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Home » Communication » Fiber Optic Cables – Transmitting Mediums at high speed

Communication

Fiber Optic Cables – Transmitting Mediums at high speed

Last updated: 2022/12/11 at 1:55 AM
December 11, 2022
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Fiber Optic Cables

Fiber optic cables are cables that are made up of tiny glass or plastic fibers. These fibers are extremely thin, allowing them to transmit data over long distances using light signals. They are commonly used in telecommunications and networking applications because they can transmit data at high speeds and over long distances without any loss of signal strength. This makes them ideal for transmitting large amounts of data, such as video and audio signals, across long distances. Additionally, fiber optic cables are immune to electromagnetic interference, making them more secure and reliable than traditional copper cables.

The concept of transmitting light through a transparent medium for the purpose of transmitting information was first proposed by Alexander Graham Bell in 1880. However, it was not until the mid-20th century that the technology was developed to create the first practical fiber optic cables. In 1950, Harold Hopkins and Narinder Singh Kapany conducted experiments on glass fibers, and in 1954, John Tyndall demonstrated that light could be transmitted through a thin transparent medium. In the following years, other scientists and engineers continued to work on the development of fiber optic technology, leading to the creation of the first commercial fiber optic cables in the late 1970s.

Functioning of Fiber Optic Cables
One or more strands of glass, each barely thicker than a human hair, make up a fiber optic cable. The core, which offers the path for light to travel, is the center of each strand. In order to prevent signal loss and allow light to pass through bends in the cable, the core is covered in a layer of glass known as cladding.
Single mode and multi-mode optical fiber cables are the two main varieties. Multi-mode optical fiber cables use LEDs as opposed to single-mode fibers, which require incredibly thin glass strands and a laser to produce light.

Compared to long-distance copper cabling, fiber cables have a number of benefits.
A larger capacity is supported by fiber optics. A fiber cable can readily transport more network bandwidth than a copper cable of same thickness. Standard fiber cables come in 10 Gbps, 40 Gbps, and 100 Gbps capacities.
Signal enhancers are not as necessary because light can travel considerably farther along a fiber line without losing strength. Interruption is less likely to occur while using fiber optic cable. Shielding is necessary to safeguard copper network cables from electromagnetic interference. Even while this shielding is beneficial, it is insufficient to stop interference when numerous wires are connected close together. Most of these issues are avoided by the physical characteristics of fiber optic cables.

When compared to cable internet, how fast is fiber optic internet?

Fiber optic internet is typically much faster than traditional cable internet connections. The exact speed of a fiber optic internet connection can vary depending on a number of factors, including the technology used and the quality of the connection. In general, however, fiber optic internet connections are capable of speeds of up to 1 gigabit per second (Gbps), which is much faster than the average cable internet connection. This means that you can download large files, stream high-definition video, and perform other bandwidth-intensive tasks without any issues.

Currently, cable technology can only handle about 1,000 Mbps of bandwidth, whereas fiber optic internet can handle up to 2,000 Mbps. A 2-hour HD movie may be downloaded in around 32 seconds at 1,000 Mbps. A 2-hour HD movie downloads in roughly 17 seconds at 2,000 Mbps.

Communication is the most important part of our lives these days. Whether it’s mobile phones, emails, etc.,the basic idea is to transfer messages from one point to another at high speed. This transmission of the signal is via multimedia transfer. The medium can be of 2 types:

Fiber Optic Cables
photo:Pixabay

– Cable transmission media
– Wireless transmission media

Among the means of transmission of cables you can choose between twisted cables, copper cables, fiber optic cables and many more. Fiber optic cables are mainly used to carry light. The cable is not a single cable, but it is a collection of individual cables in which each cable is given a plastic coating. The entire cable is also provided with a protective coating depending on the environment in which it will be used. The application environment will determine the robustness, durability and durability of the cable. The material used is mainly plastic or glass depending on the range of transmission. For the short range, plastic is used while for the medium and long range, glass is used.

The optical system has three components:

– Optical transmitter
– Optical receiver
– Real optical supports that connect the transmitter and receiver

The optical transmitter can be a LASER, a coherent light source, or a light-emitting diode. The actual propagation of light through the optical fiber is based on Maxwell’s equation. An optical transmitter is a device that converts an electrical signal into an optical signal and transmits it over an optical fiber. It is used in fiber optic communication systems to transmit data over long distances using light as the medium. The optical transmitter typically consists of a light source, such as a laser or an LED, and a modulator that encodes the data onto the light signal. The modulated light is then sent through an optical fiber to the receiver, where it is converted back into an electrical signal. Optical transmitters are used in a wide range of applications, including telecommunications, cable TV, and internet access.

Fiber optic cables are used for a variety of purposes ranging from long-distance telemetry to transmitting fast information from one node to another within a building. There are many advantages to using fiber optic cables. Some of them are as follows:-

– Unaffected by electromagnetic interference
There is no fiber interference or very little. Therefore, data security is maintained
Multiplexing of a large number of signals is possible, as you can also use high-frequency bandwidths
Ensuring safety in hazardous areas
– Much cheaper than other wired media
There are fewer problems with ground loops in such transmissions.

Refractive index, material composition, and mode of light transmission are the three criteria used to categorize optical fiber cables.

OFC’s refractive index has two different forms of basis:

Step Index Fibers: This type of fiber consists of a core that is enclosed by cladding and has a single, uniform index of refraction.
Graded Index Fibers: As the radial distance from the fiber axis rises, the refractive index of the optical fiber falls.
The two forms of OFC are based on the materials:

Poly(methyl methacrylate) is utilized as the core material in plastic optical fibers, which transmit light.
Glass Fibers: The glass fibers in this fiber cable are incredibly thin.
OFC is classified into the following groups according to how light propagates:

Signals sent over great distances are sent via single-mode fibers.
Signals are transmitted across short distances using multimode fibers.

For some specific purposes, the color-coded cable is available. In total, 12 colors are used in cable markings. Each color has its own specific notes to the technicians who manage them. This method facilitates the use of these cables and prevents misadventures.

Today, hybrid cables are also used, which are a mixture of fiber optic cables and electrical cables. In these hybrid cables, information and power are transmitted together.

Fiber optic cables are the perfect choice if performance and safety are needed. It’s one of the important things to remember.

TAGGED: fiber optic cables, multimedia transfer, Wireless transmission
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