CN109031559B

CN109031559B - High-core-number high-density sleeve optical cable

Info

Publication number: CN109031559B
Application number: CN201810992599.XA
Authority: CN
Inventors: 李凌驿; 张慧; 卢星星; 熊壮
Original assignee: Yangtze Optical Fibre and Cable Co Ltd
Current assignee: Changfei Optical Fiber And Cable Co Ltd; Shantou High Tech Zone Aoxing Optical Communication Equipment Co ltd
Priority date: 2018-08-29
Filing date: 2018-08-29
Publication date: 2020-01-14
Anticipated expiration: 2038-08-29
Also published as: CN109031559A

Abstract

The invention relates to a large-core-number high-density sleeve optical cable which comprises an outer sheath and a loose sleeve coated in the outer sheath, wherein an optical communication unit is laid in the loose sleeve. The optical cable has the characteristic of high optical fiber density, and the modularized optical fiber ribbon is adopted, so that the space in the sleeve can be fully utilized, and the optical fibers in the sleeve can be distributed in a full section. By adopting the polygonal loose sleeve, the internal space of the sleeve can be maximized under the same size, and the consumption of materials is reduced. The invention has wide application range, large access capacity and flexible use and laying, and can design different-shaped sleeves according to the requirement of actual core number.

Description

High-core-number high-density sleeve optical cable

Technical Field

The invention relates to a high-core-number and high-density sleeve optical cable, which is suitable for laying an indoor data center and belongs to the technical field of communication optical cables.

Background

With the increasing popularity of optical fiber transmission and the increasing development of data centers, optical cables with large core count have been developed greatly. Especially, in large-scale use environments such as a comprehensive data center and the like, the optical cable with large core number and high density is particularly important. The comprehensive data center equipment is various in types and large in quantity, and has a large number of external interfaces, so that more transmission channels are required, and as an optical cable for indoor application, the space is one of important factors which must be considered for arrangement, so that the improvement of the optical fiber density in the limited space is one of the most important targets. In the prior art, indoor optical cables with various structures exist, but the core number and density of optical fibers are still at a relatively low level, for example, a bundle tube oil-filled optical fiber ribbon optical cable with the core number within 288 cores has the maximum core number only within the range of the core number of a normal optical cable, and a sleeve is filled with factice, so that the indoor cleaning construction is not facilitated, the number of large-scale data center interfaces can reach more than thousands, and the traditional small-core optical cable cannot meet the use requirements, so that the large-core high-density optical cable is provided for an indoor comprehensive data center, which is very important.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a high-core-number high-density sleeve optical cable aiming at the defects in the prior art, wherein the optical cable is simple and reasonable in structure and arrangement, high in fiber capacity and convenient to use and lay.

The technical scheme adopted by the invention for solving the problems is as follows:

the optical communication device comprises an outer sheath and a loose tube coated in the outer sheath, wherein an optical communication unit is laid in the loose tube, and the optical communication device is characterized in that the loose tube is a polygonal loose tube, and the polygon is a polygon with 6 sides or more than 6 sides.

According to the scheme, the polygon is a symmetrical polygon or an equilateral polygon.

According to the scheme, the polygon is a 6 ~ 10-edge polygon.

According to the scheme, the radial section of the outer sheath is circular, and the loose tube is laid by 2 ~ 3 layers around the center of the outer sheath.

According to the scheme, the optical communication unit is one or more of an optical fiber, an optical fiber ribbon and an optical fiber ribbon module.

According to the scheme, the optical fiber ribbon modules are formed by splicing optical fiber ribbons in a stacking mode, the number of cores of each optical fiber ribbon is 8 ~ 24, and the cross sections of the optical fiber ribbon modules are configured with the cross sections of the polygonal loose tubes.

According to the scheme, 2 layers of loose tubes are laid around the center of the outer sheath, 3 loose tubes are arranged on the inner layer, and 9 loose tubes are arranged on the outer layer.

According to the scheme, the loose tube is an equal 6-edge or 8-edge loose tube.

According to the scheme, the loose tube is made of polyether ether ketone (PEEK) or Polytetrafluoroethylene (PTFE).

According to the scheme, the maximum core number of each loose tube is 288 cores, and the maximum core number of the whole optical cable is 3456 cores.

According to the scheme, the water-blocking materials are arranged between the loose tubes, the water-blocking layer is coated outside the cable core formed by the loose tubes, the nonmetal reinforcing layer is coated outside the water-blocking layer, and the outer sheath is arranged on the outermost layer.

The invention has the beneficial effects that: 1. the optical cable with the specific polygonal loose sleeve is provided, the sleeve with the specific shape enables the arrangement among the sleeves to be more compact, the internal space of the sleeve can be maximized under the same size, and the fiber capacity and the space utilization rate are improved; 2. the polygonal sleeve adopts the modularized optical fiber ribbon, so that optical fibers can be distributed in a customized manner according to the shape of the sleeve, the distribution density of the optical fibers is further improved, and the high-density optical fiber with large core number is possible; 3. due to the specific arrangement mode of the sleeves, the polygonal sleeves can form regular circular cable cores, so that the waste of space is avoided, and the conventional process jacket cabling is realized; 4. the structure setting is simple and reasonable, the water blocking material is arranged between the sleeves, and the reinforcing element is arranged outside the cable core, so that the normal water blocking performance and the tensile property of the optical cable are ensured, the outer diameter of the optical cable is reduced, and the optical cable is convenient to lay and use. The method is particularly suitable for laying indoor large-scale data centers.

Drawings

FIG. 1 is a cross-sectional block diagram of one embodiment of the present invention.

FIG. 2 is a schematic diagram of the polygonal ferrule and optical fiber ribbon module of FIG. 1.

Fig. 3 is a structural view of another embodiment of the present invention.

Detailed Description

The invention will be further described and illustrated with reference to the following figures and examples.

A first embodiment of the present invention is shown in fig. 1 and 2, and includes an outer jacket 6 and a loose tube 1 wrapped in the outer jacket, the loose tube is a long 8-sided loose tube, the long 8-sided loose tube includes 2 long sides 1.2 symmetrically disposed up and down and 2 short sides 1.3 symmetrically disposed at both sides, a ratio of the long side to the short side is 1.3 ~ 1.7: 1, the 2 long sides and the 2 short sides are connected by a beveled side 1.1 at four corners to form a long 8-sided long edge, a radial cross section of the outer jacket is circular, the loose tube is laid with 2 layers around a center of the outer jacket, the inner layer is provided with 3 loose tubes, the outer layer is provided with 9 loose tubes, wherein 3 loose tubes of the inner layer are uniformly distributed in a circumferential direction, the long sides are laid in a direction parallel to a radial direction, an included angle of 120 ° of each loose tube of the inner layer is 120 °, the 9 loose tubes of the loose tube include 3 loose tubes disposed at ends of each loose tube of the inner layer and 6 loose tube ends of the inner layer, and 6 loose tubes disposed between the loose tube ends of the inner layer, the loose tube is disposed adjacent to a longitudinal direction of a longitudinal.

A second embodiment of the present invention is shown in fig. 3, and it is different from the previous embodiment in that the polygonal loose tubes are equihexagonal tubes, each of which has equal side length, the loose tubes are laid in 2 layers around the center of the outer sheath, 3 loose tubes are arranged in the inner layer, and 9 loose tubes are arranged in the outer layer. The regular hexagon sleeve can further improve the space utilization rate of the optical cable and reduce the gap between the loose sleeves. The modularized optical fiber ribbon is also adopted, the cross section of the optical fiber ribbon module is in an equal hexagon shape, and the optical fiber ribbon module is configured with the cross section of the equal hexagon loose tube, so that more optical fiber cores can be filled in the tube, and the density of optical fibers is improved. The other structure is the same as the previous embodiment.

Claims

1. A large-core-number high-density sleeve optical cable comprises an outer sheath and a loose sleeve coated in the outer sheath, wherein an optical communication unit is laid in the loose sleeve, and the large-core-number high-density sleeve optical cable is characterized in that the loose sleeve is a polygonal loose sleeve, and the polygon is a long 8-edge shape; the long 8-sided polygon comprises 2 long sides and 2 short sides, wherein the 2 long sides are arranged up and down symmetrically, the 2 short sides are arranged on two sides symmetrically, and the 2 long sides are connected with the 2 short sides through bevel edges of four corners to form the long 8-sided polygon; the radial section of the outer sheath is circular, and the optical communication unit is one or more of an optical fiber, an optical fiber ribbon and an optical fiber ribbon module.

2. The high core count high density tube-in-tube optical cable of claim 1 wherein the ratio of the long side to the short side of said long 8-sided polygon is 1.3 ~ 1.7.7: 1.

3. A high core count, high density sleeve optical cable as claimed in claim 1 or 2 wherein said loose tube is provided with 2 ~ 3 layers around the centre of the outer jacket.

4. A high core count, high density sleeve optical cable as claimed in claim 1 or 2, wherein said optical fiber ribbon modules are formed by splicing optical fiber ribbons, each optical fiber ribbon having a core count of 8 ~ 24 cores, and said optical fiber ribbon modules have a cross section corresponding to a cross section of a polygonal loose sleeve.

5. A high core count, high density tube optical cable as claimed in claim 3 wherein said loose tubes are arranged in 2 layers around the center of the outer jacket, with 3 loose tubes in the inner layer and 9 loose tubes in the outer layer.

6. A high core count, high density optical fiber cable as claimed in claim 1 or 2, wherein said loose tubes each have a maximum core count of 288 cores and the entire cable has a maximum core count of 3456 cores.

7. The optical cable of claim 1 or 2, wherein a water blocking material is disposed between the loose tubes, a water blocking layer is coated outside the cable core formed by the loose tubes, a non-metallic reinforcing layer is coated outside the water blocking layer, and an outer sheath is disposed on the outermost layer.