Optical fiber plugging structure and system

Abstract

The present invention relates to the field of optical modules, and specifically to an optical fiber plugging structure and system of an optical module. The optical fiber plugging structure includes a pressing block, and an optical fiber plugging channel arranged in a shell and accommodating a ribbon optical fiber / optical fiber bundle arranged transversely in an array. The optical fiber plugging channel is provided with at least one fiber splitter for squeezing the ribbon optical fiber / optical fiber bundle arranged transversely in an array to both sides. The optical fiber plugging channel, the pressing block, and the shell are all made of conductive materials. The pressing block is pressed against the optical fiber plugging channel and connected to the optical fiber plugging channel and the shell. The present invention achieves the plugging of optical fibers by squeezing and pressing the optical fiber ribbon, so that each optical fiber fits closely, reduces gaps, prevents EMI leaking from the optical fiber cross section, effectively reduces the size of the gap caused by the optical fiber bundle / ribbon optical fiber, and ensures the safety of the optical fiber at the same time.

Description

Technical Field

[0001] The present invention relates to the field of optical modules, and in particular to an optical fiber plugging structure and system based on an optical module. Background Art

[0002] With the advancement of informatization and intelligence in modern society, the requirements for information transmission systems are getting higher and higher, and the demand for data centers is also increasing. The requirements of data centers and base stations for high speed and low energy consumption have spawned various transmission modules, especially optical modules. Due to the superiority of optical modules, they have also developed rapidly, and the speed has developed to 10G, 25G, 100G and even 400G.

[0003] AOC (active optical cable) is a commonly used optical module for interconnection in data centers. Two hot-swappable active optical modules are connected through an optical cable. The optical fiber in the optical cable needs to be inserted into the module through the tail of the module and coupled with the optical path on the PCBA through MOI (Mechanical optical interface).

[0004] As the speed of optical modules increases, higher frequency signals will radiate smaller wavelength electromagnetic waves, which will cause electromagnetic interference to the outside world. Therefore, the industry has set strict standards for the electromagnetic compatibility of optical modules. However, the higher the speed of optical modules, the more likely they are to have electromagnetic compatibility problems.

[0005] For example, for 100G AOC, in the QSFP optical module, the 100G rate is achieved through four 25G channels. The wavelength of the 25Ghz electronic wave is 12mm, and one-fourth of it is 3mm. If there is a 3mm long seam on the outer shell of the optical film block, the EMI leakage will be very serious. However, many optical modules use 12 optical paths and adopt the form of optical fiber ribbons. The width of the 12X1 optical fiber ribbon is about 3mm. How to block the cross-sectional electromagnetic interference signal passing through the ribbon optical fiber is a difficult problem. In addition, in addition to 100G AOC, it can also be applied to AOC products of other frequencies, and is not limited to AOC, and can be applied to quick-plug modules (QSFP).

[0006] At the same time, in the actual assembly of optical modules, the optical cable inside the module needs to have a certain length margin, so EMI leakage through the ribbon optical fiber is not easy to block.

[0007] How to seal optical fibers to prevent EMI leakage is one of the issues that technicians in this field have been focusing on. Summary of the invention

[0008] The technical problem to be solved by the present invention is to provide an optical fiber plugging structure of an optical module to solve the problem of optical fiber EMI leakage in view of the above-mentioned defects of the prior art.

[0009] The technical problem to be solved by the present invention is to provide an optical fiber plugging system for an optical module to solve the problem of optical fiber EMI leakage in view of the above-mentioned defects of the prior art.

[0010] The technical solution adopted by the present invention to solve its technical problem is: to provide an optical fiber plugging structure, which is arranged in an optical module that can lead out a ribbon optical fiber / optical fiber bundle, and the optical module includes a shell, and the optical fiber plugging structure includes a pressing block, and an optical fiber plugging channel arranged in the shell and accommodating the ribbon optical fiber / optical fiber bundle arranged laterally in the array, and at least one fiber splitter is arranged in the optical fiber plugging channel to squeeze the ribbon optical fiber / optical fiber bundle arranged laterally in the array to both sides, and the optical fiber plugging channel, the pressing block and the shell are all made of conductive materials, and the pressing block is pressed against the optical fiber plugging channel and connected to the optical fiber plugging channel and the shell.

[0011] Among them, a preferred solution is: the optical fiber blocking structure also includes an optical fiber placement plane arranged at the bottom, and the fiber splitting component includes a blocking plate fitted on the optical fiber placement plane, and the blocking plate is arranged along the longitudinal direction of the optical fiber placement plane.

[0012] Among them, a preferred solution is that: the fiber splitting component further includes protrusions arranged at both ends of the blocking plate, and the pressing block is squeezed and arranged between the two protrusions and respectively has an interference fit with the two protrusions.

[0013] Among them, the preferred solution is: a plurality of parallel blocking plates are provided on the optical fiber placement plane.

[0014] Among them, a preferred solution is that the pressing block is made of flexible material.

[0015] Among them, the preferred solution is: the optical module also includes a fiber optic lower clamp block arranged in the shell, the fiber optic blocking channel is arranged in the middle of the fiber optic lower clamp block, the optical module also includes a fiber optic upper clamp block fittedly arranged at the rear end of the fiber optic lower clamp block, the fiber optic lower clamp block and the fiber optic upper clamp block are both made of conductive materials; and the pressing block is extruded on the fiber optic blocking channel of the fiber optic lower clamp block, and is connected to the fiber optic lower clamp block and the shell.

[0016] Among them, the preferred solution is: the optical module is an optical module, the shell of the optical module includes a base and an upper cover, the optical fiber lower clamp is arranged on the base, the optical fiber upper clamp fixes the optical fiber lower clamp to the base, the pressing block is fitted on the upper cover, and the pressing block is pressed against the optical fiber lower clamp when the base and the upper cover are installed.

[0017] Among them, a preferred solution is: the pressing block is bonded to the upper cover through a conductive adhesive.

[0018] Among them, the preferred solution is: the depth of the optical fiber blocking channel matches the diameter of a single optical fiber of the optical fiber ribbon / optical fiber bundle, the optical fiber lower clamp and the base both include limiting surfaces flush with the two side end faces of the optical fiber blocking channel, and the pressing block is pressed against the optical fiber blocking channel and fits onto the limiting surfaces of the optical fiber lower clamp and the base.

[0019] The technical solution adopted by the present invention to solve its technical problems is: to provide a fiber optic plugging system, the fiber optic plugging structure is arranged in an optical module that can lead out a ribbon optical fiber / fiber bundle, the optical module includes a shell, the fiber optic plugging system includes a pressing block, a fiber optic plugging channel arranged in the shell, and a ribbon optical fiber / fiber bundle, at least one fiber splitter is arranged in the fiber optic plugging channel, the fiber splitter squeezes the ribbon optical fiber / array laterally arranged fiber bundle to both sides, the ribbon optical fiber / array laterally arranged fiber bundle is arranged in the fiber optic plugging channel in a coordinated manner; and the fiber optic plugging channel, the pressing block, and the shell are all made of conductive materials, the pressing block is arranged on the fiber optic plugging channel and squeezes the surface of the optical fiber, and is connected to the fiber optic plugging channel and the shell.

[0020] The beneficial effect of the present invention is that, compared with the prior art, the present invention achieves the sealing of the optical fiber by squeezing and pressing the optical fiber bundles arranged transversely in the optical fiber ribbon / array, so that each optical fiber fits closely, reduces gaps, prevents EMI leakage from the optical fiber cross-section, effectively reduces the size of the gaps caused by the optical fiber bundles arranged transversely in the optical fiber ribbon / array, and ensures the safety of the optical fiber. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0022] Figure 1 It is a schematic diagram of the structure of the optical fiber plugging structure of the present invention without optical fiber;

[0023] Figure 2 It is a structural schematic diagram of the optical fiber plugging structure of the present invention when the optical fiber is connected;

[0024] Figure 3 It is a schematic diagram of the structure of the optical fiber plugging structure of the present invention when a pressing block is placed;

[0025] Figure 4 It is a schematic diagram of the structure of the fiber splitting component of the present invention;

[0026] Figure 5 is a schematic diagram of the cross-sectional structure of the optical fiber plugging structure of the present invention;

[0027] Figure 6 It is a schematic diagram of the exploded structure of the optical module of the present invention;

[0028] Figure 7 It is a structural schematic diagram of the base of the present invention;

[0029] Figure 8 It is a structural schematic diagram of the upper cover of the present invention. DETAILED DESCRIPTION

[0030] Now, the preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0031] like Figures 1 to 5 As shown, the present invention provides a preferred embodiment of a fiber optic plugging structure.

[0032] A fiber plugging structure is provided in an optical module that can lead out a ribbon optical fiber / fiber bundle 200. The optical module includes a housing. The fiber plugging structure includes a pressing block 120 and a fiber plugging channel 110 that is provided in the housing and accommodates a ribbon optical fiber / array of laterally arranged fiber bundles 200. The fiber plugging channel 110 is provided with at least one fiber splitter 111 that squeezes the ribbon optical fiber / array of laterally arranged fiber bundles 200 to both sides. The fiber plugging channel 110, the pressing block 120, and the housing are all made of conductive materials. The pressing block 120 is pressed against the fiber plugging channel 110 and connected to the fiber plugging channel 110 and the housing. The ribbon optical fiber / array of laterally arranged fiber bundles 200 are referred to as optical fibers in the following description.

[0033] Furthermore, a fiber optic plugging system for an optical module is provided, the optical module includes a shell, the fiber optic plugging system includes a pressing block 120, a fiber optic plugging channel 110 arranged in the shell, and a plurality of optical fibers arranged in an array in the fiber optic plugging channel 110, at least one fiber splitter 111 is arranged in the fiber optic plugging channel 110, the fiber splitter 111 squeezes the ribbon optical fiber / array laterally arranged optical fiber bundle 200 to both sides, the ribbon optical fiber / array laterally arranged optical fiber bundle 200 is cooperatively arranged in the fiber optic plugging channel 110; and, the fiber optic plugging channel 110, the pressing block 120, and the shell are all made of conductive materials, the pressing block 120 is arranged on the fiber optic plugging channel 110 and squeezes the surface of the optical fiber, and is connected to the fiber optic plugging channel 110 and the shell.

[0034] Specifically, the array of the ribbon optical fiber / array transversely arranged optical fiber bundle 200 is mainly arranged in a row on the optical fiber plugging channel 110, such as the ribbon optical fiber is arranged transversely on the optical fiber plugging channel 110, or the optical fiber bundle is arranged transversely in a single row on the optical fiber plugging channel 110, and the ribbon optical fiber / array transversely arranged optical fiber bundle 200 squeezes each other in the horizontal direction. At the same time, a fiber splitter 111 is arranged between the ribbon optical fiber / array transversely arranged optical fiber bundle 200 to further increase the degree of squeezing of the ribbon optical fiber / array transversely arranged optical fiber bundle 200 in the horizontal direction; and the pressing block 120 is pressed on the upper surface of the ribbon optical fiber / array transversely arranged optical fiber bundle 200 to adhere the optical fiber to the surface of the optical fiber plugging channel 110, so as to achieve the plugging of the optical fiber cross section of the ribbon optical fiber / array transversely arranged optical fiber bundle 200, thereby reducing the leakage of EMI of the optical cable 300 entering the module end.

[0035] In this embodiment, the optical fiber blocking channel 110, the pressing block 120, and the shell are all made of conductive materials, so that the pressing block 120 and the optical fiber blocking channel 110 can be electrified, and the pressing block 120 and the shell can be electrified.

[0036] Furthermore, the pressing block 120 is made of a flexible material. When the pressing block 120 is pressed against the optical fiber blocking channel 110, it undergoes elastic deformation, which not only reduces the force applied to the optical fiber, prevents the optical fiber from being deformed or damaged due to excessive force, but also makes the pressing block 120 and the optical fiber fit more closely and reduces the gap.

[0037] In this embodiment, and with reference to Figure 1 , Figure 4 and Figure 5 The optical fiber blocking structure also includes an optical fiber placement plane 112 arranged at the bottom, and the fiber splitting component 111 includes a blocking plate 1111 arranged on the optical fiber placement plane 112, and the blocking plate 1111 is arranged along the longitudinal direction of the optical fiber placement plane 112.

[0038] Specifically, the optical fiber blocking channel 110 includes an optical fiber placement plane 112 at the bottom, side walls 114 at both sides, and a blocking plate 1111 disposed on the optical fiber placement plane 112. The optical fiber placement plane 112, the side walls 114, and the blocking plate 1111 form at least two optical fiber placement areas. If there are multiple blocking plates 1111, a corresponding number of optical fiber placement areas are provided. When the pressing block 120 is pressed against the optical fiber blocking channel 110, the bottom surface of the pressing block 120 is respectively against the top of the side wall 114, the top of the blocking plate 1111, and the upper surface of the optical fiber.

[0039] In this embodiment, the fiber splitter 111 further includes protrusions 1112 disposed at both ends of the baffle plate 1111, and the pressing block 120 is extruded and disposed between the two protrusions 1112, and respectively has an interference fit with the two protrusions 1112. That is, the pressing block 120 has good contact with the baffle plate 1111, and the gap between the protrusion 1112 and the pressing block 120 is reduced. At the same time, the function of the protrusion 1112 is to prevent the optical fibers on both sides from crossing.

[0040] Furthermore, a plurality of parallel blocking plates 1111 are provided on the optical fiber placement plane 112 to increase the squeezing degree of the optical fiber in the horizontal direction.

[0041] like Figure 6 , Figure 7 and Figure 8 As shown, the present invention provides a preferred embodiment of an optical module.

[0042] The optical module also includes a fiber lower clamp 131 disposed in the housing, the fiber plugging channel 110 is disposed on the fiber lower clamp 131, the rear end of the fiber plugging channel 110 is a fiber access end and is fitted with an fiber upper clamp 132, the fiber lower clamp 131 and the fiber upper clamp 132 are both made of conductive materials; and the pressing block 120 is extruded and disposed on the fiber plugging channel 110 of the fiber lower clamp 131, and is connected to the fiber plugging channel 110, the fiber lower clamp 131, and the housing. Preferably, the pressing block 120 is bonded to the upper cover 142 by conductive adhesive.

[0043] In this embodiment, and with reference to 7 and 8, the shell includes a base 141 and an upper cover 142, the optical fiber lower clamp 131 is arranged on the base 141, the optical fiber upper clamp 132 fixes the optical fiber lower clamp 131 to the base 141, the pressing block 120 is fitted on the upper cover 142, and the pressing block 120 is pressed against the optical fiber lower clamp 131 when the base 141 and the upper cover 142 are installed.

[0044] Specifically, the optical fiber blocking channel 110 is disposed in the middle of the optical fiber lower clamping block 131 , and the rear end of the optical fiber lower clamping block 131 is connected to the optical cable 300 and connected to the optical fiber in the optical cable 300 .

[0045] In addition, the fiber optic lower clamp 131 is fixed at the fiber optic access end of the fiber optic upper clamp 132, and the fiber optic upper clamp 132 is fixed to the base 141. At the same time, the base 141 is provided with a slot for placing the fiber optic upper clamp 132, and the base 141 is also provided with a screw slot. The fiber optic upper clamp 132 is provided with a notch matching the screw slot. The fiber optic upper clamp 132 rests on the screw slot and is fixed to the screw slot of the base 141 by screws passing through the fiber optic upper clamp 132.

[0046] In addition, a PCBA board 180 is provided at the front end of the optical fiber lower clamping block 131, and the PCBA board 180 is also provided on the base 141. The optical fiber is led out from the optical cable 300, passes through the optical fiber lower clamping block 131, and is connected to the PCBA board 180 to realize the transmission of the optical signal.

[0047] In this embodiment, the optical module is preferably an optical module, and the optical module further includes an unlocking member 150 disposed between the base 141 and the upper cover 142. Specifically, the unlocking member 150 is interactively disposed on the upper cover 142 to achieve plug-in locking and unlocking of the optical module.

[0048] Furthermore, the optical module further comprises a pressure ring 160 disposed on the optical cable 300, and the pressure ring 160 fixes the optical cable 300 on the optical module. Specifically, the optical fiber access end further comprises a raised external thread structure to facilitate connection with the pressure ring 160 and fix the optical fiber.

[0049] Furthermore, the optical module further comprises a glue cap 170 disposed on the optical cable 300. The glue cap 170 forms a flexible buffer at the joint between the optical cable 300 and the module to protect the optical fiber in the optical cable 300 and prevent it from breaking.

[0050] In this embodiment, two solutions for matching the optical fiber blocking channel 110 with the optical fiber are provided.

[0051] Solution 1:

[0052] The depth of the optical fiber blocking channel 110 matches the diameter of the optical fiber, that is, the distance between the optical fiber placement plane 112 and the top of the side wall 114 matches the diameter of the optical fiber, and the optical fiber lower clamping block 131 and the base 141 both include limiting surfaces flush with the two side end surfaces of the optical fiber blocking channel 110, and the pressing block 120 is pressed onto the optical fiber blocking channel and fits onto the limiting surfaces of the optical fiber lower clamping block 131 and the base 141.

[0053] Option 2:

[0054] The depth of the optical fiber blocking channel 110 is greater than the diameter of the optical fiber, or the depth of the optical fiber blocking channel 110 is smaller than the diameter of the optical fiber, the optical fiber lower clamp 131 and the base 141 both include limiting surfaces flush with the two side end surfaces of the optical fiber blocking channel 110, and the pressing block 120 is configured as a boss or groove structure, and the pressing block 120 is pressed against the optical fiber blocking channel and adheres to the limiting surfaces of the optical fiber lower clamp 131 and the base 141.

[0055] Alternatively, the depth of the optical fiber blocking channel 110 may match the diameter of the optical fiber, and the limiting surfaces of the optical fiber lower clamp block 131 and the base 141 are not flush with the two side end surfaces of the optical fiber blocking channel 110, and the pressing block 120 is configured as a boss or groove structure, and the pressing block 120 is pressed against the optical fiber blocking channel and fits onto the limiting surfaces of the optical fiber lower clamp block 131 and the base 141.

[0056] Furthermore, the above solution not only enables the pressing block 120 to compress the optical fiber to achieve blocking, but also prevents damage to the optical fiber, thereby increasing the service life of the optical fiber.

[0057] In the present invention, the attached figure shows the implementation of the QSFP / QSFP+ optical module. Similar to MSA optical modules, such as SFP / SFP+ optical modules, XFP optical modules, CFP / CFP2 / CFP4, etc., this technical solution can be adopted. In addition, XFP and other non-MSA optical modules / system housings with multiple beams can also use this solution.

[0058] The above is only the best embodiment of the present invention and is not intended to limit the scope of the present invention. All equivalent changes or modifications made according to the scope of the patent application of the present invention are covered by the present invention.

Claims

1. A fiber plugging structure, which is arranged in an optical module capable of leading out a ribbon optical fiber / fiber bundle, wherein the optical module comprises a housing, and is characterized in that: The optical fiber plugging structure includes a pressing block, and an optical fiber plugging channel arranged in a shell and accommodating a ribbon optical fiber / optical fiber bundle arranged transversely in an array. The optical fiber plugging channel is provided with at least one fiber splitter for squeezing the ribbon optical fiber / optical fiber bundle arranged transversely in an array to both sides. The optical fiber plugging channel, the pressing block, and the shell are all made of conductive materials. The pressing block is pressed against the optical fiber plugging channel and connected to the optical fiber plugging channel and the shell. The optical module also includes a fiber lower clamping block arranged in the housing, the fiber blocking channel is arranged in the middle of the fiber lower clamping block, and the optical module also includes a fiber upper clamping block arranged at the rear end of the fiber lower clamping block, and the fiber lower clamping block and the fiber upper clamping block are both made of conductive materials; And, the pressing block is extruded and arranged on the optical fiber blocking channel of the optical fiber lower clamping block, and is connected with the optical fiber lower clamping block and the housing; The optical module is an optical module, and the housing of the optical module includes a base and an upper cover. The optical fiber lower clamp is arranged on the base, and the optical fiber upper clamp fixes the optical fiber lower clamp to the base. The pressing block is fitted on the upper cover, and the pressing block is pressed against the optical fiber lower clamp when the base and the upper cover are installed.

2. The optical fiber plugging structure according to claim 1, characterized in that: The optical fiber plugging structure further includes an optical fiber placement plane arranged at the bottom, and the fiber splitting component includes a blocking plate arranged on the optical fiber placement plane, and the blocking plate is arranged along the longitudinal direction of the optical fiber placement plane.

3. The optical fiber plugging structure according to claim 2, characterized in that: The fiber splitting component further comprises protrusions arranged at both ends of the blocking plate, and the pressing block is squeezed and arranged between the two protrusions and respectively fits with the two protrusions by interference.

4. The optical fiber blocking structure according to any one of claims 2 to 3, characterized in that: A plurality of parallel blocking plates are arranged on the optical fiber placement plane.

5. The optical fiber plugging structure according to claim 1, characterized in that: The pressing block is made of flexible material.

6. The optical fiber plugging structure according to claim 1, characterized in that: The pressing block is bonded to the upper cover via a conductive adhesive.

7. The optical fiber plugging structure according to claim 1, characterized in that: The depth of the optical fiber blocking channel matches the diameter of a single optical fiber of the optical fiber ribbon / optical fiber bundle, and the optical fiber lower clamp block and the base both include limit surfaces flush with the two side end surfaces of the optical fiber blocking channel, and the pressing block is pressed against the optical fiber blocking channel and adheres to the limit surfaces of the optical fiber lower clamp block and the base.

8. An optical fiber plugging system, applied to the optical fiber plugging structure according to any one of claims 1 to 7, wherein the optical fiber plugging structure is arranged in an optical module capable of leading out a ribbon optical fiber / optical fiber bundle, wherein the optical module comprises a housing, and characterized in that: The optical fiber plugging system includes a pressing block, an optical fiber plugging channel arranged in a shell, and a ribbon optical fiber / optical fiber bundle. At least one fiber splitter is arranged in the optical fiber plugging channel, and the fiber splitter squeezes the ribbon optical fiber / optical fiber bundle arranged laterally in the array to both sides. The optical fiber ribbon / optical fiber bundle arranged laterally in the array is arranged in the optical fiber plugging channel with an interference fit; and the optical fiber plugging channel, the pressing block, and the shell are all made of conductive materials. The pressing block is arranged on the optical fiber plugging channel and squeezes the surface of the optical fiber, and is connected to the optical fiber plugging channel and the shell.

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