What are the characteristics of butterfly-shaped lead-in cable FTTH
Butterfly drop optical cable is also called drop cable and FTTH optical cable. It is named because of its butterfly-shaped cross section. The butterfly-shaped drop cable structure is very simple, but it does not lose its characteristics as an indoor optical cable. The cross-section of the butterfly-shaped incoming optical cable is butterfly-shaped, and the optical fiber is located at the geometric center of the butterfly-shaped. Two KFRP reinforcing cores are symmetrically arranged on both sides of the optical fiber, and V-shaped grooves are arranged between the two sides of the optical cable.
Features of butterfly drop cable:
1. Compact structure, flat shape and small size (2.0mmX3.0mm), more suitable for indoor deployment.
2. On the basis of a miniaturized structure, flexibility and portability are better realized. Optical cables are more suitable for deployment in small bends and small spaces.
3. The arrangement of two reinforcing cores makes the optical cable have better tensile performance.
4. The unique V-groove structure design on both sides makes the optical cable have better lateral pressure resistance. The side pressure of the optical cable is mainly borne by the reinforcement, and the middle optical fiber is basically not stressed, so it can withstand a pressure exceeding 10000N/10cm, and the optical fiber attenuation has no obvious change.
5. The tight-packed structure can effectively reduce the size and weight of the optical cable and reduce the manufacturing cost under the premise of ensuring various performances.
6. The unique flat structure makes it easier to realize on-site termination and docking, which helps reduce installation and connection costs.
7. V-groove treatment on both sides makes it more convenient to strip and connect the optical cable.
8. Optical fiber dry structure, no need to wipe fiber paste during splicing process, which is more in line with environmental protection requirements.
9. The structure of the optical cable is compact and exquisite, which meets the requirements of miniaturization, and it can more effectively utilize the existing pipeline resources when wiring through the pipe.
10. There is no grease in the optical cable and has certain tensile performance, which is more suitable for integrated wiring in buildings.
With the continuous extension of optical fiber to the user end, in order to meet different uses and requirements and expand the application range of butterfly drop cables, optical cable manufacturers have developed derivative products of butterfly drop cables on the basis of butterfly drop cables. The typical structure is undoubtedly a self-supporting butterfly-shaped drop cable.
The structure of the self-supporting butterfly-shaped drop cable is based on the butterfly-shaped drop cable with a metal suspension wire unit. Its characteristic is: the optical cable can be used both outdoors and indoors. Outdoors, the butterfly-shaped drop cable can be laid overhead. Cut the metal hanging wire unit before entering the house and fix it on a special holder. The remaining optical cable with the metal hanging wire stripped off is introduced into the room in the form of a butterfly-shaped lead-in optical cable. The advantage is that it inherits all the advantages of the butterfly-shaped drop cable in the indoor wiring, and at the same time reduces the connection between the outdoor optical cable and the indoor optical cable, which not only saves the construction cost, but also improves the reliability of the optical cable. In addition, the duct butterfly-shaped incoming optical cable also has a similar effect. It is laid in ducts outdoors.
After years of use, the advantages of the butterfly drop cable in the FTTH access network have been fully demonstrated. Its manufacturing technology and related supporting technologies have been quite mature. At this stage, the butterfly drop cable is FTTH.
