CN114578488B - 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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- CN114578488B CN114578488B CN202011388037.8A CN202011388037A CN114578488B CN 114578488 B CN114578488 B CN 114578488B CN 202011388037 A CN202011388037 A CN 202011388037A CN 114578488 B CN114578488 B CN 114578488B
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- 239000013307 optical fiber Substances 0.000 title claims abstract description 347
- 230000003287 optical effect Effects 0.000 title claims abstract description 38
- 230000005540 biological transmission Effects 0.000 title claims abstract description 19
- 239000000835 fiber Substances 0.000 claims abstract description 73
- 230000001681 protective effect Effects 0.000 claims abstract description 33
- 239000000758 substrate Substances 0.000 claims abstract description 27
- 230000001012 protector Effects 0.000 claims description 30
- 239000000463 material Substances 0.000 claims description 26
- 239000011159 matrix material Substances 0.000 claims description 16
- 230000000712 assembly Effects 0.000 claims description 9
- 238000000429 assembly Methods 0.000 claims description 9
- 238000003032 molecular docking Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 4
- 230000005693 optoelectronics Effects 0.000 claims description 2
- 230000008054 signal transmission Effects 0.000 claims description 2
- 239000004020 conductor Substances 0.000 claims 1
- 239000010410 layer Substances 0.000 description 36
- 239000003292 glue Substances 0.000 description 13
- 238000010586 diagram Methods 0.000 description 10
- 238000002360 preparation method Methods 0.000 description 8
- 239000012790 adhesive layer Substances 0.000 description 6
- 230000000903 blocking effect Effects 0.000 description 4
- 239000013039 cover film Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000010408 film Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000013459 approach Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 208000035475 disorder Diseases 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- 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]
Landscapes
- 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 an optical-electrical hybrid circuit board, wherein the optical fiber circuit board unit comprises: a substrate including a fiber outlet; at least one optical fiber assembly, the optical fiber assembly is installed on the base body and extends out from the fiber outlet; the optical fiber circuit board unit also comprises a protecting piece fixed on the base body; wherein the protective member includes a protective region, and the at least one fiber optic assembly is positioned within the protective region. Through the mode, the optical fiber circuit board unit protects the at least one optical fiber component of the fiber outlet through the protecting piece fixed on the base body, so that the condition that at least one optical fiber in the at least one optical fiber component is easy to generate stress concentration to cause breakage of the at least one optical fiber is reduced, and the service life of the optical fiber and the reliability of the optical fiber circuit board unit are improved.
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 known as an optical fiber, is a fiber made of glass or plastic, and can be used as a light transmission tool. The optical fiber is mainly applied to communication transmission and is used for rapidly transmitting data. The optical fiber has the advantages of small loss, certain bandwidth, small dispersion, simple wiring, easy integration, high reliability, simple manufacture, low manufacturing cost and the like. Optical fibers find wide application in the related industries of data transmission by virtue of the above advantages.
However, since the optical fiber itself has physical characteristics of poor ductility, being vulnerable to breakage and breakage. At the fiber outlet of the optical fiber transmission, a certain external force is often applied in the processes of assembly or transportation, so that the optical fiber is bent, the stress concentration of the optical fiber at the fiber outlet causes the breakage of the optical fiber at the fiber outlet, and the data transmission of the optical fiber is influenced to a certain extent.
At present, protection is needed to be carried out on the optical fiber at the fiber outlet so as to reduce the occurrence of fracture of the optical fiber at the fiber outlet caused by stress concentration of the optical fiber at the fiber outlet.
Disclosure of Invention
The invention provides an optical fiber circuit board unit, an optical transmission device and an optical-electrical hybrid circuit board, which are used for solving the problem that in the prior art, the optical fiber at a fiber outlet is easy to generate stress concentration, so that the optical fiber at the fiber outlet is broken.
In order to solve the above technical problems, the present invention provides an optical fiber circuit board unit, including: a substrate including a fiber outlet; at least one optical fiber assembly mounted on the base and extending out of the fiber outlet; the optical fiber circuit board unit further comprises a protection piece fixed on the base body; wherein the protective member includes a protective region, at least one of the fiber optic assemblies being positioned within the protective region.
Wherein the protection zone has a closed cross section.
The protection piece comprises a through hollow channel, and the protection area is the hollow channel.
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 crossing mode, and the protection area is a non-closed space formed by the two plate bodies.
The protection piece comprises a through hollow channel and a notch communicated with the hollow channel, and the protection area is a non-closed space formed by the hollow channel and the notch together.
The notch penetrates through the protection piece and is in a straight line, a curve or a folding line.
Wherein the optical fiber assembly comprises at least one optical fiber, and a part of the surface of the optical fiber is contacted with the protecting piece.
Wherein, the fiber optic assembly includes at least one optic fibre, optic fibre with the guard interval sets up.
Wherein the protection piece is fixed in the matrix; wherein the depth range of the protection piece in the matrix is greater than 1 millimeter.
The base body comprises at least two base layers, and at least two base layers are attached to two opposite sides of the at least one optical fiber assembly to fix the at least one optical fiber assembly.
In order to solve the technical problem, the invention also provides an optical transmission device, which comprises the optical fiber circuit board unit and an optical port arranged at the end part of the optical fiber circuit board unit, wherein the optical port is used for being connected with an optical docking device so as to transmit optical signals.
In order to solve the technical problem, the invention also provides an optoelectronic hybrid circuit board, which comprises the optical fiber circuit board unit and a circuit wire arranged on the optical fiber circuit board unit.
The beneficial effects of the invention are as follows: different from the prior art, the optical fiber circuit board unit comprises a substrate and a fiber outlet; at least one optical fiber assembly, the optical fiber assembly is installed on the base body and extends out from the fiber outlet; the optical fiber circuit board unit also comprises a protecting piece fixed on the base body; wherein the protective member includes a protective region, and the at least one fiber optic assembly is positioned within the protective region. By the structure, the optical fiber circuit board unit of the invention is provided with the protecting piece fixed on the base body, and at least one optical fiber component is positioned in the protecting area, so that the blocking or slowing down effect of the optical fiber component is provided by the protecting piece. Therefore, the occurrence of the condition that the optical fiber is broken due to stress concentration of the optical fiber assembly is reduced, and the service life of the optical fiber and the reliability of the optical fiber circuit board unit are improved.
Drawings
FIG. 1 is a schematic diagram of an embodiment of an optical fiber circuit board unit according to the present invention;
FIG. 2 is a schematic cross-sectional view of the fiber optic circuit board unit of the embodiment of FIG. 1;
FIG. 3 is a schematic diagram of another embodiment of an optical fiber circuit board unit according to the present invention;
FIG. 4 is a schematic cross-sectional view of the fiber optic line card unit of the embodiment of FIG. 3;
FIG. 5 is a schematic diagram of a fiber circuit board unit according to another embodiment of the present invention;
FIG. 6 is a schematic cross-sectional view of the fiber optic line card unit of the embodiment of FIG. 5;
fig. 7 is a schematic structural diagram of an embodiment of an optical transmission device according to the present invention;
fig. 8 is a schematic structural diagram of another embodiment of an optical transmission device according to the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, are intended to fall within the scope of the present invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present invention, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.
In addition, if there is a description of "first", "second", etc. in the embodiments 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 a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in 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 according to the present invention. Fig. 2 is a schematic cross-sectional view of the fiber circuit board unit of the embodiment of fig. 1. The present embodiment will be described with a configuration in which the number of optical fiber components is one.
The optical fiber circuit board unit 10 of the present embodiment includes a base 11, an optical fiber assembly 12, and a protector 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 protective member 13 is fixed on the base 11, and the protective member 13 includes a protective region 131, and the optical fiber assembly 12 is located in the protective region 131 of the protective member 13, so as to protect the optical fiber assembly 12 through the protective region 131. Specifically, the protecting member 13 extends in synchronization with the extension of the optical fiber assembly 12 to integrally protect the optical fiber assembly 12 outside the fiber outlet 111 and inside the protecting region 131. Wherein the protective element 13 is located within the base body 11 to a depth of more than 1 mm, for example: the specific depth of the protective member 13 in the base 11 may be 1 mm, 1.3 mm, 1.5 mm, 3 mm, 10 mm, 20 mm, etc., and may be determined based on the length of the base 11 in practical use, and is not limited herein.
In a specific application scenario, the substrate 11 includes at least two base layers 112, where the at least two base layers 112 are disposed on opposite sides of the optical fiber assembly 12 in a fitting manner to fix the optical fiber assembly 12. In a specific application scenario, the substrate 11 may include 4 substrates 112,4 substrates 112 that are attached to the periphery of 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 manner of the at least one optical fiber 121 may be side by side, stacked and staggered, stacked and arranged in an array or randomly, and the specific arrangement manner of 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 a single layer or in multiple layers. The multiple layers of the arrangement structures are stacked layer by layer, and the number of the optical fibers 121 in each layer can be different, and the arrangement positions can also be non-overlapping.
In the present embodiment, the surface of a part of the optical fiber 121 in the optical fiber assembly 12 is in contact with the protector 13. The protector 13 covers the optical fiber assembly 12 to protect the optical fiber 121 in the optical fiber assembly 12. The structure that the surface of part of the optical fibers 121 contacts the protecting member 13 in this embodiment is mainly applied to the case where the number of the optical fibers 121 in the optical fiber assembly 12 is small. However, in other embodiments, when the number of optical fibers 121 in the optical fiber assembly 12 is large, when all the optical fibers 121 are disposed in the protection area 131, there may be an excessive number of optical fibers 121, and there is a risk of disorder or scattering of the arrangement sequence, so the optical fiber assembly 12 may be coated by the base 11 in advance, and then the protection member 13 is added to the optical fiber assembly 12 and the base 11 for coating the same. At this time, the optical fiber assembly 12 is disposed at a distance from the protector 13. The specific position of the protecting member 23 according to the present invention may be determined based on the actual manufacturing method of the optical fiber circuit board unit 10, and is not limited herein.
With the above-described structure, the optical fiber circuit board unit 10 of the present embodiment is provided with the protector 13 fixed on the base 11, and the optical fiber assembly 12 is located in the protection area 131 of the protector 13. The fiber assembly 12 extending from the fiber outlet 111 is protected by a protection zone 131 of the protector 13. When the optical fiber assembly 12 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 action of the protection area 131, so that the occurrence of fracture of the optical fiber 121 is reduced, and the service life of the optical fiber 121 and the reliability of the optical fiber circuit board unit 10 are improved.
Referring to fig. 3-4, fig. 3 is a schematic structural diagram of another embodiment of an optical fiber circuit board unit according to the present invention. Fig. 4 is a schematic cross-sectional view of the fiber circuit board unit in the embodiment of fig. 3. The optical fiber circuit board unit 20 of the present embodiment includes: a base 21, an optical fiber assembly 22, and a protector 23. The base 21 includes a fiber outlet 211, the optical fiber assembly 22 is mounted on the base 21, and the base 21 and the optical fiber assembly 22 are attached. Specifically, the fiber optic assembly 22 is secured within the base 21 and extends out through the fiber exit 211.
The present embodiment is described taking the optical fiber assembly 22 including a plurality of optical fibers 221 arranged in a stacked arrangement as an example, but other structures in the optical fiber assembly 22 are the same as those in the above-described embodiment. Specifically, the positions of the base 21, the protector 23 and the optical fiber 221, the fixing manner of the protector 23 and the base 21, and the depth range of the protector 23 in the base 21 in this embodiment are the same as those of the above-described embodiments.
In the present embodiment, an adhesive layer 222 is provided between the optical fibers 221 fixedly disposed in the base 21. In a specific application scenario, an adhesive layer 222 is disposed between each layer of the plurality of optical fibers 221 that are stacked and arranged and between the optical fibers 221 of other layers adjacent to the optical fibers, so that in the process of arranging the optical fibers 221, after the lowermost optical fibers 221 are arranged and fixed, one layer of adhesive layer 222 is covered on the lowermost optical fibers 221, so that the second optical fibers 221 are continuously covered and fixed on the lowermost optical fibers 221, and the preparation of the plurality of optical fibers 221 that are stacked and arranged, that is, the optical fiber assembly 22, is realized layer by layer. And no glue layer 222 is provided between the layers of optical fibers 221 extending out of the fiber outlet 22 of the optical fiber assembly 22, so as to improve the flexibility of use of the optical fibers 221. In a specific application scenario, each optical fiber 221 in the matrix 21 and other adjacent optical fibers 221 may also be fixed by an adhesive layer 222, which is not limited herein.
In this embodiment, further, the protection area 231 in the protection member 23 has a closed cross section, that is, the protection member 23 is disposed around the entire circumference of the optical fiber assembly 22 to protect at least one optical fiber 221 in the optical fiber assembly 22. The protector 23 is fixed in the base 21 and covers the entire portion of the at least one optical fiber 221 extending out of the base 21. And the protecting member 23 also covers a portion of the at least one optical fiber 221 adjacent to the fiber outlet 211 and overlapping the base 21, so as to further protect the at least one optical fiber 221. It should be noted that, when the protector 23 is disposed at a distance from the optical fiber assembly 22 in other embodiments, a portion of the protector 23 located inside the base 21 is disposed at a distance from a portion of the optical fiber assembly 22 located inside the base 21; while the portion of the protective 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 long, the protecting member 23 covers the portion of the optical fiber assembly 22 extending out of the base 21, and the portion of the protecting member 23 gradually moving away 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 with the optical fiber assembly 22. When the length of the optical fiber assembly 22 extending out of the base 21 is short, the protecting member 23 may 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 passage therethrough, and the protection region 231 is the hollow passage. The optical fiber assembly 22 is disposed in the hollow passage to be protected by the protector 23. In a specific application scenario, the protecting member 23 may be a tube sleeve structure, and the protecting region 231 is a space in the tube sleeve structure, where the optical fiber assembly 22 is disposed, so as to protect at least one optical fiber 221 of the optical fiber assembly 22. In a specific application scenario, the protecting member 23 may be a heat-shrinkable tube with a closed cross section, the protecting region 231 is an in-tube space of the heat-shrinkable tube, and the optical fiber assembly 22 is disposed in the tube of the heat-shrinkable tube, so as 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 protecting member 23 may also be a flexible material with a closed section, so that the optical fiber assembly 22 is covered by the flexible material, so as to protect the at least one optical fiber 221, and the specific material of the protecting member 23 is not limited herein.
Optionally, a portion of the surface of the optical fiber assembly 22 contacts the protection member 23, that is, the inner side of the protection member 23 wraps around and contacts the optical fiber 221 outside the optical fiber assembly 22 to protect the optical fiber assembly 22. In other embodiments, however, a glue layer may be provided on the inner side of the protecting member 23 adjacent to the optical fiber assembly 22, so as to fix the protecting member 23 and the optical fiber assembly 22 through the glue layer, thereby further enhancing the fixation 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 protection member 23.
In a specific application scenario, the arrangement sequence between at least one optical fiber 221 may be arranged based on the chromatogram or other properties of each optical fiber 221, or may be arranged randomly. In a specific application scenario, when at least one optical fiber 221 needs to be arranged based on the chromatogram or other properties of each optical fiber 221, a glue layer 222 may also be disposed between at least one optical fiber 221, so as to fix the arrangement position between at least one optical fiber 221, thereby facilitating connection between the optical fiber 221 and the optical port. In other embodiments, no adhesion substance may be disposed between the at least one optical fiber 221, and the at least one optical fiber 221 may be movably disposed between them. When the optical fibers 221 are used, the arrangement sequence of at least one optical fiber 221 can be adjusted according to the actual requirement, so as to adapt to different use scenarios, and improve the flexibility of use of at least one optical fiber 221.
In one 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 in the figure) is disposed on a side of the cover film, which is close to the at least one optical fiber 221, so as to be attached to the optical fiber assembly 22, thereby fixing the optical fiber assembly 22. The cover film is also called a base film, plays a role of supporting the glue layer, and can be made of any material. In a specific application scenario, the substrate 21 may also be a material that has a certain viscosity at normal temperature (20-25 degrees celsius) or a specific temperature, and can bond and 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 by the rigid base layer. In a specific application scenario, the material of the base 21 may be rigid-flexible, that is, the material of the base 21 may include: the base layer, the covering film and the adhesive layer of the printed circuit board are suitable for different application scenes.
Through 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 is used for protecting the optical fiber assembly 22 in an omnibearing manner so as to reduce and/or block the omnibearing stress of the at least one optical fiber 221, thereby reducing the problem that the at least one optical fiber 221 in the optical fiber assembly 22 is easy to generate stress concentration at the fiber outlet 211. The protection member 23 of the present embodiment also covers the position where at least one optical fiber 221 extends from the base 21, and the protection member 23 is also disposed inside the base 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 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 service life of the optical fiber 221 and quality and reliability of the optical fiber circuit board unit 20.
Referring to fig. 5-6, fig. 5 is a schematic structural diagram of an optical fiber circuit board unit according to another embodiment of the present invention. Fig. 6 is a schematic cross-sectional view of the fiber circuit board unit in the embodiment of fig. 5. The optical fiber circuit board unit 30 of the present embodiment includes: a base 31, an optical fiber assembly 32, and a protector 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. Specifically, the optical fiber assembly 32 is disposed in the substrate 31 and extends out 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 in the optical fiber assembly 32 are the same as those in the above embodiment. Specifically, the positions of the base 31, the protector 33, and the optical fiber 321, the fixing manner of the protector 33 and the base 31, and the depth range of the protector 33 within the base 31 in the present embodiment are the same as those of the above-described embodiments.
In the present embodiment, the optical fiber 321 provided in the base 31 is fixed by the base 31. In a specific application scenario, a matrix 31 is disposed between each layer of the plurality of optical fibers 321 and between the optical fibers 321 of other layers adjacent to the layer of the plurality of optical fibers 321, so that in the process of arranging the optical fibers 321, after the lowermost optical fibers 321 are arranged and fixed, a layer of matrix 31 is covered on the lowermost optical fibers 321, so that the second layer of optical fibers 321 are continuously covered and fixed on the lowermost optical fibers 321, and the preparation of the plurality of optical fibers 321, namely the optical fiber assembly 32, in a layer-by-layer manner is realized. And the substrate 31 is not disposed between the layers of optical fibers 321 extending out of the fiber outlet 32 of the optical fiber assembly 32, so as to improve the flexibility of use of the optical fibers 321. In a specific application scenario, each optical fiber 321 in the matrix 31 and other adjacent optical fibers 321 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 with a glue layer or other fixing material to achieve a 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 a protection area for protecting the optical fiber assembly 32. Although the protection area 331 is a non-enclosed space, when the stress concentration occurs in the optical fiber assembly 32 of the fiber outlet 311, the protection area 331 with a non-enclosed cross section still provides a certain blocking or slowing effect, so as to reduce the problem of the stress concentration of the optical fiber 321 in the optical fiber assembly 32 at the fiber outlet 311. It will be appreciated that the two plates may be disposed in a crossed or perpendicular arrangement, so long as the optical fiber assembly 32 is located in the protection area 331 formed by the two plates together, the optical fiber assembly 32 may be protected. Obviously, based on the above analysis, the protector 33 may also comprise a single plate or multiple plates (more than two plates); specifically, a single plate is disposed on either side of the fiber optic assembly 32 to form a non-enclosed space that protects the fiber optic assembly 32. When the protecting member 33 is a plurality of plates, the plurality of plates are connected end to end in sequence, but are not closed, and the space between the plurality of plates is the protecting area; taking three plates as an example, the three plates are connected end to end in sequence and disposed on three adjacent sides of the optical fiber assembly 32 to form a non-enclosed space for protecting the optical fiber assembly 32.
In another specific embodiment, the protecting member 33 includes a hollow channel and a notch communicating with the hollow channel, and the non-closed space formed by the hollow channel and the notch together forms the protecting area 331 of the present embodiment, and the notch penetrates the protecting member 33 along the radial direction of the protecting member 33. In the present embodiment, the notch of the protection area 331 is a straight line, but in other embodiments, the notch of the protection area 331 may be a curve or a broken line, which is not limited herein. That is, the notch may be an elongated opening penetrating the protector 33, and an axis of the notch is parallel to or intersects with an axis of the protector 33; or the notch is a spiral, curved or folded 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 protector 33. Part of the structure of the protection member 33 is fixed in the base 31 through the fiber outlet 311, and covers the whole portion of the at least one optical fiber 321 extending out of the base 31. And the protecting member 33 also covers the part of the at least one optical fiber 321 close to the fiber outlet 311 and overlapped with the substrate 31, so that the at least one optical fiber 321 is further fully protected. Wherein the depth range of the protective member 33 disposed in the base 31 is greater than 1 mm. For example: the specific depth of the protector 33 disposed in the base 31 may be 1 mm, 1.3 mm, 1.5 mm, 3 mm, 10 mm, 20 mm, etc., and may be determined based on the length of the actual base 31, which is not limited herein.
In the present embodiment, the protector 33 is disposed at a distance from the optical fiber assembly 32. The entire outer side of the optical fiber assembly 32 is covered with the base 31. The protecting members 33 are disposed on opposite sides of the base 31 covering the optical fiber assembly 32 to form a non-enclosed space for protecting the optical fiber assembly 32. Specifically, the protector 33 is disposed at a distance 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 protecting member 33 located 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 assemblies 32, at least one optical fiber 321 in the optical fiber assemblies 32 can be coated by the substrate 31, so that the at least one optical fiber 321 is further fixed, and the stability of the optical fiber assemblies 32 is improved.
The structure in which the protecting member 33 is spaced from the at least one optical fiber 321 in this embodiment is mainly applied to the case where the number of optical fibers 321 in the single optical fiber assembly 32 is large. In a specific application scenario, when the number of optical fibers 321 in a single optical fiber assembly 32 is large, in order to avoid scattering at least one optical fiber 321 during the preparation process, the optical fiber assembly 32 may be coated by the matrix 31 during the preparation process of the optical fiber circuit board unit 30. Wherein, a glue 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 the scattering of the optical fibers 321 in the optical fiber assembly 32 during the preparation process.
In other embodiments, however, a portion of the optical fibers 321 of the fiber optic assembly 32 may have their surfaces in contact with the protective member 33. Thereby reducing the preparation steps of the optical fiber circuit board unit 30 and improving the preparation 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 protecting member 33, so as to fix the optical fibers with the base 31, thereby improving the stability and reliability of the optical fiber circuit board unit 30.
In other embodiments, a glue layer may be disposed between each two adjacent optical fibers 321 to fix the arrangement sequence between at least one optical fiber 321, so as to facilitate the connection between the optical fibers 322 and the optical ports. When the optical fiber circuit board unit 30 has flexibility requirements for at least one optical fiber 321, no adhesion material is disposed between at least one optical fiber 321, and at least one optical fiber 321 can be movably disposed. When the optical fiber 322 is used, the arrangement sequence of the at least one optical fiber 321 can be adjusted according to the actual requirement, so as to improve the flexibility of the at least one optical fiber 321. And are not limited herein.
In one 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 in the figure) is disposed on a side of the substrate 31 near the optical fiber assembly 32, so as to be attached to the optical fiber assembly 32, thereby fixing the optical fiber assembly 32. The base 31 is provided with a glue layer (not shown) on a side close to the at least one optical fiber 321, so as to be attached to the at least one optical fiber 321, thereby fixing the at least one optical fiber 321. In a specific application scenario, the substrate 31 may also be a material that has a certain viscosity at normal temperature (20-25 degrees celsius) or a specific temperature, and can bond and fix the optical fiber assembly 32, which is not limited herein.
When the material of the base 31 is a rigid material, the base 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, 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 be rigid-flexible, that is, the material of the substrate 31 may include: the base layer, the covering film and the adhesive layer of the printed circuit board are suitable for different application scenes.
In a specific application scenario, when the number of the optical fiber assemblies 32 is plural, the structure of the optical fiber assemblies 32 may be the same as that of the optical fiber assemblies 32 described in the present embodiment, or may be the same as that of the optical fiber assemblies 22 in the embodiment of fig. 2. And are not limited herein.
Through the above structure, the optical fiber circuit board unit 30 of the present embodiment has the following beneficial effects: by providing the fiber optic assembly 32 with a protective region 331 having a non-enclosed cross-section, a certain blocking or dampening effect is provided to at least one optical fiber 321 in the fiber optic assembly 32 while reducing the material cost of the protective member 331. And the matrix 31 is further disposed between the protecting member 33 and at least one optical fiber 321, so as to fix a large number of optical fibers 321 in advance, thereby reducing the occurrence of scattering of the optical fibers 321 in the preparation process of the optical fiber circuit board unit 30. The protection member 33 of the present embodiment also covers the position of the at least one optical fiber 321 extending from the base 31, and along with the at least one optical fiber 321 being disposed inside the base 31, further protects the at least one optical fiber 321 at the fiber outlet 311, so as to reduce the occurrence of breakage of the at least one optical fiber 321 caused by stress concentration of the at least one optical fiber 321 in the optical fiber assembly 32, thereby improving the service life of the optical fiber 321 and the quality of the optical fiber circuit board unit 30.
Referring to fig. 7-8, fig. 7 is a schematic structural diagram of an embodiment of an optical transmission device according to the present invention, and fig. 8 is a schematic structural diagram of another embodiment of an optical transmission device according to the present invention. In this embodiment, the optical transmission device includes an optical fiber circuit board unit 10 and an optical port 200 provided at an end of the optical fiber circuit 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-described embodiment of the optical fiber circuit board unit of the present invention, and the detailed description thereof will be omitted herein.
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. Wherein, for each optical fiber circuit board unit 10, the optical fibers extending from both ends thereof can be connected to the circuit boards with the same number or different numbers in the optical docking device in different manners.
In one application scenario, the circuit boards of the optical docking device include a main circuit board 300 and a sub-circuit board 400. As shown in fig. 7, one end of the optical fiber circuit board unit 10 is connected to one main circuit board 300 through the optical port 200, and the other end is connected to a plurality of sub circuit boards 400 through the optical port 200, respectively. In this way, the optical signals 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 circuit board unit 10 may be connected to a different plurality of sub-circuit boards 400 through the optical ports 200, thereby realizing the mutual optical connection of the sub-circuit boards 400 at different positions through the optical ports 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 for connecting only one optical fiber, and the multi-fiber connector can be a connector for connecting a plurality of optical fibers, specifically, the number of optical fibers that can be connected by different multi-fiber connectors is different, for example, 4, 8, 12, 24, etc.
Among them, in a fiber optic transmission device having a large density, a multi-fiber connector can be used. Specifically, at least one optical fiber can be combined into a group to be connected with a corresponding multi-fiber connector, for example, glue can be used for bonding the optical fibers together, a protective sleeve, such as a plastic protective sleeve, can be further arranged on the periphery of each group of optical fibers, a certain protection effect can be achieved on the optical fibers, and label paper can be attached to the protective sleeve so as to mark the information of the installation position and the like of the group of optical fibers.
Further, the invention also provides an optical-electrical hybrid circuit board, which can comprise an optical fiber circuit board unit and circuit wires arranged on the optical fiber circuit board unit.
The optical fiber circuit board unit in this embodiment has the same structure as that in the above-described embodiment of the optical fiber circuit board unit of the present invention, and the detailed description thereof will be omitted herein.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (8)
1. An optical fiber circuit board unit comprising:
a substrate including a fiber outlet;
at least one optical fiber assembly mounted on the base and extending out of the fiber outlet; it is characterized in that the method comprises the steps of,
the optical fiber circuit board unit further comprises a protection piece fixed on the base body; the protection piece is made of flexible materials;
wherein the protective member comprises a protective region, at least one of the optical fiber assemblies is positioned in the protective region, and the protective member is fixed in the matrix; wherein the protective member covers at least one part of the optical fiber assembly extending out of the matrix and covers at least one part of the optical fiber assembly, which is close to the fiber outlet and overlaps with the matrix;
the optical fiber assembly comprises a plurality of optical fibers which are arranged in a stacking way, and the matrix is arranged between each layer of the optical fibers which are arranged in the stacking way and the optical fibers of other layers adjacent to the optical fibers;
the protection area is provided with a non-closed section, the protection piece comprises two plate bodies, the two plate bodies are arranged in parallel or in a crossed manner, and the protection area is a non-closed space formed by the two plate bodies; or the protection piece comprises a hollow channel which penetrates through the protection piece and a notch which is communicated with the hollow channel, and the protection area is a non-closed space formed by the hollow channel and the notch together.
2. The fiber circuit board unit of claim 1, wherein the notch extends through the protective member and is in a straight line, a curved line, or a broken line.
3. The fiber circuit board unit according to claim 1 or 2, wherein the optical fiber assembly includes at least one optical fiber, and a portion of a surface of the optical fiber is in contact with the protective member.
4. The fiber circuit board unit according to claim 1 or 2, wherein the fiber assembly comprises at least one optical fiber, the optical fiber being disposed in spaced relation to the protector.
5. The optical fiber circuit board unit according to claim 1 or 2, wherein,
the protective piece is fixed in the matrix; wherein the depth range of the protection piece in the matrix is greater than 1 millimeter.
6. The optical fiber circuit board unit according to claim 1 or 2, wherein,
the base body comprises at least two base layers, and at least two base layers are attached to two opposite sides of the at least one optical fiber assembly to fix the at least one optical fiber assembly.
7. An optical transmission device, characterized in that the optical transmission device comprises an optical fiber circuit board unit according to any one of claims 1 to 6 and an optical port provided at an end of the optical fiber circuit board unit, the optical port being for connection with an optical docking device for optical signal transmission.
8. An opto-electronic hybrid circuit board comprising the optical fiber circuit board unit of any one of claims 1-6 and circuit conductors disposed on the optical fiber circuit 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 true CN114578488B (en) | 2024-03-12 |
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