the detection light source; meanwhile, the optical power readings obtained by the detection of the optical power meter are read in real time at the output end of the optical fiber where the detection fusion point is located, so that the optical power of the input detection light and the optical power of the output detection light can be corresponded at each time node, and the condition of large data error caused by the change of the optical power and asynchronous time is reduced.
And S202, calculating power loss according to the optical power of the detected light and the optical power of the output end.
In one embodiment, a difference is created between the optical power of the detection light and the optical power at the output, which is the amount of optical loss of the optical fiber due to the detection fusion splice. Therefore, in this embodiment, the power loss of the detection fusion point with respect to the light in the optical fiber transmission process can be objectively reflected by the value calculated according to the optical power of the detection light and the optical power of the output end.
S203, judging whether the power loss is less than or equal to the preset power loss.
In one embodiment, the predetermined power loss is a loss value that is flexibly set by a technician based on the actual parameters and usage of the optical fiber. In the process of optical fiber fusion, because the optical fiber fusion can not be completely undamaged, the quality of the optical fiber fusion point can be satisfied only by keeping the loss value of the fusion point to the optical fiber below a certain level.
In one embodiment, the power loss of the optical fiber fusion point reaching the quality detection standard is set as the preset power, which indicates that the quality of the optical fiber fusion point meets the production requirement when the power of the loss of the optical fiber light after passing through the optical fiber fusion point is less than the preset power.
And S204, if the power loss is less than or equal to the preset power loss, determining that the quality of the detected welding point is qualified.
In this embodiment, the quality of the welding point is detected under the same condition of the different environmental temperatures and the same heat dissipation conditions of the detection welding point. The ambient temperature may be set to 24 degrees celsius, and the heat dissipation condition may be kept the same by disposing a water-cooling plate or a heat dissipation device at all the detection welding points for heat dissipation.
In one embodiment, if the power loss is greater than the predetermined power loss, it indicates that the optical power loss of the light during the optical fiber transmission exceeds the predetermined value. However, the reasons for the loss of optical power in the optical fiber transmission process exceeding the preset value may include: the quality of the detection fusion point does not accord with the standard, or the detection fusion point is detected when the optical fiber connection of the standard detection light source input point and the detection fusion point has a problem, the quality of the optical fiber fusion point is further detected, the possibility that the optical fiber fusion point with the quality meeting the standard is judged to be the optical fiber fusion point with the quality not meeting the standard by mistake is reduced, and the error rate of the quality detection of the optical fiber fusion point is reduced.
Detecting a weld in one embodiment, the method of obtaining the current temperature of the detected weld and its surrounding area may be: and controlling a temperature sensor to acquire the current temperature of the detection welding point and the area around the detection welding point, recording the time for acquiring the temperature samples, and storing the current temperature of the detection welding point and the area around the detection welding point and the corresponding time for acquiring the temperature samples as a group of data. The method has the advantages that the current temperature of the detection welding point can be obtained, each temperature value comprises corresponding obtaining time, the temperature and the time of the detection welding point are corresponding, and a temperature-time coordinate graph can be made when needed.
In one embodiment, when the temperature of the detection fusion point exceeds the preset temperature, it means that the detection fusion point has more fiber light overflow after the optical power of the detection light is increased in the previous step, and thus more heat is generated to raise the temperature of the detection fusion point. Namely, the higher the temperature of the detection welding point is, the lower the quality of the detection welding point is, and when the temperature of the detection welding point exceeds the preset temperature, the quality of the detection welding point can be determined to be unqualified.
It can be understood that, in this embodiment, the control light source may simultaneously input detection light to the input end of the optical fiber where the detection fusion point is located, and label each optical fiber where the detection fusion point is located, and may simultaneously obtain a plurality of optical powers of the output end of the optical fiber where the detection fusion point is located. That is, the method for detecting the quality of the optical fiber fusion-splicing point provided in this embodiment can detect the optical fibers where the plurality of detection fusion-splicing points are located at the same time (for example, the optical fibers where the plurality of detection fusion-splicing points are located may be set as an optical fiber bundle), and the specific number is not limited in this embodiment of the application.
According to the above embodiments and the description thereof, in the quality detection method for the optical fiber fusion point provided in this embodiment, the detection light is input to the input end of the optical fiber where the detection fusion point is located, so as to obtain the optical power of the output end of the optical fiber where the detection fusion point is located, and the detection light passes through the detection fusion point and the optical fiber where the detection fusion point is located; calculating power loss according to the optical power of the detection light and the optical power of the output end, if the power loss is smaller than or equal to the preset power loss, determining that the quality of the detection welding point is qualified, wherein the loss degree of the detection light can objectively reflect the quality of the welding point, and when the detection light degree is smaller than or equal to the preset power loss, the detection welding point can be determined to be qualified, so that the number of the detection welding points is reduced, and the detection resources are saved; if the power loss is larger than the preset power loss, the optical power of the detection light is increased, the current temperature of the detection welding point is obtained, if the current temperature of the detection welding point is larger than the preset temperature, the quality of the detection welding point is determined to be unqualified, the optical power is increased, the temperature of the welding point can be increased, the quality of the welding point can be reflected by the temperature of the detection welding point, and the welding point with lower quality can be found out by further detecting the temperature of the welding point. This application detects the splice point quality through calculating the power loss that detects the light around through optic fibre, can in time get rid of the splice point that the splice quality is poor to further detect the quality of splice point through the temperature parameter when power loss is great, reduced the error rate that optic fibre splice point quality detected, effectively improved the production quality of optic fibre and relevant product, production efficiency has improved the yields.
Referring to fig. 3, fig. 3 is a detection light stepping and increasing flow chart of the optical fiber fusion splice point quality detection method according to the embodiment of the present application. The method for controlling the light source to input the detection light to the input end of the optical fiber where the detection fusion point is located specifically comprises the following steps:
s301, the optical power of the detection light is increased step by step according to the preset power so as to improve the temperature of the detection welding point.
In one embodiment, the step-up of the optical power of the detected light by a preset power step may be: the optical power of the detection light is increased incrementally at preset intervals, for example, 10W is used as a preset increment interval, if the initial optical power is 10W, the optical power of the detection light is 20W after the next increment, 30W for the second time and 40W. Optionally, a table and a functional relation graph can be drawn to express the quantitative relation among the input optical power, the output optical power and the time, so that a technician can conveniently obtain data.
S302, gradually increasing the optical power of the detection light every step to obtain the optical power of the output end of the optical fiber where the detection fusion point is located and the temperature of other detection fusion points on the optical fiber.
And S303, if the detection welding point with the highest temperature is other detection welding points except the welding point between the detection light source input point and the output jumper wire, judging that the welding quality of the optical fiber welding point is unqualified.
It should be noted that, detecting the welding point between the light source input point and the output jumper is: the optical fiber welding points exist between the detection light source and the output patch cord, the welding points do not belong to detection welding points, but power and temperature data are also generated in the detection process of the embodiment, so that the welding points between the input point of the detection light source and the output patch cord need to be eliminated during detection, and if the detection welding points with the highest temperature are other detection welding points except the welding points between the input point of the detection light source and the output patch cord, the welding quality of the optical fiber welding points is judged to be unqualified. Wherein a patch cord is a patch cord used to route a link from a device to an optical fiber. The output jumper in this embodiment refers to the jumper between the detection light source and the detection optical fiber.
In this embodiment, if the detection welding point with the highest temperature is the welding point between the light source input point and the output jumper, then: re-welding the welding point between the light source input point and the output jumper; calculating power loss according to the optical power of the detected light and the optical power of the output end; if the power loss is less than or equal to the preset power loss, determining that the quality of the detection welding point is qualified; and if the power loss is larger than the preset power loss, determining that the quality of the detected welding point is unqualified. Specifically, the detection welding point with the highest temperature is the welding point between the light source input point and the output jumper, which indicates that the welding quality of the welding point between the light source input point and the output jumper is poor, so that the welding point between the light source input point and the output jumper needs to be welded again, and after the welding is completed again, the quality detection process as described in the above embodiment needs to be performed again to reduce the probability of missed detection of the welding point.
Referring to fig. 4, fig. 4 is a temperature detection flow chart of a method for detecting quality of an optical fiber fusion splice according to an embodiment of the present application. In the optical fiber fusion point detection process that this embodiment provided, still can carry out whole journey monitoring to the temperature of optical fiber fusion point, specifically as follows:
s401, obtaining the current temperature of the detection welding point.
In one embodiment, obtaining the current temperature of the detection welding point refers to monitoring the temperature of the detection welding point in real time, continuously monitoring the temperature of a target area (the detection welding point and the area near the detection welding point in the embodiment) according to a high-frequency sampling method, and simultaneously recording the time for monitoring the temperature, and forming corresponding data with the detected temperature.
S402, if the current temperature of the detection welding point is larger than the preset temperature, stopping detection.
In this embodiment, the preset temperature is equivalent to the upper threshold of the detection fusion point temperature, and when the detection fusion point temperature exceeds the preset temperature, it indicates that a large amount of optical fiber light overflows from the detection fusion point in the process of transmitting the light source by the optical fiber, so that a large amount of heat is generated, and in order to improve the safety of the detection process, the detection should be stopped in time.
Alternatively, after determining that the detected fusion point does not meet the quality requirement in the above embodiment, the fusion point should be re-fused, and then the detection of the quality detection method for the optical fiber fusion point provided in this embodiment is repeated for the re-fused fusion point.
It can be understood that, in the process of detecting the quality of the optical fiber fusion point, certain processing needs to be performed on the detected optical fiber fusion point to reduce the scattering condition of the optical fiber light at the optical fiber fusion point with lower quality, which is specifically as follows:
and absorbing the optical fiber light overflowing from the detection welding point.
In one embodiment, a method of absorbing optical fiber light that is spilled over a detection fusion splice may include: and wrapping a light absorption material at the detection welding point, or arranging an optical fiber absorption device at the detection welding point. In the process of testing the optical fiber, the light intensity of the tested detection light is often large, and if the scattering amount at the fusion point of the optical fiber is too large, the light may be scattered to a free space, and the possibility of safety accidents is increased. Therefore, the optical fiber light overflowing from the detection fusion point is absorbed through the embodiment, the scattering condition of the optical fiber light at the optical fiber fusion point with lower quality can be reduced, and the safety of the detection process is improved.
Referring to fig. 5, fig. 5 is a flowchart of fusion splice loss power calculation of a method for detecting quality of an optical fiber fusion splice according to an embodiment of the present disclosure. The calculation method is as follows:
and S501, calculating the quotient of the optical power of the detected light divided by the optical power of the output end.
And S502, carrying out logarithmic operation on the quotient to obtain a logarithmic operation result.
And S503, taking the product of the logarithm operation result and a preset coefficient as the power loss.
For example, the optical power of the detection light is set to W1The light power of the output end is adjustedThe ratio is set as W2If the power loss is set to n, the base number of the logarithmic operation is set to m, and the preset coefficient is set to K, the mathematical calculation expression of the fusion point power loss in the present embodiment may be:
it should be understood that the above mathematical calculation formula is one of the calculation formulas of the welding point loss power, and other calculation methods (for example, mathematical methods such as fitting operation and floating point operation) are also included in the calculation of the welding point loss power in the present embodiment, and the present description is not limited in particular.
Optionally, this embodiment further includes, in the calculation process, adjustment and compensation of the calculation loss, including: acquiring the power loss of the quality detection equipment; and replacing the preset power loss by the sum of the preset power loss and the power loss of the quality detection equipment. The method comprises the following specific steps: setting the power loss as n, if the welding point loss n is less than or equal to 0.1dB, the welding quality of the welding point is satisfied, and if the tested device also has losses n1, n2, n3 and … … nx, the calculated loss is adjusted to be n less than or equal to n1+ n2+ n3+ … … + nx +0.1 dB. Through the adjustment and compensation of the embodiment on the calculation loss, the influence of the loss of the test device on the test result can be effectively reduced, and the stability and the accuracy of the test result are effectively improved.
In addition, referring to fig. 6, an embodiment of the present application further provides an apparatus for detecting quality of an optical fiber fusion splice, where the apparatus includes:
the input/output module 601 is configured to control the light source to input detection light to the input end of the optical fiber where the detection fusion point is located, and obtain optical power of the output end of the optical fiber where the detection fusion point is located.
A power loss calculating module 602, configured to calculate a power loss according to the optical power of the detected light and the optical power of the output end.
A first determining module 603, configured to determine that the quality of the detected weld point is qualified if the power loss is less than or equal to a preset power loss.
And the heat dissipation module 604 is configured to control heat dissipation conditions of different detection weld points to be the same.
In one embodiment, the apparatus comprises:
the power increasing module is used for increasing the optical power of the detection light step by step according to preset power so as to improve the temperature of the detection welding point; the temperature acquisition module is used for gradually increasing the optical power of the detection light every step to acquire the optical power of the output end of the optical fiber where the detection fusion point is located and the temperature of the detection fusion point; the second judgment module is used for re-welding the welding point between the light source input point and the output jumper if the detection welding point with the highest temperature is the welding point between the light source input point and the output jumper; and if the detection welding point with the highest temperature is not the welding point between the light source input point and the output jumper wire, determining that the quality of the detection welding point with the highest temperature is unqualified.
In one embodiment, the apparatus comprises: the detection welding point protection module is used for absorbing optical fiber light overflowing from the detection welding point; and the error compensation module is used for acquiring the power loss of the quality detection equipment and replacing the preset power loss with the sum of the preset power loss and the power loss of the quality detection equipment.
In alternative embodiments, the functions/acts noted in the block diagrams may occur out of the order noted in the operational illustrations. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality/acts involved. Furthermore, the embodiments presented and described in the flowcharts of the present application are provided by way of example in order to provide a more thorough understanding of the technology. The disclosed methods are not limited to the operations and logic flows presented herein. Alternative embodiments are contemplated in which the order of various operations is changed and in which sub-operations described as part of larger operations are performed independently.
Furthermore, although the present application is described in the context of functional modules, it should be understood that, unless otherwise stated to the contrary, one or more of the functions and/or features may be integrated in a single physical device and/or software module, or one or more functions and/or features may be implemented in separate physical devices or software modules. It will also be appreciated that a detailed discussion regarding the actual implementation of each module is not necessary for an understanding of the present application. Rather, the actual implementation of the various functional modules in the apparatus disclosed herein will be understood within the ordinary skill of an engineer, given the nature, function, and internal relationship of the modules. Accordingly, those skilled in the art can, using ordinary skill, practice the present application as set forth in the claims without undue experimentation. It is also to be understood that the specific concepts disclosed are merely illustrative of and not intended to limit the scope of the application, which is defined by the appended claims and their full scope of equivalents.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The logic and/or steps represented in the flowcharts or otherwise described herein, e.g., an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device.
More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.
It should be understood that portions of the present application may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
In the foregoing description of the specification, reference to the description of "one embodiment/example," "another embodiment/example," or "certain embodiments/examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: numerous changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.
The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.
Claims (10)
1. A method for detecting the quality of an optical fiber fusion splice point is characterized by comprising the following steps:
inputting detection light to the input end of the optical fiber where the detection fusion point is located;
acquiring the optical power of the output end of the optical fiber where the detection fusion point is located;
calculating power loss according to the optical power of the detected light and the optical power of the output end;
if the power loss is less than or equal to the preset power loss, determining that the quality of the detection welding point is qualified;
wherein, the heat dissipation conditions of different detection welding points are the same.
2. The method of claim 1, wherein if the power loss is greater than a predetermined power loss, the method further comprises detecting a fusion quality of the fusion point between the input point and the output jumper of the light source:
gradually increasing the optical power of the detection light according to a preset power step to improve the temperature of the detection welding point;
gradually increasing the optical power of the detection light every step to obtain the optical power of the output end of the optical fiber where the detection fusion point is located and the temperature of other detection fusion points on the optical fiber;
and if the detection welding point with the highest temperature is other detection welding points except the welding point between the input point of the detection light source and the output jumper wire, judging that the welding quality of the optical fiber welding point is unqualified.
3. The method for detecting the quality of the fusion splicing point of the optical fibers according to claim 2, wherein if the detection fusion splicing point with the highest temperature is the fusion splicing point between the input point of the light source and the output jumper wire, the method comprises the following steps:
re-welding the welding point between the light source input point and the output jumper;
calculating power loss according to the optical power of the detected light and the optical power of the output end;
if the power loss is less than or equal to the preset power loss, determining that the quality of the detection welding point is qualified;
and if the power loss is larger than the preset power loss, determining that the quality of the detected welding point is unqualified.
4. The method of claim 1, further comprising:
and if the current temperature of the detection welding point is higher than the preset temperature, stopping quality detection.
5. The method of claim 1, further comprising:
and absorbing the optical fiber light overflowing from the detection welding point.
6. The method for detecting the quality of the optical fiber fusion-splicing point according to any one of claims 1 to 3, wherein the calculating the power loss according to the optical power of the detected light and the optical power of the output end specifically comprises:
calculating a quotient of the optical power of the detected light divided by the optical power of the output;
carrying out logarithm operation on the quotient to obtain a logarithm operation result;
and taking the product of the logarithm operation result and a preset coefficient as the power loss.
7. The method of claim 1, further comprising:
acquiring the power loss of the quality detection equipment;
and replacing the preset power loss by the sum of the preset power loss and the power loss of the quality detection equipment.
8. An apparatus for detecting quality of an optical fiber fusion splice, the apparatus comprising:
the input and output module is used for controlling the light source to input detection light to the input end of the optical fiber where the detection fusion point is located, and acquiring the optical power of the output end of the optical fiber where the detection fusion point is located;
the power loss calculation module is used for calculating power loss according to the optical power of the detected light and the optical power of the output end;
the first judgment module is used for determining that the quality of the detection welding point is qualified if the power loss is less than or equal to the preset power loss;
and the heat dissipation module is used for controlling the heat dissipation conditions of the different detection welding points to be the same.
9. An apparatus for testing the quality of an optical fiber fusion splice according to claim 8, comprising:
the power increasing module is used for increasing the optical power of the detection light step by step according to preset power so as to improve the temperature of the detection welding point;
the temperature acquisition module is used for gradually increasing the optical power of the detection light every step to acquire the optical power of the output end of the optical fiber where the detection fusion point is located and the temperatures of other detection fusion points on the optical fiber;
the second judgment module is used for judging that the welding quality of the welding point between the light source input point and the output jumper wire is poor if the detection welding point with the highest temperature is the welding point between the light source input point and the output jumper wire; and if the detection welding point with the highest temperature is other detection welding points, judging that the welding quality of the optical fiber welding point is unqualified.
10. An apparatus for testing the quality of an optical fiber fusion splice according to claim 8, comprising:
the detection welding point protection module is used for absorbing optical fiber light overflowing from the detection welding point;
and the error compensation module is used for acquiring the power loss of the quality detection equipment and replacing the preset power loss with the sum of the preset power loss and the power loss of the quality detection equipment.
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