Fiber Optic Cable Single Mode Vs Multimode Pdf

Designed for long distance communication a single mode fiber cable allows light signals to travel more than 10 miles a much longer distance than multimode.

Fiber optic cable single mode vs multimode pdf.

Single mode fiber optic cable. Compared to the multimode fiber the single mode patch cords carry a higher bandwidth but it requires a light source with a narrow spectral width. Single mode fiber cabling system is suitable for long reach data transmission applications and widely deployed in carrier networks mans and pons. The single mode gives a higher transmission and up to 50 times more distance than the multimode.

These larger cores have more space for bouncing lasers down the length of the cable which increases signal speed. Multimode optical fiber as its very name indicates allows the signal to travel through different pathways or modes that are placed inside of the cable s core. The following are the standards for single mode optic fiber as given by several international committees. In single mode cables light travels toward the center of the core in a single wavelength.

Os1 type cable uses a tight buffered construction while os2 is a loose tube or blown cable construction. While multimode is faster than single mode it also has a shorter maximum distance. Some studies report a difference of 100 000 ghz. Multimode fiber optic cables multimode cables are made with thicker cores than single mode cables typically around 50 60 μm.

The main difference between singlemode and multimode fiber patch cables is the size of their respective cores. While multimode fiber is usually used with led based fiber optic equipment for short distance transmissions. In multimode fiber figure 5 light travels through the fiber following different light paths called modes in single mode fiber only one mode is propagated straight through the fiber figure 6. Single mode fiber needs to be used with laser diode based fiber optic transmission equipment for precise calibration required to inject light into the fiber optic cable.

In fiber optic communications single mode and multimode fiber constructions are used depending on the application. The core from a single mode cable is smaller than one from a multimode. Because of this the number of light reflections created as the light passes through the core decreases lowering attenuation and creating the ability for the signal to travel further. Single mode cable has a much smaller core 8 9um than multimode cable and uses a single path mode to carry the light.

Single mode fiber also accommodates much higher bandwidths than multimode. Single mode fiber optic cable has a small diametral core that allows only one mode of light to propagate.