Satin the light reflecting is not scattered as much by the fibres, which have fewer tucks. Satin is usually a warp-faced weaving technique in which warp yarns are "floated" over weft yarns, although there are also weft-faced satins. If a fabric is formed with a satin weave using filament fibres such as silk, polyester or nylon, the corresponding fabric is termed a "satin", although some definitions insist that the fabric be made from silk. If the yarns used are short-staple yarns such as cotton, the fabric formed is considered a sateen. A satin fabric tends to have a high luster due
Dark fibre other commercial reasons. However, dark fibre networks are generally only available in high-population-density areas where fibre has already been laid, as the civil engineering costs of installing fibre to new locations is often prohibitive. For these reasons, dark fibre networks are typically run between data centers and other places with existing fibre infrastructure. Managed dark fibre is a form of wavelength-division multiplexed access to otherwise dark fibre where a pilot signal is beamed into the fibre by the fibre provider for management purposes using a transponder tuned to the assigned wavelength. DWDM systems generally require central management because their closely