Multi-mode patch cord—The jacket is orange. It permits transmission over shorter distances.
Patch cords are classified into SC, LC, FC, and so on based on interface type. The length of a patch cord
can be 0.5 m (1.64 ft), 1 m (3.28 ft), 2 m (6.56 ft), 3 m (9.84 ft), 5 m (16.40 ft), 10 m (32.81 ft), and so
A pigtail cord is an optical fiber that has an optical connector on one end and a length of exposed fiber
on the other. The end of the pigtail is fusion spliced to a fiber, connecting the fiber cable and transceiver.
Pigtail cords fall into single-mode (yellow) and multi-mode (orange), and can also be classified into SC,
LC, FC, and so on based on interface type.
Fiber connectors are indispensable passive components in an optical fiber communication system. They
allow the removable connection between optical channels, which makes the optical system debugging
and maintenance more convenient and the transit dispatching of the system more flexible.
Figure 49 SC connector
Figure 50 LC connector
Make sure the fiber connector and fiber type match the transceiver module type.
The optical interfaces on some cards have shielded covers. Remove the shielded covers before
using the optical interfaces. Optical interfaces must be installed with shielded covers when they are
not in use. Keep them safely.
Fiber connectors must be protected under safe and reliable outer packing, and be fitted with dust
caps. Fiber connectors must be installed with dust caps when they are not in use. Take care not to
scratch their end face. Replace the dust cap if it is loose or polluted.
Before connecting a fiber, use dust free paper and absolute alcohol to clean the end face of the
fiber connector. You can brush the end face only in one direction. You also need to brush the end
face of the fiber port.