Debugging device for small-angle polarization maintaining optical fiber array

Abstract

The utility model provides a debugging device for a small-angle polarization-maintaining optical fiber array. A fixing assembly, a pre-fixing assembly and a rotation adjusting assembly are arranged in the debugging device for the polarization-maintaining optical fiber array. The fixing assembly comprises a plurality of fixing pieces, and the fixing pieces are respectively used for fixing the polarization maintaining optical fibers located in different channels; the pre-fixing assembly comprises at least a plurality of pre-fixing pieces, and the pre-fixing pieces are respectively used for pre-fixing the polarization maintaining optical fibers in different channels in the same fixing piece; the pre-fixing assembly is movably adapted to the positions of polarization maintaining optical fibers in different channels; the rotation adjusting assembly is movably adapted to different positions of polarization maintaining optical fibers of different channels. Through the combined action of the fixing assembly, the pre-fixing assembly and the rotation adjusting assembly, rotation debugging of polarization-maintaining optical fibers at different positions is achieved by deviating from the center at a small angle as far as possible, and especially rotation and debugging of the polarization-maintaining optical fibers at the two side portions of a multi-channel polarization-maintaining optical fiber array are achieved at the small angle.

Description

Technical Field

[0001] The utility model relates to the technical field of optical fiber communication, in particular to a debugging and detecting device for a small-angle polarization-maintaining optical fiber array. Background Art

[0002] Polarization-maintaining optical fiber is a special optical fiber with strong birefringence characteristics, which can maintain the polarization state of an incident light beam linearly polarized in a certain direction. The design of this optical fiber is not to eliminate the birefringence phenomenon, but to generate a stronger birefringence effect through the design of the geometric dimensions of the optical fiber, so as to eliminate the influence of stress on the polarization state of the incident light.

[0003] It plays an important role in many fields. For example, in optical fiber communication devices, polarization-maintaining optical fiber can be used to solve the polarization mode dispersion (PMD) problem in high-speed transmission devices and improve the signal transmission quality; in the field of optical fiber sensing, polarization-maintaining optical fiber can ensure that the linearly polarized direction remains unchanged, improve the coherent signal-to-noise ratio, and achieve high-precision measurement of physical quantities, and is widely used in interferometric optical fiber sensors; and so on. The market demand for polarization-maintaining optical fiber is expected to have a large increase in the next few years. With the development of new technologies and the continuous development of new products, the application fields of polarization-maintaining optical fiber will be further expanded.

[0004] However, when assembling a polarization-maintaining optical fiber array, it is necessary to rotate the optical fiber for cat-eye positioning. In the prior art, for example, a polarization-maintaining optical fiber array debugging device disclosed in CN215449674U adjusts the polarization-maintaining optical fiber by setting an adjusting component with an adjusting plate and a plurality of rotating shaft components. The number of rotating shaft components is not less than the number of first accommodating grooves for accommodating the polarization-maintaining optical fiber. By rotating the rotating shafts one by one, the polarization axes of each polarization-maintaining optical fiber are adjusted to appropriate angles one by one, so as to realize the debugging of multiple polarization-maintaining optical fibers. Further, for example, a cat-eye angle adjusting device for a multi-channel polarization-maintaining optical fiber disclosed in CN218412965U of the prior art sets a plurality of rotating mechanisms 400. The plurality of rotating mechanisms 400 are located on the side pointed to by the first end of the clamping channel, and the plurality of rotating mechanisms are arranged around the optical fiber fixture. A fiber 300 is fixedly matched between each rotating mechanism 400 and a clamping channel 203, and the rotating mechanism 400 is used to rotate the fiber 300, so that the polarization axes of multiple fibers 300 can be aligned synchronously; the cat-eye angles of multiple parallel polarization-maintaining optical fibers can be adjusted simultaneously. During operation, visual acquisition and display can be combined to ensure the accuracy of cat-eye angle adjustment, greatly improving work efficiency and adjustment accuracy.

[0005] However, those skilled in the art are aware that a polarization-maintaining fiber array often includes multiple channels of polarization-maintaining fibers, such as 8-channel, 12-channel, and 16-channel. When a polarization-maintaining fiber array debugging device based on the prior art is used to rotate and adjust each polarization-maintaining fiber, as shown in the accompanying drawings of CN215449674U and CN218412965U, due to the limitation of the debugging space, some optical fibers of the polarization-maintaining fiber array are dispersed at a certain angle. In particular, as disclosed in the accompanying drawings of CN215449674U and CN218412965U, the optical fibers on both sides are seriously deviated from the center of the polarization-maintaining fiber array. As a result, when the optical fibers are rotated, the center of the rotating optical fibers seriously deviates from the center of the optical fiber array, making it easy for the optical fibers in the portion to deviate from the originally positioned optical fibers during rotation. The grooves of the array positioning cover plate; usually, since the size of each optical fiber is more than 200 microns, which is larger than the diameter or radius of the cover plate groove, the optical fibers at different positions are likely to deviate from the groove channel of the original positioning cover plate during rotation, or get out of the groove, or further, the large curvature change can easily cause the polarization-maintaining optical fiber to be damaged during rotation, which undoubtedly increases the difficulty of debugging each optical fiber in the polarization-maintaining optical fiber array and reduces the yield rate a lot; especially when the number of channels of the polarization-maintaining optical fiber increases to 32 or 64 channels or above, the polarization-maintaining optical fibers on both sides deviate from the center or are damaged by rotation more obviously, and rotation can more easily cause this part of the polarization-maintaining optical fiber to deviate from or get out of the groove or be damaged, further increasing the difficulty of debugging; at the same time, the more channels there are, the more rotating mechanisms or rotating shafts there will be.

[0006] Therefore, how to improve the debugging problem of multi-channel polarization-maintaining fiber arrays in the prior art, especially the debugging problem of optical fibers on both sides when the number of channels is 16, 32, 64 or more, is urgently needed to be solved by those skilled in the art. Utility Model Content

[0007] The utility model provides a debugging device for a small-angle polarization-maintaining fiber array. By adjusting the angle of each polarization-maintaining fiber in the polarization-maintaining fiber array, in particular, the polarization-maintaining fibers on both sides of the polarization-maintaining fiber array are rotated and debugged at a small angle, thereby reducing the difficulty of debugging multi-channel polarization-maintaining fibers and improving the debugging accuracy of each polarization-maintaining fiber. The device prevents the polarization-maintaining fiber from deviating or falling out of a groove, or from being damaged due to curvature during rotation. In this way, the debugging yield of the polarization-maintaining fiber is improved, existing process technology is improved, and production efficiency is increased. At the same time, existing debugging equipment is simplified, the number of rotating mechanisms is reduced, and high-precision debugging is achieved.

[0008] The utility model first provides a debugging device for a small-angle polarization-maintaining optical fiber array, the debugging device comprising a polarization-maintaining optical fiber assembly component, a fixing component, a pre-fixing component and a rotation adjustment component which are arranged in sequence;

[0009] N polarization-maintaining optical fiber channels are provided in the polarization-maintaining optical fiber assembly component to accommodate different polarization-maintaining optical fibers;

[0010] The fixing component includes at least two fixing members, and the fixing members are respectively used for fixing the polarization maintaining optical fibers located in different channels.

[0011] The pre-fixing component includes at least two pre-fixing members, and the pre-fixing members are respectively used for pre-fixing the polarization maintaining optical fibers located in different channels in the same fixing member.

[0012] The pre-fixing component is movably adapted to the positions of the polarization maintaining optical fibers in different channels.

[0013] The rotation adjustment component includes at least one rotation adjustment frame, which is used for adjusting the rotation angle of the polarization maintaining optical fibers in different channels in the same fixing member; the rotation adjustment component is movably adapted to different positions of the polarization maintaining optical fibers in different channels.

[0014] The polarization maintaining optical fiber array includes at least polarization maintaining optical fibers with N channels.

[0015] Further, in detail, the polarization maintaining optical fiber assembling component includes a support and a support member and a pressing member located on the support. The support member is fixedly connected to the support, and the pressing member is movably connected to the support member.

[0016] Further, in some embodiments, the fixing component includes a fixing member base, a plurality of fixing members, a first rotation component and a second rotation component; the plurality of fixing members, the first rotation component and the second rotation component are all connected to the fixing member base through connecting members.

[0017] Further, the number of the fixing members is not less than N / n, where N represents the number of channels of the polarization maintaining optical fiber array, and n represents the number of polarization maintaining optical fibers fixed by each fixing member at the same time.

[0018] Furthermore, the pre-fixing component includes a pre-fixing base, a pre-fixing bottom plate and a pre-fixing cover plate; the pre-fixing base and the pre-fixing bottom plate are connected by a fixing connecting member; the pre-fixing cover plate is movably connected above the pre-fixing bottom plate and can rotate relative to the pre-fixing bottom plate around its connecting shaft.

[0019] Furthermore, a locking hole is provided in the middle of the pre-fixing cover plate, and the fixing of any one of the polarization maintaining optical fibers in the same fixing member is realized through the cooperation of each locking hole and a locking member.

[0020] In some other embodiments, the pre-fixing component further includes a third rotation component, and the position of the pre-fixing component relative to different polarization maintaining optical fibers can be moved through the third rotation component.

[0021] Further, the rotation adjustment assembly includes at least one rotation adjustment bracket. The rotation adjustment bracket is provided with a clamping part facing the direction of the polarization-maintaining optical fiber, and each polarization-maintaining optical fiber is clamped by the clamping part.

[0022] The rotation adjustment assembly further includes a fourth rotation assembly and a fifth rotation assembly. The fourth rotation assembly and the fifth rotation assembly are used to control different positions of the rotation adjustment assembly relative to each polarization-maintaining optical fiber to adapt to the adjustment of each polarization-maintaining optical fiber.

[0023] Furthermore, the rotation adjustment assembly includes at most 4 rotation adjustment brackets.

[0024] In the present utility model, a debugging device for a small-angle polarization-maintaining optical fiber array is provided. By setting a fixing assembly, a pre-fixing assembly, and a rotation adjustment assembly in the debugging device of the polarization-maintaining optical fiber array; the fixing assembly includes a plurality of fixing parts, and the fixing parts are respectively used to fix the polarization-maintaining optical fibers located in different channels; the pre-fixing assembly includes at least a plurality of pre-fixing parts, and the pre-fixing parts are respectively used to pre-fix the polarization-maintaining optical fibers located in different channels in the same fixing part; the pre-fixing assembly is movably adapted to the positions of the polarization-maintaining optical fibers in different channels; the rotation adjustment assembly is movably adapted to different positions of the polarization-maintaining optical fibers in different channels; through the combined action of the fixing assembly, the pre-fixing assembly, and the rotation adjustment assembly, the polarization-maintaining optical fibers at different positions are rotated and debugged with as small an angle as possible deviating from the center, so that especially the polarization-maintaining optical fibers on both sides of the multi-channel polarization-maintaining optical fiber array are rotated and debugged at a small angle; the polarization-maintaining optical fibers at different positions are rotated and debugged at a small angle; and during debugging, a group of polarization-maintaining optical fibers fixed by each fixing part is used as a fixing unit to fix the polarization-maintaining optical fibers under each fixing part, so as to improve the debugging and fixing accuracy and make it more suitable for debugging multi-channel polarization-maintaining optical fibers such as 16 channels and 62 channels, with unexpected technical effects. Description of the Drawings

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0026] Figure 1 It is a schematic diagram of the debugging device provided by the prior art when debugging a multi-channel polarization-maintaining optical fiber array;

[0027] Figure 2 It is a schematic diagram of a debugging device for a small-angle polarization-maintaining optical fiber array provided by the present utility model;

[0028] Figure 3 A top view schematic diagram of a debugging device for a small-angle polarization-maintaining fiber array provided by the present utility model;

[0029] Figure 4-1 A structural schematic diagram of a polarization-maintaining fiber assembly component of a debugging device for a small-angle polarization-maintaining fiber array provided by the present utility model;

[0030] Figure 4-2 A structural schematic of a polarization-maintaining fiber assembly component of a debugging device for a small-angle polarization-maintaining fiber array provided by the present utility model Figure 2 ;

[0031] Figure 5 A structural schematic of a fixing component of a debugging device for a small-angle polarization-maintaining fiber array provided by the present utility model Figure 1 ;

[0032] Figure 6 A structural schematic of a fixing component of a debugging device for a small-angle polarization-maintaining fiber array provided by the present utility model Figure 2 ;

[0033] Figure 7 A structural schematic diagram of a pre-fixing component of a debugging device for a small-angle polarization-maintaining fiber array provided by the present utility model;

[0034] Figure 8 A structural schematic diagram of a rotation adjustment component of a debugging device for a small-angle polarization-maintaining fiber array provided by the present utility model;

[0035] Figure 9 A cross-sectional schematic diagram of a polarization-maintaining fiber during debugging of a debugging device for a small-angle polarization-maintaining fiber array provided by the present utility model. Specific embodiments

[0036] In order to enable those skilled in the art to better understand the solution of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0037] As Figure 1 shown, it shows the situation during the rotation debugging of each polarization-maintaining fiber in a multi-channel polarization-maintaining fiber array. When rotating and debugging the polarization-maintaining fibers on both sides for 12 channels or even more channels, based on the methods in the prior art, during rotation, it seriously deviates from the center of the polarization-maintaining fiber array or the polarization-maintaining fiber is easily damaged due to large arc changes. AsFigure 1 As shown by the red dashed line in the middle, when rotating this portion of fiber using a conventional debugging device, the center of the fiber in this portion deviates from the center of the fiber array when rotating the fibers on both sides. This can easily cause the fiber in this portion to escape from the groove of the original fiber array positioning cover or deviate from the groove center during rotation. This large curvature change can also easily damage the polarization-maintaining fiber during rotational debugging. This deviation, or the curvature change, is more pronounced when targeting multiple channels, such as 32 or 64. As can be seen, the larger the number of channels, the larger the debugging angle becomes using conventional debugging methods. Figure 1 The figure only shows a schematic representation of the polarization-maintaining fibers in a multi-channel fiber array and does not represent the actual number of channels in the array. Therefore, when rotating and debugging multi-channel polarization-maintaining fiber arrays (e.g., 16-, 32-, or 64-channel arrays), it is difficult to ensure that each fiber is centered in the array during rotation, making debugging more difficult.

[0038] The utility model provides a debugging device for a small-angle polarization-maintaining optical fiber array; Figures 2 to 3 The figures are the front view and the top view of the device, respectively; it includes a polarization-maintaining fiber assembly component 10, a fixing component 20, a pre-fixing component 30 and a rotation adjustment component 40 arranged in sequence; the polarization-maintaining fiber array includes at least N channels of polarization-maintaining fibers, N ≥ 6; N polarization-maintaining fiber channels are arranged in the polarization-maintaining fiber assembly component 10 to accommodate different polarization-maintaining fibers; the fixing component 20 includes at least two fixing parts, which are respectively used to fix the polarization-maintaining fibers located in different channels; the pre-fixing component 30 includes at least two pre-fixing parts, which are respectively used to pre-fix the polarization-maintaining fibers located in different channels in the same fixing component; the pre-fixing component 30 is movably adapted to the positions of the polarization-maintaining fibers in different channels; the rotation adjustment component 40 includes at least one rotation adjustment frame, which is used to adjust the rotation angle of the polarization-maintaining fibers in different channels in the same fixing component; the rotation adjustment component 40 is movably adapted to different positions of the polarization-maintaining fibers in different channels.

[0039] Or the N-channel polarization-maintaining optical fiber defined in the present invention, N≥8, or N≥12, or N≥16, or N≥32.

[0040] In detail, such as Figures 2 to 3 As shown, a debugging device for a small-angle polarization-maintaining fiber array is provided, and each component is fixed on a substrate in sequence; the small angle defined in the utility model refers to the ability to adjust the pre-fixed component 30 and the rotation adjustment component 40 to movably adapt to the position of the polarization-maintaining fibers of different channels for a multi-channel fiber array, especially a multi-channel polarization-maintaining fiber array of 12, 16, 32, 64, etc., so that each polarization-maintaining fiber on both sides of the multi-channel polarization-maintaining fiber array deviates from the polarization-maintaining fiber axis position as small an angle as possible, combined with Figure 1, that is, each polarization-maintaining optical fiber on both sides is rotated as much as possible at a small angle deviating from the position of the axis of each polarization-maintaining optical fiber, so that each polarization-maintaining optical fiber can be rotated at a small angle.

[0041] Furthermore, it further includes a polarization-maintaining optical fiber end face monitoring device 50. The rotation angle information of each polarization-maintaining optical fiber is obtained in real time through the polarization-maintaining optical fiber end face monitoring device 50, and the rotation angle information is fed back to the rotation adjustment component 40 in real time. The rotation level debugging of each polarization-maintaining optical fiber is realized through the interaction between the rotation adjustment component 40 and the polarization-maintaining optical fiber end face monitoring device 50. As Figure 9 shown, the rotation information of the end face of each polarization-maintaining optical fiber is obtained through the polarization-maintaining optical fiber end face monitoring device 50, such as the angles of different polarization-maintaining optical fibers. Different rotation angles of each polarization-maintaining optical fiber are shown in the figure. This information is fed back to the rotation adjustment component 40 in real time to adjust the rotation angle of each polarization-maintaining optical fiber, thereby realizing the rotation leveling of each polarization-maintaining optical fiber.

[0042] More specifically, the polarization-maintaining optical fiber array includes at least N-channel polarization-maintaining optical fibers, N≥8, and N is an even integer, such as 12, 16, 32, 64, etc.; as Figure 1 shown in the polarization-maintaining optical fiber array, it shows a polarization-maintaining optical fiber including N channels, Figure 9 showing a case of a polarization-maintaining optical fiber array including 12 polarization-maintaining optical fibers.

[0043] In some embodiments, in combination with Figure 4-1 and Figure 4-2 , the polarization-maintaining optical fiber assembly component 10 includes a support 103 and a support member 102 and a pressing member 101 located on the support 103. The support member 102 is fixedly connected to the support 103, and the pressing member 101 is movably connected to the support member 102, such as a threaded screw connection. By controlling the pressing member 101 to move along its axial direction, the fiber cover plate and the fiber base of the polarization-maintaining optical fiber array are tightly fixed. Figure 4-2 shows a cross-sectional structural schematic diagram when the pressing member 101 presses the fiber cover plate and the fiber base; the polarization-maintaining optical fiber is accommodated between the fiber cover plate and the fiber base; N polarization-maintaining optical fiber channels are provided in the polarization-maintaining optical fiber assembly component 10, Figure 4-2 showing 12 polarization-maintaining optical fiber channels to accommodate the polarization-maintaining optical fibers corresponding to the channels of the polarization-maintaining optical fiber array.

[0044] Furthermore, the fixing component 20 includes at least 2 fixing members, and the fixing members are respectively used to fix the polarization-maintaining optical fibers located in different channels. As Figure 5 shown, it shows that the fixing component 20 includes 3 fixing members 211; each fixing member fixes at least n polarization-maintaining optical fibers in different channels at the same time; the fixing member 211 is connected to the fixing member base 212 through a connecting member and can move along the axis direction of the fixing member 211. Based on this, the number of fixing members is defined to be not less than N / n to realize the adjustment and fixing of each polarization-maintaining optical fiber.

[0045] Certainly, in some other embodiments, the number of polarization-maintaining optical fibers fixed by each fixing member may be different. That is, the n polarization-maintaining optical fibers of different fixing members may be 3, 4, 5... n and other various situations respectively, which are also within the protection scope of the present utility model. It is determined according to the number of channels of the multi-channel polarization-maintaining optical fiber array, and those skilled in the art can make different adjustments according to specific situations.

[0046] Meanwhile, in the present utility model, it is beneficial to limit that the number of fixing members in the fixing assembly is adjustable, and the number of fixing members is selected according to the number of channels of different polarization-maintaining optical fibers.

[0047] Furthermore, it is limited that the fixing assembly 20 includes N / 4 fixing members 211 to adapt to the polarization-maintaining optical fiber array with N channels. As Figure 5 shown, it shows that the fixing assembly 20 includes 3 fixing members 211, and each fixing member 211 fixes at least 4 polarization-maintaining optical fibers with different channels simultaneously (certainly, in other embodiments, the number of polarization-maintaining optical fibers of each fixing member may be different); the fixing member 211 is connected to the fixing member base 212 through a connecting member. Multiple polarization-maintaining optical fibers with different channels located at the bottom of the fixing member are fixed by the same fixing member 211 simultaneously; different fixing members 211 may fix different numbers of polarization-maintaining optical fibers during fixing, and the fixing timing controlled each time is different. Certainly, the number of polarization-maintaining optical fibers fixed between different fixing members 211 may also be the same or different.

[0048] As Figure 5 shown, the fixing assembly 20 further includes a first rotating assembly 201 and a second rotating assembly 202. The first rotating assembly 201 is used to move the fixing assembly 20 along the axis direction of the polarization-maintaining optical fiber, and the second rotating assembly 202 is used to move the fixing assembly 20 along the direction perpendicular to the axis direction of the polarization-maintaining optical fiber; thereby controlling different positions of the fixing assembly 20 relative to different polarization-maintaining optical fibers, adjusting different positions of the fixing assembly 20 relative to the substrate, realizing the fixing of the polarization-maintaining optical fibers at different positions, especially the fixing of the polarization-maintaining optical fiber arrays on both sides of the multi-channel polarization-maintaining optical fiber array, and adapting to the polarization-maintaining optical fibers with different channel numbers in such a control manner and adjusting the relative position of the fixing assembly 20.

[0049] Further, by controlling the different positions of the fixing component 20 relative to the polarization-maintaining fiber array through the first rotating component 201 and the second rotating component 202, the debugging of the polarization-maintaining fibers in different channels is realized. Of course, the control strokes of the first rotating component 201 and the second rotating component 202 are determined based on the number of channels in the polarization-maintaining fiber array, so as to ensure that all the fixing members 211 can completely fix all the polarization-maintaining fibers. When the number of channels in the polarization-maintaining fiber array is different, the control strokes of the first rotating component 201 and the second rotating component 202 are also different, which can be determined by the number of polarization-maintaining fibers in different channels and the spacing between adjacent polarization-maintaining fibers. In this regard, it is easy to implement, and the present utility model does not make specific stroke limitations.

[0050] The first rotating component 201 and the second rotating component 202 are respectively connected to the fixing member 211 through a fixed rotating table to achieve a fixed connection, as Figure 5 shown.

[0051] Further, as Figure 6 shown, the fixing component 20 includes N / n fixing members 211, where N represents the number of channels in the polarization-maintaining fiber array, and n represents the number of polarization-maintaining fibers fixed by each fixing member at the same time. More specifically, the figure shows that each fixing member fixes at least 4 polarization-maintaining fibers at the same time. Assuming that the polarization-maintaining fiber array has 12 channels, at least 3 fixing members 211 need to be provided. The fixing members 211 are connected to the fixing component 20 through connecting members. By controlling the moving stroke of any fixing member 211 along its axial direction and controlling the end position of the fixing member 211 facing the polarization-maintaining fiber, the fixing of any 4 polarization-maintaining fibers can be achieved at the same time. It can be known that the fixing states of the multiple polarization-maintaining fibers controlled by different fixing members 211 can be different, such as fixed or not fixed, and the control state of each fixing member 211 is independent and individually adjustable.

[0052] At the same time, as Figure 7 shown, the pre-fixing component 30 includes a pre-fixing base 301, a pre-fixing bottom plate 303, and the pre-fixing base 301 and the pre-fixing bottom plate 303 are connected through a fixed connecting member 302; a pre-fixing cover plate 304 is movably connected to the pre-fixing bottom plate 303 and can rotate relative to the pre-fixing bottom plate 303 around its connecting shaft.

[0053] At least n arc-shaped grooves are provided in the middle of the pre-fixing bottom plate **********303, and the number of arc-shaped grooves is the same as the number of polarization-maintaining fibers fixed by each fixing member, as Figure 7 shown, so as to realize the fixing of the polarization-maintaining fibers to be fixed in the same fixing member.

[0054] Further, a locking hole 306 is provided in the middle of the pre-fixed cover plate 304. The number of locking holes 306 is the same as that of the arc-shaped grooves of the pre-fixed bottom plate 303. The fixation of any one of the n polarization-maintaining optical fibers in the same fixing member is achieved through the cooperation of each locking hole 306 and a locking member (not shown in the figure). In this way, the fixation of the n polarization-maintaining optical fibers in each fixing member is achieved.

[0055] Meanwhile, further, the pre-fixed assembly 30 further includes a third rotating assembly 305. The position of the pre-fixed assembly 30 relative to different polarization-maintaining optical fiber directions can be moved through the third rotating assembly 305. This position is the position perpendicular to the axis direction of the polarization-maintaining optical fiber. The relative position of the pre-fixed assembly 30 can be controlled so that the pre-fixed assembly 30 can be movably adapted to the positions of different-channel polarization-maintaining optical fibers, especially adapted to the n polarization-maintaining optical fibers that need to be fixed by different fixing members. When assembling and debugging a multi-channel polarization-maintaining optical fiber array, by adjusting the position of the pre-fixed assembly 30 relative to different polarization-maintaining optical fibers, each polarization-maintaining optical fiber can be debugged at a smaller deflection angle, reducing the angle of the polarization-maintaining optical fibers at different positions deviating from the central axis of the entire polarization-maintaining optical fiber array, making the deflection angle smaller, so as to achieve the debugging of a small-angle polarization-maintaining optical fiber array.

[0056] Further in combination Figure 8 shows a rotation adjustment assembly 40, including at least one rotation adjustment frame 403. A clamping portion 4031 is provided on the rotation adjustment frame 403 in the direction towards the polarization-maintaining optical fiber. Each polarization-maintaining optical fiber is clamped through the clamping portion 4031. The rotation angle of the polarization-maintaining optical fibers in different channels in the same fixing member 211 is adjusted through the rotation adjustment frame 403, so as to achieve the debugging of each polarization-maintaining optical fiber. The rotation adjustment assembly 40 is movably adapted to different positions of different-channel polarization-maintaining optical fibers. Specifically, one end of the rotation adjustment frame 403 is rotatably fixed on the rotation adjustment base 401, and the other end is connected to each polarization-maintaining optical fiber that needs to be adjusted or debugged. After adjusting the angle of each polarization-maintaining optical fiber, the fixation of a certain polarization-maintaining optical fiber is achieved through the action of the corresponding locking hole 306 and the locking member in the pre-fixed assembly 30. After adjusting the corresponding number of polarization-maintaining optical fibers, it can be moved in the direction perpendicular to the axis of the polarization-maintaining optical fiber array, so as to be adapted to the rotation debugging of different polarization-maintaining optical fibers under different fixing members.

[0057] Of course, Figure 8A case including a rotary adjustment frame 403 is shown. Of course, according to the number of polarization-maintaining optical fibers under the same fixing member, it is defined to include n rotary adjustment frames 403, where n is not greater than 4. For example, it is defined to include 2 rotary adjustment frames 403 or 3 rotary adjustment frames 403. The debugging efficiency can be improved by multiple rotary adjustment frames 403. Of course, one rotary adjustment frame 403 can be set to reduce the space and manufacturing cost of the device. At the same time, debugging one polarization-maintaining optical fiber at a time can improve the debugging accuracy.

[0058] Further, the rotary adjustment assembly 40 further includes a fourth rotary assembly 402 and a fifth rotary assembly 404. The fourth rotary assembly 402 and the fifth rotary assembly 404 are used to control the different positions of the rotary adjustment assembly 40 relative to each polarization-maintaining optical fiber to adapt to the adjustment of each polarization-maintaining optical fiber and the adjustment of polarization-maintaining optical fibers with different lengths. This is beneficial to the present utility model.

[0059] During rotary debugging, after a certain polarization-maintaining optical fiber is fixed by the pre-fixing assembly 30, the fixed polarization-maintaining optical fiber is removed from one end of the rotary adjustment frame 403 to fix the next polarization-maintaining optical fiber, and so on, to achieve the one-by-one fixation of n polarization-maintaining optical fibers under the same fixing member.

[0060] After the one-by-one fixation of n polarization-maintaining optical fibers under the same fixing member is completed, the polarization-maintaining optical fibers are fixed under a set of fixing members 211 by the corresponding fixing members 211 in the fixing assembly 20; and so on, to fix the polarization-maintaining optical fibers that need to be fixed by other fixing members 211. After all the polarization-maintaining optical fibers under all the fixing members 211 are fixed, control the dispensing and exposure device, as Figures 2 to 3 shown, to achieve the debugging and assembly of the multi-channel polarization-maintaining optical fiber array and complete the assembly of the multi-channel polarization-maintaining optical fiber array.

[0061] At the same time, in some other embodiments, the present utility model provides a debugging method for a small-angle polarization-maintaining optical fiber array. This method is based on the debugging device for a small-angle polarization-maintaining optical fiber array described in any of the foregoing embodiments. Specifically, it includes the following steps:

[0062] (1) Provide a polarization-maintaining optical fiber assembly component 10, a fixing component 20, a pre-fixing component 30, and a rotary adjustment component 40, and set them in sequence;

[0063] (2) Pass N polarization-maintaining optical fibers through the optical fiber assembly component 10 and the fixing component 20 in sequence;

[0064] (3) Determine the number of fixing members required in the fixing component 20;

[0065] (4) Obtain the number of arc-shaped grooves in the pre-fixing component 30 based on the determined number of fixing parts; and provide fixing parts with this number of arc-shaped grooves.

[0066] (5) Clamp each polarization-maintaining optical fiber in the same fixing part by the pre-fixing component 30 and the rotation adjustment component 40 respectively, and debug its state; when each polarization-maintaining optical fiber is debugged to meet the requirements, pre-fix it through the pre-fixing component 30.

[0067] (6) After each polarization-maintaining optical fiber in the same fixing part is pre-fixed, fix each group of polarization-maintaining optical fibers through the corresponding fixing part; complete the fixing of the next group of polarization-maintaining optical fibers under the same fixing part.

[0068] Further, it further includes step (7), in which steps (5) to (6) are repeated to realize the debugging and fixing of each polarization-maintaining optical fiber in the multi-channel polarization-maintaining optical fiber array.

[0069] Further, in step (3), judge the number of fixing parts required in the fixing component 20; more specifically, calculate the number of fixing parts equal to N / n according to the number of polarization-maintaining optical fibers n fixed by each fixing part and the total number of channels N of the multi-channel polarization-maintaining optical fiber array.

[0070] Of course, the number of fixing parts in step (3) described above is only an example. It is also possible to define that the number of polarization-maintaining optical fibers n fixed by each fixing part is different, including, for example, n1, n2, n3, etc., and n1≠n2≠n3, such as 3, 4, 5 polarization-maintaining optical fibers with different numbers, which are also within the protection scope of the present invention.

[0071] In step (4), determine the number of arc-shaped grooves in the pre-fixing component 30 according to the number of polarization-maintaining optical fibers n fixed by each fixing part determined in step (3), and the number of arc-shaped grooves is not less than the number of polarization-maintaining optical fibers n fixed by each fixing part.

[0072] Furthermore, when the number of polarization-maintaining optical fibers n fixed by each fixing part is different, the number of arc-shaped grooves is equal to the maximum value of the number of polarization-maintaining optical fibers fixed by each fixing part, so as to be able to accommodate the debugging of all polarization-maintaining optical fibers under the same fixing part.

[0073] Further, in step (5), any polarization maintaining optical fiber in the same fixing member is clamped by the pre-fixing assembly 30 and the rotation adjustment assembly 40 respectively, and its state is adjusted; when any polarization maintaining optical fiber is adjusted to meet the requirements, it is pre-fixed by the pre-fixing assembly 30 corresponding to the polarization maintaining optical fiber; more specifically, any polarization maintaining optical fiber in the same fixing member is clamped by the rotation adjustment assembly 40, and its state is adjusted by rotation to meet the requirements of the target state, and it is pre-fixed through the locking hole corresponding to the channel in the pre-fixing assembly 30 corresponding to the polarization maintaining optical fiber; after the first polarization maintaining optical fiber is adjusted, the other polarization maintaining optical fibers under the same fixing member are adjusted, and are pre-fixed again through the locking hole corresponding to the channel in the pre-fixing assembly 30; and so on, until the pre-fixation of different polarization maintaining optical fibers under the same fixing member is completed.

[0074] In step (6), after step (5), when each polarization maintaining optical fiber in the same fixing member is pre-fixed, each group of polarization maintaining optical fibers is fixed by the fixing member corresponding to the channel, so that each polarization maintaining optical fiber is fixed under the fixing member. At this time, the fixing of a group of polarization maintaining optical fibers under one fixing member is completed.

[0075] After the pre-fixation of the polarization maintaining optical fibers under one fixing member is completed, all the polarization maintaining optical fibers under the fixing member are removed, and the other polarization maintaining optical fibers to be fixed are placed on the pre-fixing assembly 30 and the rotation adjustment assembly 40, and the same fixing operation is performed; and so on, steps (5) to (6) are repeated, and through multiple pre-fixation and fixing operations, the polarization maintaining optical fibers under each fixing member can be fixed.

[0076] When each polarization maintaining optical fiber under each fixing member is fixed, the debugging and fixing of each polarization maintaining optical fiber in the entire multi-channel polarization maintaining optical fiber array can be realized.

[0077] In step (7), when repeating step (5), step (5) also includes moving the relative positions of the pre-fixing assembly 30 and the rotation adjustment assembly 40 for different polarization maintaining optical fibers, so that the pre-fixing assembly 30 and the rotation adjustment assembly 40 are adapted to the polarization maintaining optical fibers at different positions. To realize the adjustment of any polarization maintaining optical fiber in the multi-channel polarization maintaining optical fiber.

[0078] During debugging, the present invention fixes the polarization maintaining optical fibers under each fixing member with a group of polarization maintaining optical fibers covered and fixed by each fixing member as a fixing unit. After the fixing of multiple polarization maintaining optical fibers under one fixing member is completed, the polarization maintaining optical fibers of the next fixing member are fixed, so as to improve the debugging and fixing accuracy between different optical fiber components, making the device of the present invention more suitable for debugging multi-channel polarization maintaining optical fibers such as 16 and 62, and having unexpected technical effects.

[0079] In a debugging device for a small-angle polarization-maintaining optical fiber array provided by the present utility model, it is first proposed to fix polarization-maintaining optical fibers at different positions respectively through a plurality of fixing members. A pre-fixing assembly and a rotation adjustment assembly provided in cooperation with the fixing members are used to pre-fix each group of polarization-maintaining optical fibers under the same fixing member, so as to realize the fixing of each polarization-maintaining optical fiber under multiple fixing members. During this process, the rotation information of the end face of each polarization-maintaining optical fiber, such as the angles of different polarization-maintaining optical fibers, is obtained in real time through a polarization-maintaining optical fiber end face monitoring device, and this information is fed back to the rotation adjustment assembly in real time to adjust the rotation angle of each polarization-maintaining optical fiber, thereby realizing the fixing of each polarization-maintaining optical fiber. After each polarization-maintaining optical fiber under each fixing member is fixed, the polarization-maintaining optical fiber array is cured through a dispensing and exposure device; and so on, to realize the fixing and curing operations of all polarization-maintaining optical fibers. By controlling the relative positions of the pre-fixing assembly and the rotation adjustment assembly, the polarization-maintaining optical fibers at different positions are rotated and debugged with a small angle deviating from the center as much as possible, so that the polarization-maintaining optical fibers on both sides of the multi-channel polarization-maintaining optical fiber array are debugged at a small angle.

[0080] The above specific embodiments do not constitute a limitation to the protection scope of the present utility model. Those skilled in the art should understand that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A debugging device for a small-angle polarization-maintaining fiber array, characterized in that, The debugging device includes a polarization-maintaining fiber assembly component, a fixing component, a pre-fixing component, and a rotation adjustment component arranged in sequence; The polarization-maintaining fiber assembly component is provided with N polarization-maintaining fiber channels to accommodate different polarization-maintaining fibers; The fixing component includes at least two fixing members, and the fixing members are respectively used to fix the polarization-maintaining fibers located in different channels; The pre-fixing component includes at least two pre-fixing members, and the pre-fixing members are respectively used to pre-fix the polarization-maintaining fibers located in different channels in the same fixing member; The pre-fixing component is movably adapted to the positions of the polarization-maintaining fibers in different channels; The rotation adjustment component includes at least one rotation adjustment frame for adjusting the rotation angle of the polarization-maintaining fibers in different channels in the same fixing member; the rotation adjustment component is movably adapted to different positions of the polarization-maintaining fibers in different channels.

2. The debugging device for a small-angle polarization-maintaining fiber array according to claim 1, characterized in that The polarization-maintaining fiber assembly component includes a support and a support member and a pressing member located on the support. The support member is fixedly connected to the support, and the pressing member is movably connected to the support member.

3. The debugging device for a small-angle polarization-maintaining fiber array according to claim 1 or 2, characterized in that, The fixing component includes a fixing member base, several fixing members, a first rotation component, and a second rotation component; several of the fixing members, the first rotation component, and the second rotation component are all connected to the fixing member base through connecting members.

4. The debugging device for a small-angle polarization-maintaining fiber array according to claim 3, characterized in that, The number of the fixing members is not less than N / n, where N represents the number of channels of the polarization-maintaining fiber array, and n represents the number of polarization-maintaining fibers fixed by each fixing member at the same time.

5. A debugging device for a small-angle polarization-maintaining fiber array according to any one of claims 1 to 2, characterized in that The pre-fixing component includes a pre-fixing base, a pre-fixing bottom plate, and a pre-fixing cover plate; the pre-fixing base and the pre-fixing bottom plate are connected by a fixing connecting member; the pre-fixing cover plate is movably connected above the pre-fixing bottom plate and can rotate relative to the pre-fixing bottom plate around its connecting shaft.

6. The debugging device for a small-angle polarization-maintaining fiber array according to claim 5, characterized in that A locking hole is provided in the middle of the pre-fixing cover plate, and the fixation of any one of the polarization-maintaining fibers in the same fixing member is achieved through the cooperation of each locking hole and a locking member.

7. The debugging device for a small-angle polarization-maintaining fiber array according to claim 6, characterized in that, The pre-fixing component further includes a third rotation component, and the position of the pre-fixing component relative to different polarization-maintaining fibers can be moved through the third rotation component.

8. The debugging device for a small-angle polarization-maintaining fiber array according to claim 6 or 7, characterized in that, The rotation adjustment component includes at least one rotation adjustment frame, and a clamping portion is arranged on the rotation adjustment frame in the direction facing the polarization-maintaining fiber, and each polarization-maintaining fiber is clamped through the clamping portion.

9. The debugging device for a small-angle polarization-maintaining fiber array according to claim 8, characterized in that, The rotation adjustment component further includes a fourth rotation component and a fifth rotation component, and the different positions of the rotation adjustment component relative to each polarization-maintaining fiber are controlled through the fourth rotation component and the fifth rotation component to adapt to the adjustment of each polarization-maintaining fiber.

10. The debugging device for a small-angle polarization-maintaining fiber array according to claim 8, characterized in that, The rotation adjustment component includes at most 4 rotation adjustment frames.

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