Double-core leather cable, optical fiber cold connector

Indoor double core fiber optic cable? What is a leather cable? Leather cable is commonly known as indoor suspension wiring cable. In the optical fiber access project, the indoor wiring close to the user is the most complicated link. The bending performance and tensile performance of conventional indoor optical cables can no longer meet the needs of FTTH (fiber-to-the-home) indoor wiring.

The dish-shaped lead-in optical cable for access network (for indoor wiring) is to place the optical communication unit (optical fiber) in the center, place two parallel non-metallic reinforcements (FRP) or metal reinforcements on both sides, and finally extrude black or colored poly Vinyl chloride (PVC) or low-smoke halogen-free material (LSZH, low-smoke, halogen-free, flame retardant) sheath.

The covered cable is mostly single-core or double-core structure, and it can also be made into a four-core structure. . The optical fiber in the leather cable adopts G.657 small bending radius optical fiber, which can be laid with a bending radius of 20mm, and is suitable for entering the building in the form of pipes or laid wires.

Ordinary leather cable has a standard 8-shaped structure; two parallel strengthening cores, with optical fibers in the middle; self-supporting leather cable adds a thick steel wire suspension wire to the structure of ordinary leather cable; in general, self-supporting leather The fiber optic cable is just one more steel wire, and the others have not changed;

The structure of each manufacturer of this kind of optical cable is different. But most of them are not metal reinforced cores, take butterfly leather cable as an example. The cross section looks like a butterfly, so it is called. Both sides are leather wires and inside are reinforcements, and the middle is optical fiber.

1. Butterfly optical cables are divided into indoor and indoor (indoor) and outdoor. The prices of the two are quite different. The price of the outdoor type is about twice that of the indoor type. The price factor should be considered when making a specific design plan. In general, Ordinary optical cables (GYTA-G 652D) are still used outdoors, and indoor butterfly optical cables are used indoors, and the two are transitioned through fiber distribution boxes or splice boxes.

2. The butterfly optical cable has the characteristics of small curvature radius, light weight, relatively good bending resistance, easy fixing, and easy termination in the 86 terminal box.

3. There are two forms of butterfly fiber optic cable: non-metallic strengthening member and metal strengthening member. Considering the factors of lightning protection and anti-strong electric interference, the butterfly cable with non-metallic strengthening member should be used indoors.

4. Indoor butterfly optical cables have specifications such as 1 core, 2 cores, 3 cores, and 4 cores. Residential users should use single-core cables to access butterfly optical cables; business users can access butterfly optical cables according to 2--4 Core cable design.

The large-scale use of leather cable in the FTTX project mainly adopts two splicing methods: one is the optical cable cold splicing technology (physical splicing) based on cold splices, and the other is the hot melt technology using the fusion splicer as a tool.

How to make double-core leather cable connector

The optical fiber cold joint is used when two pigtails are docked. The main part inside it is a precise V-shaped groove. After the two pigtails are pulled out, the cold joint is used to realize the docking of the two pigtails. It is easier and faster to operate, saving time than welding with a fusion splicer.

It is used to connect optical fiber or optical fiber butt pigtail, which is equivalent to making a joint (fiber butt pigtail refers to the butt joint of the fiber core of the optical fiber and the pigtail instead of the pigtail head mentioned in the former), and is used for this kind of cold splicing The thing is called a fiber optic cold splicer.

With the rapid development of FTTH fiber to the home, the demand for optical fiber cold connectors has also greatly increased.

Optical fiber quick connectors and optical fiber cold splices will play an irreplaceable role in FTTH access. The field termination technology of optical fiber quick connectors just solves this problem. It is convenient and fast without fusion splicing, and the connection cost is low, truly realizing access anytime and anywhere.