CN114578488A - Optical fiber circuit board unit, optical transmission device, and photoelectric hybrid circuit board - Google Patents
Optical fiber circuit board unit, optical transmission device, and photoelectric hybrid circuit board Download PDFInfo
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- CN114578488A CN114578488A CN202011388037.8A CN202011388037A CN114578488A CN 114578488 A CN114578488 A CN 114578488A CN 202011388037 A CN202011388037 A CN 202011388037A CN 114578488 A CN114578488 A CN 114578488A
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- circuit board
- board unit
- optical
- assembly
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- 239000013307 optical fiber Substances 0.000 title claims abstract description 350
- 230000003287 optical effect Effects 0.000 title claims abstract description 37
- 230000005540 biological transmission Effects 0.000 title claims abstract description 18
- 239000000835 fiber Substances 0.000 claims abstract description 62
- 239000000758 substrate Substances 0.000 claims abstract description 49
- 230000001681 protective effect Effects 0.000 claims description 26
- 238000003032 molecular docking Methods 0.000 claims description 6
- 230000000712 assembly Effects 0.000 claims description 5
- 238000000429 assembly Methods 0.000 claims description 5
- 238000002360 preparation method Methods 0.000 claims description 5
- 230000008054 signal transmission Effects 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 2
- 239000010410 layer Substances 0.000 description 43
- 239000000463 material Substances 0.000 description 24
- 239000003292 glue Substances 0.000 description 14
- 230000001012 protector Effects 0.000 description 12
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- 230000000903 blocking effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005693 optoelectronics Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
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- 241001391944 Commicarpus scandens Species 0.000 description 1
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- 239000000565 sealant Substances 0.000 description 1
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Classifications
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- G—PHYSICS
- 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
- G02B6/36—Mechanical coupling means
- G02B6/3608—Fibre wiring boards, i.e. where fibres are embedded or attached in a pattern on or to a substrate, e.g. flexible sheets
-
- G—PHYSICS
- 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
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4274—Electrical aspects
- G02B6/428—Electrical aspects containing printed circuit boards [PCB]
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Light Guides In General And Applications Therefor (AREA)
Abstract
The invention discloses an optical fiber circuit board unit, an optical transmission device and a photoelectric hybrid circuit board, wherein the optical fiber circuit board unit comprises: a base body including a fiber outlet; the optical fiber assembly is arranged on the base body and extends out of the fiber outlet; the optical fiber circuit board unit also comprises a protection piece fixed on the substrate; wherein the protection member includes a protection zone, and the at least one optical fiber assembly is located in the protection zone. In this way, the optical fiber circuit board unit of the invention protects the at least one optical fiber assembly at the fiber outlet by the protection member fixed on the substrate, so as to reduce the occurrence of the situation that the at least one optical fiber in the at least one optical fiber assembly is easy to generate stress concentration to cause the at least one optical fiber to break, thereby improving the service life of the optical fiber and the reliability of the optical fiber circuit board unit.
Description
Technical Field
The invention is applied to the technical field of optical fiber protection, in particular to an optical fiber circuit board unit, an optical transmission device and a photoelectric hybrid circuit board.
Background
An optical fiber, also called an optical fiber, is a fiber made of glass or plastic, which can be used as a light transmission means. The optical fiber is mainly applied to communication transmission and is used for quickly transmitting data. The optical fiber has the advantages of small loss, certain bandwidth, small dispersion, simple wiring, easy integration, high reliability, simpler manufacture, low cost and the like. Optical fibers have found wide application in the data transmission industry by virtue of the above advantages.
However, the optical fiber itself has physical properties of poor ductility, vulnerability to damage, and susceptibility to breakage. The optical fiber is bent by a certain external force at the fiber outlet of the optical fiber transmission in the assembling or transporting process, so that the optical fiber is subjected to stress concentration at the fiber outlet to cause the optical fiber at the fiber outlet to break, thereby generating a certain influence on the data transmission of the optical fiber.
At present, it is needed to protect the optical fiber at the fiber outlet to reduce the occurrence of breakage of the optical fiber at the fiber outlet due to stress concentration easily generated in the optical fiber at the fiber outlet.
Disclosure of Invention
The invention provides an optical fiber circuit board unit, an optical transmission device and a photoelectric hybrid circuit board, which aim to solve the problem that optical fibers at a fiber outlet are easy to generate stress concentration to cause the breakage of the optical fibers at the fiber outlet in the prior art.
In order to solve the above technical problem, the present invention provides an optical fiber circuit board unit, including: a base body including a fiber outlet; at least one optical fiber assembly, wherein the optical fiber assembly is arranged on the substrate and extends out from the fiber outlet; the optical fiber circuit board unit also comprises a protection piece fixed on the substrate; wherein the protective member includes a protective zone, at least one of the optical fiber assemblies being located within the protective zone.
Wherein the protection zone has a closed cross-section.
Wherein the protection member comprises a hollow passage therethrough, and the protection region is the hollow passage.
Wherein the protection zone has a non-closed cross-section.
The protection piece comprises two plate bodies which are arranged in parallel or in a crossed mode, and the protection area is a non-closed space formed by the two plate bodies.
The protecting piece comprises a through hollow channel and a notch communicated with the hollow channel, and the protecting area is a non-closed space formed by the hollow channel and the notch together.
Wherein, the notch penetrates through the protection piece and is in a straight line, a curve line or a broken line.
Wherein the optical fiber assembly includes at least one optical fiber, and a surface of a portion of the optical fiber is in contact with the protective member.
Wherein the optical fiber assembly comprises at least one optical fiber, and the optical fiber is arranged at a distance from the protection piece.
Wherein the protector is fixed in the base body; wherein the protective member is located within the base to a depth in the range greater than 1 mm.
The base body comprises at least two base layers, and the base layers are attached to two opposite sides of the at least one optical fiber assembly so as to fix the at least one optical fiber assembly.
In order to solve the above technical problem, the present invention further provides an optical transmission device, including the optical fiber circuit board unit according to any one of the above embodiments, and an optical port disposed at an end of the optical fiber circuit board unit, where the optical port is used for connecting with an optical docking device to perform optical signal transmission.
In order to solve the above technical problem, the present invention further provides an optoelectronic hybrid circuit board, where the optoelectronic hybrid circuit board includes the optical fiber circuit board unit as described in any one of the above and a circuit conductor disposed on the optical fiber circuit board unit.
The invention has the beneficial effects that: in contrast to the prior art, the optical fiber circuit board unit of the present invention includes a base body including a fiber outlet; the optical fiber assembly is arranged on the base body and extends out of the fiber outlet; the optical fiber circuit board unit also comprises a protection piece fixed on the substrate; wherein the protection member includes a protection zone, and the at least one optical fiber assembly is located in the protection zone. Through the structure, the optical fiber circuit board unit is provided with the protection piece fixed on the base body, and the at least one optical fiber assembly is located in the protection area, so that the protection piece can provide blocking or buffering effect for the optical fiber assembly. Therefore, the condition that the optical fiber is easy to break due to stress concentration of the optical fiber assembly is reduced, the service life of the optical fiber is prolonged, and the reliability of the optical fiber circuit board unit is improved.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of an optical fiber circuit board unit provided in the present invention;
FIG. 2 is a schematic cross-sectional view of the fiber circuit board unit in the embodiment of FIG. 1;
FIG. 3 is a schematic structural diagram of another embodiment of an optical fiber circuit board unit provided by the present invention;
FIG. 4 is a schematic cross-sectional view of the fiber circuit board unit in the embodiment of FIG. 3;
FIG. 5 is a schematic structural diagram of another embodiment of an optical fiber circuit board unit provided by the present invention;
FIG. 6 is a schematic cross-sectional view of the fiber circuit board unit in the embodiment of FIG. 5;
FIG. 7 is a schematic structural diagram of an embodiment of an optical transmission apparatus provided in the present invention;
fig. 8 is a schematic structural diagram of another embodiment of the optical transmission device provided in the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
Referring to fig. 1-2, fig. 1 is a schematic structural diagram of an embodiment of an optical fiber circuit board unit provided in the present invention. Fig. 2 is a schematic cross-sectional view of the optical fiber circuit board unit in the embodiment of fig. 1. In this embodiment, a configuration in which the number of optical fiber assemblies is one will be described.
The optical fiber circuit board unit 10 of the present embodiment includes a base 11, an optical fiber assembly 12, and a protective member 13. The optical fiber assembly 12 is mounted on the base 11 and extends from the fiber outlet 111 of the base 11. The base 11 is attached to the protector 13 to fix the protector 13.
The protection member 13 is fixed on the base 11, the protection member 13 includes a protection region 131, and the optical fiber assembly 12 is located in the protection region 131 of the protection member 13, so that the optical fiber assembly 12 is protected by the protection region 131. Specifically, the protection member 13 extends in synchronization with the extension of the optical fiber assembly 12 to protect the optical fiber assembly 12 outside the fiber outlet 111 and inside the protection region 131 as a whole. The protection member 13 is located in the substrate 11 at a depth greater than 1 mm, for example: and may be 1 mm, 1.3 mm, 1.5 mm, 3 mm, 10 mm, 20 mm, etc., and the specific depth of the protection member 13 in the substrate 11 may be determined based on the length of the substrate 11 in practical application, and is not limited herein.
In a specific application scenario, the substrate 11 includes at least two base layers 112, and the at least two base layers 112 are disposed on two opposite sides of the optical fiber assembly 12 for fixing the optical fiber assembly 12. In a specific application scenario, the substrate 11 may include 4 substrates 112, and the 4 substrates 112 are disposed around the optical fiber assembly 12 to fix the optical fiber assembly 12.
In one particular application scenario, the fiber optic assembly 12 may include: at least one optical fiber 121. The arrangement mode between the at least one optical fiber 121 may be arranged side by side, or stacked and staggered, or stacked and arrayed or randomly, and the specific arrangement mode between the at least one optical fiber 121 may be set according to actual requirements, which is not limited herein. It will be appreciated that the optical fibers 121 included in the fiber optic assembly 12 may be arranged side-by-side in one layer or in multiple layers. The plurality of layers of the arrangement structures are stacked layer by layer, and the optical fibers 121 in each layer may be different in number and may not be overlapped in arrangement position.
In the present embodiment, the surface of a portion of the optical fiber 121 in the optical fiber assembly 12 is in contact with the protection member 13. The protection member 13 covers the optical fiber assembly 12 to protect the optical fibers 121 in the optical fiber assembly 12. The structure of the optical fiber assembly 12 in which the surface of a part of the optical fiber 121 contacts the protection member 13 is mainly applied to the optical fiber assembly in this embodiment. However, in other embodiments, when the number of the optical fibers 121 in the optical fiber assembly 12 is large, there may be a risk that the optical fibers 121 are too many and the arrangement order thereof is disordered or scattered when all the optical fibers 121 are disposed in the protection region 131, so that the optical fiber assembly 12 may be coated by the substrate 11, and then the protection member 13 is disposed on the optical fiber assembly 12 and the substrate 11 coating the same. At this time, the optical fiber assembly 12 is spaced apart from the protector 13. The specific position of the protection member 23 of the present invention can be determined based on the actual manufacturing method of the optical fiber circuit board unit 10, and is not limited herein.
With the above structure, the optical fiber circuit board unit 10 of the present embodiment is provided with the protection member 13 fixed on the base 11, and the optical fiber assembly 12 is located in the protection region 131 of the protection member 13. The optical fiber assembly 12 extending from the fiber outlet 111 is protected by the protection region 131 of the protection member 13. When the optical fiber assembly is impacted by external force, the problem of stress concentration of the optical fiber 121 in the optical fiber assembly 12 at the fiber outlet 111 is reduced due to the blocking or slowing effect of the protection area 131, so that the occurrence of breakage of the optical fiber 121 is reduced, the service life of the optical fiber 121 is prolonged, and the reliability of the optical fiber circuit board unit 10 is improved.
Referring to fig. 3-4, fig. 3 is a schematic structural diagram of another embodiment of the optical fiber circuit board unit provided in the present invention. Fig. 4 is a schematic cross-sectional view of the optical fiber circuit board unit in the embodiment of fig. 3. The optical fiber board unit 20 of the present embodiment includes: a base 21, an optical fiber assembly 22, and a protective member 23. The base body 21 comprises a fiber outlet 211, the optical fiber assembly 22 is installed on the base body 21, and the base body 21 and the optical fiber assembly 22 are attached to each other. Specifically, the optical fiber assembly 22 is fixed in the base 21 and extends through the fiber outlet 211.
In the present embodiment, the optical fiber module 22 includes a plurality of optical fibers 221 arranged in a stacked manner, but other structures of the optical fiber module 22 are the same as those of the above-described embodiment. Specifically, the positions of the substrate 21, the protector 23 and the optical fiber 221, the fixing manner of the protector 23 and the substrate 21, and the depth range of the protector 23 in the substrate 21 in the present embodiment are the same as those in the above embodiments.
In the present embodiment, the sealant layer 222 is provided between the optical fibers 221 fixedly provided in the base body 21. In a specific application scenario, a glue layer 222 is disposed between each layer of the plurality of optical fibers 221 arranged in a stacked manner and between the optical fibers 221 of other adjacent layers, so that in the arrangement process of the optical fibers 221, after the optical fibers 221 of the lowest layer are arranged and fixed, the optical fibers 221 of the lowest layer are covered with one glue layer 222, which is beneficial to continuously covering and fixing the optical fibers 221 of the second layer on the optical fibers 221 of the lowest layer, thereby realizing the preparation of the plurality of optical fibers 221 arranged in a stacked manner layer by layer, that is, the optical fiber assembly 22. The glue layer 222 is not disposed between the optical fibers 221 of the optical fiber assembly 22 extending out of the fiber outlet 22, so as to improve the flexibility of the optical fibers 221. In a specific application scenario, each optical fiber 221 in the matrix 21 and the adjacent other optical fibers 221 may also be fixed by the glue layer 222, which is not limited herein.
In the present embodiment, further, the protection region 231 in the protection member 23 has a closed cross section, that is, the protection member 23 is disposed on the entire circumference of the optical fiber assembly 22 to protect at least one optical fiber 221 in the optical fiber assembly 22. The protective member 23 is fixed in the base 21 and entirely covers a portion of the at least one optical fiber 221 extending out of the base 21. And the protection member 23 also covers a portion of the at least one optical fiber 221 near the fiber outlet 211 and overlapping the base 21 to further protect the at least one optical fiber 221 from the outside. It should be noted that, when the protection member 23 is spaced apart from the optical fiber assembly 22 in other embodiments, the portion of the protection member 23 located inside the base 21 is spaced apart from the portion of the optical fiber assembly 22 located inside the base 21; and the portion of the protection member 23 extending out of the base 21 can be adjusted according to the length of the optical fiber assembly 22 extending out of the base 21. For example: when the length of the optical fiber assembly 22 extending out of the base 21 is longer, the protection member 23 covers the portion of the optical fiber assembly 22 extending out of the base 21, and the portion of the protection member 23 gradually departing from the fiber outlet 111 gradually approaches the optical fiber assembly 22 due to the fracture of the base 21, so as to finally contact the optical fiber assembly 22. When the optical fiber assembly 22 extends out of the base 21 for a short length, the protection member 23 can cover the portion of the optical fiber assembly 22 extending out of the base 21 and be spaced apart from the optical fiber assembly 22.
In a specific application scenario, the protection member 23 may include a hollow channel therethrough, and the protection region 231 is the hollow channel. The optical fiber assembly 22 is disposed in the hollow passage to be protected by a protection member 23. In a specific application scenario, the protection member 23 may be a tube sleeve structure, and the protection region 231 is a space in the tube sleeve structure, in which the optical fiber assembly 22 is disposed to protect at least one optical fiber 221 of the optical fiber assembly 22. In a specific application scenario, the protection member 23 may be a heat shrinkable tube with a closed cross section, the protection region 231 is a tube space of the heat shrinkable tube, and the optical fiber assembly 22 is disposed in the tube of the heat shrinkable tube to protect at least one optical fiber 221 of the optical fiber assembly 22 through the heat shrinkable tube. In a specific application scenario, the protection member 23 may also be a flexible material with a closed cross section, so as to cover the optical fiber assembly 22 with the flexible material, thereby protecting the at least one optical fiber 221, and the specific material of the protection member 23 is not limited herein.
Alternatively, a part of the surface of the optical fiber assembly 22 is in contact with the protection member 23, that is, the inner side of the protection member 23 covers and contacts the optical fiber 221 on the outer side of the optical fiber assembly 22, so as to protect the optical fiber assembly 22. However, in other embodiments, a glue layer may be disposed on the inner side of the protection member 23 close to the optical fiber assembly 22, so as to fix the protection member 23 and the optical fiber assembly 22 by the glue layer, thereby further enhancing the fixing protection of the at least one optical fiber 221. At this time, all the optical fibers 221 of the optical fiber assembly 22 are not in contact with the protector 23.
In a specific application scenario, the arrangement order among the at least one optical fiber 221 may be arranged based on the color spectrum or other properties of each optical fiber 221, or may be arranged randomly. In a specific application scenario, when the at least one optical fiber 221 needs to be arranged based on the color spectrum or other properties of each optical fiber 221, a glue layer 222 may be disposed between the at least one optical fiber 221 to fix the arrangement position between the at least one optical fiber 221, so as to facilitate the connection between the optical fiber 221 and the optical port. In other embodiments, no adhesive substance may be disposed between the at least one optical fiber 221, and the at least one optical fiber 221 may be movably disposed therebetween. When the optical fibers 221 are used, the arrangement sequence of the at least one optical fiber 221 can be adjusted according to actual requirements to adapt to different use scenes, so that the flexibility of the use of the at least one optical fiber 221 is improved.
In a specific application scenario, the material of the substrate 21 includes a flexible material and a rigid material. When the substrate 21 is made of a flexible material, the substrate 21 may be a cover film, and a glue layer (not shown) is disposed on a side of the cover film close to the at least one optical fiber 221 to be attached to the optical fiber assembly 22, so as to fix the optical fiber assembly 22. The cover film is also called a base film, plays a role of supporting the adhesive layer, and can be made of any material. In a specific application scenario, the base 21 may also be made of a material that has a certain viscosity at a normal temperature (20-25 degrees celsius) or a specific temperature and can be used to adhesively fix the optical fiber assembly 22, which is not limited herein.
When the substrate 21 is made of a rigid material, the substrate 21 may be a base layer of a printed circuit board, and the optical fiber assembly 22 is fixed through the rigid base layer. In a specific application scenario, the material of the substrate 21 may also be rigid-flexible, that is, the material of the substrate 21 may include: the base layer, the cover film and the adhesive layer of the printed circuit board are adapted to different application scenes.
With the above structure, the optical fiber circuit board unit 20 of the present embodiment has the following beneficial effects: the protection member 23 with a closed cross section protects the optical fiber assembly 22 in all directions to reduce and/or block all-directional stress of at least one optical fiber 221, thereby reducing the problem that stress concentration is easily generated on the fiber outlet 211 of at least one optical fiber 221 in the optical fiber assembly 22. The protection member 23 of the present embodiment also covers the position where the at least one optical fiber 221 extends to the base body 21, and the protection member 23 is disposed inside the base body 21 along with the at least one optical fiber 221, so as to further protect the at least one optical fiber 221 at the fiber outlet 211, so as to reduce the occurrence of breakage of the at least one optical fiber 221 caused by stress concentration of the at least one optical fiber 221 in the optical fiber assembly 22, thereby improving the service life of the optical fiber 221 and the quality and reliability of the optical fiber circuit board unit 20.
Referring to fig. 5-6, fig. 5 is a schematic structural diagram of another embodiment of the optical fiber circuit board unit provided in the present invention. Fig. 6 is a schematic cross-sectional view of the optical fiber circuit board unit in the embodiment of fig. 5. The optical fiber board unit 30 of the present embodiment includes: a substrate 31, an optical fiber assembly 32, and a protective member 33. The base 31 includes a fiber outlet 311, the optical fiber assembly 32 is mounted on the base 31, and the base 31 and the optical fiber assembly 32 are attached to each other. Specifically, the optical fiber assembly 32 is disposed in the base 31 and extends through the fiber outlet 311.
In this embodiment, the optical fiber assembly 32 includes at least one optical fiber 321 arranged in a stacked manner, and other structures of the optical fiber assembly 32 are the same as those of the above-described embodiment. Specifically, the positions of the substrate 31, the protector 33, and the optical fiber 321, the fixing manner of the protector 33 and the substrate 31, and the depth range of the protector 33 in the substrate 31 in the present embodiment are the same as those in the above embodiments.
In the present embodiment, the optical fiber 321 provided in the base 31 is fixed to the base 31. In a specific application scenario, the matrix 31 is disposed between each layer of the plurality of optical fibers 321 arranged in a stacked manner and between the optical fibers 321 of other adjacent layers, so that in the arrangement process of the optical fibers 321, after the optical fibers 321 of the lowest layer are arranged and fixed, the matrix 31 is covered on the optical fibers 321 of the lowest layer, which is beneficial to continuously covering and fixing the optical fibers 321 of the second layer on the optical fibers 321 of the lowest layer, thereby realizing the preparation of the plurality of optical fibers 321 arranged in a stacked manner, that is, the optical fiber assembly 32 layer by layer. The matrix 31 is not disposed between the optical fibers 321 of the optical fiber assembly 32 extending out of the fiber outlet 32, so as to improve the flexibility of the optical fibers 321. In a specific application scenario, each optical fiber 321 and the adjacent other optical fibers 321 in the matrix 31 may also be fixed by the matrix 31, which is not limited herein. In other embodiments, the matrix 31 between the optical fibers 321 may be replaced by a glue layer or other fixing material to realize the stacked arrangement of the optical fibers 221.
In this embodiment, further, the protection zone 331 has a non-closed cross-section. Specifically, the protection member 33 includes two plates disposed in parallel and opposite to each other, and disposed on opposite sides of the optical fiber assembly 32. The non-enclosed space formed between the two plates is the protection area to protect the optical fiber assembly 32. Although the protection region 331 is an unclosed space, when the stress concentration occurs in the optical fiber assembly 32 at the fiber outlet 311, the protection region 331 with an unclosed cross section can still provide a certain blocking or relieving effect, so as to reduce the problem of the stress concentration occurring in the optical fiber 321 in the optical fiber assembly 32 at the fiber outlet 311. It is understood that the two plate bodies may be disposed in a crossed or perpendicular manner, so long as the optical fiber assembly 32 is located in the protection area 331 formed by the two plate bodies, the optical fiber assembly 32 can be protected. Obviously, based on the above analysis, the protection member 33 may also comprise a single plate or a plurality of plates (more than two plates); specifically, a single plate is disposed on either side of the optical fiber assembly 32 to form a non-enclosed space for protecting the optical fiber assembly 32. When the protection member 33 is a plurality of plates, the plurality of plates are sequentially connected end to end, but not closed, and the space between the plurality of plates is a protection area; taking three plate bodies as an example for illustration, the three plate bodies are sequentially connected end to end and arranged on three adjacent sides of the optical fiber assembly 32 to form an unsealed space for protecting the optical fiber assembly 32.
In another embodiment, the protection member 33 includes a hollow passage and a notch communicating with the hollow passage, and the non-closed space formed by the hollow passage and the notch together constitutes the protection area 331 of the embodiment, and the notch penetrates the protection member 33 in the radial direction of the protection member 33. In this embodiment, the notch of the protection area 331 is a straight line, but in other embodiments, the notch of the protection area 331 may also be a curve or a broken line, which is not limited herein. That is, the notch may be an elongated opening penetrating through the protection member 33, and an axis of the notch is parallel to or intersects with an axis of the protection member 33; or the notch may be a spiral, curved or dogleg shaped opening around the wall of the protector 33.
The present embodiment protects at least one optical fiber 321 in the optical fiber assembly 32 by the protection member 33. Part of the structure of the protection member 33 is fixed in the base 31 through the fiber outlet 311 and covers the entire surface of the portion of the at least one optical fiber 321 extending out of the base 31. And the protection member 33 also covers a portion of the at least one optical fiber 321 near the fiber outlet 311 and overlapping the substrate 31, so that the at least one optical fiber 321 is further protected from the whole surface. The protection member 33 is disposed in the base 31 to a depth greater than 1 mm. For example: may be 1 mm, 1.3 mm, 1.5 mm, 3 mm, 10 mm, 20 mm, etc., and the specific depth of the protection member 33 disposed in the substrate 31 may be determined based on the length of the actual substrate 31, which is not limited herein.
In the present embodiment, the protection member 33 is spaced apart from the optical fiber assembly 32. The entire outer side of the optical fiber module 32 is covered with the base 31. The protection members 33 are disposed on opposite sides of the substrate 31 covering the optical fiber assembly 32 to form an unclosed space for protecting the optical fiber assembly 32. Specifically, the protection member 33 is disposed spaced apart from the entire outer side of the at least one optical fiber 321 to protect the at least one optical fiber 321. And the portion of the protection member 33 on the base 31 is also spaced apart from the corresponding at least one optical fiber 321. When the substrate 31 coats the optical fiber assembly 32, at least one optical fiber 321 in the optical fiber assembly 32 may also be coated by the substrate 31, so as to further fix at least one optical fiber 321, thereby improving the stability of the optical fiber assembly 32.
The structure of the protection member 33 and the at least one optical fiber 321 spaced apart is mainly applied to the case where the number of the optical fibers 321 in the single optical fiber assembly 32 is large. In a specific application scenario, when the number of the optical fibers 321 in a single optical fiber assembly 32 is large, in order to avoid scattering of at least one optical fiber 321 in the preparation process, in the preparation process of the optical fiber circuit board unit 30, the optical fiber assembly 32 may be first coated by the substrate 31. An adhesive layer (not shown) may be disposed on the inner side of the substrate 31 near the optical fiber assembly 32 to fix the optical fiber assembly 32, so as to reduce scattering of the optical fibers 321 in the optical fiber assembly 32 during the manufacturing process.
In other embodiments, however, portions of the optical fibers 321 in the fiber optic assembly 32 may be in surface contact with the protective member 33. Thereby reducing the manufacturing steps of the optical fiber circuit board unit 30 and improving the manufacturing efficiency of the optical fiber circuit board unit 30. Further, in other embodiments, a glue layer (not shown) may be disposed between the optical fibers 321 on the inner side of the optical fiber assembly 32 away from the protection member 33 to fix the optical fiber assembly to the base 31, so as to improve stability and reliability of the optical fiber circuit board unit 30.
In other embodiments, a glue layer may be disposed between each adjacent two optical fibers 321 to fix the arrangement order between at least one optical fiber 321, so as to facilitate the connection between the optical fiber 322 and the optical port. When the optical fiber circuit board unit 30 has a flexibility requirement for the at least one optical fiber 321, no adhesive substance may be disposed between the at least one optical fiber 321, and the at least one optical fiber 321 may be movably disposed. When the optical fibers 322 are used, the arrangement sequence of the at least one optical fiber 321 can be adjusted according to actual requirements, so that the flexibility of the use of the at least one optical fiber 321 is improved. And are not limited herein.
In a specific application scenario, the material of the substrate 31 includes a flexible material and a rigid material. When the substrate 31 is made of a flexible material, the substrate 31 may be a cover film, and a glue layer (not shown) is disposed on a side of the substrate 31 close to the optical fiber assembly 32 to be attached to the optical fiber assembly 32, so as to fix the optical fiber assembly 32. A glue layer (not shown) is disposed on a side of the substrate 31 near the at least one optical fiber 321 to be attached to the at least one optical fiber 321, so as to fix the at least one optical fiber 321. In a specific application scenario, the substrate 31 may also be made of a material that has a certain viscosity at a normal temperature (20-25 degrees celsius) or a specific temperature and can be used to adhesively fix the optical fiber assembly 32, which is not limited herein.
When the substrate 31 is made of a rigid material, the substrate 31 may be a base material of a printed circuit board, and the optical fiber assembly 32 and the at least one optical fiber 321 are fixed by the rigid base material, so as to improve stability and reliability of the optical fiber circuit board unit 30. In a specific application scenario, the material of the substrate 31 may also be rigid-flexible, that is, the material of the substrate 31 may include: the base layer, the cover film and the adhesive layer of the printed circuit board are adapted to different application scenes.
In a specific application scenario, when the number of the optical fiber assemblies 32 is multiple, the structure of the optical fiber assemblies 32 may be the same as that of the optical fiber assembly 32 described in this embodiment, or may be the same as that of the optical fiber assembly 22 in the embodiment of fig. 2. And are not limited herein.
With the above structure, the optical fiber circuit board unit 30 of the present embodiment has the following beneficial effects: by providing the protection area 331 with a non-closed cross-section in the optical fiber assembly 32, a certain blocking or buffering effect is provided for at least one optical fiber 321 in the optical fiber assembly 32 on the basis of reducing the material cost of the protection element 331. And a substrate 31 is disposed between the protection member 33 and the at least one optical fiber 321 to fix a large number of optical fibers 321 in advance, thereby reducing scattering of the optical fibers 321 in the manufacturing process of the optical fiber circuit board unit 30. The protection member 33 of the embodiment also covers the position where the at least one optical fiber 321 extends out of the base 31, and further protects the at least one optical fiber 321 at the fiber outlet 311 along with the at least one optical fiber 321 being disposed inside the base 31, so as to reduce the occurrence of the situation that the at least one optical fiber 321 in the optical fiber assembly 32 is easily broken due to stress concentration, thereby improving the service life of the optical fiber 321 and the quality of the optical fiber circuit board unit 30.
Fig. 7-8 are schematic structural diagrams of an embodiment of an optical transmission device provided in the present invention, and fig. 8 is a schematic structural diagram of another embodiment of an optical transmission device provided in the present invention. In the present embodiment, the optical transmission device includes an optical fiber board unit 10 and an optical port 200 provided at an end of the optical fiber board unit 10, wherein the optical port 200 is used for connecting with an optical docking device for optical signal transmission.
The optical fiber circuit board unit 10 in this embodiment is the same as the optical fiber circuit board unit 10 in the above embodiment of the optical fiber circuit board unit of the present invention, and the details thereof can be referred to the above embodiment, and are not described herein again.
It should be noted that the optical port 200 receives the optical fiber extending from the fiber outlet and further connects the received optical fiber to other circuit boards. The optical fibers extending from the two ends of each optical fiber circuit board unit 10 can be connected to the same or different numbers of circuit boards in the optical docking device in different ways.
In one application scenario, the circuit board of the optical docking apparatus includes a main circuit board 300 and a sub circuit board 400. As shown in fig. 7, the optical fiber board unit 10 has one end connected to one main board 300 through the optical port 200, and the other end connected to a plurality of sub-boards 400 through the optical port 200, respectively. In this way, the optical signal of one location can be transmitted to different locations, respectively.
In another application scenario, the circuit board of the optical docking device includes a sub-circuit board 400. As shown in fig. 8, each end of the optical fiber board unit 10 can be connected to different sub-boards 400 through the optical port 200, thereby realizing mutual optical connection between the sub-boards 400 at different positions through the optical port 200.
In particular, the optical port 200 may be a single fiber connector or a multi-fiber connector. The single-fiber connector is a connector to which only one optical fiber is connected, and the multi-fiber connector is a connector to which a plurality of optical fibers can be connected, specifically, the number of optical fibers that can be connected by different multi-fiber connectors may be different, and may be, for example, 4, 8, 12, or 24.
Among these, a multifiber connector is used in an optical fiber transmission device having a high density. Specifically, at least one optical fiber can be combined into a group to be connected with the corresponding multi-fiber connector, for example, glue can be used for bonding together, a protective sleeve such as a plastic protective sleeve can be further mounted on the periphery of each group of optical fibers to protect the optical fibers to a certain extent, and label paper can be attached to the protective sleeve to mark information such as mounting positions of the group of optical fibers.
Furthermore, the invention also provides a photoelectric hybrid circuit board which can comprise an optical fiber circuit board unit and a circuit lead arranged on the optical fiber circuit board unit.
The optical fiber circuit board unit in this embodiment has the same structure as the optical fiber circuit board unit in the above embodiments of the present invention, and the details thereof can be referred to the above embodiments, and are not described herein again.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is specific and detailed, but not to be understood as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (13)
1. A fiber optic cord plate unit comprising:
a base body including a fiber outlet;
at least one optical fiber assembly, wherein the optical fiber assembly is arranged on the substrate and extends out from the fiber outlet; it is characterized in that the preparation method is characterized in that,
the optical fiber circuit board unit also comprises a protection piece fixed on the substrate;
wherein the protective member includes a protective zone, at least one of the optical fiber assemblies being located within the protective zone.
2. The fiber optic cord plate unit of claim 1, wherein the protective zone has a closed cross-section.
3. The fiber optic cord plate unit of claim 2, wherein said protective member includes a hollow channel therethrough, said protective zone being said hollow channel.
4. The fiber optic cord plate unit of claim 1, wherein the protective zone has an unsealed cross-section.
5. The fiber circuit board unit according to claim 4, wherein the protection member comprises two plate bodies, the two plate bodies are arranged in parallel or in a crossed manner, and the protection area is an unclosed space formed by the two plate bodies.
6. The fiber optic circuit board unit of claim 4, wherein the protective member includes a hollow channel therethrough and a notch in communication with the hollow channel, and the protective region is a non-enclosed space formed by the hollow channel and the notch.
7. The fiber optic circuit board unit of claim 6, wherein the notch extends through the protection member and is linear, curved or broken.
8. The fiber optic circuit board unit of any one of claims 1-7, wherein the fiber optic assembly includes at least one optical fiber, a surface of a portion of the optical fiber being in contact with the protective member.
9. The fiber optic circuit board unit of any one of claims 1-7, wherein the optical fiber assembly includes at least one optical fiber, the optical fiber being spaced apart from the protective member.
10. The fiber circuit board unit according to any one of claims 1-7,
the protective element is fixed in the base body; wherein the protective member is located within the base to a depth in the range greater than 1 mm.
11. The fiber circuit board unit according to any one of claims 1-7,
the base body comprises at least two base layers, and the base layers are attached to two opposite sides of the at least one optical fiber assembly so as to fix the at least one optical fiber assembly.
12. An optical transmission device, comprising the optical fiber circuit board unit according to any one of claims 1 to 11, and an optical port provided at an end of the optical fiber circuit board unit, the optical port being adapted to be connected to an optical docking device for optical signal transmission.
13. An optoelectric hybrid board comprising the optical fiber board unit according to any one of claims 1 to 11 and a circuit lead provided on the optical fiber board unit.
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| CN202011388037.8A CN114578488B (en) | 2020-12-01 | 2020-12-01 | Optical fiber circuit board unit, optical transmission device and photoelectric hybrid circuit board |
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| CN202011388037.8A CN114578488B (en) | 2020-12-01 | 2020-12-01 | Optical fiber circuit board unit, optical transmission device and photoelectric hybrid circuit board |
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| CN114578488B CN114578488B (en) | 2024-03-12 |
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