Optical fiber flexible board and optical fiber communication device

Abstract

The utility model discloses a kind of optical fiber flexible plate and optical fiber communication equipment, it is related to optical fiber communication technical field, the optical fiber flexible plate includes substrate layer, first optical fiber layer, first adhesive layer, second optical fiber layer and second adhesive layer, substrate layer is set in strip shape, and is flexible material;First optical fiber layer is located in one side of substrate layer;First adhesive layer is located between substrate layer and first optical fiber layer, and connects first optical fiber layer with substrate layer;Second optical fiber layer is located in one side of substrate layer, which is away from first optical fiber layer;Second adhesive layer is located between substrate layer and second optical fiber layer, and connects second optical fiber layer with substrate layer. Can under the premise of not increasing substrate layer, improve optical fiber integrated density. And ensure the connecting strength between optical fiber layer and substrate layer, avoid delamination phenomenon in bending or vibration process. Reduce interlayer relative slip, reduce the shear stress that optical fiber bears under dynamic bending environment, it is favorable to improve the bending reliability and service life of optical fiber flexible plate.

Description

Technical Field

[0001] This utility model relates to the field of optical fiber communication technology, and in particular to an optical fiber flexible plate and an optical fiber communication device. Background Technology

[0002] In fields such as communications, data centers, medical devices, and consumer electronics, the demand for optical interconnects between internal modules of equipment is increasing. Traditional fiber optic cabling methods typically involve wrapping loose optical fibers or fiber ribbons in tubing or simply attaching or binding them inside the equipment. This approach suffers from problems such as inaccurate routing, large space occupation, and poor reliability in dynamic bending environments.

[0003] In related technologies, to improve integration, a scheme of embedding optical fibers on flexible substrates has been proposed. However, most current embedding schemes have limitations. On the one hand, the integration of current embedding schemes is low, typically with only one row of optical fibers arranged on one side or in the middle layer of the substrate. The capacity per unit width of optical fiber is limited, resulting in low wiring density. On the other hand, to achieve multi-channel optical signal transmission, current embedding schemes often require stacking multiple flexible boards with single-sided fiber arrangement or using a multi-layer substrate lamination structure. This directly leads to an increase in overall thickness and weight, violating the original intention of making flexible devices thinner and lighter. Moreover, multi-layer stacked structures mean more material consumption and more complex manufacturing processes, driving up costs. In addition, current embedding schemes have low bending reliability. When the multi-layer stacked structure is bent, slight relative slippage may occur between the layers, generating shear stress on the embedded optical fibers, which poses a risk of breakage under long-term use.

[0004] Therefore, existing technologies lack a low-cost solution that can achieve high-density fiber integration within an extremely thin structure while ensuring excellent bending reliability. Utility Model Content

[0005] The main purpose of this invention is to propose a flexible fiber optic board and a fiber optic communication device, which aims to solve the technical problems of low fiber optic integration density and heavy structure and poor bending reliability caused by stacking of flexible boards with single-sided fiber optic cabling in the prior art.

[0006] To achieve the above objectives, the fiber optic flexible board proposed in this utility model includes a substrate layer, a first fiber layer, a first adhesive layer, a second fiber layer, and a second adhesive layer. The substrate layer is arranged in a strip shape and is made of flexible material. The first fiber layer is disposed on one side of the substrate layer. The first adhesive layer is located between the substrate layer and the first fiber layer and connects the first fiber layer and the substrate layer. The second fiber layer is disposed on the side of the substrate layer opposite to the first fiber layer. The second adhesive layer is located between the substrate layer and the second fiber layer and connects the second fiber layer and the substrate layer. Both the first fiber layer and the second fiber layer include multiple individual optical fibers.

[0007] In one embodiment, each of the individual optical fibers in the first optical fiber layer and the second optical fiber layer is spaced apart and distributed in parallel on the surface of the substrate layer.

[0008] In one embodiment, each of the single optical fibers includes two extensions and an embedded portion, the embedded portion being located between the two extensions, the extensions extending out of the substrate layer, and the embedded portion being distributed parallel to the substrate layer.

[0009] In one embodiment, the embedded portion is at least partially distributed in a straight line on the surface of the substrate layer; and / or, the embedded portion is at least partially distributed in a curved line on the surface of the substrate layer.

[0010] In one embodiment, the substrate layer is provided with positioning holes, which are misaligned with the single optical fiber.

[0011] In one embodiment, the positioning holes are spaced apart along the periphery of the substrate layer.

[0012] In one embodiment, at least two extensions of the single optical fiber are located on the same side of the substrate layer; and / or, at least two extensions of the single optical fiber are located on opposite sides of the substrate layer; and / or, at least two extensions of the single optical fiber are located on adjacent sides of the substrate layer.

[0013] In one embodiment, the optical fiber flexible plate further includes a first adhesive layer and a second adhesive layer; the first adhesive layer covers the side of the first optical fiber facing away from the substrate layer and is connected to the first adhesive layer, and the second adhesive layer covers the side of the second optical fiber facing away from the substrate layer and is connected to the second adhesive layer.

[0014] In one embodiment, a cable is further provided within the first optical fiber layer and / or the second optical fiber layer, and the cable is arranged in parallel with a single optical fiber within the first optical fiber layer and / or the second optical fiber layer.

[0015] This utility model also proposes an optical fiber communication device, which includes an optical fiber flexible plate as described in any of the above embodiments.

[0016] The fiber optic flexible board proposed in this invention includes a substrate layer, a first fiber layer, a first adhesive layer, a second fiber layer, and a second adhesive layer. The substrate layer is strip-shaped and made of flexible material. The first fiber layer is disposed on one side of the substrate layer. The first adhesive layer is located between the substrate layer and the first fiber layer, connecting the first fiber layer and the substrate layer. The second fiber layer is disposed on the side of the substrate layer opposite to the first fiber layer. The second adhesive layer is located between the substrate layer and the second fiber layer, connecting the second fiber layer and the substrate layer. By setting the first fiber layer and the second fiber layer on both sides of the substrate layer, this invention can double the number of optical fibers per unit width without increasing the number of substrate layers, significantly improving the fiber integration density. The first adhesive layer and the second adhesive layer firmly connect the first fiber layer and the second fiber layer to both sides of the substrate layer, ensuring the connection strength between the fiber layer and the substrate layer and preventing delamination during bending or vibration. This double-sided fiber-laying structure design, compared with traditional single-sided fiber-laying or multi-layer substrate lamination schemes, achieves high-density integration while effectively controlling the overall thickness and weight, better meeting the development needs of thinner and lighter flexible devices. Meanwhile, since the optical fiber layer is directly set on the surface of the substrate layer and tightly bonded by the adhesive layer, the possibility of relative slippage between layers is reduced, thereby reducing the shear stress borne by the optical fiber under dynamic bending environment, which is beneficial to improving the bending reliability and service life of the optical fiber flexible board. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0018] Figure 1 A schematic diagram of a structural embodiment of the flexible fiber optic plate provided by this utility model; Figure 2 for Figure 1 A magnified view of a section at point A in the middle; Figure 3 for Figure 1 Exploded view of the fiber optic flexible plate; Figure 4 for Figure 3 An exploded view of the flexible fiber optic panel after the first and second adhesive layers are hidden.

[0019] Explanation of icon numbers: 100. Flexible fiber optic board; 1. Substrate layer; 1a. Positioning hole; 21. First fiber layer; 22. Second fiber layer; 20. Single fiber; 201. Extension; 202. Embedded portion; 31. First adhesive layer; 32. Second adhesive layer; 41. First adhesive layer; 42. Second adhesive layer.

[0020] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0022] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0023] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0024] This utility model proposes a fiber optic flexible board 100, which can be applied to, but is not limited to, fiber optic communication equipment such as data centers and communication systems, high-density chassis, and switches.

[0025] Please see Figures 1 to 4In one embodiment of this utility model, the optical fiber flexible plate 100 includes a substrate layer 1, a first optical fiber layer 21, a first adhesive layer 31, a second optical fiber layer 22, and a second adhesive layer 32. The substrate layer 1 is strip-shaped and made of flexible material. The first optical fiber layer 21 is disposed on one side of the substrate layer 1. The first adhesive layer 31 is located between the substrate layer 1 and the first optical fiber layer 21 and connects the first optical fiber layer 21 and the substrate layer 1. The second optical fiber layer 22 is disposed on the side of the substrate layer 1 opposite to the first optical fiber layer 21. The second adhesive layer 32 is located between the substrate layer 1 and the second optical fiber layer 22 and connects the second optical fiber layer 22 and the substrate layer 1. The first optical fiber layer 21 and the second optical fiber layer 22 each include a plurality of single optical fibers 20.

[0026] In this embodiment, the fiber optic flexible board 100 includes a strip-shaped flexible substrate layer 1, a first fiber layer 21, a first adhesive layer 31, a second fiber layer 22, and a second adhesive layer 32. It enables optical interconnection within communication equipment and maintains signal transmission under dynamic bending conditions. The substrate layer 1 is a strip-shaped flexible insulating material, optionally polyimide, liquid crystal polymer, or polyester film. It is bendable and provides mechanical support for subsequent layers, forming a neutral surface base during bending. The first fiber layer 21 is located on the front side of the substrate layer 1 and is composed of multiple single optical fibers 20 arranged in parallel or cross-arranged patterns. This embodiment does not limit the arrangement of the individual optical fibers 20. The optical fiber has a quartz cladding and polymer coating structure, which provides an optical signal channel on the front side of the substrate layer 1. The first adhesive layer 31 is located between the substrate layer 1 and the first optical fiber layer 21. The material can be a thermosetting epoxy or acrylic system, etc. After curing, it bonds the first optical fiber layer 21 to the surface of the substrate layer 1. Its elastic modulus is lower than that of the optical fiber cladding, and it is used to convert the relative displacement between the optical fiber and the substrate layer 1 into shear deformation within the adhesive layer, preventing the optical fiber from directly bearing shear. Simultaneously, it absorbs the interlayer slippage tendency through its own deformation, allowing the optical fiber and the substrate layer 1 to bend synchronously. The second optical fiber layer 22 is located on the back side of the substrate layer 1, with the same structure as the first optical fiber layer 21. Its function is to increase the optical fiber capacity without increasing the number of substrate layers 1. The two optical fiber layers can be aligned or misaligned in the thickness direction; this embodiment does not limit this. Similarly, the second adhesive layer 32 is located between the substrate layer 1 and the second optical fiber layer 22. The material is the same as the first adhesive layer 31. After curing, the second optical fiber layer 22 is bonded to the back of the substrate layer 1 to ensure symmetrical stress on both sides and prevent additional torque caused by modulus difference during bending. After the two adhesive layers are cured, they together sandwich the substrate layer 1 in the middle. The neutral axis of the overall structure falls near the center of the substrate layer 1. When bending, the tensile and compressive strains on both sides of the optical fiber are in opposite directions, and the strains are partially canceled out.

[0027] In summary, in this embodiment, the substrate layer 1 provides a mechanical framework, the first adhesive layer 31 and the second adhesive layer 32 on both sides provide fixation and strain buffering, and the first optical fiber layer 21 and the second optical fiber layer 22 arranged on both sides increase the number of optical channels. Since the optical fiber is directly located on the surface of the substrate layer 1 and covered by the adhesive layer, there is no additional slip surface between the layers. The shear stress generated by bending is mainly borne by the adhesive layer and transformed into internal shear deformation. The optical fiber itself only bends synchronously with the substrate layer 1, avoiding the lateral shearing of the optical fiber caused by interlayer slip in the traditional multilayer stacked structure. At the same time, double-sided fiber arrangement only increases the thickness of the optical fiber and adhesive layer on both sides. The total thickness is the thickness of the substrate layer 1 plus the outer diameter of the optical fiber on both sides plus the thickness of the adhesive layer on both sides. No additional substrate layer 1 is introduced, and the overall thickness and weight are kept within the acceptable range of flexible devices, achieving high density, thinness and improved bending reliability.

[0028] Further, please refer to Figures 1 to 4 In one embodiment of the present invention, each individual optical fiber 20 in the first optical fiber layer 21 and the second optical fiber layer 22 is spaced apart and distributed in parallel on the surface of the substrate layer 1.

[0029] In this embodiment, the individual optical fibers 20 of the first optical fiber layer 21 and the second optical fiber layer 22 extend parallel to the surface of the substrate layer 1, and a gap is maintained between adjacent optical fibers in the same layer. The gap area is filled by the corresponding adhesive layer. The existence of the gap allows the optical fibers in the same layer to deform independently with the substrate layer 1 when bent, avoiding micro-bending caused by mutual compression. At the same time, it allows the adhesive layer to form a continuous bridge between the optical fibers, uniformly distributing the stress in the layer to the substrate layer 1. The parallel direction of the two optical fibers is consistent with the longitudinal direction of the substrate layer 1, ensuring that the fiber length is consistent when the strip board is wound, unwound, or moved around the axis, reducing the additional loss introduced by the length difference. The gap width is determined by the system channel density and bending reliability, and is achieved by adjusting the center distance between adjacent optical fibers during the wiring diagram design stage. In this way, multiple independent optical channels are formed on the board surface, and the strain state of each channel is consistent when bent. The overall bending stiffness does not increase locally due to the stacking of optical fibers, thereby maintaining a balance between high-density wiring and bending flexibility without increasing the thickness.

[0030] Further, please refer to Figures 1 to 4 In one embodiment of the present invention, each single optical fiber 20 includes two extensions 201 and an embedded portion 202. The embedded portion 202 is located between the two extensions 201. The extensions 201 extend out of the substrate layer 1. The embedded portions 202 of the multiple single optical fibers 20 are distributed in parallel on the substrate layer 1.

[0031] In this embodiment, each single optical fiber 20 is divided into two extensions 201 and one embedded portion 202. The embedded portion 202 is located between the two extensions 201, and the embedded portion 202 falls entirely within the projection range of the corresponding surface of the substrate layer 1. The extensions 201 extend along the optical fiber axis from the end edge of the substrate layer 1. The embedded portion 202 is fixed to the surface of the substrate layer 1 by a corresponding adhesive layer, forming a section that bends synchronously with the substrate layer 1. The extensions 201 extend beyond the substrate layer 1 and are used to dock with external optical devices or another section of flexible optical fiber 100. The embedded portions 202 of each single optical fiber 20 in the same layer are arranged parallel to each other and spaced apart. The spaced areas are still filled with adhesive layers, so that the substrate layer 1 maintains a continuous and smooth neutral surface when bent, avoiding abrupt changes in stiffness due to local concentration of optical fibers. In this way, the optical path within the board achieves both rigid fixation and flexible overhang. The embedded portion 202 ensures that bending strain is jointly borne by the substrate layer 1 and the adhesive layer, while the extension portion 201 provides the bare fiber length for subsequent termination operations. This eliminates the need to remove the coating layer during assembly, thereby simplifying the process and reducing the risk of damage in the field. It satisfies both bending reliability and field maintainability.

[0032] Further, please refer to Figures 1 to 4 In one embodiment of the present invention, the embedded portion 202 is at least partially distributed in a straight line on the surface of the substrate layer 1; and / or, the embedded portion 202 is at least partially distributed in a curved line on the surface of the substrate layer 1.

[0033] In this embodiment, each individual optical fiber 20 retains the segmented structure design of the extension portion 201 and the embedded portion 202 of the previous embodiment, and further sets the orientation of the embedded portion 202 on the surface of the substrate layer 1 to one of the following three cases: all embedded portions 202 are straight, all embedded portions 202 are curved, and a portion of the same embedded portion 202 is straight and another portion is curved. The axis of the straight section is consistent with the edge of the substrate layer 1, and uniform strain is generated when bending; the curved section is a smooth arc or wavy trajectory, which absorbs the expansion or torsional displacement of the substrate layer 1 through its own geometric deformation and meets the bending radius design of the optical fiber. Within the same flexible board, the embedded portion 202 of each individual optical fiber 20 can independently choose a straight or curved orientation, or a straight and curved transition can occur successively within the same optical fiber, with the transition point located on the surface of the substrate layer 1 and completely covered by the adhesive layer. Regardless of the orientation combination, the embedded parts 202 are always arranged in parallel and spaced intervals, with the spaced areas filled by an adhesive layer to prevent the optical fibers in the same layer from contacting each other, and the neutral surface of the substrate layer 1 is continuous. Through single or mixed straight and / or curved arrangements, the optical path within the board can achieve straight laying with the shortest path while maintaining high-density fiber laying on both sides, and can release strain with curves in areas where length margin is required, without adding an additional substrate layer 1 or external sleeve.

[0034] Further, please refer to Figures 1 to 4In one embodiment of this utility model, a positioning hole 1a is provided on the substrate layer 1, and the positioning hole 1a is misaligned with the single optical fiber 20.

[0035] In this embodiment, a positioning hole 1a is formed on the substrate layer 1, penetrating the thickness direction of the substrate layer 1. The central axis of the positioning hole 1a does not coincide with the projection of the central axis of any single optical fiber 20 onto the surface of the substrate layer 1, and a certain distance is maintained between the edge of the hole and the outer edge of the nearest optical fiber. The positioning hole 1a is used to insert a positioning pin during cutting, end face grinding, or subsequent assembly with a rigid plate, so that the substrate layer 1 maintains a unique geometric relationship with the processing fixture or docking component. Due to the misalignment of the hole and the optical fiber, the optical fiber is prevented from blocking the positioning hole 1a, thus preventing the positioning pin from being inserted. The adhesive layer extends continuously around the hole, firmly bonding the area of ​​the substrate layer 1 between the edge of the hole and the optical fiber, preventing cracks around the hole from propagating towards the optical fiber. In this way, the board maintains a double-sided high-density optical channel while obtaining an interface for rapid and accurate positioning with external tooling or printed circuit boards, without affecting the integrity of the optical fiber, thereby meeting the needs of subsequent automated assembly or on-site disassembly and maintenance.

[0036] Further, please refer to Figures 1 to 4 In one embodiment of the present invention, the positioning holes 1a are distributed at intervals along the periphery of the substrate layer 1.

[0037] In this embodiment, all positioning holes 1a are arranged around the periphery of the substrate layer 1, spaced apart along the periphery. The center of each hole is located inside the outer edge of the substrate layer 1 and maintains a continuous insulating distance from the nearest optical fiber. This periphery distribution allows the positioning holes 1a to avoid the central fiber-laying area of ​​the substrate layer 1, enabling them to be processed during cutting, punching, or laser cutting without additional drilling. The holes are located in areas that would otherwise be obstructed by clamps or screws during subsequent installation, thus not occupying effective fiber-laying area or disrupting the continuous channel of the double-sided optical fibers. Because the periphery is far from the optical fiber, the concentrated deformation of the substrate layer 1 caused by the insertion of positioning pins or the tightening of screws is absorbed by the periphery, maintaining the flexibility of the central high-density optical path. Through this "peripheral spaced distribution" arrangement, the board maintains its thinness and high channel density while achieving rapid and accurate positioning with external structural components, without applying additional stress to the optical fiber, thus meeting the requirements of automated assembly and repeated disassembly / reassembly scenarios.

[0038] Further, please refer to Figures 1 to 4 In one embodiment of the present invention, the two extensions 201 of at least one single optical fiber 20 are located on the same side of the substrate layer 1; and / or, the two extensions 201 of at least one single optical fiber 20 are located on opposite sides of the substrate layer 1; and / or, the two extensions 201 of at least one single optical fiber 20 are located on adjacent sides of the substrate layer 1.

[0039] In this embodiment, three interchangeable or coexisting fiber routing schemes are provided for the exit positions of the extensions 201 at the edge of the substrate layer 1: First, both extensions 201 of the same single optical fiber 20 are located on the same side of the substrate layer 1; second, the two extensions 201 of the same single optical fiber 20 are located on two opposite sides of the substrate layer 1; third, the two extensions 201 of the same single optical fiber 20 are located on two adjacent sides of the substrate layer 1. The first scheme forms a "U-shaped" trace within the board, suitable for compact spaces requiring transmission and reception connections on the same side; the second scheme forms a "straight-through" trace, which can span the longest dimension of the device, reducing diagonal wiring requirements; the third scheme forms an "L-shaped" trace, suitable for distribution around right-angle structures. These three schemes can coexist on the same substrate layer 1, with each extension 201's exit position avoiding the positioning hole 1a and maintaining a distance from the nearest optical fiber to ensure that bending does not affect each other. With the option to combine same-side, opposite-side, and adjacent-side optical paths, the optical path within the board can adapt to complex equipment wiring environments such as same-side transmission and reception, diagonal crossing, or right-angle turning, while maintaining double-sided high-density fiber optic cabling, without the need to add additional adapters or extend the path.

[0040] Further, please refer to Figures 1 to 4 In one embodiment of the present invention, the optical fiber flexible plate 100 further includes a first adhesive layer 41 and a second adhesive layer 42; the first adhesive layer 41 covers one side of the first optical fiber facing away from the substrate layer 1 and is connected to the first adhesive layer 31, and the second adhesive layer 42 covers one side of the second optical fiber facing away from the substrate layer 1 and is connected to the second adhesive layer 32.

[0041] In this embodiment, the fiber optic flexible board 100, based on the five-layer stacked structure of the above embodiment, adds a first adhesive layer 41 and a second adhesive layer 42. The first adhesive layer 41 covers the outer surface of the first fiber layer 21 facing away from the substrate layer 1 and is integrally connected with the first adhesive layer 31, completely embedding the first fiber layer 21; the second adhesive layer 42 covers the outer surface of the second fiber layer 22 facing away from the substrate layer 1 and is integrally connected with the second adhesive layer 32, completely embedding the second fiber layer 22. The materials of the two adhesive layers are the same as those of the corresponding adhesive layers, and after curing, they form a continuous elastomer, so that the surfaces of the optical fiber in all directions are surrounded by the adhesive, isolating it from external air, moisture, and mechanical contact. This "fully embedded" structure, through the continuity of the adhesive layer and the corresponding adhesive layer, disperses the point contact stress that may be generated by the external environment into surface distributed pressure, avoiding micro-bending of the optical fiber surface; at the same time, the adhesive layer increases the total thickness of the double-sided fiber-laying area, but because its modulus is lower than that of common rigid packaging materials, when bent, the substrate layer 1 is still the neutral surface, and the adhesive layer itself undergoes shear deformation to protect the optical fiber. Through the connection and cooperation of the first adhesive layer 41, the second adhesive layer 42 and their respective adhesive layers, the board body achieves environmental isolation and mechanical buffering functions while maintaining its thinness and high channel density, making it suitable for complex equipment wiring scenarios with high humidity, high dust or repeated plugging and unplugging.

[0042] Further, please refer to Figures 1 to 4 In one embodiment of the present invention, a cable is further provided in the first optical fiber layer 21 and / or the second optical fiber layer 22, and the cable is arranged in parallel with the single optical fiber 20 in the first optical fiber layer 21 and / or the second optical fiber layer 22.

[0043] In this embodiment, cables are placed in parallel within the first optical fiber layer 21 and / or the second optical fiber layer 22. The cables are parallel to the single optical fiber 20 in the same layer and are fixed by the same adhesive layer. The outer diameter of the cable is the same as or close to the outer diameter of the optical fiber, so that the parallel section has no additional protrusion in the thickness direction, keeping the board surface flat. The cable route is parallel to the optical fiber in the same layer, and can be parallel throughout or merged in sections. The interval between the two is determined by the wiring density requirements, which is not limited in this embodiment. The interval area is filled by the adhesive layer to ensure that the cable and the optical fiber do not come into contact with each other. By means of parallel optoelectronic transmission in the same layer, the optical fiber flexible board 100 of this embodiment has the ability to transmit power or low-speed electrical signals while transmitting optical signals, reducing the equipment space occupied by independent cables. When bent, the cable and the optical fiber deform together with the neutral surface of the substrate layer 1. The adhesive layer converts the relative displacement of the two into its own shear strain, avoiding friction or additional tension between the optoelectronic components. This structure enables the same flexible board to realize the dual functions of optical interconnection and power transmission, adapting to scenarios that require remote power supply or mixed signals, without adding an additional substrate layer 1 or external wiring harness.

[0044] This utility model also proposes an optical fiber communication device, which includes an optical fiber flexible plate 100 as described in any of the above embodiments. Since this optical fiber communication device adopts all the technical solutions of all the above embodiments, it possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated upon here.

[0045] In this embodiment, by employing the aforementioned flexible fiber optic panel 100 design, the fiber optic communication device achieves high-density fiber integration, significantly improving communication efficiency. This design can meet the demands of high-bandwidth, high-speed data transmission, making it particularly suitable for scenarios requiring large-scale data transmission, such as data centers and communication systems. Through its compact design, the fiber optic communication device can integrate more optical fibers and cables within a limited space, significantly improving space utilization. This design reduces the device's size, improving portability and installation efficiency.

[0046] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A flexible fiber optic board, characterized in that, The fiber optic flexible plate includes: The substrate layer (1) is arranged in a strip shape and is made of a flexible material; The first optical fiber layer (21) is disposed on one side of the substrate layer (1); The first adhesive layer (31) is located between the substrate layer (1) and the first optical fiber layer (21) and connects the first optical fiber layer (21) and the substrate layer (1). The second optical fiber layer (22) is disposed on the side of the substrate layer (1) opposite to the first optical fiber layer (21); and The second adhesive layer (32) is located between the substrate layer (1) and the second optical fiber layer (22) and connects the second optical fiber layer (22) and the substrate layer (1). The first optical fiber layer (21) and the second optical fiber layer (22) each include multiple single optical fibers (20).

2. The fiber optic flexible plate as described in claim 1, characterized in that, Each of the single optical fibers (20) in the first optical fiber layer (21) and the second optical fiber layer (22) is spaced apart and distributed in parallel on the surface of the substrate layer (1).

3. The fiber optic flexible plate as described in claim 1, characterized in that, Each of the single optical fibers (20) includes two extensions (201) and an embedded portion (202), the embedded portion (202) being located between the two extensions (201), the extensions (201) extending out of the substrate layer (1), and the embedded portions (202) of the plurality of single optical fibers (20) being distributed in parallel on the substrate layer (1).

4. The fiber optic flexible plate as described in claim 3, characterized in that, The embedded portion (202) is at least partially distributed in a linear pattern on the surface of the substrate layer (1); And / or, the embedded portion (202) is at least partially distributed in a curved shape on the surface of the substrate layer (1).

5. The fiber optic flexible plate as described in claim 1, characterized in that, The substrate layer (1) is provided with a positioning hole (1a), which is offset from the single optical fiber (20).

6. The fiber optic flexible plate as described in claim 5, characterized in that, The positioning holes (1a) are spaced apart along the periphery of the substrate layer (1).

7. The optical fiber flexible plate as described in claim 1, characterized in that, At least one of the two extensions (201) of the single optical fiber (20) is located on the same side of the substrate layer (1); And / or, at least one of the two extensions (201) of the single optical fiber (20) is located on opposite sides of the substrate layer (1); And / or, at least two extensions (201) of the single optical fiber (20) are located on adjacent side edges of the substrate layer (1).

8. The flexible fiber optic plate according to any one of claims 1 to 7, characterized in that, The fiber optic flexible plate also includes a first adhesive layer (41) and a second adhesive layer (42). The first adhesive layer (41) covers the side of the first optical fiber facing away from the substrate layer (1) and is connected to the first adhesive layer (31). The second adhesive layer (42) covers the side of the second optical fiber facing away from the substrate layer (1) and is connected to the second adhesive layer (32).

9. The flexible fiber optic plate according to any one of claims 1 to 7, characterized in that, A cable is also provided in the first optical fiber layer (21) and / or the second optical fiber layer (22), and the cable is arranged in parallel with the single optical fiber (20) in the first optical fiber layer (21) and / or the second optical fiber layer (22).

10. An optical fiber communication device, characterized in that, The optical fiber communication device includes an optical fiber flexible plate as described in any one of claims 1 to 9.

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