Optical fibre cable makes it possible to conduct and protect optical fibre from one point of the network to another, passing through ducts, cable trays to reach bays or wall boxes... Thus designing the network, it allows the grouping of 2 to 720 fibres, or even more. Depending on the type of protection and outer sheath (PE, LSZH), it provides characteristics that facilitate installation (tensile strength, crush resistance, etc.) and is adapted to the external environment.
Le câble se distingue selon 5 grandes familles :
- The breakout optical cable
- The optical distribution cable
- The central tubular optical cable
- The multitube optical cable
- The micro-sheath optical cable
The breakout optical cable
The breakout cable is used inside a building to connect several bays. It gathers cables with garter, from 2 to 12 optical fibres (possibly 24 fibres). Thus, it is used when the user wishes to bring several optical fibres from a container A to a container B. Only one pass is then necessary.
The breakout optical fibre cable is thus mainly offered in the form of a pre-connected cable (wiring is already done at both ends). It thus has all the advantages of a cable (no connection to be made in the field, optical wiring made in the factory).
The optical distribution cable
The distribution cable allows for inter or intra-building connections. It consists of a set of super-sheathed optical fibers in 900μm. Due to its structure, this cable is less expensive than an optical breakout cable. It is therefore preferred when the connection is direct, i. e. the wiring is carried out by mounting the optical connector in the field.
The distribution cable may have an anti-rodent feature. It can integrate from 2 to 24 fibres which marking is specific to each manufacturer.
The central tubular optical cable
The central tubed cable is the most commonly used cable for low-capacity interbuilding links (maximum 24 single-mode and/or multimode optical fibres). In order to optimize its installation, this fiber optic cable is characterized by a small cross-section. This is achieved by integrating bare optical fibres which are then protected by a tube and an outer sheath of the LSZH or PE type (depending on the application). The grease in the tube protects the fibre from moisture.
This type of optical cable can also offer the "anti-rodent" feature.
The multitube optical cable
Based on the principle of the central tubular cable, the multitube optical fibre cable is intended for high-capacity cables (over 24 fibres). It consists of several tubes, each containing 6 or 12 bare optical fibres.
The micro-sheath optical cable
The micro-sheathed optical fiber cable is similar to the tube cable (central tubing and multitubes). It consists of bare fibres that are covered with a skin and then protected by an outer sheath.
The micro sheath cable is mainly used for high-capacity links, i.e. over distances that goes up to 100 km. It offers the following advantages:
- easy to set up and store
- no preparation tools required
- low bending diameter
- low cross-section even for high-capacity cables