Cabling often used in the optical fiber, the optical fiber is a single mode and multimode points, it is the advantage of the fiber light guide by transmitting a signal, non-conductive, lightning is not afraid, so do not require grounding protection. Mode of light transmission in the optical fiber is divided into: multimode and singlemode fibers. So how to distinguish it?
Plurality of multimode optical fiber can transmit an optical pattern, the optical fiber jumpers color is generally orange, an intermediate multi-mode fiber core thicker, multi-mode fiber transmission distance is relatively near, generally only a few kilometers, and the intermediate single-mode fiber thin wire, only two kinds of contrast, is 50 micron multimode, single-mode is 10 micrometers.
Single-mode fiber: only one mode of light transmission, a single mode fiber cable outer sheath color is generally yellow. Single-mode fiber transmission distance is much far away, usually up to a few times a multimode fiber. Singlemode prices are generally more expensive than multimode fiber price.
Optical fiber cabling selective advantage:
1, when the transmission distance is larger than information dot 100m, if you choose to use copper. Repeaters must be added or increasing the inter-network devices and weak, thereby increasing the cost and the hidden faults, the use of optical fiber can easily solve this problem.
2, in a particular operating environment (such as factories, hospitals, air-conditioned room, power room, etc.) there are a large number of sources of electromagnetic interference, from electromagnetic interference fibers may be stable run in these environments.
3, the optical fiber absent of electromagnetic leakage to be detected in the optical fiber transmission signal is extremely difficult. At higher security level requires local (such as military, research and development, auditing, government and other industries) is a good choice.
4, the higher bandwidth requirements of the environment, reaching more than 1G, fiber is a good choice.
In practical applications, if the distant to use single mode fiber, if multi-mode fiber can be used at close range, the transmission will require the use of additional fiber optic transceivers, single-mode single-mode fiber transceivers, multimode optical fiber with a corresponding plurality of multimode transceiver, the transceiver is higher than the price of single mode fiber is multi-mode transceiver.