In FTTH (Fiber to the Home) construction, the commonly used types of optical cables mainly include butterfly-shaped drop cable and their derivative structures.
Structural features:
The optical fiber is placed in the center, and two parallel steel wires are placed on both sides as reinforcement elements. The cross section is 8-shaped, and the optical fiber is located at the geometric center.
Application Scenario:
Wall-mounted: Suitable for indoor and outdoor wall routing, with strong bending resistance and a bending radius as small as 20mm.
Pipe laying: suitable for short-distance pipeline laying and adaptable to narrow spaces.
Advantages:
The structure is compact and the tensile strength is high, which can withstand the side pressure of people stepping on it and the dragging force during construction.
It is easy to terminate on site and is compatible with a variety of quick connectors.
Structural features:
A steel wire or steel rope is added to the outside of the ordinary butterfly optical cable as a reinforcing element to form a self-supporting structure.
Application Scenario:
Overhead lead-in: Suitable for overhead wiring from outdoor poles to indoor areas. It has high tensile strength and can withstand a span of 50 meters.
Pipeless environment: No additional hanging wires are required, simplifying the construction process.
Advantages:
Strong tensile strength reduces the risk of damage from external forces.
High construction efficiency and reduced labor costs.
Structural features:
The middle part is a single-core tight-buffered optical fiber (G.657), which is wrapped with a 0.9mm transparent sheath, with a thin outer diameter and is completely transparent.
Application Scenario:
Lay wiring along the building baseboards and around door and window decorative strips, and fix with glue.
Places with high aesthetic requirements: such as hotels, high-end residences, etc., where the wiring needs to be concealed.
Advantages
Visually concealed, does not affect interior decoration.
The transparent cover is wear-resistant and adaptable to various environments.
Structural features:
Metal suspension wire units are added to the leather-line optical cable to form an "8"-shaped structure.
Application Scenario:
Outdoor overhead lead-in: suitable for overhead wiring from electric poles to user corridors, with high tensile strength.
Scenario with high span requirements: can withstand spans of more than 50 meters and has strong stability.
Advantages:
The tensile performance is significantly improved, reducing the risk of optical fiber breakage.
Easy to construct and adapt to complex terrain.
-
