OKMT type optical communication cable

Cable for laying in plastic cable conduit, for laying on bridges and trestles, in cable trays, inside buildings and structures, in operation from minus 50 ° C to 60 °.
The outer sheath is made of polymer compositions taking into account the application: when laying in a plastic pipeline - from polyethylene; when cable entry into the premises from polymer compositions that do not spread burning; power elements from aramid threads or glass roving or without them, inner sheath from polyethylene, (or without it), optical modules twisted around the central power element.
Optical characteristics:
Attenuation coefficient of single-mode optical fibres (core/shell dimensions 9/125) at wavelength 1310 nm not more than 0.36 dB/km, at wavelength 1550 nm not more than 0.22 dB/km.
Attenuation coefficient of multimode optical fibres (core/shell dimensions 50/125) at a wavelength of 850 nm not more than 3.0 dB/km, at a wavelength of 1300 nm not more than 0.7 dB/km.
The attenuation coefficient...