Difference Between Single Mode And Multimode Fiber Cable

Multimode fiber optic cables.

Difference between single mode and multimode fiber cable.

Singlemode cables have a core of 8 to 10 microns. This means that the core to cladding diameter ratio is 9 microns to 125 microns. Multimode fiber optic cable has a large diametral core that allows multiple modes of light to propagate. Multimode fiber optic cable.

While multimode is faster than single mode it also has a shorter maximum distance. Single mode fiber also accommodates much higher bandwidths than multimode. Single mode fiber is usually 9 125 in construction. What s the differences between single mode and multimode fiber.

These larger cores have more space for bouncing lasers down the length of the cable which increases signal speed. Multimode fiber has two types of light propagation step index and graded index while single mode fiber has only one step index. The main difference between singlemode and multimode fiber patch cables is the size of their respective cores. Multimode fiber optic cable has a large diametral core 50 to 100 microns that allows multiple modes of light to propagate.

The downside to using a thicker core is the increased attenuation. Multimode cables are made with thicker cores than single mode cables typically around 50 60 μm. Comparison with single mode fiber the main difference between multi mode and single mode optical fiber is that the former has much larger core diameter typically 50 100 micrometers. Because multimode fiber is thicker it can accommodate more signals for greater bandwidth.

Single mode means the fiber enables one type of light mode to be propagated at a time. Some studies report a difference of 100 000 ghz. Much larger than the wavelength of the light carried in it. 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.

In single mode cables light travels toward the center of the core in a single wavelength. So for greater speed it is better to use multimode fibers as a single cable is capable of handling what would otherwise require multiple single mode cables. With a 9 micron diametral core single mode cables must be kept extremely clean. Even tiny dust particles or debris can cause issues with signal transmission.

While multimode means the fiber can propagate multiple modes. Single mode fiber has a core that measures around 5um while the multimode fiber core measures 50um or more. Multimode fiber distance and bandwidth. The differences between single mode and multimode fiber mainly lies in fiber core diameter wavelength light source bandwidth color sheath distance and cost.