Pigtail FC/UPC, SM, 9/125, 0,9mm, G652D fiber, 1m

Pigtail FC/UPC, SM, 9/125, 0.9mm, G652D fibre, 1m" is a fibre optic pigtail. 

Pigtail: A pigtail is a short length of fibre optic cable with a connector on one end and exposed fibres on the other end. It is typically used to terminate or splice into a longer fibre optic cable.

FC/UPC: FC stands for "Fibre Connector," and UPC stands for "Ultra Physical Contact." FC/UPC is a type of fiber optic connector that ensures low insertion loss and back reflection. It features a threaded coupling mechanism, which provides a secure connection.

SM: SM stands for "Single Mode." Single-mode fiber has a small core diameter (typically 9/125 microns) that allows only one mode or ray of light to propagate through the fiber. It is commonly used for long-distance telecommunications and high-speed data transmission.

9/125: This specification refers to the core and cladding diameters of the fibre optic cable. In this case, the core diameter is 9 microns, and the cladding diameter is 125 microns.

0.9mm: This is the outer diameter of the fiber optic cable. It specifies the size of the cable, which in this case is 0.9 millimetres.

G652D fiber: G652D is a specific type of single-mode fiber that conforms to the ITU-T G.652D standard. It is optimized for transmission at 1310 nm and 1550 nm wavelengths, commonly used in telecommunication networks.

1m: This specifies the length of the pigtail, indicating that it is 1 meter long.

In summary, "Pigtail FC/UPC, SM, 9/125, 0.9mm, G652D fiber, 1m" describes a single-mode fiber optic pigtail with an FC/UPC connector, using a 9/125 micron core and cladding, a 0.9mm outer diameter, and G652D fiber type. The pigtail is 1 meter long.