Optical Fiber – Fiber Optics

Fiber optic

Today’s finest technology “Fiber optic” is making use of glass or plastic threads objects for the at hand better results during the process of transmitting data with their help. Usually, this fiber is consisted on a cluster of glass fibers. And every piece of this particularly popular technology is able to transmit messages.

But Optical Power Measurements will be done in milliwatts (mW) linear units, decibels (dB), microwatts and nanowatts (nW). Moreover, an OTDR (Optical Time Domain Reflectometers) can be used for the troubleshooting purpose in case of Optic fiber. And finding a cable break with OTDR help will be best way to do so. Verifying splice loss can also be done with its assistance. This will provide you a reliable measurement while finding problems with the back reflection. Two common modes of this fiber are specified below as:

Single-mode Optic fiber (SMF)

A single-mode optic fiber is also sometimes known as monomode optical fiber or else single-mode optical waveguide. As name shows, it is as an optical cable designed to pass on data in a single light ray form. A single mode optical fiber can display the modal-dispersion that is resultant from the multiple transmission spatial modes along with a narrower modal-dispersion.

Well! Optic fiber is used for optical cables and the standard single-mode optic fiber (SMF) can be best described as a step index such as a dispersion un-shifted fiber along with: a glass core, cladding and dual acrylate coatings.  That means, highest quality Single-Mode fibers are specific in their design and generally, step index glass fibers part is coated with dual acrylate coatings for its protection. All this is done to provide the required bending and vital strength for the sure fiber’s maximum lifetime while colored ink coating can be applied in favor of each detailed cable specification to satisfy its reliability.

Plus point of single mode fibers is their keeping hold of every light ray over a long distance whenever you will compare SMF with the multi-mode fibers. Actually, these fibers have a higher bandwidth than multi-mode fibers. But single mode fiber equipments are more expensive than those are used for multi-mode optical fiber. At any rate, SMF is ideal for the long haul, telephonic, data and video networkings. But for the product quality and reliability, initial and periodic qualification testing should be performed so to be assured with the fiber performance as well as with it durability in the realistic field environment.

Multi-mode Optic fiber

On the other hand, Multi-mode optical fiber (MM fiber) is commonly used to perform the short distance communication, for example communication within a building simply. Moreover, Multi-mode optical fiber links data transfer rates is approximately 10 Mbit/s-10 Gbit/s.  At the same time as such link lengths can be up-to 600 meters.

MM optic fiber is normally used for the network backbone applications within buildings just because of:

  • fiber high capacity
  • reliable functionality
  • And because of multi-fiber optical connector that is designed to link concurrently more than one optic fibers together.

In short, there are certain reasons for preferring Optic fibers as a communication line instead of traditional metal. Some are given below as:

  • Greater bandwidth
  • Less vulnerable
  • Light weight
  • Data transmission is done in the digital form



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