What is Multimode Fiber Optic? You Should Know

What is Multimode Fiber Optic? Multimode Fiber Optic is a type of optical fiber designed to carry multiple light rays or modes simultaneously, each at a marginally different reflection angle inside the optical fiber core.

Multimode fiber is mainly used to transmit across comparatively shorter distances, as the modes are more likely to disperse over longer extents. This phenomenon is known as modal dispersion.

Another common type of optical fiber is the Singlemode fiber optic, which is mainly applied for longer distances. Multimode fiber is also known as multimode optical fiber.

Further About What is Multimode Fiber Optic?

What is Multimode Fiber Optic? You Should Know

Multimode Fiber Optic cable consists of glass fibers with a common diameter in the range of 50 to 100 microns for the light-carrying element. The most prevalent size is 62.5 microns. The plastic optical fiber (POF) is a modern plastic-based cable that ensures performance much like glass cable for brief runs, but economically.

While the Singlemode fiber has a small glass core, usually close to 9 microns. Using the Singlemode fibers, data will be transmitted at high speed over a longer distance. Multimode fibers are more vulnerable to attenuation compared with Singlemode fibers.

Bandwidth: Multimode fiber optic provides users with high bandwidth at high speeds across moderate distances. Light waves are spread into various modes, or paths, as they travel via the core of the cable, usually at 850 or 1300 nm.

Multimode fiber bandwidth is limited by its light mode and the maximum bandwidth at present is 28000MHz*km of OM5 fiber. While single-mode fiber bandwidth is unlimited theoretically because it allows only one light mode to pass through at a time.

Multimode fibers may not be suitable for high-speed data transmission. It is not advisable to mix and match fibers either. Attempting to connect a single-mode fiber with a multi-mode fiber may result in a 20-dB loss, which is 99% of the total power.

Products and Applications Cost

“Singlemode vs Multimode fiber cost” is a hot topic in some forums. Numbers of people have expressed their own opinions. Their views mainly focus on the optical transceiver cost, system cost, installation, and maintenance cost.