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CN-224203475-U - Hollow-core and solid-core mixed optical fiber cable

CN224203475UCN 224203475 UCN224203475 UCN 224203475UCN-224203475-U

Abstract

The application belongs to the technical field of hollow fiber optical cables, and particularly discloses a hollow and solid mixed fiber optical cable which comprises at least two 8-shaped solid fibers and a hollow fiber mixed fiber bundle, wherein the 8-shaped solid fibers and the hollow fiber mixed fiber bundle comprise solid fibers, hollow fibers and a connecting structure, the solid fibers comprise solid fiber cores, first cladding layers and first coating layers which are sequentially arranged from inside to outside, the hollow fibers and the solid fibers are equal in length, the hollow fiber cores, second cladding layers and second coating layers which are sequentially arranged from inside to outside, and the connecting structure is coated outside the first coating layers and the second coating layers to connect the hollow fiber cores, the second cladding layers and the hollow fiber mixed fiber bundle into a whole. The hybrid optical fiber cable is based on hybrid cabling of the hollow optical fiber and the solid optical fiber such as G.652D, G.654E or G.655, and the like, can provide assistance for positioning of the abnormal point of the hollow optical fiber by means of detection of the abnormal point of the solid optical fiber, can quickly recover a network by means of the solid optical fiber, reduces fault influence, and improves convenience in application and maintenance of the hollow optical fiber.

Inventors

  • HU HAIFENG
  • RUAN YUNFANG
  • TANG SIYI
  • XIAO YI
  • QI LIN
  • YANG XIANGRONG
  • LI PENG
  • ZHANG LEI

Assignees

  • 长飞光纤光缆股份有限公司
  • 汕头高新区奥星光通信设备有限公司

Dates

Publication Date
20260505
Application Date
20260408

Claims (10)

  1. 1. The utility model provides a hollow and solid mixed fiber optical cable which characterized in that, includes at least two 8 style of calligraphy solid optical fiber and hollow fiber mixed fiber bundles, each 8 style of calligraphy solid optical fiber and hollow fiber mixed fiber bundle all include: The optical fiber comprises a solid optical fiber (1), wherein the solid optical fiber (1) comprises a solid optical fiber core (11), a first cladding (12) and a first coating (13) which are sequentially arranged from inside to outside; A hollow fiber (2), the hollow fiber (2) is equal in length to the solid fiber (1), and comprises a hollow fiber core (21), a second cladding (22) and a second coating (23) which are sequentially arranged from inside to outside, and And the connecting structure (3) is coated outside the first coating (13) and the second coating (23) so as to connect the solid optical fiber (1) and the hollow optical fiber (2) along the radial direction into a mixed optical fiber bundle which is integrally 8-shaped.
  2. 2. A hollow-core and solid hybrid fiber optic cable according to claim 1, characterized in that the solid optical fiber (1) is arranged in parallel spaced relation to the hollow-core optical fiber (2).
  3. 3. The hollow-core and solid-core hybrid fiber optic cable of claim 1, wherein the connection structures (3) are arranged in a plurality at intervals along the axial direction of the hybrid fiber bundle, and the interval distance between two adjacent connection structures (3) is below 30 mm.
  4. 4. A hollow-core and solid hybrid fiber optic cable according to claim 3, characterized in that the length of the individual connection structure (3) in the axial direction of the hybrid fiber bundle is 5-10mm.
  5. 5. The hollow-core and solid hybrid fiber optic cable of claim 1, wherein the connection structure (3) comprises a first connection portion (31), a transition portion (32) and a second connection portion (33), the first connection portion (31) is coated on the outside of the first coating layer (13), the second connection portion (33) is coated on the outside of the second coating layer (23), and the transition portion (32) is located between the first connection portion (31) and the second connection portion (33) for connecting the first connection portion (31) and the second connection portion (33) as a whole.
  6. 6. The hollow-core and solid-core hybrid fiber optic cable of claim 5, wherein the first connection portion (31) completely or partially encapsulates the first coating (13) and/or the second connection portion (33) completely or partially encapsulates the second coating (23).
  7. 7. The hollow-core and solid-core hybrid fiber optic cable of claim 5, wherein the first connection portion (31), the transition portion (32), and the second connection portion (33) are integrally formed.
  8. 8. A hollow-core and solid hybrid fiber optic cable according to claim 5, characterized in that the thickness of the first connection portion (31) along the radial direction of the solid fiber (1) and the thickness of the second connection portion (33) along the radial direction of the hollow fiber (2) are equal; And/or the thickness of the first connecting part (31) along the radial direction of the solid optical fiber (1) and the thickness of the second connecting part (33) along the radial direction of the hollow optical fiber (2) are 3-8 mu m.
  9. 9. The hollow-core and solid-core hybrid fiber optic cable of claim 5, wherein the transition (32) has a width of 80-150 μm and/or wherein the transition (32) has a height of not more than 10 μm.
  10. 10. The hollow-core and solid hybrid fiber optic cable of claim 1, wherein the connection structure (3) comprises a first connection portion (31) and a second connection portion (33), the first connection portion (31) is coated on the outside of the first coating layer (13), the second connection portion (33) is coated on the outside of the second coating layer (23), and a tearable structure (34) is provided between the first connection portion (31) and the second connection portion (33).

Description

Hollow-core and solid-core mixed optical fiber cable Technical Field The application belongs to the technical field of hollow fiber optic cables, and particularly relates to a hollow and solid mixed fiber optic cable. Background The structural design of the hollow fiber with air as a fiber core thoroughly breaks the transmission paradigm of the traditional solid glass fiber, and the optical signals are not conducted by a glass medium any more, but are mainly transmitted in a hollow air channel. The structure innovation directly reconstructs the working principle of the optical fiber, namely, a total internal reflection mechanism which is realized by a traditional optical fiber and is used for realizing light restraint is abandoned, light is limited to advance in an air channel through a precise microstructure of a cladding, and the optical fiber mainly comprises a photonic band gap optical fiber for constructing an optical transmission forbidden band based on a photonic band gap effect and an anti-resonance microstructure optical fiber for restraining an optical signal by utilizing an anti-resonance reflection principle. Because light has faster propagation speed and lower loss in air, the hollow fiber can obviously reduce signal transmission delay and signal attenuation, and by virtue of the irreplaceable technical advantages, the hollow fiber is regarded as a key technical direction for solving the bottleneck problems in the fields of future high-speed communication, high-power laser transmission and the like. Although hollow fiber has many technical advantages, the method still has the problems that the Fresnel reflection intensity of the hollow fiber is low, the measurement by adopting an Optical Time Domain Reflectometer (OTDR) is inaccurate, when a link is in a problem, the abnormal point position is difficult to judge, the construction and welding efficiency of the hollow fiber is lower than that of a solid fiber by more than 50%, once the link is in a fault, the maintenance time is longer, the signal interruption time is longer, and the use of a user is inconvenient. Disclosure of utility model Aiming at the defects or improvement demands of the prior art, the application provides a hollow-core and solid-core hybrid optical fiber cable, which aims to solve the problems that the abnormality of a hollow-core optical fiber is not easy to detect and the signal interruption time is too long when the abnormality occurs. In order to achieve the above object, the present application provides a hollow-core and solid-core hybrid fiber optic cable, which specifically includes at least two 8-shaped solid-core optical fiber and hollow-core optical fiber hybrid fiber bundles, each of the 8-shaped solid-core optical fiber and hollow-core optical fiber hybrid fiber bundles includes: The solid optical fiber comprises a solid optical fiber core, a first cladding and a first coating which are sequentially arranged from inside to outside; the hollow fiber has equal length with the solid fiber, and comprises a hollow fiber core, a second cladding and a second coating which are sequentially arranged from inside to outside, and And the connecting structure is coated outside the first coating and the second coating so as to connect the solid optical fiber and the hollow optical fiber into a mixed optical fiber bundle which is in an 8-shaped overall shape along the radial direction. As a further preferred aspect, the solid optical fiber and the hollow optical fiber are arranged in parallel and spaced apart. As a further preferable mode, a plurality of connecting structures are arranged at intervals along the axial direction of the mixed optical fiber bundle, and the interval distance between two adjacent connecting structures is below 30 mm. As a further preferred aspect, the length of the individual connection structures in the axial direction of the hybrid fiber bundle is 5-10mm. As a further preferred aspect, the connection structure includes a first connection portion, a transition portion, and a second connection portion, the first connection portion is wrapped outside the first coating layer, the second connection portion is wrapped outside the second coating layer, and the transition portion is located between the first connection portion and the second connection portion, and is used for connecting the first connection portion and the second connection portion into a whole. Further preferably, the first connecting portion completely or partially covers the first coating layer, and/or the second connecting portion completely or partially covers the second coating layer. As a further preferred aspect, the first connecting portion, the transition portion and the second connecting portion are integrally formed. As a further preferable aspect, the thickness of the first connection portion along the radial direction of the solid optical fiber is equal to the thickness of the second connection portion along the radial dire