CN116148978A - Method and device for connecting high-density multi-core optical fibers and computer readable storage medium - Google Patents
Method and device for connecting high-density multi-core optical fibers and computer readable storage medium Download PDFInfo
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- CN116148978A CN116148978A CN202310433003.3A CN202310433003A CN116148978A CN 116148978 A CN116148978 A CN 116148978A CN 202310433003 A CN202310433003 A CN 202310433003A CN 116148978 A CN116148978 A CN 116148978A
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- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/255—Splicing of light guides, e.g. by fusion or bonding
- G02B6/2553—Splicing machines, e.g. optical fibre fusion splicer
Abstract
The present invention relates to the field of optical fiber communications technologies, and in particular, to a method and an apparatus for connecting high-density multi-core optical fibers, and a computer readable storage medium. Wherein the method comprises the following steps: acquiring images of parts to be welded of the first multi-core optical fiber and the second multi-core optical fiber; determining the cleanliness of the parts to be welded of the first multi-core optical fiber and the second multi-core optical fiber according to the images of the parts to be welded; selecting a target welding scheme according to the cleanliness of the to-be-welded part; and controlling the optical fiber welding device to execute welding operation according to the target welding scheme. The cleanliness of the to-be-welded parts at the two ends of the first multi-core optical fiber and the second multi-core optical fiber which need to be welded is determined, and the corresponding target welding scheme is selected according to the cleanliness to weld, so that the welding effect is prevented from being poor due to impurities in the to-be-welded parts of the multi-core optical fibers. The problem of how to improve the fusion splicing effect of the optical fibers is solved.
Description
Technical Field
The present invention relates to the field of optical fiber communications technologies, and in particular, to a method and an apparatus for connecting high-density multi-core optical fibers, and a computer readable storage medium.
Background
The optical fiber transmission has the advantages of low loss, wide transmission frequency band, large communication capacity, small optical cable diameter, light weight, no electromagnetic influence and the like, and is widely applied to various network access systems. However, the optical fiber is lost in the transmission process, which limits the distance between the signal transmission distance and the relay station, and is difficult to be suitable for the ultra-large capacity optical fiber communication scene. Currently, multicore fibers are considered as a preferred solution for ultra-high capacity fiber communication. A multi-core fiber is a fiber that includes multiple cores in a common cladding region, with the advantages of long distance and low crosstalk.
However, the connection of the multi-core optical fibers has higher requirements on connection accuracy, and it is required to ensure that all core areas between two multi-core optical fibers are well connected. In a common multi-core fiber connection scheme, an operator typically observes whether the fiber axes are aligned and fusion splices the fibers after alignment.
However, this connection method has a disadvantage in that the fusion is performed by only aligning the optical fibers, and when impurities exist at the fusion-spliced portion of the multi-core optical fibers to be fused, the fusion-splicing effect is poor, which affects the transmission efficiency after the fusion-splicing of the optical fibers.
The foregoing is provided merely for the purpose of facilitating understanding of the technical solutions of the present invention and is not intended to represent an admission that the foregoing is prior art.
Disclosure of Invention
The invention mainly aims to provide a connecting method of high-density multi-core optical fibers, which aims to solve the problem of how to improve the fusion welding effect of the optical fibers.
In order to achieve the above object, the present invention provides a method for connecting high-density multi-core optical fibers, the method comprising:
acquiring images of parts to be welded of the first multi-core optical fiber and the second multi-core optical fiber;
determining the cleanliness of the parts to be welded of the first multi-core optical fiber and the second multi-core optical fiber according to the images of the parts to be welded;
selecting a target welding scheme according to the cleanliness of the to-be-welded part;
and controlling the optical fiber welding device to execute welding operation according to the target welding scheme.
Optionally, the step of determining the cleanliness of the fusion-spliced portion of the first multi-core optical fiber and the second multi-core optical fiber according to the fusion-spliced portion image includes:
determining impurity points in the to-be-welded part image based on an image analysis algorithm;
and determining the cleanliness of the parts to be welded according to the number, the area and/or the distribution of the impurity points.
Optionally, the step of selecting the target welding scheme according to the cleanliness of the to-be-welded part comprises the following steps:
determining whether the cleanliness of the to-be-welded part is larger than a preset threshold value;
and if the first fusion scheme is larger than the preset threshold, determining a first fusion scheme as the target fusion scheme, wherein under the first fusion scheme, the optical fiber counter shaft mechanism drives the second multi-core optical fiber to move to butt joint with a fusion joint of the first multi-core optical fiber, and after the butt joint, the fusion mechanism executes fusion operation at the butt joint.
Optionally, after the step of determining whether the cleanliness of the to-be-welded part is greater than a preset threshold, the method further includes:
and if the second welding scheme is smaller than the preset threshold value, determining the second welding scheme as the target welding scheme, wherein under the second welding scheme, controlling the welding mechanism to operate at first power, then controlling the optical fiber pair shaft mechanism to drive the second multi-core optical fiber to move to butt joint with a welding part of the first multi-core optical fiber, and controlling the welding mechanism to operate at second power after butt joint, wherein the first power is smaller than the second power.
Optionally, before the step of controlling the optical fiber fusion device to perform the fusion splicing operation according to the control parameter in the target fusion splicing scheme, the method further includes:
acquiring end face images of the first multi-core optical fiber and the second multi-core optical fiber;
determining the optical fiber concentricity of the second multi-core optical fiber compared with the first multi-core optical fiber according to the end face image;
determining driving parameters of an optical fiber to shaft mechanism based on the optical fiber concentricity;
and controlling the optical fiber pair shaft mechanism to drive the second multi-core optical fiber to move based on the driving parameters so as to align the second multi-core optical fiber with the first multi-core optical fiber.
Optionally, the step of determining the optical fiber concentricity of the second multi-core optical fiber compared to the first multi-core optical fiber according to the end face image includes:
extracting an optical fiber contour line in the end face image;
identifying one or more pieces of identification bit information of the second multi-core optical fiber pre-marked on the optical fiber contour line as first identification bit information;
identifying each piece of identification bit information on the first multi-core optical fiber pre-marked on the optical fiber contour line as second identification bit information;
determining a degree of deviation between one or more of the first identifying bit information and the nearest second identifying bit information;
and determining the concentricity value meeting the deviation degree as the optical fiber concentricity.
Optionally, the step of determining the driving parameter of the pair of shaft mechanisms based on the optical fiber concentricity comprises:
determining a rotation angle and/or a movement coordinate of the pair of shaft mechanisms based on the concentricity of the optical fibers;
and determining a shaft axis parameter meeting the rotation angle and/or the movement coordinate as the driving parameter.
Optionally, the first side of the optical fiber fusion device is provided with an optical power detector, the second side of the optical fiber fusion device is provided with a test light source, and after the step of controlling the optical fiber fusion device to execute the fusion operation according to the control parameters in the target fusion scheme, the method further comprises:
transmitting a power-on signal to the test light source to start the test light source to transmit a test light beam with a constant light power value to the light power detector;
acquiring a received light power value generated by the light power detector based on the test light beam;
determining a power difference between the received optical power value and an optical power value of the test beam;
outputting an optical fiber fusion completion prompt if the power difference is smaller than a preset power difference threshold;
otherwise, outputting a prompt of failure of fusion welding of the optical fibers.
In addition, to achieve the above object, the present invention also provides an optical fiber connecting device including: the method comprises the steps of a memory, a processor and a high-density multi-core optical fiber connecting program stored in the memory and capable of running on the processor, wherein the high-density multi-core optical fiber connecting program is executed by the processor to realize the high-density multi-core optical fiber connecting method.
In addition, in order to achieve the above object, the present invention also provides a computer-readable storage medium having stored thereon a connection program of high-density multi-core optical fibers, which when executed by a processor, implements the steps of the connection method of high-density multi-core optical fibers as described above.
The embodiment of the invention provides a method, a device and a computer readable storage medium for connecting high-density multi-core optical fibers, which are used for determining the cleanliness of a part to be welded at two ends of a first multi-core optical fiber and a second multi-core optical fiber to be welded, and selecting a corresponding target welding scheme according to the cleanliness to weld, so that the welding effect is prevented from being deteriorated when impurities exist at the welding part of the multi-core optical fibers to be welded.
Drawings
FIG. 1 is a schematic diagram of a hardware operating environment of an optical fiber connection device according to an embodiment of the present invention;
FIG. 2 is a flow chart of a first embodiment of a method of connecting high-density multi-core optical fibers according to the present invention;
FIG. 3 is a flow chart of a second embodiment of a method of connecting high-density multi-core optical fibers according to the present invention;
FIG. 4 is a flow chart of a third embodiment of a method of connecting high-density multi-core optical fibers according to the present invention;
FIG. 5 is a flow chart of a fourth embodiment of a method of connecting high-density multi-core optical fibers according to the present invention;
the achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
According to the method, the cleanliness of the welding parts at the two ends of the first multi-core optical fiber and the second multi-core optical fiber which need to be welded is determined, the corresponding target welding scheme is selected according to the cleanliness to weld, and the problem that the welding effect is poor due to the fact that impurities exist at the welding parts of the multi-core optical fibers to be welded is avoided.
In order to better understand the above technical solution, exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
As an implementation scheme, fig. 1 is a schematic architecture diagram of a hardware operating environment of an optical fiber fusion device according to an embodiment of the present invention.
As shown in fig. 1, the optical fiber connection apparatus may include: a processor 1001, such as a CPU, memory 1005, user interface 1003, network interface 1004, communication bus 1002. Wherein the communication bus 1002 is used to enable connected communication between these components. The user interface 1003 may include a Display, an input unit such as a Keyboard (Keyboard), and the optional user interface 1003 may further include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a wireless interface (e.g., WI-FI interface). The memory 1005 may be a high-speed RAM memory or a stable memory (non-volatile memory), such as a disk memory. The memory 1005 may also optionally be a storage device separate from the processor 1001 described above.
It will be appreciated by those skilled in the art that the architecture of the optical fiber fusion device shown in FIG. 1 is not limiting of the optical fiber fusion device and may include more or fewer components than shown, or certain components may be combined, or a different arrangement of components.
As shown in fig. 1, an operating system, a network communication module, a user interface module, and a connection program of the high-density multi-core optical fiber may be included in the memory 1005 as one type of storage medium. The operating system is a program for managing and controlling hardware and software resources of the optical fiber fusion device, a connecting program of the high-density multi-core optical fiber and other software or program operation.
In the optical fiber fusion splicing apparatus shown in fig. 1, the user interface 1003 is mainly used for connecting a terminal, and performs data communication with the terminal; the network interface 1004 is mainly used for a background server and is in data communication with the background server; the processor 1001 may be used to invoke a connection program for the high-density multi-core optical fiber stored in the memory 1005.
In this embodiment, an optical fiber fusion splicing apparatus includes: a memory 1005, a processor 1001, and a connection program for a high-density multi-core optical fiber stored on the memory and executable on the processor, wherein:
when the processor 1001 calls a connection program of the high-density multi-core optical fiber stored in the memory 1005, the following operations are performed:
acquiring images of parts to be welded of the first multi-core optical fiber and the second multi-core optical fiber;
determining the cleanliness of the parts to be welded of the first multi-core optical fiber and the second multi-core optical fiber according to the images of the parts to be welded;
selecting a target welding scheme according to the cleanliness of the to-be-welded part;
and controlling the optical fiber welding device to execute welding operation according to the target welding scheme.
When the processor 1001 calls a connection program of the high-density multi-core optical fiber stored in the memory 1005, the following operations are performed:
determining impurity points in the to-be-welded part image based on an image analysis algorithm;
and determining the cleanliness of the parts to be welded according to the number, the area and/or the distribution of the impurity points.
When the processor 1001 calls a connection program of the high-density multi-core optical fiber stored in the memory 1005, the following operations are performed:
determining whether the cleanliness of the to-be-welded part is larger than a preset threshold value;
and if the first fusion scheme is larger than the preset threshold, determining a first fusion scheme as the target fusion scheme, wherein under the first fusion scheme, the optical fiber counter shaft mechanism drives the second multi-core optical fiber to move to butt joint with a fusion joint of the first multi-core optical fiber, and after the butt joint, the fusion mechanism executes fusion operation at the butt joint.
When the processor 1001 calls a connection program of the high-density multi-core optical fiber stored in the memory 1005, the following operations are performed:
and if the second welding scheme is smaller than the preset threshold value, determining the second welding scheme as the target welding scheme, wherein under the second welding scheme, controlling the welding mechanism to operate at first power, then controlling the optical fiber pair shaft mechanism to drive the second multi-core optical fiber to move to butt joint with a welding part of the first multi-core optical fiber, and controlling the welding mechanism to operate at second power after butt joint, wherein the first power is smaller than the second power.
When the processor 1001 calls a connection program of the high-density multi-core optical fiber stored in the memory 1005, the following operations are performed:
acquiring end face images of the first multi-core optical fiber and the second multi-core optical fiber;
determining the optical fiber concentricity of the second multi-core optical fiber compared with the first multi-core optical fiber according to the end face image;
determining driving parameters of an optical fiber to shaft mechanism based on the optical fiber concentricity;
and controlling the optical fiber pair shaft mechanism to drive the second multi-core optical fiber to move based on the driving parameters so as to align the second multi-core optical fiber with the first multi-core optical fiber.
When the processor 1001 calls a connection program of the high-density multi-core optical fiber stored in the memory 1005, the following operations are performed:
extracting an optical fiber contour line in the end face image;
identifying one or more pieces of identification bit information of the second multi-core optical fiber pre-marked on the optical fiber contour line as first identification bit information;
identifying each piece of identification bit information on the first multi-core optical fiber pre-marked on the optical fiber contour line as second identification bit information;
determining a degree of deviation between one or more of the first identifying bit information and the nearest second identifying bit information;
and determining the concentricity value meeting the deviation degree as the optical fiber concentricity.
When the processor 1001 calls a connection program of the high-density multi-core optical fiber stored in the memory 1005, the following operations are performed:
determining a rotation angle and/or a movement coordinate of the pair of shaft mechanisms based on the concentricity of the optical fibers;
and determining a shaft axis parameter meeting the rotation angle and/or the movement coordinate as the driving parameter.
When the processor 1001 calls a connection program of the high-density multi-core optical fiber stored in the memory 1005, the following operations are performed:
transmitting a power-on signal to the test light source to start the test light source to transmit a test light beam with a constant light power value to the light power detector;
acquiring a received light power value generated by the light power detector based on the test light beam;
determining a power difference between the received optical power value and an optical power value of the test beam;
outputting an optical fiber fusion completion prompt if the power difference is smaller than a preset power difference threshold;
otherwise, outputting a prompt of failure of fusion welding of the optical fibers.
Based on the hardware architecture of the optical fiber connecting device based on the optical fiber communication technology, the embodiment of the connecting method of the high-density multi-core optical fiber is provided.
Referring to fig. 2, in a first embodiment, the method for connecting high-density multi-core optical fibers includes the steps of:
s10, acquiring images of parts to be welded of the first multi-core optical fiber and the second multi-core optical fiber;
in this embodiment, the optical fiber fusion splicing device includes a fixing assembly, an optical fiber pair shaft mechanism, and a fusion splicing mechanism. The fixing component is arranged on the first side of the optical fiber welding device and used for fixing the first multi-core optical fiber to be welded, and the optical fiber counter shaft mechanism is arranged on the second side of the optical fiber welding device and used for clamping the second multi-core optical fiber to be welded. The fusion splicing mechanism is disposed at any position in the optical fiber fusion splicing device where the first multi-core optical fiber and the second multi-core optical fiber can be fusion spliced, for example, at the upper side or the lower side of the contact portion between the first multi-core optical fiber and the second multi-core optical fiber, and is not limited in this embodiment. Wherein, the angle of the welding joint of the welding mechanism can be adjusted.
It is understood that the first side and the second side of the optical fiber fusion device are two sides of the optical fiber fusion device.
In this embodiment, an image acquisition module is disposed on the optical fiber fusion device, the image acquisition module acquires images of a portion to be fused of the first multi-core optical fiber and the second multi-core optical fiber, the image of the portion to be fused is characterized in that the image acquisition module acquires images of the portion to be fused of the first multi-core optical fiber and the second multi-core optical fiber, and the image of the portion to be fused includes a contour of the first multi-core optical fiber and a contour of the second multi-core optical fiber. In order to ensure the accuracy of subsequent calculation, the image of the part to be welded is a high-definition, high-contrast, distortion-free and noise-free image.
Step S20, determining the cleanliness of the parts to be welded of the first multi-core optical fiber and the second multi-core optical fiber according to the images of the parts to be welded;
in this embodiment, after the image of the portion to be welded is acquired, the acquired image of the portion to be welded is analyzed, and the cleanliness of the portion to be welded is determined and recorded. The cleanliness of the part to be welded is used for reflecting whether impurities or dirt exist in the part to be welded, and a proper control scheme is selected to weld according to the existence of the impurities or dirt.
The cleanliness is a quantized value that enables the device to determine whether the portion to be welded is clean or not, which is set in this embodiment. Optionally, for how to determine the cleanliness of the to-be-welded part, the impurity points in the to-be-welded part image can be determined based on an image analysis algorithm, and the cleanliness of the to-be-welded part can be determined according to the number, the area and/or the distribution of the impurity points.
The following description is given of how to determine the cleanliness of the portion to be welded:
in the first step, the image needs to be preprocessed before the detection of the impurity points. Pretreatment may include denoising, contrast enhancement, graying, binarization, etc. operations to better distinguish between the impurity particles and the background. The preprocessing is usually implemented by using a digital image processing method, which will not be described in the present embodiment.
And secondly, detecting impurity points in the to-be-welded part by using an image analysis algorithm. In this step, various algorithms, such as binarization, edge detection, morphology, etc., may be used to detect the foreign particles. The binarization can convert the image into a black-and-white image, the edge detection can detect the edge in the image, and the morphological operation can perform corrosion, expansion and other treatments on the image to remove or enhance specific areas in the image.
And thirdly, after detecting the impurity points, extracting the characteristics of the impurity points so as to judge the cleanliness of the parts to be welded later. The image processing technique may be used to calculate the number of pixels, area, location information, etc. characteristic of each impurity point.
And step four, judging the cleanliness of the parts to be welded according to the quantity, the area and/or the distribution of the impurity spots. The step needs to carry out parameter adjustment and algorithm optimization according to specific conditions so as to obtain a judgment result which accords with actual conditions.
It should be noted that, in implementation, appropriate algorithms and parameters are selected for specific welding locations and impurity types to achieve better detection results. Meanwhile, in order to ensure the stability and reliability of the algorithm, experiments and tests should be performed under different illumination conditions.
Step S30, selecting a target welding scheme according to the cleanliness of the part to be welded;
in this embodiment, after determining the cleanliness of the portion to be welded, a target welding scheme is selected according to the cleanliness of the portion to be welded.
Alternatively, the target welding scheme is divided into a first welding scheme and a second welding scheme. The first welding scheme is used for a scene that the welding parts of two multi-core optical fibers are tidy.
Under the first welding scheme, the optical fiber counter shaft mechanism drives the second multi-core optical fiber to move to butt joint with the welding part of the first multi-core optical fiber, and the welding mechanism executes welding operation at the butt joint part after the butt joint. And the second welding scheme is suitable for the scene that the welding parts of the two multi-core optical fibers are relatively uneven and impurities or dirt exist.
In a second fusion splice scheme, the fusion splice mechanism is operated at a first, lower power to bring the fusion splice of the fusion splice mechanism to a first temperature characterized by a temperature greater than the cladding melting point of the optical fiber but less than the fusion melting point of the fiber core. When the welding joint reaches the first temperature, the optical fiber is controlled to clamp the second multi-core optical fiber to the butt joint part of the first multi-core optical fiber by the optical fiber centering mechanism, and in the process, the welding joint is contacted with the cladding of the second multi-core optical fiber, so that impurities or dirt on the second multi-core optical fiber can be removed in a high-temperature mode. When the butt joint part of the second multi-core optical fiber and the first multi-core optical fiber is in butt joint, the welding mechanism is controlled to operate at a higher second power, so that the welding head reaches a second temperature, and the second temperature is characterized by being higher than the welding melting point of the optical fiber cores, namely, the welding mechanism welds the two multi-core optical fibers after butt joint.
The second fusion device may be provided on the upper side or the lower side of the first multi-core fiber, so that the first multi-core fiber may be cleaned at a high temperature.
Optionally, a cleanliness threshold may be preset in the selection mode of the target fusion welding scheme, and when the cleanliness of the fusion welding part is greater than the threshold, the fusion welding part of the two multi-core optical fibers is judged to be cleaner, and then the first fusion welding scheme is selected. And when the cleanliness of the welding part is smaller than the threshold value, judging that impurities or dirt exist at the welding part of the two multi-core optical fibers, and selecting a second welding scheme.
And S40, controlling the welding mechanism to execute welding operation according to the target welding scheme.
In this embodiment, after determining the corresponding target welding scheme, the welding mechanism is controlled to perform the welding operation according to the target welding scheme.
Illustratively, when performing optical fiber fusion splicing, a preset threshold value of 70 is set for judging whether the cleanliness of the end face of the optical fiber to be spliced meets the requirement. And if the cleanliness of the part to be welded is detected to be greater than 70, determining the first welding scheme as a target welding scheme. Under the first welding scheme, the optical fiber counter shaft mechanism is set to drive the second multi-core optical fiber to move to butt joint with the welding part of the first multi-core optical fiber, and the welding mechanism executes welding operation after butt joint. Wherein, the welding parameter is set to be 2 seconds of hot melting time, the welding temperature is 300 ℃, the preheating is firstly carried out for 5 seconds, and the contact between the welding joint and the butt joint part is controlled to carry out hot melting.
Illustratively, the preset threshold is also set to 70, and if it is detected that the cleanliness of the portion to be welded is less than 70, a second welding scheme is performed. Under the second welding scheme, the optical fiber counter shaft mechanism drives the second multi-core optical fiber to move to the process of butt joint with the welding part of the first multi-core optical fiber, at the moment, the welding mechanism operates at the lower first welding power of 30W, the temperature of the welding joint is controlled to be 200 ℃, the welding joint is contacted with the cladding of the second multi-core optical fiber, after the butt joint is completed, the welding mechanism operates at the higher second welding power of 70W, the temperature of the welding joint is increased to 300 ℃, preheating is firstly carried out for 5 seconds, and the welding joint is controlled to be contacted with the butt joint part for carrying out hot melting.
In the technical scheme provided by the embodiment, the cleanliness of the to-be-welded parts at the two ends of the first multi-core optical fiber and the second multi-core optical fiber which need to be welded is determined, and the corresponding target welding scheme is selected according to the cleanliness to weld, so that the welding effect is prevented from being deteriorated due to impurities in the to-be-welded parts of the multi-core optical fibers.
Referring to fig. 3, in the second embodiment, before the step S40, based on the first embodiment, the method further includes:
s50, acquiring end face images of the first multi-core optical fiber and the second multi-core optical fiber;
step S60, determining the optical fiber concentricity of the second multi-core optical fiber compared with the first multi-core optical fiber according to the end surface image;
step S70, determining driving parameters of an optical fiber to shaft mechanism based on the optical fiber concentricity;
and S80, controlling the optical fiber pair shaft mechanism to drive the second multi-core optical fiber to move based on the driving parameters so as to enable the second multi-core optical fiber to be aligned with the first multi-core optical fiber.
Optionally, in order to ensure the fusion effect of the optical fibers, the present embodiment also proposes a way to control the alignment of the optical fibers with respect to the shaft mechanism according to the concentricity of the optical fibers.
In this embodiment, the end face image is first acquired, and the end faces of the first and second multicore fibers are acquired using a high-definition imaging device. The fiber concentricity is characterized by the difference in distance between the fiber center axis and the fiber outer diameter contour center axis.
The acquired end face image is then processed using an image analysis algorithm to determine concentricity of the second multi-core fiber compared to the first multi-core fiber. In this step, various algorithms, such as edge detection, morphological operations, etc., may be used to detect the position and shape of the fiber. At the same time, the center distance and degree of deviation of the two fibers can be calculated to determine their concentricity.
And then, calculating driving parameters according to the concentricity of the optical fiber by using a preset algorithm. These parameters include speed of movement, direction, distance of movement, etc. to control the drive of the fiber to the spindle mechanism. In addition, because of the connection between the multicore fibers, it is often necessary to rotate the fibers to align the cores of the two fibers with each other, and therefore it is also necessary to include a rotation angle in the generated driving parameters, in which step parameter adjustment and algorithm optimization are required according to the specific situation to ensure control accuracy and stability.
And finally, driving the optical fiber pair shaft mechanism according to the driving parameters so as to enable the second multi-core optical fiber to move and align with the first multi-core optical fiber. In the control process, the position and state of the optical fiber need to be monitored in real time and adjusted according to the requirement so as to ensure the precision and stability.
After the optical fibers are aligned, the quality of the connection between the two optical fibers is ensured. The connection point can be tested and evaluated by using related testing instruments and equipment, and the connection point can be adjusted and optimized according to the test result so as to meet the actual application requirements. Specific testing and evaluation methods will be described in the following examples, and are not repeated here.
It will be appreciated that when the concentricity of the fibers is 0, then there is no need for alignment between the two multicore fibers.
In the technical scheme provided by the embodiment, the concentricity between the multi-core optical fibers is determined by collecting the end face images between the two multi-core optical fibers, and the optical fiber shaft aligning mechanism is driven according to the concentricity, so that the second multi-core optical fiber moves to be aligned with the first multi-core optical fiber, and the fusion effect of the optical fibers is ensured.
Referring to fig. 4, in a third embodiment, based on any one of the embodiments, the step S60 includes:
step S61, extracting an optical fiber contour line in the end face image;
step S62, identifying one or more pieces of identification bit information of the second multi-core optical fiber pre-marked on the optical fiber contour line as first identification bit information; identifying each piece of identification bit information on the first multi-core optical fiber pre-marked on the optical fiber contour line as second identification bit information;
step S63, determining a degree of deviation between one or more pieces of the first identification bit information and the nearest second identification bit information;
and step S64, determining the concentricity value meeting the deviation degree as the optical fiber concentricity.
Alternatively, for how to determine the concentricity of the optical fiber, in the present embodiment, the contour line of the optical fiber needs to be extracted first to measure the central axis of the contour line. The extraction of the contour lines may use an edge detection algorithm in image processing techniques, such as the Canny edge detection algorithm. By this algorithm edges in the image can be detected and converted into contours. The extracted contour lines will be input for the subsequent steps.
Next, pre-marked fiber identification bit information on the contour line needs to be identified to determine the concentricity of the optical fiber. The fiber identification location information is pre-marked during the fiber manufacturing process, and is typically in the form of protrusions or depressions that can be identified on the contour of the fiber end face.
In identifying the fiber identification bit information, a shape recognition algorithm in image processing techniques, such as Hough transform (Hough), may be used. The pre-marked optical fiber identification bit information can be identified through Hough transformation and is corresponding to the contour line of the optical fiber end face image.
After identifying the fiber identification bit information, the fiber concentricity needs to be measured. This can be achieved by calculating the distance difference between the fiber identification bit information. Specifically, a distance difference between one or more first identification bit information and the nearest second identification bit information may be determined, and then the distance difference is determined as the optical fiber concentricity. Such a method may be implemented using an image analysis based algorithm, such as a shape matching algorithm.
In the technical scheme provided by the embodiment, the contour line of the optical fiber can be extracted through processing the end face image, and the identification position information of the optical fiber can be identified on the contour line. Then, the concentricity of the optical fiber is determined by calculating the distance difference between the identification bit information.
Referring to fig. 5, in the fourth embodiment, after step S40, based on any embodiment, the method further includes:
step S90, transmitting a power-on signal to the light source so as to start the light source and transmit a test light beam with constant light power value to the light power detector;
step S100, obtaining a received light power value generated by the light power detector based on the test light beam;
step S110, determining a power difference between the received light power value and the light power value of the test light beam;
step S120, if the power difference is smaller than a preset power difference threshold, outputting an optical fiber connection completion prompt;
and step S130, if not, outputting an optical fiber connection failure prompt.
Optionally, in order to ensure the connection quality between two optical fibers, the connection point needs to be tested and evaluated, so this embodiment provides a method for testing and evaluating the connection result of the optical fibers. In this embodiment, the optical power detector is disposed on the first side of the optical fiber fusion device, and the test light source is disposed on the second side. The optical fiber fusion device transmits a power-on signal to start the test light source and transmits a test light beam to the optical power detector, and then obtains a received light power value generated by the optical power detector based on the test light beam. And determining the power difference between the received light power value and the light power value of the test light beam, and judging whether the power difference is smaller than a preset power difference threshold value. If the power difference is smaller than a preset power difference threshold, outputting an optical fiber connection completion prompt; otherwise, outputting the prompt of the connection failure of the optical fiber. Optionally, the optical fiber connection completion prompt may be a light of a welding success indicator on the optical fiber connection device, or output a connection success prompt text to the display.
For example, assuming that the power difference threshold is 3dBm, assuming that the power of the test beam sent by the test light source is 10dBm, then obtaining the received light power value on the light power detector to be 8dBm, determining that the power difference is 2dBm and is less than the power difference threshold of 3dBm, and outputting an optical fiber fusion completion prompt.
In the technical scheme provided by the embodiment, after two multi-core optical fibers are welded, a test light source arranged on one side of the welding device sends a test light beam to an optical power detector arranged on the other side of the welding device, and whether the result of optical fiber welding accords with expectations is judged according to the power difference between the received light power value fed back by the optical power detector and the light power value of the test light beam, so that an optical fiber welding person can determine the welding effect of the optical fibers in real time according to the test result.
Furthermore, it will be appreciated by those of ordinary skill in the art that implementing all or part of the processes in the methods of the above embodiments may be accomplished by computer programs to instruct related hardware. The computer program comprises program instructions, and the computer program may be stored in a storage medium, which is a computer readable storage medium. The program instructions are executed by at least one processor in the fiber optic connection apparatus to implement the flow steps of the embodiments of the method described above.
Accordingly, the present invention also provides a computer-readable storage medium storing a connection program of high-density multi-core optical fibers, which when executed by a processor, implements the respective steps of the connection method of high-density multi-core optical fibers as described in the above embodiments.
The computer readable storage medium may be a usb disk, a removable hard disk, a Read-Only Memory (ROM), a magnetic disk, or an optical disk, etc. which may store the program code.
It should be noted that, because the storage medium provided in the embodiments of the present application is a storage medium used to implement the method in the embodiments of the present application, based on the method described in the embodiments of the present application, a person skilled in the art can understand the specific structure and the modification of the storage medium, and therefore, the description thereof is omitted herein. All storage media used in the methods of the embodiments of the present application are within the scope of protection intended in the present application.
It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It should be noted that in the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The use of the words first, second, third, etc. do not denote any order. These words may be interpreted as names.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (10)
1. The utility model provides a connection method of high density multicore optic fibre, its characterized in that applies the optical fiber fusion device, the optical fiber fusion device is including setting up in the fixed subassembly of first side, fixed subassembly is used for fixing the first multicore optic fibre of waiting to weld, sets up the fiber counter shaft mechanism in the second side, fiber counter shaft mechanism is used for the centre gripping to wait to weld the second multicore optic fibre, drives second multicore optic fibre is along with fiber counter shaft mechanism synchronous motion, and welding mechanism, welding mechanism is used for welding first multicore optic fibre and second multicore optic fibre, the connection method of high density multicore optic fibre includes:
acquiring images of parts to be welded of the first multi-core optical fiber and the second multi-core optical fiber;
determining the cleanliness of the parts to be welded of the first multi-core optical fiber and the second multi-core optical fiber according to the images of the parts to be welded;
selecting a target welding scheme according to the cleanliness of the to-be-welded part;
and controlling the optical fiber welding device to execute welding operation according to the target welding scheme.
2. The method of connecting high-density multi-core optical fibers as set forth in claim 1, wherein the step of determining the cleanliness of the fusion-spliced portion of the first multi-core optical fiber and the second multi-core optical fiber based on the fusion-spliced portion image includes:
determining impurity points in the to-be-welded part image based on an image analysis algorithm;
and determining the cleanliness of the parts to be welded according to the number, the area and/or the distribution of the impurity points.
3. The method for connecting high-density multi-core optical fibers according to claim 1, wherein the step of selecting a target fusion splicing scheme according to the cleanliness of the fusion splicing section comprises:
determining whether the cleanliness of the to-be-welded part is larger than a preset threshold value;
and if the first fusion scheme is larger than the preset threshold, determining a first fusion scheme as the target fusion scheme, wherein under the first fusion scheme, the optical fiber counter shaft mechanism drives the second multi-core optical fiber to move to butt joint with a fusion joint of the first multi-core optical fiber, and after the butt joint, the fusion mechanism executes fusion operation at the butt joint.
4. The method for connecting a high-density multi-core optical fiber according to claim 3, wherein after the step of determining whether the cleanliness of the portion to be fusion-spliced is greater than a preset threshold, further comprising:
and if the second welding scheme is smaller than the preset threshold value, determining the second welding scheme as the target welding scheme, wherein under the second welding scheme, controlling the welding mechanism to operate at first power, then controlling the optical fiber pair shaft mechanism to drive the second multi-core optical fiber to move to butt joint with a welding part of the first multi-core optical fiber, and controlling the welding mechanism to operate at second power after butt joint, wherein the first power is smaller than the second power.
5. The method for connecting high-density multi-core optical fibers according to claim 1, wherein before the step of controlling the optical fiber fusion device to perform a fusion splicing operation in accordance with control parameters in the target fusion splicing scheme, further comprising:
acquiring end face images of the first multi-core optical fiber and the second multi-core optical fiber;
determining the optical fiber concentricity of the second multi-core optical fiber compared with the first multi-core optical fiber according to the end face image;
determining driving parameters of an optical fiber to shaft mechanism based on the optical fiber concentricity;
and controlling the optical fiber pair shaft mechanism to drive the second multi-core optical fiber to move based on the driving parameters so as to align the second multi-core optical fiber with the first multi-core optical fiber.
6. The method of connecting high-density multi-core optical fibers as set forth in claim 5, wherein said step of determining the optical fiber concentricity of said second multi-core optical fiber compared to said first multi-core optical fiber based on said end face image comprises:
extracting an optical fiber contour line in the end face image;
identifying one or more pieces of identification bit information of the second multi-core optical fiber pre-marked on the optical fiber contour line as first identification bit information;
identifying each piece of identification bit information on the first multi-core optical fiber pre-marked on the optical fiber contour line as second identification bit information;
determining a degree of deviation between one or more of the first identifying bit information and the nearest second identifying bit information;
and determining the concentricity value meeting the deviation degree as the optical fiber concentricity.
7. The method of connecting a high-density multi-core optical fiber as claimed in claim 5, wherein said step of determining a driving parameter of said pair of shaft mechanisms based on said optical fiber concentricity comprises:
determining a rotation angle and/or a movement coordinate of the pair of shaft mechanisms based on the concentricity of the optical fibers;
and determining a shaft axis parameter meeting the rotation angle and/or the movement coordinate as the driving parameter.
8. The method for connecting high-density multi-core optical fibers according to claim 1, wherein a first side of the optical fiber fusion device is provided with an optical power detector, a second side of the optical fiber fusion device is provided with a test light source, and the step of controlling the optical fiber fusion device to perform a fusion operation according to a control parameter in the target fusion scheme further comprises:
transmitting a power-on signal to the test light source to start the test light source to transmit a test light beam with a constant light power value to the light power detector;
acquiring a received light power value generated by the light power detector based on the test light beam;
determining a power difference between the received optical power value and an optical power value of the test beam;
outputting an optical fiber fusion completion prompt if the power difference is smaller than a preset power difference threshold;
otherwise, outputting a prompt of failure of fusion welding of the optical fibers.
9. An optical fiber connection device, characterized in that the optical fiber connection device comprises: memory, a processor and a connection program for a high-density multi-core optical fiber stored on the memory and executable on the processor, which when executed by the processor, realizes the steps of the connection method for a high-density multi-core optical fiber according to any one of claims 1 to 8.
10. A computer-readable storage medium, wherein a connection program of high-density multi-core optical fibers is stored on the computer-readable storage medium, which when executed by a processor, implements the steps of the connection method of high-density multi-core optical fibers according to any one of claims 1 to 8.
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