Le Câble Fibre Optique 256FO Tube Loose Conduit SM G.657.A1 (Part number: ) de la marque Draka avec 256FO. Les câbles de conduite sont des câbles souterrains, qui peuvent être acheminés par un conduit ou encastrés directement dans le sol. Il existe plusieurs types de protection pour ce câble, comme la protection anti-rongeurs ou la double protection. Les câbles de conduite sont construits pour résister à des environnements difficiles et sont généralement acheminés par tirage ou par soufflage.
Central Strength Member (CSM): glass fibre reinforced plastic rod (FRP), with plastic oversheathing when needed.
Loose Tube: thermoplastic material, containing fibres and filled with a suitable water tightness compound.
Filler Elements: thermoplastic rods, where needed.
Stranding: loose tubes (and fillers), SZ stranded around the CSM.
Longitudinal Water Tightness: dry core with water swellable elements.
Inner Sheath: HFFR, 2 ripcords beneath.
Peripheral Strength Elements: aramid yarns.
Outer Sheath: HFFR, 2 ripcords beneath.
Each type of single-mode fiber has its own area of application, and the evolution of these optical fiber specifications reflects the evolution of transmission system technology from the earliest installation of single-mode optical fiber to the present day. Choose the right fiber is very important for each project/installation. The OS2 G.657 standard single-mode fibers were developed to allow a better bending radius regarding the G.652 standard. For the OS2 G.657 fiber there are 4 subcategories: G.657.A1, G.657.A2, G.657.B2, G.657.B3. The G.657.A1 fiber type is characterized by 10 mm minimum bending radius. These specifications of the G.657 fibers allow to have a better cost-efficiency due to compact cable designs and reduced space requirements.
L'utilisation d'une construction à tubes lâches dans les câbles permet de :
La solution de construction de tubes en vrac peut être choisie pour les applications suivantes :