Ultrahigh-density optical fiber ribbon core wire and production method thereof

Abstract

The invention relates to the field of optical fiber and cable equipment, and discloses an ultrahigh-density optical fiber ribbon core wire and a production method thereof, an optical fiber bundle of the ultrahigh-density optical fiber ribbon core wire is a regular triangular optical fiber bundle composed of optical fibers with different chromatograms, a filling rope is arranged in a middle hole of the regular triangular optical fiber bundle, and the middle hole is coated with a first layer of silicone oil lubricant; the outer surface of the regular triangular optical fiber bundle is coated with a first layer of acrylic resin, and the surface of the first layer of acrylic resin is coated with a second layer of silicone oil lubricant; and a second layer of colored acrylic resin is coated on the surface of the second layer of silicone oil lubricant. According to the production method of the optical fiber ribbon core wire, through the steps of regular triangle arrangement, primary curing, secondary curing and ribbon forming, optical fiber convergence can be achieved, the density of the combined fiber core of the optical fiber core wire is high, the capacity bottleneck of a traditional optical cable is solved, the combined strength of the optical fiber core wire is high, the application scene is wider, and the service life is longer.

Description

Technical Field

[0001] The present invention relates to the technical field of optical fiber and cable equipment, and in particular to an ultra-high-density optical fiber ribbon core wire and a production method thereof. Background Art

[0002] With the rapid adoption of 5G networks, cloud computing, artificial intelligence (AI), and big data technologies, the demand for data transmission bandwidth in scenarios such as data centers, smart buildings, and the Industrial Internet of Things is growing exponentially. AI-driven data centers require support for 400G ultra-wideband transmission, but traditional optical cables, due to their low core count and large outer diameter, are unable to meet this capacity requirement.

[0003] At the same time, urban underground pipeline resources are becoming increasingly scarce. Structural limitations of traditional optical cables (such as low core count and thick wire diameter) make high-density deployment difficult within confined spaces. Furthermore, China's "Broadband China" and "Eastern Data West Computing" initiatives are driving global gigabit optical network coverage. Overseas initiatives such as the US BEAD (Broadband Equitable Access and Deployment) program are also accelerating fiber network construction, creating an urgent demand for optical fiber and cable products that feature low wire diameter, high density, lightweight, environmentally friendly construction, and ease of installation.

[0004] Existing optical fiber and cable products have the following shortcomings: 1. The core density of traditional optical cables is generally less than 5 cores / mm², which makes it difficult to meet the transmission needs of ultra-large core counts; 2. The structure is unstable and easily deformed during subsequent processing or use; 3. The construction convenience is poor, the optical fiber bundle is difficult to strip, and the splicing efficiency is low; 4. The applicable scenarios are limited and cannot meet the application requirements of extreme environments or high-density demand scenarios. Summary of the Invention

[0005] To address the above-mentioned problems, the present invention proposes an ultra-high-density optical fiber ribbon core wire and a production method thereof. The optical fiber core wire has high combined strength, a wider range of application scenarios, and a longer service life. The specific technical solutions are as follows: An ultra-high-density optical fiber ribbon core cable comprises an optical fiber bundle, a filling rope, a first layer of silicone oil lubricant, a first layer of acrylic resin, a second layer of silicone oil lubricant, and a second layer of colored acrylic resin; the optical fiber bundle is an equilateral triangle optical fiber bundle composed of optical fibers of different color spectra, the middle pores of the equilateral triangle optical fiber bundle are provided with filling ropes and coated with the first layer of silicone oil lubricant; the outer surface of the equilateral triangle optical fiber bundle is coated with a first layer of acrylic resin, the surface of the first layer of acrylic resin is coated with a second layer of silicone oil lubricant; the surface of the second layer of silicone oil lubricant is coated with a second layer of colored acrylic resin.

[0006] Preferably, the equilateral triangle optical fiber bundle has 12 cores arranged in chromatographic order; each side of the equilateral triangle optical fiber bundle has 5 optical fibers, and the gap between the optical fibers is 0.2 mm-1.5 mm.

[0007] Preferably, the filling rope is made of flexible foam cotton with a foaming ratio of 10-20 times.

[0008] Preferably, the colors of the second layer of colored acrylic resin include but are not limited to blue, orange, green, brown, gray, white, red, black, yellow, purple, pink, and cyan, which are used to distinguish the color sequence of the circular optical fiber bundle.

[0009] A method for producing an ultra-high-density optical fiber ribbon core line comprises the following steps: Step 1: Place 12 optical fibers of different color spectra side by side in color order to form an equilateral triangle structure. Add a flexible foam filling rope to the middle pore of the equilateral triangle and apply silicone oil (the first layer of silicone oil lubricant). Step 2: Separate the optical fiber bundle into regular triangular optical fiber bundles through the triangular eye mask, apply acrylic resin to the surface of the regular triangular optical fiber bundle through the coating mold and perform the first curing molding. The coating mold is periodically supplied with glue through electrical control to achieve intermittent curing of the curing material on the surface of the triangular optical fiber bundle, forming an intermittent fixed connection part. Step 3: Apply a second layer of silicone lubricant on the surface of the first layer of acrylic resin, use a circular coating mold to apply a second layer of colored acrylic resin, and perform a second curing through a periodic glue supply process to form a circular optical fiber bundle; Step 4: Apply acrylic resin to the intermittently cured portion of the multiple circular optical fiber bundles so that the circular optical fiber bundles can be wound or formed into a ribbon to obtain multiple optical fiber core wires.

[0010] Preferably, the pitch of the intermittent fixed connection portion is in the range of 3-20 mm.

[0011] Preferably, the separation strength between the optical fibers after the first curing is greater than 0.5N and less than 2N.

[0012] Preferably, the diameter of the circular optical fiber bundle after coating and curing is less than 1.8 mm, and the core density of the multiple optical fiber bundles is 12 cores / mm².

[0013] Preferably, the circular optical fiber bundle subunits can be quickly peeled off manually and can be spliced ​​using an optical fiber ribbon fusion splicer.

[0014] Compared with the closest existing technology, the technical solution provided by the present invention has the following beneficial effects: This invention uses a 12-core equilateral triangle optical fiber bundle and a multi-layer solidified structure to achieve optical fiber convergence. The combined fiber core density is high, reaching over 12 cores / mm², significantly improving the transmission capacity of a single core wire. It can directly adapt to the needs of 400G ultra-wideband transmission, solving the capacity bottleneck of traditional optical cables. The high strength of the combined fiber core wires allows for a wider range of applications and a longer service life. The diameter of the circular optical fiber bundle after curing is less than 1.8 mm, which is much smaller than that of traditional optical cables. Multiple circular optical fiber bundles are formed into a ribbon by intermittently coating them with a resin with stronger bonding strength. This allows for the compact arrangement of optical cables with a large number of cores within a limited space, significantly improving the optical fiber utilization rate per unit space. The acrylic resin curing method provides a stable structure and facilitates the production of optical cables. The middle filling rope of the present invention adopts flexible foam cotton, and the surface of the optical fiber bundle and the filling rope is coated with silicone oil, so that the circular optical fiber bundle subunits can be quickly peeled off manually without the need for complex tools; during welding, they can be directly separated from the blue and turquoise optical fibers, and are suitable for fiber optic ribbon welding machines, which greatly improves construction efficiency and reduces labor and time costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic top view of the optical fiber core wire of the present invention.

[0016] Figure 2 It is a schematic top view of the optical fiber core and optical fiber bundle in a ribbon shape according to the present invention.

[0017] Figure 3 It is a schematic front view of the optical fiber core wire and optical fiber bundle in the shape of a ribbon according to the present invention.

[0018] Wherein: 1. optical fiber, 2. filling rope, 3. first layer of silicone oil lubricant, 4. first layer of acrylic resin, 5. second layer of silicone oil lubricant, 6. second layer of colored acrylic resin. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] Among them Figure 1 As shown, An ultra-high-density optical fiber ribbon core cable comprises an optical fiber bundle, a filling cord 2, a first layer of silicone lubricant 3, a first layer of acrylic resin 4, a second layer of silicone lubricant 5, and a second layer of colored acrylic resin 6. The optical fiber bundle is an equilateral triangle-shaped bundle composed of optical fibers 1 of different color spectra. The filling cord 2 is positioned in the central pore of the equilateral triangle bundle and coated with the first layer of silicone lubricant 3. The outer surface of the equilateral triangle bundle is coated with a first layer of acrylic resin 4, which is then coated with a second layer of silicone lubricant 5. The second layer of silicone lubricant 5 is then coated with a second layer of colored acrylic resin 6. The stability of the equilateral triangle structure ensures that the optical fiber bundle is not easily deformed during subsequent processing and use. The two layers of silicone lubricant reduce friction between the optical fibers, facilitating subsequent manual stripping and fusion splicing.

[0021] The equilateral triangle-shaped fiber bundle consists of 12 fibers, arranged in chromatic order. Each side of the bundle has five optical fibers 1, with spacing between fibers ranging from 0.2mm to 1.5mm. This chromatic order arrangement ensures high-density transmission while enabling fiber identification. The 0.2-1.5mm spacing ensures the independence of the fibers and allows for subsequent resin coating, ensuring a compact structure after curing.

[0022] The filling cord 2 is made of flexible foam with a foaming ratio of 10-20 times. This flexible material prevents rigid compression of the optical fiber, protecting it from damage. The porous structure with a foaming ratio of 10-20 times absorbs external impact, improving the core's impact resistance. It also provides space for silicone oil to adhere, making it easier to remove.

[0023] The colors of the second layer of colored acrylic resin 6 include but are not limited to blue, orange, green, brown, gray, white, red, black, yellow, purple, pink, and cyan, which are used to distinguish the color sequence of the circular optical fiber bundle.

[0024] A method for producing an ultra-high-density optical fiber ribbon core line comprises the following steps: Step 1: Arrange 12 optical fibers 1 of different color spectra side by side in color sequence to form an equilateral triangle structure, add a flexible foam filling rope 2 into the middle pore of the equilateral triangle, and apply silicone oil, i.e., a first layer of silicone oil lubricant 3; Step 2: Separate the optical fiber bundle into regular triangular optical fiber bundles through the triangular eye mask, apply acrylic resin to the surface of the regular triangular optical fiber bundle through the coating mold and perform the first curing molding. The coating mold is periodically supplied with glue through electrical control to achieve intermittent curing of the curing material on the surface of the triangular optical fiber bundle, forming an intermittent fixed connection part. Step 3: Coat a second layer of silicone lubricant 5 on the surface of the first layer of acrylic resin 4, and use a circular coating mold to coat a second layer of colored acrylic resin 6, and perform a second curing through a periodic glue supply process to form a circular optical fiber bundle; Step 4: Apply acrylic resin to the intermittently cured portion of the multiple circular optical fiber bundles so that the circular optical fiber bundles can be wound or formed into a ribbon to obtain multiple optical fiber core wires.

[0025] This optical fiber ribbon production method achieves optical fiber convergence through the steps of equilateral triangle arrangement, first curing, second curing, and ribbon molding. The combined optical fiber core density is high, reaching over 12 cores / mm², significantly improving the transmission capacity of a single core wire. It can directly adapt to the needs of 400G ultra-wideband transmission, solving the capacity bottleneck of traditional optical cables. The combined optical fiber core wire has high strength, a wider range of application scenarios, and a longer service life.

[0026] The pitch of the intermittent fixed connection portion is within the range of 3-20 mm. If the pitch is too small, the fiber bundle will be too rigid and difficult to bend, while if the pitch is too large, the structural stability will be insufficient.

[0027] Among them, the separation strength between the optical fibers 1 after the first curing is greater than 0.5N, ensuring that the optical fiber bundle will not loosen on its own during transportation and processing, ensuring structural stability; it is less than 2N, meeting the needs of manual stripping, avoiding difficulty in splitting during construction due to excessive strength, and improving welding efficiency.

[0028] Among them, the diameter of the circular optical fiber bundle after coating and curing is less than 1.8mm, and the core density of the multi-bundle optical fiber core wire is 12 cores / mm², breaking through the capacity limitation of traditional optical cables.

[0029] The circular fiber bundle subunit can be quickly peeled off manually and can be spliced ​​using a fiber ribbon fusion splicer. The above embodiments are intended only to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the above embodiments, persons skilled in the art may still modify or substitute equivalents for the specific embodiments of the present invention. Any such modifications or substitutions that do not depart from the spirit and scope of the present invention are within the scope of protection of the pending claims.

Claims

1. An ultra-high-density optical fiber ribbon core wire, comprising an optical fiber bundle and a filling rope, characterized in that: It also includes a first layer of silicone oil lubricant, a first layer of acrylic resin, a second layer of silicone oil lubricant, and a second layer of colored acrylic resin; the optical fiber bundle is an equilateral triangle optical fiber bundle composed of optical fibers of different color spectra, the middle pores of the equilateral triangle optical fiber bundle are provided with filling ropes and coated with the first layer of silicone oil lubricant; the outer surface of the equilateral triangle optical fiber bundle is coated with a first layer of acrylic resin, the surface of the first layer of acrylic resin is coated with a second layer of silicone oil lubricant; the surface of the second layer of silicone oil lubricant is coated with a second layer of colored acrylic resin.

2. The ultra-high-density optical fiber ribbon according to claim 1, characterized in that: The equilateral triangle optical fiber bundle has 12 cores arranged in chromatographic order; each side of the equilateral triangle optical fiber bundle has 5 optical fibers, and the gap between the optical fibers is 0.2 mm to 1.5 mm.

3. The ultra-high-density optical fiber ribbon according to claim 1, characterized in that: The filling rope is made of flexible foam cotton with a foaming ratio of 10-20 times.

4. The ultra-high-density optical fiber ribbon according to claim 1, characterized in that: The colors of the second layer of colored acrylic resin include but are not limited to blue, orange, green, brown, gray, white, red, black, yellow, purple, pink, and cyan, and are used to distinguish the color sequence of the circular optical fiber bundle.

5. A method for producing an ultra-high-density optical fiber ribbon core line according to any one of claims 1 to 4, characterized in that: The following steps are involved: Step 1: Place 12 optical fibers of different color spectra side by side in color order to form an equilateral triangle structure. Add a flexible foam filling rope to the middle pore of the equilateral triangle and apply silicone oil (the first layer of silicone oil lubricant). Step 2: Separate the optical fiber bundle into regular triangular optical fiber bundles through the triangular eye mask, apply acrylic resin to the surface of the regular triangular optical fiber bundle through the coating mold and perform the first curing molding. The coating mold is periodically supplied with glue through electrical control to achieve intermittent curing of the curing material on the surface of the triangular optical fiber bundle, forming an intermittent fixed connection part. Step 3: Apply a second layer of silicone lubricant on the surface of the first layer of acrylic resin, use a circular coating mold to apply a second layer of colored acrylic resin, and perform a second curing through a periodic glue supply process to form a circular optical fiber bundle; Step 4: Apply acrylic resin to the intermittently cured portion of the multiple circular optical fiber bundles so that the circular optical fiber bundles can be wound or formed into a ribbon to obtain multiple optical fiber core wires.

6. The method for producing an ultra-high-density optical fiber ribbon core line according to claim 5, wherein: The pitch of the intermittent fixed connection portion is in the range of 3-20 mm.

7. The method for producing an ultra-high-density optical fiber ribbon core line according to claim 5, wherein: After the first curing, the separation strength between optical fibers is greater than 0.5N and less than 2N.

8. The method for producing an ultra-high-density optical fiber ribbon core line according to claim 5, wherein: The diameter of the circular optical fiber bundle after coating and curing is less than 1.8mm, and the core density of the multi-bundle optical fiber core is 12 cores / mm².

9. The method for producing an ultra-high-density optical fiber ribbon core line according to claim 5, wherein: The circular optical fiber bundle subunits can be quickly stripped manually and can be spliced ​​using an optical fiber ribbon fusion splicer.

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