A stainless steel optical tube is located on the center of cable protected by single or multiple layers of metallic wires. This type can accommodate up to 48 fibres in a cable. Despite such a high fibre count in a single tube, each optical fibre is clearly distinguishable utilizing a fibre identification system consisting of coloring and the number of ring marks on it.
1.2.1 Centrum type OPGW
A stainless steel optical tube is located on the center of cable protected by single or multiple layers of metallic wires. This type can accommodate up to 48 fibres in a cable. Despite such a high fibre count in a single tube, each optical fibre is clearly distinguishable utilizing a fibre identification system consisting of coloring and the number of ring marks on it.
1.2.1 Centrum type OPGW
Lux type OPGW is designed mostly for very high fibre count requirement over 48. Two or three stainless steel optical tubes are helically stranded in the inner layer of a multiple-layer cable. The maximum fibre count reaches 144.
1.2.2 Lux type OPGW
A stainless steel optical tube is located on the center of cable protected by single or multiple layers of metallic wires. This type can accommodate up to 48 fibres in a cable. Despite such a high fibre count in a single tube, each optical fibre is clearly distinguishable utilizing a fibre identification system consisting of coloring and the number of ring marks on it.
1.2.1 Centrum type OPGW
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