Fibre=optic cable containing several optical fibres - has sheath including strain-relieving filaments for protecting fibres surrounded by incompressible gel

摘要

The cable comprises an outer sheets(1), that features built-in strain/tensioning filaments (4), enclosing a incompressible gel interior (2), containing a number of fibre optic cables (3). The strain/tensioning filaments may be formed from steel wire or an artificial material and are wound so that the slanting length of the wires is between 0.5 and 10 times the winding cross sectional diameter. ADVANTAGE - Simple construction with built-in strain/tensioning filaments protects against both longitudinal and orthogonal cable tensions/pressures.