CN2876812Y

CN2876812Y - Unidirectional skeleton type optical fiber band optical cable

Info

Publication number: CN2876812Y
Application number: CN 200620056228
Authority: CN
Inventors: 陈焕新; 王华斌; 徐亮; 王晓锋; 梁振宇; 王新龙
Original assignee: Shenzhen SDG Information Co Ltd
Current assignee: Shenzhen SDG Information Co Ltd
Priority date: 2006-03-09
Filing date: 2006-03-09
Publication date: 2007-03-07
Anticipated expiration: 2016-03-09

Abstract

The utility model discloses a unidirectional skeleton type optical fiber band optical cable, which comprises a strip skeleton with a plurality of rectangular optical fiber band groove orderly arranged around. The center of the strip skeleton is equipped with a central strengthener; the outside of the strip skeleton is covered in turn from inside to outside with a polyester mangled gauze, waterproofing strip, a composite aluminum strip and polythene oversheath; a lacerated rope is equipped between the waterproofing strip and the composite aluminum strip. All the rectangular optical fiber band grooves are equipped with 2 to10 two-core optical fiber band, and all the optical fiber bands are stacked side by side to form an optical fiber stacking layer. In the application of the utility model, the optical fiber band can be easily connected with the loose tube or the central tube type of the 12-core or 24-core optical fiber band structure, and meanwhile, the utility model has the advantages of small cable diameter, high fiber core density, outstanding resistance to side pressure, convenient for welding operation, etc.

Description

Unidirectional slotted core fiber ribbon cable

Technical field

The utility model relates to a kind of unidirectional slotted core fiber ribbon cable that is used for the optical communication transmission field.

Background technology

Fibre ribbon is just used the optical communication transmission field more widely owing to have the fast characteristics of welding.Existing optical fibre band optical cable mostly is loose jacket layer stranded cable structure, the major defect that this optical cable exists is: the cable footpath is bigger, the anti-poor-performing of pressing, and be filled with greasy for preventing water in the cable core, brought inconvenience for the butt joint construction, and slotted core fiber ribbon cable is a kind of dry type optical cable with high fibre core density, can overcome the existing weak point of aforementioned loose jacket layer stranded cable, thereby satisfy, adapt to the trend of modern communications development (as FTTE, FTTH) more fully, be specially adapted to communication signal transmission in Metropolitan Area Network (MAN), Access Network and the trunk network.

Slotted core fiber ribbon cable is used in the problem that needs in the above-mentioned communication network to solve: must realization dock easily with the loose sleeve pipe or the central beam pipe optical cable of twelve-core or 20 four-core band structure of optic fibre, yet do not occur such optical fibre band optical cable at present always.

Summary of the invention

For overcoming the defective of above-mentioned prior art, technical problem to be solved in the utility model is intended to provide a kind of to be had higher core and counts capacity, and can with the loose sleeve pipe of twelve-core or 20 four-core band structure of optic fibre or the unidirectional slotted core fiber ribbon cable that the central beam pipe optical cable docks easily.

For solving the problems of the technologies described above, the utility model proposes a kind of unidirectional slotted core fiber ribbon cable, comprise the bar shaped skeleton that circumferentially offers a plurality of rectangle optical fiber troughs of belt in an orderly manner, the center of described bar shaped skeleton is equipped with central reinforce member, in the described bar shaped skeleton outside, be coated with polyester from inside to outside successively and prick yarn, waterstop, compound aluminium strip and tygon oversheath, also be equipped with between described waterstop and the compound aluminium strip and tear rope, in described each rectangle optical fiber trough of belt, 12 core fibre bands are installed all.

After adopting said structure, owing in the optical fiber trough of belt of slotted core cable, adopt 12 core fibre bands, not only can increase substantially the transmission capacity of optical cable, can also dock advantages such as the cable footpath that the poly-slotted core fiber ribbon cable of also holding concurrently is simultaneously had is little, fibre core density height, lateral pressure resistant superior performance and welding easy construction with the loose sleeve pipe or the central beam pipe optical cable of twelve-core or 20 four-core band structure of optic fibre easily.

To and be elaborated to the utility model in conjunction with the accompanying drawings by embodiment below.

Description of drawings

Fig. 1 is the bar shaped skeleton structure synoptic diagram of the unidirectional slotted core fiber ribbon cable of the utility model;

Fig. 2 is the square section structural representation of a kind of embodiment of the unidirectional slotted core fiber ribbon cable of the utility model.

Embodiment

With reference to Fig. 1, the bar shaped skeleton 4 of unidirectional slotted core fiber ribbon cable of the present utility model, circumferentially offer a plurality of rectangle optical fiber troughs of belt 41 in an orderly manner at it, be equipped with central reinforce member 6 at the center of bar shaped skeleton, this central reinforce member is can working strength higher sends out steel wire or fiberglass reinforcement rod (FRP) or steel strand wires blue;

Figure 1 illustrates bar shaped skeleton with 8 rectangle optical fiber troughs of belt 41, and figure 2 illustrates bar shaped skeleton 4 with 5 rectangle optical fiber troughs of belt 41, generally speaking, the bar shaped skeleton circumferentially to be evenly equipped with 3～15 rectangle optical fiber troughs of belt be proper, described rectangle optical fiber trough of belt 41 vertically distributes as shown in Figure 1 twist along optical cable, thereby can constitute unidirectional slotted core fiber ribbon cable, this unidirectional bar shaped skeleton can be made by high density polyethylene;

With reference to Fig. 2, in the bar shaped skeleton outside, be coated with polyester from inside to outside successively and prick yarn 3, waterstop 7, compound aluminium strip 8 and tygon oversheath 9, also be equipped with between described waterstop 7 and the compound aluminium strip 8 and tear rope 5, in described rectangle optical fiber trough of belt 41,12 core fibre bands 2 are installed, so that successfully dock with the loose sleeve pipe or the central beam pipe optical cable of twelve-core or 20 four-core band structure of optic fibre;

In the practice,, can in each rectangle optical fiber trough of belt, 2～10 12 core fibre bands be installed, be built up the fibre ribbon lamination side by side by each fibre ribbon in order further to increase the fibre ribbon capacity.

The markings 1 of expression optical fiber trough of belt sequential bits also can be set on the rib in the middle of the described bar shaped skeleton, described markings and the described optical fiber trough of belt that distributes twist extend in the mode that is parallel to each other on vertically at optical cable so that in the construction to effective identification of each fibre ribbon in the optical cable.

The utility model adopts 12 core fibre bands in each optical fiber trough of belt of slotted core cable, not only increased substantially the transmission capacity of optical cable, can also successfully dock easily with the loose sleeve pipe or the central beam pipe optical cable of twelve-core or 20 four-core band structure of optic fibre, advantages such as the cable footpath that the poly-slotted core fiber ribbon cable of also holding concurrently is simultaneously had is little, fibre core density height, lateral pressure resistant superior performance and welding easy construction are poly-.

Claims

1. unidirectional slotted core fiber ribbon cable, comprise the bar shaped skeleton that circumferentially offers a plurality of rectangle optical fiber troughs of belt in an orderly manner, the center of described bar shaped skeleton is equipped with central reinforce member, in the described bar shaped skeleton outside, be coated with polyester from inside to outside successively and prick yarn, waterstop, compound aluminium strip and tygon oversheath, also be equipped with between described waterstop and the compound aluminium strip and tear rope, it is characterized in that: in described each rectangle optical fiber trough of belt, 12 core fibre bands are installed all.

2. unidirectional slotted core fiber ribbon cable as claimed in claim 1 is characterized in that: described bar shaped skeleton circumferentially be evenly equipped with 3～15 rectangle optical fiber troughs of belt, described rectangle optical fiber trough of belt vertically distributes twist along optical cable.

3. unidirectional slotted core fiber ribbon cable as claimed in claim 2, it is characterized in that: the markings of expression optical fiber trough of belt sequential bits also can be set on the rib in the middle of the described bar shaped skeleton, and described markings and the described optical fiber trough of belt that distributes twist extend in the mode that is parallel to each other on optical cable is vertical.

4. as claim 1,2 or 3 described unidirectional slotted core fiber ribbon cables, it is characterized in that: in described each rectangle optical fiber trough of belt 2～10 12 core fibre bands are installed, each fibre ribbon is built up the fibre ribbon lamination side by side.

5. unidirectional slotted core fiber ribbon cable as claimed in claim 4 is characterized in that: described central reinforce member can be for sending out steel wire or fiberglass reinforcement rod or steel strand wires blue.