What Is Fiber Optic Internet? – How Does It Work

What is fiber optic internet? Internet access using fiber optics is the wave of the future. Using fiber optics, it can rate up to a whopping 1000 Mbps, making it the fastest method of data transfer currently in use (1Gpbs). In today’s fast-paced world, having access to high-speed Internet is crucial. As a result of the superior performance enabled by fiber optic technology, fiber Internet has completely eclipsed its rivals.

This guide will explain all you need to know about fiber optic internet, how fiber optic internet works, what equipment is required for fiber optic, and its benefits and drawbacks.

Fiber Optic Internet v.s DSL

Fiber optic connections provide data transfer speeds of up to one gigabit per second, making them one hundred times faster than dial-up connections. AT&T, Frontier, and Ziply Fiber are three service providers using this kind of connection.

However, the capacity of the old copper lines utilized by DSL and cable internet is limited since these wires were only meant to transport voice data.

When comparing DSL and cable internet connections, it may be tough to discern a difference in speed between them, but both types of connections have become faster throughout the years.

When comparing DSL and cable internet connections, the speed difference between the two could be tough to detect, but both types of connections have become faster over the years.

However, other providers, such as the cable and fiber providers, provide other possibilities, in contrast to those that do not, such as dial-up service providers.

How Fiber Optics Work?

In this article, when we speak about “Fiber,” we are referring to fiber optic Internet, a fiber-optic communication. We can transport information using what is known as a fiber optic cable, which involves passing a beam of light through glass fibers to do so.

Optical Fibers

Cables consisting of fiber are constructed using a large number of tiny optical fibers. These fibers are very tiny; to give you an idea of how thin they are, human hair is around 10 times thicker than these fibers. Even though they are not very large, they pack a lot of punch. Each optical fiber is composed of two distinct parts:

  • The Core: The core is the most interior component of the fiber and is often formed of glass. This is where the light travels through the thread.
  • The Cladding: The cladding is often comprised of a more substantial covering of plastic or glass wrapped around the core.

The combination of these two factors gives rise to the phenomenon known as complete internal reflection. Light can travel through the fibers without being absorbed because of total internal review. It occurs when light enters the glass at an angle of fewer than 42 degrees and bounces off of it in a mirror-like fashion. The cladding prevents light from escaping from the core because the material it is constructed of, glass or plastic, has a different optical density or lower refractive index. When light passes through a piece of glass, it is refracted or bent and thus travels at a reduced speed.

LED or laser light is pulsed down the cable at extraordinarily high speeds. Everything you see on the Internet, including the text you are reading right now, is made up of these pulses carrying binary data, a coding system. Bits, the fundamental building blocks of binary coding, can only take on the values of one or zero. Bytes are groups of eight bits used to transmit information. The binary digits may be easily converted into light pulses.

A single pulse indicates a one, and a lack of pulses is a zero. These pulses have a maximum range of 60 miles before they begin to degrade. These optical amplifiers amplify the signal of the pulses so that no information is lost while they travel thousands of kilometers.

Benefits of Fiber Optic Internet

Everyone may use the benefits of fiber internet, and it is feasible to discover inexpensive solutions. Internet access provided by fiber optics uses cutting-edge technology, making it more reliable and faster than its traditional competitors. Even if you don’t require speeds of 1 Gbps or more, you can still benefit from the stability and higher throughput of fiber internet by subscribing to a plan that gives 100 Mbps or more. This will allow you to take advantage of the many advantages that fiber internet has to offer.

In addition, unlike cable and DSL, the upload speed of a fiber connection is the same as the download speed of a fiber connection.

To put it another way, if you are paying for an internet connection capable of downloading at a speed of 300 megabits per second (Mbps), you should also be able to upload data at that rate. (The possible upload speeds with cable and DSL often reach their maximum of roughly 10-15 Mbps.) Those who often have video discussions or whose jobs need them to deal with large files may profit substantially from increases in upload speeds.

What You’ll Need?

Having many gadgets to use a fiber internet connection is unnecessary. The necessary hardware for fiber optic internet is outlined below.

Fiber Optic Cables

The Fiber optic internet availability is essential to us since cable installation is a critical component of its usefulness. Fiber internet requires a switch from copper wiring, used in the deployment of cable internet, to fiber optic cables inside the house. Transmission times for light packets over glass cables used for fiber optic communications are measured in seconds.


Because of the inability of standard DSL and cable modems to convert the light signals sent across fiber optic cables into digital signals, they cannot be used with a fiber internet connection. You’ll need a state-of-the-art Optical Network Terminal or fiber optic modem to connect to your service provider’s network.


After upgrading to a more sophisticated fiber internet box, the next step is to get a fiber optic router that is compatible with your new setup. This router’s primary function would be to wirelessly deliver the symmetric internet speeds the fiber optic connections provide to your various devices.

The Final Word

You should now be familiar with all the hardware and software needed to make use of a fiber optic internet connection, thanks to this what Is Fiber Optic Internet article.