Common indoor optical cables generally include the following: vertical lift optical cables, single-core, dual-core interconnected indoor optical cables, optical cables for inflatable environments, and rodent-proof optical cables. as follows:
Indoor fiber optic cable
(1) Vertical lift optical cable (Riser)
After the optical cable enters the building, it is necessary to provide the connection between the entrance equipment, the equipment room or the computer room and the communication cabinets on different floors, which is called "vertical wiring system". At this time, the wiring optical cable is mostly located in the vertical pipe (Riser) of the shaft between floors. For this reason, the optical cable needs to withstand a greater tensile force (maximum self-weight).
(2) Single-core, dual-core interconnecting indoor optical cable (Interconnect cable)
Tight-sleeve single-core, tight-sleeve 8-core double-core, tight-sleeve 2-core to 4-core circular structure indoor optical cable. Because the tight-sleeve structure with very good flexibility and high-load aramid yarn are used to surround the tight-sleeve optical fiber, the cable structure size Small size, good flexibility, can withstand a small bending radius, no inventory traces, fiber to workstation, patch cords, pigtails, patch cords in communication cabinets, communication cabinets to indoor wall terminals, and terminals to transceiver applications Ideal for interconnecting fiber optic cables.
They directly carry standard connectors, and play the role of interconnection between optical end devices and trunk (vertical) optical cables in communication cabinets, distribution boxes, protection boxes, and equipment boxes. This type of optical cable is convenient and easy to install in a limited space, and becomes an ideal network cable solution for limited space wiring and flexible cords in buildings.
(3) Optical cable for inflatable environment (Plenum)
In indoor applications, Plenum grade indoor cables are required when the cables need to pass through transmission ducts, high pressure plenums or air handling systems to transmit information.
This special use environment puts forward more stringent requirements on the flame retardancy and corrosion resistance of the optical cable. Therefore, the tight sleeve material and outer sheath material of the indoor optical cable used are more strict, the tight sleeve is PVC material, and the outer sheath material is UL certified PVC material with flame retardant added or hard fluoropolymer. Engineered with PVC over fluoropolymers. Because PVC is soft, easy to bend, and has no inventory traces, it can be stored in a circle.
(4) Anti-rodent optical cable
Single-core or multi-core tight-buffered fiber optic cables protected by stainless steel hoses have strong lateral pressure resistance, bending resistance, high tensile strength, and excellent anti-rat performance. It can be used in situations where trampling occurs, such as under carpets or where limited space requires frequent bending or rodent infestation.
Also, a few more things:
First, when the optical fiber ribbon cable is used to enter the building, the matching indoor optical fiber ribbon cable (fiber ribbon + aramid yarn + PVC sheath structure) can be selected.
Second, when laying underground pipes and ceilings in equipment rooms, reinforced structures can be used. For example, PE or PU sheaths can be used on the basis of distribution cables, or aluminum-PE sheaths can be used on the basis of scattered cable structures. set structure, etc.
Third, when the distribution cable adopts metal armored sheath, it can be used for overhead and direct buried laying.
Fourth, low smoke halogen free (LSZH) materials can be used as the outer sheath in occasions with high requirements on toxicity and smoke emission. Fifth, the PU sheath has better resistance to friction, scratches and chemical erosion, and can be used for emergency, emergency repair and military optical cables.
